RVP330, RVP331 Heating and Domestic Hot Water …1).pdf · Heating and Domestic Hot Water...

Edition 1.0Controller series ACE1P2477en14.11.2000

Siemens Building TechnologiesLandis & Staefa Division

RVP330, RVP331Heating and Domestic Hot Water ControllerBasic Documentation

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Siemens Building Technologies Basic documentation RVP330, RVP331 CE1P2377enLandis & Staefa Division 14.11.2000

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Siemens Building Technologies Basic documentation RVP330, RVP331 CE1P2377enLandis & Staefa Division Contents 14.11.2000

Contents

1 Summary ........................................................................................................ 9

1.1 Brief description and key features .................................................................. 9

1.2 Type summary................................................................................................ 9

1.3 Equipment combinations ................................................................................ 9

1.3.1 Suitable sensors ............................................................................................. 9

1.3.2 Suitable room units....................................................................................... 10

1.3.3 Suitable actuators......................................................................................... 10

1.3.4 Communication............................................................................................. 10

1.3.5 Documentation ............................................................................................. 10

2 Use ............................................................................................................... 11

2.1 Types of plant ............................................................................................... 11

2.2 Types of houses and buildings ..................................................................... 11

2.3 Types of heating systems............................................................................. 11

2.4 Functions...................................................................................................... 11

3 Fundamentals............................................................................................... 13

3.1 Key technical features .................................................................................. 13

3.1.1 Plant types with regard to heating circuit ...................................................... 13

3.1.2 Plant types with regard to d.h.w. heating ...................................................... 13

3.1.3 Function blocks............................................................................................. 13

3.2 Plant types.................................................................................................... 13

3.2.1 Selectable combinations............................................................................... 14

3.2.2 Heating circuit type no. 4: Two space heating systems with mixing valve .... 14

3.2.3 Heating circuit type no. 5: Two space heating systems with mixing valve, pre-control with boiler.......................................................................................... 15

3.2.4 Heating circuit type no. 6: One space heating system with mixing valve, onespace heating system with pump circuit, pre-control with boiler ................... 15

3.2.5 D.h.w. circuit type no. 0: No d.h.w. ............................................................... 16

3.2.6 D.h.w. circuit type no. 1: Storage tank with charging pump .......................... 16

3.3 Setting levels, function blocks and plant types ............................................. 16

3.4 Heating circuit operating modes ................................................................... 17

3.4.1 Automatic operation...................................................................................... 17

3.4.2 Continuously REDUCED heating ................................................................. 17

3.4.3 Continuously NORMAL heating.................................................................... 17

3.4.4 STAND-BY ................................................................................................... 17

3.5 D.h.w. operating mode ................................................................................. 17

3.6 Manual operation.......................................................................................... 18

3.7 Plant type and operating mode..................................................................... 18

3.8 Operational status and operational level....................................................... 18

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4 Acquisition of measured values ....................................................................19

4.1 Room temperature (A6, B5 / A6, B52)............................................................19

4.1.1 Measurement ................................................................................................19

4.1.2 Handling faults ..............................................................................................19

4.1.3 Room model .................................................................................................19

4.2 Flow temperature (B1, B12)..........................................................................20

4.2.1 Measurement ................................................................................................20

4.2.2 Handling faults ..............................................................................................20

4.3 Boiler temperature (B2).................................................................................20

4.3.1 Measurement ................................................................................................20

4.3.2 Handling faults ..............................................................................................20

4.4 Outside temperature (B9) .............................................................................20

4.4.1 Measurement ................................................................................................20

4.4.2 Handling faults ..............................................................................................20

4.5 Return temperature (B7) ...............................................................................21

4.5.1 Measurement ................................................................................................21

4.5.2 Handling faults ..............................................................................................21

4.6 Storage tank temperature (B31)....................................................................21

4.6.1 Measurement ................................................................................................21

4.6.2 Handling faults ..............................................................................................21

5 Function block "End-user space heating"......................................................22

5.1 Operating lines..............................................................................................22

5.2 Setpoints.......................................................................................................22

5.2.1 General .........................................................................................................22

5.2.2 Frost protection for the building.....................................................................22

5.3 Heating program ...........................................................................................23

5.4 Holiday program............................................................................................23

5.5 Heating curve................................................................................................23

6 Function block "End-user d.h.w." ..................................................................24

6.1 Operating line................................................................................................24

6.2 Setpoint.........................................................................................................24

7 Function block "End-user general"................................................................25

7.1 Operating lines..............................................................................................25

7.2 Switching program 2 .....................................................................................25

7.3 Time of day and date ....................................................................................25

7.4 Indication of faults .........................................................................................26

8 Function block "Plant type" ...........................................................................27

8.1 Operating line................................................................................................27

8.2 General .........................................................................................................27

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9 Function block "Space heating" .................................................................... 28

9.1 Operating lines ............................................................................................. 28

9.2 ECO function ................................................................................................ 28

9.2.1 Compensating variables and auxiliary variables........................................... 28

9.2.2 Heating limits ................................................................................................ 29

9.2.3 Mode of operation......................................................................................... 29

9.3 Room temperature source............................................................................ 30

9.4 Optimization.................................................................................................. 30

9.4.1 Definition and purpose.................................................................................. 30

9.4.2 Fundamentals............................................................................................... 31

9.4.3 Optimization with room sensor ..................................................................... 31

9.4.4 Optimization without room sensor ................................................................ 31

9.4.5 Process ........................................................................................................ 31

9.4.6 Room model temperature............................................................................. 32

9.4.7 Optimum stop control ................................................................................... 32

9.4.8 Quick setback ............................................................................................... 32

9.4.9 Optimum start control ................................................................................... 33

9.4.10 Boost heating................................................................................................ 33

9.5 Room functions............................................................................................. 34

9.5.1 Maximum limitation of the room temperature................................................ 34

9.5.2 Room influence............................................................................................. 34

9.6 Heating curve ............................................................................................... 35

9.6.1 Purpose ........................................................................................................ 35

9.6.2 Settings ........................................................................................................ 35

9.6.3 Deflection...................................................................................................... 36

9.6.4 Parallel displacement of heating curve ......................................................... 37

9.7 Generation of setpoint .................................................................................. 38

10 Function block "Pump heating circuit"........................................................... 39

10.1 Operating line ............................................................................................... 39

10.2 Protection against overtemperatures............................................................ 39

11 Function block "Actuator heating circuit"....................................................... 40

11.1 Operating lines ............................................................................................. 40

11.2 Limitations .................................................................................................... 40

11.2.1 Flow temperature limitations......................................................................... 40

11.2.2 Setpoint rise.................................................................................................. 40

11.3 Type of actuator............................................................................................ 41

11.3.1 Two-position control ..................................................................................... 41

11.3.2 Three-position control ................................................................................... 41

11.4 Auxiliary variables in interconnected plants .................................................. 41

11.4.1 Excess mixing valve temperature ................................................................. 41

11.5 Pulse lock with three-position actuator ......................................................... 42

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12 Function block "Boiler" ..................................................................................43

12.1 Operating lines..............................................................................................43

12.2 Operating mode ............................................................................................43

12.3 Limitations.....................................................................................................44

12.3.1 Maximum limitation of the boiler temperature: ..............................................44

12.3.2 Minimum limitation of the boiler temperature: ...............................................44

12.3.3 Actions during d.h.w. heating........................................................................44

12.4 Two-position control......................................................................................44

12.4.1 Control with a single-stage burner ................................................................44

12.4.2 Control with a 2-stage burner........................................................................45

12.4.3 Frost protection for the boiler ........................................................................46

12.4.4 Protective boiler start-up ...............................................................................47

12.4.5 Protection against boiler overtemperatures ..................................................47

12.5 Operating mode of pump M1 ........................................................................48

13 Function block "Setpoint of return temperature limitation".............................49

13.1 Operating line................................................................................................49

13.2 Description....................................................................................................49

13.3 Minimum limitation of the return temperature................................................49

13.3.1 Acquisition of measured values ....................................................................49

13.3.2 Mode of operation .........................................................................................49

13.3.3 Mode of operation with a single device (with no bus)....................................50

13.3.4 Mode of operation in interconnected plants ..................................................50

14 Function block "D.h.w." .................................................................................51

14.1 Operating lines..............................................................................................51

14.2 Assignment of d.h.w. heating........................................................................51

14.3 Program for the circulating pump..................................................................51

14.4 Frost protection for d.h.w. .............................................................................51

14.5 Release of d.h.w. heating .............................................................................52

14.5.1 Function ........................................................................................................52

14.5.2 Release programs.........................................................................................52

14.5.3 D.h.w heating during the holiday period........................................................53

14.6 Priority and flow temperature setpoint...........................................................53

14.6.1 Settings.........................................................................................................53

14.6.2 D.h.w. priority ................................................................................................53

14.6.3 Absolute priority ............................................................................................54

14.6.4 Shifting priority ..............................................................................................54

14.6.5 No priority .....................................................................................................54

14.6.6 Flow temperature setpoint ............................................................................55

14.6.7 Maximum selection .......................................................................................55

14.6.8 D.h.w.............................................................................................................55

14.7 Type of d.h.w. charging.................................................................................55

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14.8 D.h.w. temperature and d.h.w. switching differential..................................... 55

14.9 Boost of the d.h.w. charging temperature ..................................................... 56

14.10 Maximum d.h.w. charging time ..................................................................... 56

14.11 Legionella function........................................................................................ 57

14.12 Forced charging............................................................................................ 57

14.13 Protection against discharging...................................................................... 57

14.13.1 Purpose ........................................................................................................ 57

14.13.2 Mode of operation......................................................................................... 58

14.14 Manual d.h.w. charging ................................................................................ 58

15 Function block "Multi-functional relay" .......................................................... 59

15.1 Operating lines ............................................................................................. 59

15.2 Functions...................................................................................................... 59

15.2.1 No function ................................................................................................... 59

15.2.2 Relay energized in the event of fault ............................................................ 59

15.2.3 Relay energized, if there is demand for heat ................................................ 60

15.2.4 Circulating pump........................................................................................... 60

15.2.5 Type of d.h.w. charging ................................................................................ 61

16 Function block "Service functions and general settings"............................... 62

16.1 Operating lines ............................................................................................. 62

16.2 Display functions .......................................................................................... 62

16.2.1 Hours run counter......................................................................................... 62

16.2.2 Software version........................................................................................... 62

16.3 Commissioning aids ..................................................................................... 62

16.3.1 Simulation of the outside temperature .......................................................... 62

16.3.2 Relay test ..................................................................................................... 63

16.3.3 Sensor test ................................................................................................... 63

16.4 Auxiliary functions......................................................................................... 64

16.4.1 Frost protection for the plant......................................................................... 64

16.4.2 Pump overrun ............................................................................................... 65

16.4.3 Pump kick..................................................................................................... 65

16.4.4 Winter- / summertime changeover................................................................ 65

16.4.5 Locking signal gain ....................................................................................... 65

16.5 Entries for LPB ............................................................................................. 66

16.5.1 Source of time of day.................................................................................... 66

16.5.2 Outside temperature source ......................................................................... 67

16.5.3 Addressing devices ...................................................................................... 67

16.5.4 Bus power supply ......................................................................................... 68

16.5.5 Bus loading number...................................................................................... 68

17 Function block "Locking functions" ............................................................... 69

17.1 Operating line ............................................................................................... 69

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17.2 Locking settings ............................................................................................69

18 Communication .............................................................................................70

18.1 Combination with room units.........................................................................70

18.1.1 General .........................................................................................................70

18.1.2 Combination with room unit QAW50 / QAW50.03.........................................70

18.1.3 Combination with room unit QAW70 .............................................................71

18.1.4 Combination with SYNERGYR central unit OZW30......................................73

18.2 Communication with other devices ...............................................................73

19 Handling........................................................................................................74

19.1 Operation ......................................................................................................74

19.1.1 General .........................................................................................................74

19.1.2 Analog operating elements ...........................................................................75

19.1.3 Digital operating elements ............................................................................76

19.1.4 Setting levels and access rights....................................................................77

19.2 Commissioning .............................................................................................77

19.2.1 Installation Instructions .................................................................................77

19.2.2 Operating lines..............................................................................................77

19.3 Installation.....................................................................................................78

19.3.1 Mounting location..........................................................................................78

19.3.2 Mounting choices ..........................................................................................78

19.3.3 Electrical installation .....................................................................................78

20 Engineering...................................................................................................79

20.1 Connection terminals ....................................................................................79

20.2 Connection diagrams ....................................................................................80

20.2.1 Low voltage side ...........................................................................................80

20.2.2 Mains voltage side ........................................................................................80

21 Mechanical design ........................................................................................81

21.1 Basic design .................................................................................................81

21.2 Dimensions ...................................................................................................81

22 Technical data...............................................................................................82

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Siemens Building Technologies Basic documentation RVP330, RVP331 CE1P2377enLandis & Staefa Division Summary 14.11.2000

1 Summary1.1 Brief description and key features

• Controllers RVP33... are multifunctional heating controllers for use in residential andnon-residential buildings

• They are suited for weather-compensated flow temperature control of 2 heatingzones with or without room influence and for demand-dependent boiler temperaturecontrol

• In terms of space heating, the field of use comprises plants that have their own heatgeneration

• In terms of d.h.w. heating, the field of use comprises storage tank charging andelectric immersion heaters

• Both types of controller have 6 plant types pre-programmed. When a certain type ofplant is selected, all functions and settings required for that particular plant will beactivated

• A multifunctional relay provides additional control functions, if required• Heating curve adjustment is digital. A setting knob is assigned to each of the 2

heating circuits for making room temperature readjustments (L&S standard)• All the other parameters are set digitally using the operating line principle

(L&S standard)• The RV330 is capable of communicating with other devices via LPB (Local Process

Bus). The RVP331 is a non-communicating controller• Key design features: operating voltage AC 230 V, CE conformity, overall dimensions

to DIN 43700 (96 * 144 mm)

1.2 Type summary

Description Type reference

Heating and d.h.w. controller, communicating RVP330

Heating and d.h.w. controller, non-communicating RVP331

Both types are compact controllers and require no plug-in modules.

1.3 Equipment combinations1.3.1 Suitable sensors

• For water temperatures:Suitable are all types of temperature sensors that use a sensing elementLandis & Staefa Ni 1000 Ω at 0 °C. The following types are presently available:− Clamp-on temperature sensor QAD22− Immersion temperature sensors QAE22...− Immersion temperature sensor QAP21.3 complete with connecting cable

• For the room temperature:Suitable are all types of temperature sensors that use a sensing Landis & StaefaNi 1000 Ω at 0 °C. The following types are presently available:− Room sensor QAA24

• For the outside temperature:− Outside sensor QAC22 (sensing element Landis & Staefa Ni 1000 Ω at 0 °C)− Outside sensor QAC32 (sensing element NTC 575 Ω at 20 °C)

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Siemens Building Technologies Basic documentation RVP330, RVP331 CE1P2377enLandis & Staefa Division Summary 14.11.2000

1.3.2 Suitable room units

• Room unit QAW50 for heating circuit 1, QAW50.03 for heating circuits 1 and 2• Room unit QAW70 for heating circuits 1 and 2

1.3.3 Suitable actuators

The following actuators from Landis & Staefa can be used:• Three-position actuators with a running time of 0.5...14.5 minutes• Two-position actuators• Operating voltage AC 24 V ... AC 230 V

1.3.4 Communication

The RVP330 permits communication with:• All Landis & Staefa controllers with LPB communication capability• SYNERGYR central unit OZW30 (software version 3.0 or higher)

1.3.5 Documentation

Type of documentation Ordering number (for English)

Data Sheet RVP330 CE1N2477en

Data Sheet RVP331 CE1N2478en

Operating Instructions RVP33... 74 319 0149 0

Installation Instructions RVP330 74 319 0157 0

Installation Instructions RVP331 74 319 0165 0

Data Sheet QAW50... CE2N1635E

Data Sheet QAW70 CE2N1637E

Data Sheet "LPB Basic System Data" CE1N2030E

Data Sheet "LPB Basic Engineering Data" CE1N2032E

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Siemens Building Technologies Basic documentation RVP330, RVP331 CE1P2377enLandis & Staefa Division Use 14.11.2000

2 Use2.1 Types of plant

In terms of space heating, the RVP33... are suitable for all types of heating plant thatuse weather-compensated flow temperature control.With regard to d.h.w. heating, the RVP33... are suited for plants with storage tanks.Main applications:• Heating zones and d.h.w. heating with own heat generation• Interconnected plants consisting of heat generation, several heating zones and

central or decentral d.h.w. heating

2.2 Types of houses and buildings

Basically, the RVP33... are suited for use in all types of houses and buildings. But theyhave been designed specifically for:• Multifamily houses• Single-family houses• Small to medium-size non-residential buildings

2.3 Types of heating systems

The RVP33... are suited for use with all standard heating systems, such as:• Radiators• Convectors• Underfloor heating systems• Ceiling heating systems• Radiant panels

2.4 Functions

The RVP33... are used if one or several of the following functions is / are required:• Weather-compensated flow temperature control• Flow temperature control

− through a modulating seat or slipper valve (three-position or two-position actuator)in the mixing circuit, or

− through direct burner control in the pump circuit• Weather-compensated flow temperature control and simultaneous demand-

dependent control of the boiler temperature• D.h.w. storage tank charging through control of a charging pump, with or without

circulating pump• Optimum start / stop control according to the selected 7-day program• Quick setback and boost heating according to the selected 7-day program• ECO function: demand-dependent switching of the heating system based on the type

of building construction and the outside temperature• Multifunctional relay• 7-day program for building occupancy with a maximum of 3 setback periods per day

and daily varying occupancy schedules• Own 7-day switching program for the release of d.h.w. heating• Input of one holiday period per year• Automatic summer- / wintertime changeover• Display of parameters, actual values, operational statuses and fault status signals• Communication with other devices via LPB (only with RVP330)• Remote operation via room unit

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Siemens Building Technologies Basic documentation RVP330, RVP331 CE1P2377enLandis & Staefa Division Use 14.11.2000

• Service functions• Frost protection for the plant, the boiler and the house or building• Minimum limitation of the return temperature.• Minimum and maximum limitation of the flow temperature• Maximum limitation of the room temperature• Periodic pump run• Pump overrun• Maximum limitation of the rate of setpoint increase• Legionella function• Manual d.h.w. charging

For the pre-programmed heating and d.h.w. circuits and their possible combinations,refer to section "3.2 Plant types".

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Siemens Building Technologies Basic documentation RVP330, RVP331 CE1P2377enLandis & Staefa Division Fundamentals 14.11.2000

3 Fundamentals3.1 Key technical features

The RVP33... offer 2 key technical features:• The controller has 6 plant types pre-programmed. Each plant type consists of a

heating circuit plant type and a d.h.w. circuit plant type• All functions and their settings are combined in the form of function blocks

3.1.1 Plant types with regard to heating circuit

In terms of heating circuit, the following plant types are available:• Heating circuit plant type no. 4: "Two space heating systems with mixing valve"• Heating circuit plant type no. 5: "Two space heating systems with mixing valve, pre-

control with boiler"• Heating circuit plant type no. 6: "One space heating system with mixing valve, one

space heating system with pump circuit, pre-control with boiler"

3.1.2 Plant types with regard to d.h.w. heating

In terms of d.h.w., the following plant types are available:• D.h.w. plant type no. 0: "No d.h.w."• D.h.w. plant type no. 1: "Storage tank with charging pump"

3.1.3 Function blocks

The following function blocks are available:• Function block "End-user space heating"• Function block "End-user d.h.w."• Function block "End-user general"• Function block "Plant type"• Function block "Space heating"• Function block "Pump heating circuit"• Function block "Actuator heating circuit"• Function block "Boiler"• Function block "Setpoint of return temperature limitation"• Function block "D.h.w."• Function block "Multifunctional relay"• Function block "Service functions and general settings"• Function block "Locking functions"For each function block, the required settings are available in the form of operatinglines. On the following pages, a description of the individual functions per block and lineis given.

3.2 Plant types

The functions required for each type of plant are ready assigned. When commissioningthe installation, the relevant plant type must be selected.Each plant type consists of a heating circuit and a d.h.w. circuit.

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3.2.1 Selectable combinations

Type reference Type of heating circuit Type of d.h.w. heating4–0 Two space heating systems with mixing valve No d.h.w.4–1 Two space heating systems with mixing valve Storage tank with

charging pump5–0 Two space heating systems with mixing

valve, pre-control with boilerNo d.h.w.

5–1 Two space heating systems with mixingvalve, pre-control with boiler

Storage tank withcharging pump

6–0 One space heating system with mixing valve,one space heating system with pump circuit,pre-control with boiler

No d.h.w.

6–1 One space heating system with mixing valve,one space heating system with pump circuit,pre-control with boiler

Storage tank withcharging pump

Notes on the plant diagrams with the different types of space heating and d.h.w. circuitsare given in the following sections.Symbols and indicate where and how the space heating circuit is connected tothe d.h.w. circuit. where:

represents the flowrepresents the return

3.2.2 Heating circuit type no. 4: Two space heating systemswith mixing valve

B9

LPB

2477

S01

B7

B1Y1

E1

M2 A6B5

E2

B12Y7

M5

A6B52

N1

Two space heating systems with mixing circuits. Weather-compensated flowtemperature control (three-position or two-position control).Outside temperature signal from own outside sensor or via data bus. With or withoutroom influence. Heating up and setback according to the heating program.

A6 Room unit QAW50... or QAW70 E3 Heat source (boiler)B1 Flow sensor heating circuit 1 K6 Electric immersion heater / circulating pumpB12 Flow sensor heating circuit 2 LPB Data bus (only RVP330)B2 Boiler sensor M1 Circulating pumpB31 Storage tank sensor / thermostat M2 Heating circuit pump heating circuit 1B5 Room sensor heating circuit 1 M3 Charging pumpB52 Room sensor heating circuit 2 M5 Heating circuit pump heating circuit 2B7 Return sensor N1 Controller RVP33...B9 Outside sensor Y1 Mixing valve heating circuit 1E1 Consumer (room 1) Y7 Mixing valve heating circuit 2E2 Consumer (room 2)

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3.2.3 Heating circuit type no. 5: Two space heating systemswith mixing valve, pre-control with boiler

2477

S02

B7

B1

E1

M1

B9

LPB

A6B5

E2

B12Y7

M5

A6B52

N1

E3B2

M2Y1

Two space heating systems with mixing circuits. Weather-compensated flowtemperature control (three-position or two-position control). Simultaneous demand-dependent control of the boiler temperature, two-position control through control of theburner.Outside temperature signal from own outside sensor or via data bus. With or withoutroom influence. Heating up and setback according to the heating program.

3.2.4 Heating circuit type no. 6: One space heating systemwith mixing valve, one space heating system with pumpcircuit, pre-control with boiler

2477

S03

B7E1

M1

B9

LPB

A6B5

E2

B12Y7

M5

A6B52

N1

E3B2

M2

One space heating system with weather-compensated flow temperature control (three-position or two-position control) and one space heating system with pump circuit.Simultaneous demand-dependent control of the boiler temperature, two-position controlthrough control of the burner.Outside temperature signal from own sensor or via data bus. With or without roominfluence. Heating up and setback according to the heating program.

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3.2.5 D.h.w. circuit type no. 0: No d.h.w.

No d.h.w. heating available

3.2.6 D.h.w. circuit type no. 1: Storage tank with charging

pump

B31

M3

K6

2477

S04

K6

N1

Charging of d.h.w. storage tank through control of the charging pump. Acquisition ofthe d.h.w. temperature with one or 2 sensors or thermostats. Circulating pump andelectric immersion heater are optional.

3.3 Setting levels, function blocks and planttypes

Operating level Function block Plant type4-0 4-1 5-0 5-1 6-0 6-1

End-user space heating

End user d.h.w. heating

End-user

End-user general

Plant type

Space heating

Pump heating circuit

Actuator heating circuit

Boiler

Setpoint return temperature limitation

D.h.w.

Multifunctional relay

Heatingengineer

Service functions and general settings

Locking level Locking functions

The above table shows• the assignment of function blocks to the 3 operating levels• the function blocks activated with the different plant types

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3.4 Heating circuit operating modes

The operating mode is selected on the controller as follows:• Select the required heating circuit with button• Press the respective operating mode button

3.4.1 Automatic operation

• Automatic changeover from NORMAL to REDUCED temperature, and vice versa,according to the 7-day program entered

• Automatic changeover to holiday mode, and back, according to the holiday scheduleentered

• Demand-dependent switching of the heating system according to the room andoutside temperature while giving consideration to the building's thermal inertia (ECOfunction)

• Remote operation via room unit (optional)• Frost protection is ensured

3.4.2 Continuously REDUCED heating

• Continuous heating to the REDUCED temperature• With ECO function• No holiday mode• Remote operation from a room unit not possible• Frost protection is ensured

3.4.3 Continuously NORMAL heating

• Continuous heating to NORMAL temperature• No ECO function• No holiday mode• Remote operation from a room unit not possible• Frost protection is ensured

3.4.4 STAND-BY

• Heating is switched off, but is ready to operate• Frost protection is ensured

3.5 D.h.w. operating mode

D.h.w. heating is switched on and off by pressing the respective button:

• ON (button is lit): D.h.w. heating takes place independent of the heating circuit’soperating mode and control. The d.h.w. can be heated in one of 3 different ways:− According to switching program no. 2− According to the heating programs of both heating circuits (–1 h); d.h.w. is heated

when one of the 2 heating programs operates in a heating period.− Continuously (24 hours a day)If the holiday program is active in both heating circuits, d.h.w. heating and thecirculating pump are deactivated when using controllers with no bus connection (withdata bus, depending on the setting made).

• OFF (button dark): No d.h.w. heating. Frost protection is ensured

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3.6 Manual operation

The RVP33... can be switched to manual operation. In that case, the control will beswitched off.In manual operation, the various regulating units behave as follows:• Heating circuit mixing valve: no power present, but valve can be controlled manually

with the manual operation buttons ( and ): First, press button to selectthe required heating circuit.− Three-position actuators: can be driven to any position by pressing (close) and

(open)− Two-position actuators: power supply to the actuator can be switched on by

pressing button and off by pressing button• Heating circuit pump M2 is continuously running• Boiler: the 2 burner stages are continuously on. Circulating pump M1 is continuously

running• D.h.w. charging pump: charging pump M3 is continuously running• Circulating pump K6: it is continuously running• Electric immersion heater K6: it is continuously released• Multifunctional relay: it is continuously energized

3.7 Plant type and operating mode

Depending on the selected type of plant, the following operating modes are available:

Plant type no.

4–0, 5–0, 6–0 YES YES YES YES NO YES4–1, 5–1, 6–1 YES YES YES YES YES YES

3.8 Operational status and operational level

The user selects the required heating circuit operating mode by pressing the respectivebutton. Each operating mode has a maximum of 2 operational statuses – with theexception of operating mode "Continuously NORMAL heating" (only one operationalstatus possible).When the ECO function is active, and in the case of quick setback, the operationalstatus is always OFF.When the operational status is ON, there is a maximum of 3 operational levels,depending on the operating mode. The operational level is determined by the heatingprogram and the holiday program.

OFF ON OFF ON OFF ON ON

Operating mode

Operational status

Operational level

2522

B03

e

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Siemens Building Technologies Basic documentation RVP330, RVP331 CE1P2377enLandis & Staefa Division Acquisition of measured values 14.11.2000

4 Acquisition of measured values4.1 Room temperature (A6, B5 / A6, B52)4.1.1 Measurement

The following choices exist:

Connection terminal on thecontroller

AddressingRoom temperaturemeasurement with

Heating circuit 1: Heating circuit 2:

Room sensor QAA24 B5 B52 Not required

Room unit QAW50 A6 – Not required

Room unit QAW50.03 A6 A6 Switch inside

Room unit QAW70 A6 A6 QAW operating line 51

It is possible to connect 2 units per heating circuit; the controller then ascertains theaverage value of the 2 measurements, depending on the setting. The other room unitfunctions will not be affected by averaging.

4.1.2 Handling faults

If there is a short-circuit or open-circuit in one of the 2 measuring circuits, the controlresponds as follows, depending on the room temperature source (setting on operatingline 65):• No sensor (operating line 65 = 0):

A short-circuit or open-circuit has no impact on the control. A fault status messagewill not be generated

• Room unit sensor QAW... (operating line 65 = 1):In the event of a short-circuit or open-circuit, the control continues to operate with theroom model, depending on the function. A fault status message will be generated

• Room sensor QAA24 (operating line 65 = 2):In the event of a short-circuit or open-circuit, the control continues to operate with theroom model, depending on the function. A fault status message will be generated

• Average value (operating line 65 = 3):In the event of a short-circuit or open-circuit in one of the 2 measuring circuits, thecontrol continues to operate with the normally working measuring circuit. A faultstatus message will be generatedIn the case of a short-circuit or open-circuit in both measuring circuits, the controlcontinues to operate with the room model, depending on the function. Two faultstatus messages will be generated

• Automatic mode (operating line 65 = 4):Since the controller itself decides how it acquires the room temperature, no faultstatus messages can be generated

4.1.3 Room model

The controller features a room model. It simulates the development of the roomtemperature. In plants with no measurement of the room temperature, it can providecertain room functions (e.g. quick setback).For more details, refer to section "9.4.6 Room model temperature".

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4.2 Flow temperature (B1, B12)4.2.1 Measurement

Suitable are all types of temperature sensors that use a sensing element Landis &Staefa Ni 1000 Ω at 0 °C.


A short-circuit or open-circuit in the measuring circuit is identified and indicated as afault. In that case, the plant responds as follows:• Plants with three-position control:

Heating circuit pump M2 continues to run and the mixing valve will close• Plants with two-position control:

The heating circuit pump M2 continues to run and the actuator is de-energized.

4.3 Boiler temperature (B2)4.3.1 Measurement

The boiler temperature is required with plant types no. 5–x, 6–x and 3–x. Suitable areall types of temperature sensors that use a sensing element Landis & Staefa Ni 1000 Ωat 0 °C.


A short-circuit or open-circuit in the measuring circuit is identified and indicated as afault. In that case, the plant responds as follows:• The burner is switched off• Pump M1 continues to run

4.4 Outside temperature (B9)4.4.1 Measurement

The outside temperature is acquired with the outside sensor. This can be a QAC22 orQAC32:• QAC22: sensing element Landis & Staefa Ni1000 Ω at 0 °C• QAC32: sensing element NTC 575 Ω at 20 °CThe controller automatically identifies the type of sensor used.In interconnected plants, the outside temperature signal is made available via LPB.Controllers having their own sensor pass the outside temperature signal to the databus.


If there is a short-circuit or open-circuit in the measuring circuit, the controller respondsas follows, depending on the outside temperature source:• Controller not connected to the data bus (LPB):

The control operates with a fixed value of 0 °C outside temperature. A fault statusmessage will be generated

• Controller connected to the data bus (LPB):If the outside temperature is available via data bus, it will be used. A fault status

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message will not be generated (this is the normal status in interconnected plants!). Ifthere is no outside temperature available on the data bus, however, the control usesa fixed value of 0 °C outside temperature. In that case, a fault status message will begenerated

4.5 Return temperature (B7)4.5.1 Measurement

Suitable are all types of sensors that use a sensing element Landis & Staefa Ni 1000 Ω.This measured value is required for the minimum limitation of the return temperature.In interconnected plants, the return temperature with plant type no. 4–x can be acquiredvia data bus. Controllers with plant type no. 4–0 and connected sensor pass the returntemperature signal to the data bus.


If there is a short-circuit or open-circuit in the measuring circuit, and if the controllerrequires the return temperature, it responds as follows:• If there is a return temperature from a controller of the same segment available on

the data bus, it is used (only with plant type no. 4–x). No fault status message will begenerated since this is the normal status in interconnected plants

• However, if there is no return temperature available on the data bus, the returntemperature limitation functions will be deactivated and a fault status messagegenerated

4.6 Storage tank temperature (B31)4.6.1 Measurement

The storage tank temperature can be acquired as follows:• With a sensor having a sensing element Landis & Staefa Ni 1000 Ω• With a thermostat


The controller's response to faults in the measuring circuit depends on the type ofd.h.w. demand (setting on operating line 126):• With a storage tank temperature sensor (operating line 126 = 0):

If there is a short-circuit or open-circuit in the measuring circuit, a fault statusmessage will be generated The d.h.w. will no longer be heated and the chargingpump is deactivated

• With a storage tank thermostat (operating line 126 = 1):If, in measuring circuit B31, there is neither an open-circuit (thermostat open) nor ashort-circuit (thermostat closed), a fault status message will be generated. Thed.h.w. will no longer be heated and the charging pump is deactivated

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Siemens Building Technologies Basic documentation RVP330, RVP331 CE1P2377enLandis & Staefa Division Function block "End-user space heating" 14.11.2000

5 Function block "End-user spaceheating"

This function block contains settings that the end-user himself can make.

5.1 Operating lines

Line Function, parameter Unit Factorysetting

Range Heatingcircuit

1 Setpoint of NORMAL heating °C 20.0 0...35 1, 2

2 Setpoint of REDUCED heating °C 14.0 0...35 1, 2

3 Setpoint of holiday mode / frost protection °C 10.0 0...35 1, 2

4 Weekday for the heating program 1-7 1...7, 1-7 1, 2

5 First heating period, start of NORMAL heating hh:mm 06:00 --:-- / 00:00...24:00 1, 2

6 First heating period, start of REDUCED heating hh:mm 22:00 --:-- / 00:00...24:00 1, 2

7 Second heating period, start of NORMAL heating hh:mm --:-- --:-- / 00:00...24:00 1, 2

8 Second heating period, start of REDUCED heating hh:mm --:-- --:-- / 00:00...24:00 1, 2

9 Third heating period, start of NORMAL heating hh:mm --:-- --:-- / 00:00...24:00 1, 2

10 Third heating period, start of REDUCED heating hh:mm --:-- --:-- / 00:00...24:00 1, 2

12 Date of first day of holiday dd:MM --:-- --:-- / 01.01. ... 31.12. 1, 2

13 Date of last day of holiday dd:MM --:-- --:-- / 01.01. ... 31.12. 1, 2

14 Heating curve, flow temperature setpoint TV1 atan outside temperature of 15 °C

°C 30 20...70 1, 2

15 Heating curve, flow temperature setpoint TV2 atan outside temperature of –5 °C

°C 60 20...120 1, 2

In column "Heating circuit" it is indicated for each operating line which heating circuitcan be set and how the setting affects the heating circuits. The numbers on the displayhave the following meaning:1 = the settings only apply to heating circuit 12 = the settings only apply to heating circuit 21, 2 = the settings must be made separately for both heating circuits1+2 = the settings apply to both heating circuits– = the settings or the function are independent of the heating circuits

5.2 Setpoints5.2.1 General

The setpoints of the NORMAL and the REDUCED room temperature and of frostprotection for the plant / holiday mode are entered directly in °C room temperature.They are independent of whether or not the control uses a room sensor.

5.2.2 Frost protection for the building

The lowest valid room temperature setpoint always corresponds to at least the setpointof holiday mode / frost protection (setting on operating line 3), even if lower values havebeen entered as the setpoints of the NORMAL and the REDUCED room temperature(settings on operating lines 1 and 2).If a room sensor is used and the room temperature falls below the holiday / frostprotection setpoint, ECO – if available – will stop OFF until the room temperature hasrisen 1 °C above the holiday / frost protection setpoint.

Note on the operating linetables

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Siemens Building Technologies Basic documentation RVP330, RVP331 CE1P2377enLandis & Staefa Division Function block "End-user space heating" 14.11.2000

5.3 Heating program

The heating program provides a maximum of 3 heating periods per day; also, everyweekday may have different heating periods.

The entries to be made are not the switching times, but the periods of time during whichthe NORMAL room temperature shall apply. Usually, these periods of time are identicalto the building's occupancy times. The actual switching times for the change from theREDUCED to the NORMAL room temperature, and vice versa, are calculated by theoptimization function. ( Precondition: optimization is acivated).Using the setting "1-7" on operating line 4, it is possible to enter a heating program thatapplies to all days of the week. This simplifies the settings: If the weekend times differ,enter the times for the entire week first, and then change days 6 and 7 as required.The settings are sorted and overlapping heating periods combined.

5.4 Holiday program

One holiday period per year can be programmed. At 00:00 of the first day of the holidayperiod, changeover to the setpoint for frost protection / holiday mode takes place. At24:00 of the last day of the holiday period, the controller will change to NORMAL orREDUCED heating in accordance with the time switch settings.The settings of the holiday period will be cleared as soon as it has elapsed.Depending on the entry made on operating line 121, the holiday function will switch offd.h.w. heating and the circulating pump.The holiday program is only active in AUTO mode.

5.5 Heating curve

The heating curve can be adjusted on operating lines 14 and 15. For details, refer tosection "9.6 Heating curve".

Caution

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Siemens Building Technologies Basic documentation RVP330, RVP331 CE1P2377enLandis & Staefa Division Function block "End-user d.h.w." 14.11.2000

6 Function block "End-user d.h.w."This function block contains one setting for the d.h.w. temperature that the end-userhimself can make.

6.1 Operating line



26 Setpoint of the d.h.w. temperature °C 55 20...100 –

6.2 Setpoint

The setpoint of the d.h.w. temperature is to be entered in °C. When using a thermostat,it must be made certain that the setpoint entered here agrees with the setpoint of thethermostat. If there is a differential, the charging temperature cannot be correctlycalculated (charging temperature = setpoint [operating line 26] + boost of chargingtemperature [operating line 127]).If d.h.w. heating is switched to the electric immersion heater, the setpoint adjustment isinactive in that case, since the thermostat of the electric immersion heater will ensuretemperature control of the storage tank.

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Siemens Building Technologies Basic documentation RVP330, RVP331 CE1P2377enLandis & Staefa Division Function block "End-user general" 14.11.2000

7 Function block "End-user general"This function block contains settings that the end-user himself can make, as well asindication of faults.

7.1 Operating lines



31 Weekday for switching program 2 1-7 1...7, 1-7 –

32 Start of first ON period hh:mm 05:00 --:-- / 00:00...24:00 –

33 End of first ON period hh:mm 22:00 --:-- / 00:00...24:00 –

34 Start of second ON period hh:mm --:-- --:-- / 00:00...24:00 –

35 End of second ON period hh:mm --:-- --:-- / 00:00...24:00 –

36 Start of third ON period hh:mm --:-- --:-- / 00:00...24:00 –

37 End of third ON period hh:mm --:-- --:-- / 00:00...24:00 –

38 Time of day hh:mm 00:00...23:59 –

39 Weekday 1...7 –

40 Date dd:MM 01.01. ... 31.12. –

41 Year yyyy 1995...2094 –

50 Indication of faults 0...255 –

7.2 Switching program 2

Switching program 2 can be used for one or several of the following functions:• As a time switch program for the circulating pump• As a time switch program for the release of d.h.w. heatingSwitching program 2 of the controller affords up to 3 ON periods per day. Also, everyweekday may have different ON periods.As with the heating program, it is not the "switching times" that are to be entered, butthe periods of time during which the program or the controlled function shall be active.Using setting "1-7" on operating line 31, it is possible to enter a switching program thatapplies to all days of the week. This simplifies the settings: If the weekend times aredifferent, first enter the times for the entire week, then change days 6 and 7 asrequired.The entries are sorted and overlapping ON periods combined.

7.3 Time of day and date

The RVP33... have a yearly clock to enter the time of day, weekday and date.The changeover from summer- to wintertime, and vice versa, takes place automatically.Should the respective regulations change, the changeover dates can be adjusted (refer tochapter "16 Function block "Service functions and general settings" ").

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Siemens Building Technologies Basic documentation RVP330, RVP331 CE1P2377enLandis & Staefa Division Function block "End-user general" 14.11.2000

7.4 Indication of faults

The following faults are indicated:

Number Fault

10 Open-circuit or short-circuit in the outside sensor's measuring circuit (B9)

20 Open-circuit or short-circuit in the measuring circuit of the boiler sensor(B2)

30 Open-circuit or short-circuit in the measuring circuit of the flow sensor(B1) in heating circuit 1

32 Open-circuit or short-circuit in the measuring circuit of the flow sensor(B12) in heating circuit 2

40 Open-circuit or short-circuit in the measuring circuit of the return sensor(B7)

50 Fault in the measuring circuit of the d.h.w. storage tank sensor /thermostat (B31)

60 Open-circuit or short-circuit in the measuring circuit of the room sensor(B5) in heating circuit 2

61 Open-circuit or short-circuit in the measuring circuit of the room unit'ssensor (A6) in heating circuit 2

62 Wrong room unit connected in heating circuit 1

65 Open-circuit or short-circuit in the measuring circuit of the room sensor(B52) in heating circuit 2

66 Open-circuit or short-circuit in the measuring circuit of the room unit'ssensor (A6) in heating circuit 2

67 Wrong room unit connected in heating circuit 2

81* Short-circuit on data bus (LPB)

82* Bus address on the data bus (LPB) exists several times

100* 2 clock masters on the data bus (LPB)

140* Inadmissible bus address (LPB) or inadmissible plant type* These indications of fault are only possible with the RVP330

If a fault occurs, the LCD displays Er.In interconnected plants, the address (device and segment number) of the controllercausing the fault is indicated on all the other controllers. No address will appear on thecontroller causing the fault.

Example of display in interconnected plants:

50200602

= operating line= error number= segment number (LPB)= device number (LPB)

The fault status message disappears only after rectification of the fault. There will be noacknowledgement!

Example

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Siemens Building Technologies Basic documentation RVP330, RVP331 CE1P2377enLandis & Staefa Division Function block "Plant type" 14.11.2000

8 Function block "Plant type"This function block only contains the selection of the plant type.

8.1 Operating line

Line Function, parameter Factory setting Range Heating circuit

51 Plant type 5–1 4–0 ... 6–1 –

8.2 General

When commissioning the plant, the respective plant type must be entered first. Thisensures that the functions required for the specific type of plant, the parameters andoperating lines for the settings and displays will be activated.All plant-specific variables and operating lines existing for the other plant types will thenbe hidden. They will not be displayed.

Example of a selection:

2477

Z02 5

1= heating circuit type no. 5= d.h.w. circuit type no. 1

Example

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Siemens Building Technologies Basic documentation RVP330, RVP331 CE1P2377enLandis & Staefa Division Function block "Space heating" 14.11.2000

9 Function block "Space heating"This function block performs the ECO function, the optimization functions with boostheating and quick setback, as well as the room influence.

9.1 Operating lines



61 Heating limit for NORMAL heating (ECO day) °C 17.0 --.- / −5...+25 1, 2

62 Heating limit for REDUCED heating (ECO night) °C 5.0 --.- / –5...+25 1, 2

63 Building time constant h 20 0...50 1+2

64 Quick setback 1 0 / 1 1, 2

65 Room temperature source A 0 / A 1, 2

66 Type of optimization 0 0 / 1 1, 2

67 Maximum heating up time hh:mm 00:00 00:00...42:00 1, 2

68 Maximum early shutdown hh:mm 0:00 0:00...6:00 1, 2

69 Maximum limitation of the room temperature °C --.- --.- / 0...35 1, 2

70 Gain factor for the room influence 4 0...20 1, 2

71 Boost of the room temperature setpoint °C 5 0...20 1, 2

9.2 ECO function

The ECO function controls space heating depending on demand. It gives considerationto the development of the room temperature depending on the type of buildingconstruction as the outside temperature varies. If the amount of heat stored in thehouse or building is sufficient to maintain the room temperature setpoint currentlyrequired, the ECO function will switch the heating off.When using the ECO function, the heating system operates only, or consumes energyonly, when required.

9.2.1 Compensating variables and auxiliary variables

As compensating and auxiliary variables, the ECO function takes into account thedevelopment of the outside temperature and the heat storage capacity of the building.The following variables are taken into consideration:• The building time constant: this is a measure of the type of building construction and

indicates how quickly the room temperature would change if the outside temperaturewas suddenly changed. The following guide values can be used for setting thebuilding time constant: 10 hours for light, 25 hours for medium, and 50 hours forheavy building structures

• The actual outside temperature (TA)• The composite outside temperature (TAM). which is the mean value of:

− the actual outside temperature, and− the outside temperature filtered by the building time constantCompared with the actual outside temperature, the composite outside temperature isattenuated. Hence, it represents the effects of short-time outside temperaturevariations on the room temperature as they often occur during intermediate seasons(spring and autumn)

• The attenuated outside temperature (TAD): it is generated by filtering twice the actualoutside temperature by the building time constant. This means that, compared withthe actual outside temperature, the attenuated outside temperature is considerablydampened. This ensures that no heating will take place in the summer when, under

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normal circumstances, the heating would be switched on because the outsidetemperature drops for a few days

TA (B9 rsp. BUS)

2522

B02

TA

k t

k t

TAD

TAM

Generation of the composite and attenuated outside temperatureTA Actual outside temperature TAM Composite outside temperatureTAD Attenuated outside temperature kt Building time constant

0

5

10

15

20

25

TAD

TAM

t

2522

D17

TA

TA

Development of the actual, composite and attenuated outside temperatureTA Actual outside temperature TAM Composite outside temperatureTAD Attenuated outside temperature t Time

9.2.2 Heating limits

The following heating limits can be set:• "ECO day" for NORMAL heating• "ECO night" for the lower temperature level. This can be REDUCED heating or OFF

(holidays / frost protection)In both cases, the heating limit is the outside temperature at which the heating shall beswitched on and off. The switching differential is 1 °C.

9.2.3 Mode of operation

The heating will be switched off when one of the 3 following conditions is satisfied:• The actual outside temperature exceeds the current ECO heating limit• The composite outside temperature exceeds the current ECO heating limit• The attenuated outside temperature exceeds the "ECO day" heating limitIn all these cases, it is assumed that the amount of heat entering the building envelopefrom outside or the amount of heat stored in the building structure will be sufficient tomaintain the required room temperature level.When the ECO function has switched the heating off, the display shows ECO.

Switching the heating off

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The heating will be switched on again only when all 3 of the following conditions aresatisfied:• The actual outside temperature has fallen 1 °C below the current ECO heating limit• The composite outside temperature has fallen 1 °C below the current ECO heating

limit• The attenuated outside temperature has fallen 1 °C below the "ECO day" heating

limit

The ECO function is performed depending on the operating mode:

Operating mode or operational status ECO function Current heating limit

Automatic operation active ECO day or ECO night

Continuously REDUCED heating active ECO night

Continuously NORMAL heating inactive –

STAND-BY active ECO night

Frost protection / holiday mode active ECO night

Manual operation inactive –

9.3 Room temperature source

The outside temperature source can be selected on operating line 65. The followingsettings are available:

Operating line 65 Room temperature source

0 No room sensor present

1 Room unit at terminal A6

2 Room sensor at terminal B5 or B52

3 Mean value of the 2 devices at terminals A6 and B5 or A6 and B52

A Automatic selection

In addition, the room temperature source effectively used by the controller is shown onoperating line 65 and appears as a number on the right side of the LCD:

0 = controller operates without a sensor1 = controller operates with a room unit connected to terminal A62 = controller operates with a room sensor connected to terminal B5 or B523 = controller operates with the mean value of the devices connected to terminals A6

and B5 or A6 and B52

9.4 Optimization9.4.1 Definition and purpose

Operation of the heating system is optimized EN 12 098 defines optimization is the"automatic shifting of the switch-on and switch-off points aimed at saving energy". Thismeans that:• Switching on and heating up as well as switching off are controlled such that during

building occupancy times the required room temperature level will always beensured

• The smallest possible amounts of energy will be used to achieve this objective

Switching the heating on

Operating modes andoperational statuses

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9.4.2 Fundamentals

It is possible to select or set:• The type of optimization: either with a room sensor / room unit or based on the room

model• The maximum limit value for the heating-up time• The maximum limit value for optimum shutdown• Quick setback: yes or noTo perform the optimization function, the controller makes use of the actual roomtemperature – acquired by a room sensor or room unit – or the room model.

9.4.3 Optimization with room sensor

Using a room sensor or room unit, it is possible to have optimum start and optimumstop control.To be able to optimally determine the switch-on and switch-off points, optimizationneeds to "know" the building's heating up and cooling down characteristics, always as afunction of the prevailing outside temperature. For this purpose, optimization continuallyacquires the room temperature and the respective outside temperature. It capturesthese variables via the room sensor and the outside sensor and continually adjusts theforward shift of the switching points. In this ways, optimization can also detect changesmade to the house or building and to take them into consideration.The learning process always concentrates on the first heating period per day.

9.4.4 Optimization without room sensor

When no room temperature sensor is used, the room model only allows for optimumstart control.Optimization operates with fixed values (no learning process), based on the setmaximum heating up time and the room model.

9.4.5 Process

HP

TRw TRx

TRwTRw

TRw

HP Heating programTR Room temperaturet Timet1 Forward shift for early shutdownt2 Forward shift for the start of heating upt3 Quick setbackTRw Room temperature setpointTRw Setpoint of the NORMAL room temperatureTRw Setpoint of the REDUCED room temperature∆TRw Boost of room temperature setpoint (with boost heating)TRx Actual value of the room temperature

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9.4.6 Room model temperature

To ascertain the room temperature generated by the room model, a distinction must bemade between two cases:• The controller is not in quick setback mode:

The room temperature generated by the room model is identical to the current roomtemperature setpoint

• The controller is in setback mode:The room temperature generated by the room model is determined according to thefollowing formula:

t

Room model temperature TRM [°C] = (TRw - TAM ) * e 3 * kt

2522

D18

t1

TRwTRM

TRw

TRw

Development of the room temperature generated by the room modele 2.71828 (basis of natural logarithms) TR Room temperaturekt Building time constant in hours TRM Room model temperaturet Time in hours TRw Setpoint of the NORMAL room temperaturet1 Quick setback TRw Setpoint of the REDUCED room temperatureTAM Composite outside temperature

9.4.7 Optimum stop control

During the building's occupancy time, the controller maintains the setpoint of NORMALheating. Towards the end of the occupancy time, the control switches to the REDUCEDsetpoint. Optimization calculates the changeover time such that, at the end ofoccupancy, the room temperature will be 0.5 °C below the setpoint of NORMAL heating(optimum shut-down).By entering 0 hours as the maximum optimum shut-down, optimum stop control can bedeactivated.

9.4.8 Quick setback

When changing from the NORMAL temperature to a lower temperature level(REDUCED or holidays / frost), the heating will be shut down. And it will remain shutdown until the setpoint of the lower temperature level is reached.• When using a room sensor, the effective actual value of the room temperature is

taken into account• When using no room sensor, the actual value is simulated by the room model

The duration is determined according to the following formula

TRw - TAM

t [ h ] = 3 * kt * (- ln ———————— )TRw - TAM

ln Natural logarithm TAM Composite outside temperaturekt Building time constant in hours TRw Setpoint of the NORMAL room temperaturet Duration of quick setback TRw Setpoint of the REDUCED room temperature

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9.4.9 Optimum start control

During the building's non-occupancy times, the controller maintains the setpoint ofREDUCED heating. Toward the end of the non-occupancy time, optimization switchesthe control to boost heating. This means that the selected boost will be added to theroom temperature setpoint. Optimization calculates the changeover time such that, atthe start of occupancy, the room temperature will have reached the setpoint ofNORMAL heating.When the room temperature is simulated by the room model, that is, when using noroom sensor, the forward shift in time is calculated as follows:

t [ min ] = ( TRw - TRM ) * 60

t Forward shiftTRw Setpoint of the NORMAL room temperatureTRM Room model temperature

Optimum start control with the room model takes place only if, previously, quick setbacktook place.

Optimum start control can be deactivated by entering 0 hours as the maximum heatingup period.

9.4.10 Boost heating

For boost heating, a room temperature setpoint boost can be set.After changeover to the NORMAL temperature, the higher room temperature setpointapplies, resulting in an appropriately higher flow temperature setpoint.D.h.w. heating during boost heating does not affect the latter.

t

2522

D08

TR

TRw

TRx

TRw

TRw

TRw

t TimeTR Room temperatureTRw Setpoint of the NORMAL room temperatureTRw Setpoint of the REDUCED room temperatureTRx Actual value of the room temperatureTRw Room temperature setpoint∆TRw Boost of room temperature setpoint (with boost heating)

Duration of boost:• When using a room sensor, boost heating is maintained until the room temperature

has reached the setpoint of NORMAL heating. Then, that setpoint will be used again• When using no room sensor, the room model calculates how long boost heating will

be maintained. The duration is determined according to the following formula

TRw - TRM1 k t

t1 [ h ] = 2 * ——————— * ———TRw - TRw 20

The duration of the boost is limited to 2 hours.

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t

2522

D19

TRM

TR

t 1

TRM1

TRw

TRw

TRw

TRw

k t Building time constant in hourst Timet1 Duration of room temperature setpoint boost with boost heatingTR Room temperatureTRw Setpoint of the NORMAL room temperatureTRw Setpoint of the REDUCED room temperatureTRM Room model temperatureTRM1 Room model temperature at the beginning of boost heatingTRw Room temperature setpoint∆TRw Boost of room temperature setpoint (with boost heating)

9.5 Room functions9.5.1 Maximum limitation of the room temperature

For the room temperature, it is possible to have an adjustable maximum limitation. Aroom sensor (sensor or room unit) is required in that case.If the room temperature lies 1 °C above the limit value, the room temperature setpointwill be lowered by 4 °C.Maximum limitation of the room temperature is independent of the setting used for theroom influence.If the room temperature lies above the limit value, the display shows .The reduction of the flow temperature setpoint ∆TVw is calculated as follows:

∆TVw [K] = ∆TRw * ( 1 + s )

-1 -0,5 0,5 1 1,5 2 2,5 3

TRw

TR

s Heating curve slope∆TRw Reduction of the room temperature setpoint∆TR Deviation of the room temperature∆TVw Reduction of the flow temperature setpoint

9.5.2 Room influence

The room temperature is included in the control process. Required is a room sensor(sensor or room unit).The gain factor of the room temperature influence on the flow temperature control canbe adjusted. This indicates to what extent deviations of the actual room temperaturefrom the setpoint have an impact on the flow temperature control:

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0 = room temperature deviations have no impact on the generation of the setpoint20 = room temperature deviations have a maximum impact on the generation of the

setpoint

The change of the room temperature setpoint ∆TRw is calculated according to thefollowing formula:

VF∆TRw [K] = ————– * ( TRw - TRx )

2

TRw

TR

TRw

The change of the flow temperature setpoint ∆TVw resulting from the change of theroom temperature setpoint is calculated as follows:

∆TVw [K] = ∆TRw * ( 1 + s )

s Heating curve slopeTRw Room temperature setpoint∆TRw Change of room temperature setpoint−∆TRw Decrease of room temperature setpoint+∆TRw Increase of room temperature setpointTRx Actual value of the room temperature∆TR Room temperature deviation (TRw-TRx)∆TVw Change of flow temperature setpointVF Gain factor

9.6 Heating curve9.6.1 Purpose

With the space heating systems, flow temperature control is always weather-compensated. The assignment of the flow temperature setpoint to the prevailingoutside temperature is made via the heating curve.

9.6.2 Settings

The setting of the heating curve is made via 2 operating lines. The following settingsare required:• Flow temperature setpoint at an outside temperature of −5 °C• Flow temperature setpoint at an outside temperature of 15 °CThe basic setting during commissioning is made according to the planningdocumentation or in agreement with local practices.It is made on operating lines 14 and 15.

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247

4Z

06

120

110

100

90

80

70

60

40

30

20

10

20 15 10 5 0 -5

50

-10 -15 -20 -30

BZ 14 BZ 15

TVw

TA

Heating curve chart showing the basic settingBZ 14 Setting on operating line 14, flow temperature setpoint at 15 °C outside temperatureBZ 15 Setting on operating line 15, flow temperature setpoint at –5 °C outside temperatureTA Outside temperatureTVw Flow temperature setpoint

9.6.3 Deflection

The heat losses of a building are proportional to the difference between roomtemperature and outside temperature. By contrast, the heat output of radiators does notincrease proportionally when the difference between radiator and room temperatureincreases. For this reason, the radiators' heat exchanger characteristic is deflected. Theheating curve's deflection takes these properties into consideration.In the range of small slopes (e.g. with underfloor heating systems), the heating curve ispractically linear – due to the small flow temperature range – and therefore correspondsto the characteristic of low temperature heating systems.

The slope "s" is determined according to the following formula:

TVw(−5) − TVw(+15)

s = —————————20 K

s Heating curve slopeTVw(−5) Flow temperature setpoint at an outside temperature of −5 °CTVw(+15) Flow temperature setpoint at an outside temperature of +15 °C

The heating curve is valid for a room temperature setpoint of 20 °C.

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9.6.4 Parallel displacement of heating curve

The heating curve can be displaced parallel with the setting knob for room temperaturereadjustments. The readjustment can be made by the end-user and covers a maximumrange of −4.5...+4.5 °C room temperature.The parallel displacement of the heating curve is calculated as follows:

Parallel displacement ∆TFlow = ( ∆TKnob ) * ( 1 + s )

20 10 0 -10 -20 -30

90

80

70

60

50

40

30

2522

D10

100

0

1010

0

30

TRw

TA

TV

Parallel displacement of heating curve

s SlopeTA Outside temperatureTV Flow temperatureTRw Room temperature setpoint

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9.7 Generation of setpoint

All plant types use weather-compensated control systems. The setpoint is generated viathe heating curve as a function of the outside temperature. The temperature used is thecomposite outside temperature.

SYNERGYROZW30

1 + s

20 °C

1 + s

24

74

B0

1e

scomposite outsidetemperatur

setting knobroom unit *

heating curve

setting knobon controller

flow temperaturesetpoint TVw

room setpoint

or

operating line1, 2 oder 3

LPB Data busOZW30 SYNERGYR central units Slope* Active only with room unit level

The impact of the central unit OZW30 is described in section "18.1.4 Combination withSYNERGYR central unit OZW30".

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Siemens Building Technologies Basic documentation RVP330, RVP331 CE1P2377enLandis & Staefa Division Function block "Pump heating circuit" 14.11.2000

10 Function block "Pump heatingcircuit"

This function block ensures protection against overtemperatures in the pump heatingcircuit.

10.1 Operating line



75 Overtemperature protection of the pump heating circuit 1 0 / 1 1

10.2 Protection against overtemperatures

The flow temperature can be higher than the temperature called for by the pumpheating circuit. This is the case when some other consumer (heating circuit 2 or someother heating zone) generates a higher flow temperature setpoint than the pumpheating circuit.The controller offsets the surplus energy by letting the pump cycle, thus preventing thepump heating circuit from overheating.The pump’s cycling time is fixed at 10 minutes. The on time ε is calculated as follows:

TVw − TRw

ε [ min ] = ––––––––––– * 10TKx − TRw

ε On time in minutesTRw Room temperature setpointTVw Flow temperature setpointTKx Boiler temperature

The on time of the heating circuit pump is limited as follows:• The pump’s minimum on time is 3 minutes• If the calculated on time exceeds 8 minutes, the pump will continuously run

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Siemens Building Technologies Basic documentation RVP330, RVP331 CE1P2377enLandis & Staefa Division Function block "Actuator heating circuit" 14.11.2000

11 Function block "Actuator heatingcircuit"

This function block provides control of the heating circuit. Depending on the plant type,it acts as follows:• Weather-compensated, on the mixing valve of a space heating system• Weather-compensated, on the valve in the primary return of a space heating system

with a district heat connection

11.1 Operating lines



81 Maximum limitation of the flow temperature °C --- --- / 0...140 1, 2

82 Minimum limitation of the flow temperature °C --- --- / 0...140 1, 2

83 Maximum rate of flow temperature increase °C/h --- --- / 1...600 1, 2

84 Boost of flow temperature setpoint mixing valve °C 10 0...50 1, 2

85 Actuator running time s 120 30...873 1, 2

86 P-band of control °C 32.0 1...100 1, 2

87 Integral action time of control s 120 30...873 1, 2

88 Type of actuator 1 0 / 1 1, 2

89 Switching differential °C 2 1...20 1, 2

11.2 Limitations11.2.1 Flow temperature limitations

The following settings can be made:• Maximum limitation of the flow temperature. At the limit value, the heating curve runs

horizontally. This means that the flow temperature setpoint cannot exceed themaximum value

• Minimum limitation of the flow temperature: At the limit value, the heating curve runshorizontally. This means that the flow temperature setpoint cannot fall below theminimum value (exception: with locking signals)

If the setpoint is limited, the display shows:= for maximum limitation= for minimum limitation

Both limitations can be deactivated (setting ---).

Minimum limitation is also active during storage tank charging, depending on the kind ofpriority.

11.2.2 Setpoint rise

t

t

2522

D07

TVw

TVw

∆TVw

Maximum rise: = –––––∆t

t TimeTVw Flow temperature setpoi∆t Unit of time∆TVw Rate of setpoint increase per unit of time

Settings

Impact on d.h.w. heating

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The rate of increase of the flow temperature setpoint can be limited to a maximum("heating up brake”). In that case, the maximum rate of increase of the flow temperaturesetpoint is the selected temperature per unit of time (°C per hour). This function• prevents cracking noises in the piping• protects objects and construction materials that are sensitive to quick temperature

increases (e.g. antiquities)• prevents excessive loads on heat generating equipmentIn the case of space heating with a pump heating circuit (plant type no. 6–x) maximumlimitation of the setpoint increase is not possible.This function can be deactivated (setting ---).

11.3 Type of actuator

On operating line 88, it is possible to select the type of actuator (type of control):0 = two-position control1 = three-position control

11.3.1 Two-position control

Two-position control operates as weather-compensated flow temperature control. Flowtemperature control is provided by the ON / OFF action of the regulating unit (mixingvalve). The associated switching differential can be adjusted on operating line 89.

2474

D01

ON

OFF

TVw

SD2

SD2

TV

ON Actuator operatingOFF Actuator without power supplySD Switching differential (operating line 89)TV Flow temperatureTVw Flow temperature setpoint

11.3.2 Three-position control

Three-position control operates as weather-compensated PI flow temperature control.The flow temperature is controlled through a modulating regulating unit (slipper or seatvalve). Owing to the I-part, there is no control offset.

11.4 Auxiliary variables in interconnected plants11.4.1 Excess mixing valve temperature

An excess mixing valve temperature can be entered on the controller. This is a boost ofthe respective heating zone's flow temperature setpoint. The higher setpoint isdelivered to the heat generating equipment as the heat demand signal (in the controlleritself or via data bus).

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The excess mixing valve temperature is set on the controller that drives the mixingvalve (controller N2 in the example below) (operating line 84).

N2

wN2wN1 = wN2 + w

2522

S07

wN2 + w

w

N1 Boiler temperature controller (heat generation)N2 Flow temperature controller (heating zone)wN1 Setpoint of boiler temperature controllerwN2 Setpoint of flow temperature controller∆w Excess mixing valve temperature (set on controller N2)

11.5 Pulse lock with three-position actuator

If, during a period of time that equals 5 times the running time, the three-positionactuator has received only closing or only opening pulses, additional closing pulsesdelivered by the controller will be locked. This minimizes the strain on the actuator.For safety reasons, the controller delivers a one-minute closing pulse at 10-minuteintervals.An opening pulse negates the pulse lock.

Example

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Siemens Building Technologies Basic documentation RVP330, RVP331 CE1P2377enLandis & Staefa Division Function block "Boiler" 14.11.2000

12 Function block "Boiler"Function block "Boiler" acts as a two-position controller and is used for direct burnercontrol. The function block operates either as demand-dependent boiler temperaturecontroller of a common flow, which supplies heat to one or several consumers.




91 Operating mode of the boiler 0 0...2 –

92 Maximum limitation of the boiler temperature °C 95 25...140 –

93 Minimum limitation of the boiler temperature °C 10 5...140 –

94 Switching differential of the boiler °C 6 1...20 –

95 Minimum limitation of the burner running time min 4 0...10 –

96 Release limit for second burner stage °C*min 50 0...500 –

97 Reset limit for second burner stage °C*min 10 0...500 –

98 Waiting time for second burner stage min 20 0...40 –

99 Operating mode pump M1 1 0 / 1 –

12.2 Operating mode

The boiler’s operating mode for situations when there is no demand for heat (e.g. dueto the ECO function),can be selected: 3 operating modes are available:• With manual shut-down: the boiler will be shut down when there is no demand for

heat and the stand-by mode is selected (setting 0 on operating line 91)• With automatic shut-down: the boiler will be shut down when there is no demand for

heat, irrespective of the selected operating mode (setting 1 on operating line 91)• With no shut-down: the boiler will never be shut down; it always maintains the

minimum setpoint (setting 2 on operating line 91)

Boiler operating modes, when there is no demand for heat:

Controller's Boiler operating modeoperating mode With manual shut-down With automatic

shut-downWith no shut-down

Stand-by Boiler OFF Boiler OFF Boiler at minimumlimit value

AUTO Boiler at minimum limitvalue

Boiler OFF Boiler at minimumlimit value

REDUCED Boiler at minimum limitvalue


NORMAL Boiler at minimum limitvalue


When there is demand for heat, the boiler always supplies heat, which means that theboiler's operating mode in that case is always ON.

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12.3 Limitations12.3.1 Maximum limitation of the boiler temperature:

For maximum limitation of the boiler temperature, the maximum limit value can beadjusted. The switch-off point cannot exceed the maximum limit value. The switch-onpoint will then be lower by the amount of the set switching differential.If the return temperature is limited, the display shows .This maximum limitation cannot be used as a safety function; for that purpose,thermostats, thermal reset limit thermostats, etc., must be used.

12.3.2 Minimum limitation of the boiler temperature:

For minimum limitation of the boiler temperature, the minimum limit value can beadjusted. The switch-on point cannot fall below the minimum limit value. The switch-offpoint will then be higher by the amount of the set switching differential If minimumlimitation of the boiler temperature is provided, the display shows .

12.3.3 Actions during d.h.w. heating

Both the maximum and the minimum limitation also act during d.h.w. heating.

12.4 Two-position control

Two-position control maintains the required boiler temperature by switching a single- or2-stage burner on and off.

12.4.1 Control with a single-stage burner

For two-position control with a single-stage burner, the variables that can be set are theswitching differential and the minimum burner running time.The controller compares the actual value of the boiler temperature with the setpoint. Ifthe boiler temperature falls below the setpoint by half the switching differential, theburner will be switched on. If the boiler temperature exceeds the setpoint by half theswitching differential, the burner will be switched off.

TK

2524

D06

ON

OFF

TKw

SD2

SD2

SD Switching differentialTK Boiler temperatureTKw Boiler temperature setpoint

If there is no more deviation before the minimum burner running time has elapsed, theburner will nevertheless continue to operate until that time is completed (burner cyclingprotection). This means that the minimum burner running time has priority. Maximum

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limitation of the boiler temperature will be maintained, however, which always leads toburner shut-down.

TKw + 0,5 *SD

0

1

2522

D14

TK

TKw

TKw - 0,5 *SD

TKx

tYB

SD Switching differential TKw Boiler temperature setpointt Time TKx Actual value of boiler temperatureTKx Boiler temperature YB Burner control signal

Note: when controlling a single-stage burner, the reset limit of the second stage shouldbe set to zero.

12.4.2 Control with a 2-stage burner

For two-position control with a 2-stage burner, the variables that can be set are theswitching differential and the minimum burner running time – which now apply to bothstages – plus the following variables:• The release limit (FGI) for the second stage. This is the variable generated from the

temperature (T) and the time (t). If the maximum limit is exceeded, the secondburner stage is released and can switch on, provided the minimum waiting time forthe second stage has elapsed Prerequisite is that the minimum locking time for thesecond stage has elapsed.

FGI = ∆T dtt

0 where: ∆T = ( w − 0.5 * SD − x ) > 0

• The reset limit (RSI). This is the variable generated from the temperature (T) and thetime (t). If the maximum limit is exceeded, the burner will be locked and switches off

RSI = ∆T dtt

0 where: ∆T = ( x − w + 0.5 * SD ) > 0

• The minimum locking time for the second stage, which is the period of time oncompletion of which the second stage can switch on at the earliest

The controller compares the actual value of the flow temperature with the setpoint. If itfalls below the setpoint by half the switching differential (x < w − 0.5 * SD), the firstburner stage will be switched on. At the same time, the minimum waiting time for thesecond burner stage commences and the release limit (integral) is being generated.The controller ascertains for how long and by how much the flow temperature remainsbelow w − 0.5 * SD. It continually generates the release limit based on the time and thetemperature.If, on completion of the minimum locking time, the flow temperature is beloww − 0.5 * SD, and if the release limit reaches the set maximum limit, the second burnerstage will be released and switched on. The flow temperature starts rising.When the flow temperature has exceeded the setpoint by half the switching differential(x = w + 0.5 * SD), the second burner stage is switched off again, but will remainreleased. The first stage continues to operate. If the flow temperature drops, thesecond stage will be switched on again at x < w − 0.5 * SD. The setpoint is nowmaintained by the second burner stage.If, however, the flow temperature continues to rise (x > w + 0.5 * SD), the controller

Setting parameters

Control process

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starts generating the reset limit (integral). It determines for how long and to what extentthe flow temperature stays above the setpoint by half the switching differential. Itcontinually generates the reset limit based on the time and the temperature. When thereset limit reaches the set maximum limit, the second burner stage will be locked andthe first stage switched off.The minimum locking time and calculation of the release limit at x < w − 0.5 * SD arestarted when the switch-on command for the first burner stage is given.Due to the time-temperature integral, it is not only the duration of the deviation that isconsidered, but also its extent, when deciding whether the second stage shall beswitched on or off.

SD Switching differentialw Boiler temperature setpointx Actual value of boiler temperature

1

0

INT

max.

FGB2

1

0

YB2

t

FGI RSI

2522

D09

0

1

0

t

t

t

t

YB1

max.

TKw + 0,5 *SD

TKw - 0,5 *SD

TKx

RSI

FGB2 Release of burner stage 2 t TimeFGI Release limit TKw Boiler temperature setpointINT Integral TKx Actual value of boiler temperatureRSI Reset limit YB1 Control signal for burner stage 1SD Switching differential YB2 Control signal for burner stage 2

12.4.3 Frost protection for the boiler

Frost protection for the boiler operates with fixed values:• Switch-on point: 5 °C boiler temperature• Switch-off point: minimum limit of the boiler temperature plus switching differentialIf the boiler temperature falls below 5 °C, the burner will always be switched on until theboiler temperature has crossed the minimum limit by the amount of the switchingdifferential.

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12.4.4 Protective boiler start-up

If the boiler temperature falls below the minimum limit of the boiler temperature whilethe burner is running, the differential (minimum limit value minus actual value) will beintegrated. From this, a critical locking signal will be generated and transmitted to theconnected loads. This causes the loads to reduce their setpoints, thus consuming lessenergy. If the critical locking signal exceeds a defined value, the boiler pump will bedeactivated also.If the boiler temperature returns to a level above the minimum limit, the integral will bereduced, resulting in a reduction of the critical locking signal. If the integral falls below adefined level, the circulating pump will be activated again if it had been switched off.The connencted loads rise their setpoint values.When the integral reaches the value of zero, protective boiler start-up will bedeactivated, in which case the critical locking signal is zero.If the boiler effects protective boiler start-up, the boiler temperature controller's displayshows .Protective boiler start-up cannot be deactivated.Section "16.4.5 Locking signal gain” provides information on who receives the boilertemperature controller's critical locking signal and how the loads respond to it.

Controller 1Plant type 5-1

24

77

B0

2e

Controller 1 generates acritical locking signalinternally


Controller 2

Critical locking signal

LPB

24

77

B0

3e


Controller 3

Controller 1 generatesinternally a criticallocking signal

12.4.5 Protection against boiler overtemperatures

To prevent heat from building up in the boilers (protection against overtemperatures),the controller offers a protective function.When the first burner stage is switched off, the controller allows pump M1 to overrun forthe set pump overrun time (operating line 174 on the boiler temperature controller),generating at the same time a forced signal to all loads (inside the controller on thedata bus). If the boiler temperature controller is located in segment 0, the forced signalwill be delivered to all loads in all segments. By contrast, if the boiler temperaturecontroller is located in segment 1...14, the signal will only be sent to the loads in thesame segment.All loads (heating and d.h.w. circuits) and heat exchangers that abruptly reduce theirdemand for heat watch the data bus during the set pump overrun time to see if a forcedsignal is being sent by the boiler.• If no forced signal is received, the loads and the heat exchanger only allow pump

overrun to take place (refer to section "16.4.2 Pump overrun")

Autonomous unit

Interconnected plant

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• If, in this time window, a forced signal is received, the loads continue to draw heatfrom the boiler in the following manner:− Plant types with heating circuits using a mixing valve maintain the previous

setpoint− Plant types with pump heating circuits allow the pumps to continue running

t

2522

D13

Kesselregler, Stufe 1

Zwangssignal

Nachlaufzeit desKesselreglers

Pumpe

Aus

Y

t TimeY Control signal boiler pump

If the boiler sets the forced signal to zero, the loads and heat exchanges that haveresponded to the forced signal respond as follows:• They close their mixing valves• Their pumps run for the set pump overrun time and then stopD.h.w. discharging protection has priority over protection against boilerovertemperatures.

12.5 Operating mode of pump M1

The operating mode during protective boiler start-up of pump M1 must be selected onoperating line 99:• Circulating pump with no deactivation (setting 0):

The circulating pump runs when one of the consumers calls for heat and whenburner stage 1 is switched on, that is, also during protective boiler start-up

• Circulating pump with deactivation (setting 1):The circulating pump runs when one of the consumers calls for heat. It is deactivatedduring protective boiler start-up

49/92

Siemens Building Technologies Basic documentation RVP330, RVP331 CE1P2377enLandis & Staefa Division Function block "Setpoint of return temperature limitation" 14.11.2000

13 Function block "Setpoint of returntemperature limitation"

On the function block "Setpoint of return temperature limitation”, the setpoint ofminimum limitation of the return temperature or the constant value for shifting maximumlimitation of the return temperature can be adjusted.

13.1 Operating line



101 Setpoint of the return temperature limitation °C --- --- / 0...140 –

13.2 Description

The setpoint of the minimum return temperature limitation can be set on operating line101.When entering ---, the function is deactivated, which means that the return temperaturewill not be limited.

13.3 Minimum limitation of the return temperature

This function block ensures minimum limitation of the boiler return temperature whererequired. This applies to the following plant types:• Plant type no. 4–x, "Space heating with mixing valve"• Plant types no. 5–x and 6–x, "Space heating with mixing valve and pre-control with

boiler”Minimum limitation of the return temperature prevents boiler corrosion due to flue gascondensation.

13.3.1 Acquisition of measured values

A temperature sensor with a sensing element Landis & Staefa Ni 1000 Ω at 0 °C isrequired in the return. With plant type no. 4–x, the return temperature can also bedelivered via LPB. In interconnected plants, only one return temperature sensor persegment may be used.


If the return temperature falls below the set minimum limit value, the temperaturedifferential between minimum limit value and actual value will be integrated. From this,a critical locking signal will be generated and transmitted to the connected loads. Thiscauses the loads to reduce their setpoints, thus consuming less energy.If the return temperature returns to a level above the minimum limit, the integral will bereduced, resulting in a reduction of the critical locking signal. The connencted loads risetheir setpoint values.When the integral reaches the value of zero, the minimum return temperature limitationwill be deactivated, in which case the critical locking signal is zero.If minimum limitation of the return temperature is active, the display shows .Minimum limitation of the return temperature can be deactivated.Section "16.4.5 Locking signal gain” provides information on where the critical lockingsignal is sent and how the loads respond to it.

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Siemens Building Technologies Basic documentation RVP330, RVP331 CE1P2377enLandis & Staefa Division Function block "Setpoint of return temperature limitation" 14.11.2000

The minimum limit value is to be set on operating line 101. Setting --- = (inactive)

13.3.3 Mode of operation with a single device (with no bus)

24

77

B0

6e

Controller 1Boiler controller


Controller 2 generates a criticallocking signal which shuts theheating circuit mixing valve anddeactivates the charging pump

With no possibility ofminimum returntemperature limitation

Operating line 101 = 50 °CReturn temperature sensorconnected

13.3.4 Mode of operation in interconnected plants

Controller 1Plant type no. 5-0




Controller 2 shuts theheating circuit mixingvalve

Controller 3 shuts the heatingcircuit mixing valve and deacti-vates the d.h.w. charging pump

LPB

2477

B04

e

Setting operatingline101 = 50 °C,return temperaturedetector connected.Controller 1 shuts theheating circuit mixingvalve

Setting operating line 101 = - - - , no ownreturn temperature detector connected

Setting operating line 101 = - - - , no ownreturn temperature detector connectedCritical locking signal

Controller 1Boiler controller



Return temperature signal

Controller 2 limits thereturn temperatureto 50 °C min.

LPB

2477

B05

e

Setting operating line 101 = 50 °C,return temperature sensor connected

Setting operating line 101 = 40 °C, on ownreturn temperature sensor connected

(With no possibility ofminimum limitation ofreturn temperature)

Controller 3 limits thereturn temperatureto 40 °C min.

The zone controller with its own return temperature sensor (plant type no. 4–x) passesthe return temperature to the other zone controllers in the same segment, which canprovide minimum limitation of the return temperature on a local basis, depending on thesettings made. This means they generate a critical locking signal internally.(For response to critical locking signals, refer to section "16.4.5 Locking signal gain”).

Variant 1 – central actionof limitation

Variant 2 – local actionof limitation

51/92

Siemens Building Technologies Basic documentation RVP330, RVP331 CE1P2377enLandis & Staefa Division Function block "D.h.w." 14.11.2000

14 Function block "D.h.w."Function block ”D.h.w.” is used for the input of all d.h.w relevant settings.




121* Assignment of d.h.w. heating 0 0...2 –

123 Release of d.h.w. heating 2 0...2 –

124 D.h.w. priority, flow temperature setpoint 0 0...4 –

126 D.h.w. sensor / d.h.w. thermostat 0 0 / 1 –

127 D.h.w. charging temperature boost °C 10 0...50 –

128 Switching differential d.h.w. °C 8 1...20 –

129 Maximum d.h.w. charging time min 60 --- / 5...250 –

130 Setpoint of the legionella function °C --- --- / 20...100 –

131 Forced charging 0 0 / 1 –

* Operating line 121 is only available with the RVP330

14.2 Assignment of d.h.w. heating

Operating line 121 is used to select for which heating circuits the d.h.w. is heated, thatis, which heating circuits draw their water from the same source.

Operating line 121 Explanation

0 D.h.w. heating is only provided for the heating circuit associatedwith the own controller

1 D.h.w. heating is only provided for the heating circuits of thecontrollers with the same segment number that are connectedto the data bus (LPB)

2 D.h.w. heating is provided for all heating circuits of the controllersconnected to the data bus (LPB)

The setting is required in connection with operating lines 141 (circulating pumpprogram) and 123 (release of d.h.w. heating).

14.3 Program for the circulating pump

Refer to section "15.2.4 Circulating pump”.

14.4 Frost protection for d.h.w.

Frost protection for the controller’s d.h.w storage tank is ensured by sensor B31.This type of frost protection always ensures a minimum switch-on temperature of 5 °C.If the temperature measured with sensor B31 falls below 5 °C, storage tank chargingwill immediately be started (independent of other settings), which generates a heatrequisition to the pre-controller. The switch-off temperature is at 5 °C plus the switchingdifferential (set on operating line 128).

When using a thermostat, there is no frost protection for the d.h.w. storage tank.Caution!

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14.5 Release of d.h.w. heating14.5.1 Function

On operating line 123, it is possible to select at what times d.h.w. heating is to bereleased. Released means: the storage tank will be recharged as neededThis function allows d.h.w. heating to be suppressed during non-occupancy times (e.g.at night or during holiday periods).If d.h.w. heating in the summer takes place alternately with an electric immersionheater, the latter will be released continuously – independent of the setting made onoperating line 123 – that is, 24 hours a day.

25

24

B0

4e

Release according tooperating line 123

Release 24 h1 2

3

4

5

Mechanism of d.h.w. heating release1 D.h.w. button2 Type of heating (hot water / electric immersion heater)3 D.h.w. heating with hot water4 D.h.w. heating with electric immersion heater5 D.h.w. heating

14.5.2 Release programs

Depending on the setting made on operating line 123, release of d.h.w. heating takesplace at the following times:

Setting D.h.w. heating is released

0 continuously (24 hours a day)

1 according to one or several heating programs

2 according to switching program 2 of own controller

With setting 1, d.h.w release depends on the setting made on operating line 121. In aninterconnected system of several controllers, that is, in the case of several heatingprograms, the circulating pump runs if at least one of the connected controllersprovides heating to the NORMAL temperature according to its heating program(independent of the operating mode), and is not in holiday mode.Release of d.h.w. heating is shifted forward in time by one hour against the times of theheating program. If optimum start control is active, the optimized switch-on times areused - and not the times entered.The release of d.h.w. heating is explained using two examples, in which controllers Aand B are interconnected via data bus:

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Operatingline 121

Operatingline 123

Controller(heatingcircuit)

Operatingmode

Heating program,optimization, holidays

Release

A (HK1) 06:00...18:00, nooptimization

A (HK2) 07:00...23:00

B (HK1) 07:00...22:00, optimumstart control shiftsforward by 2 hours

2 1

B (HK2) 03:00...22:00,HOLIDAYS

D.h.w. heatingis released from04:00 to 23:00

Operatingline 121

Operatingline 123

Controller(heatingcircuit

Operatingmode

Heating program,optimization, holidays

Release

A (HK1) 06:00...18:00, nooptimization

A (HK2) 08:00...23:00

B (HK1) 07:00...22:00, optimumstart control shiftsforward by 2 hours

2 1

B (HK2) 05:00...21:00

D.h.w. heatingis releasedfrom 04:00 to23:00

14.5.3 D.h.w heating during the holiday period

In holiday mode, d.h.w. heating is provided as follows:

Operating line 121 Operating line 123 D.h.w. heating

0 0, 1, or 2 No d.h.w. heating when own controller is inholiday mode

1 0, 1, or 2 No d.h.w. heating when all controllers in thesame segment are in holiday mode

2 0, 1, or 2 No d.h.w. heating when all controllers in theinterconnected system are in holiday mode

14.6 Priority and flow temperature setpoint14.6.1 Settings

Operating line 124 D.h.w. priority Flow temperature setpoint according to

0 Absolute D.h.w.

1 Shifting D.h.w.

2 Shifting Maximum selection

3 None (parallel) D.h.w.

4 None (parallel) Maximum selection

14.6.2 D.h.w. priority

Depending on the capacity of the heat generating equipment, it may be practical toreduce the amount of heat drawn by the heating circuit(s) during d.h.w. heating, thusensuring that the required d.h.w. temperature will be reached more quickly. This meansthat d.h.w. heating is given priority over space heating.

Example 1

Example 2

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For this purpose, the controller offers three kinds of d.h.w. priority:• Absolute priority• Shifting priority• No priority (parallel operation)The priority is provided by delivering locking signals. The action of the locking signals isdescribed in section "16.4.5 Locking signal gain”.

14.6.3 Absolute priority

During d.h.w. charging, the heating circuits are locked, that is, they receive no heat.• Controller with no bus connection:

During d.h.w. heating, the controller sends an uncritical locking signal of 100 % to itsown heating circuit

• Controller with bus connection:During d.h.w. charging, the controller signals the "Consumer master" that it presentlyprovides d.h.w. charging with absolute priority. The consumer master is the unit withthe same segment number as the controller with device number 1. The consumermaster then sends an uncritical locking signal of 100 % to all controllers in the samesegment. If the consumer master is in segment 0, the uncritical locking signal will bedelivered to all controllers in all segments

14.6.4 Shifting priority

During d.h.w. charging, the heating circuits will be throttled if the heat generatingequipment (the boiler) is not able to maintain the required setpoint. In that case, thedisplay of the boiler controller shows• Controller with no bus connection:

If, during d.h.w. charging with shifting priority, the boiler is not able to maintain thesetpoint, the differential between setpoint and actual value will be integrated and anintegral-dependent uncritical locking signal in the range 0…100 % delivered to theown heating circuit.Since shifting priority is determined by the boiler, this kind of priority is only possiblewith plant types no. 5–x and 6–x. With plant type no. 4–x, the setting "Shiftingpriority" acts the same way as the setting "No priority".

• Controller with bus connection:During d.h.w. heating, the controller signals the heat source in the same segment(controller and heat source could be identical) that it presently provides d.h.w.heating with shifting priority. If, now, the boiler is not able to maintain its setpoint, thedifferential between setpoint and actual value will be integrated and an integral-dependent uncritical locking signal in the range 0…100 % generated. If the heatsource is located in segment 0, it delivers the signal to all controllers in all segments.If the heat generating equipment is in segment 1…14, it only sends the signals to thecontrollers in the same segment

14.6.5 No priority

No priority means parallel operation. D.h.w. charging has no impact on the heatingcircuits.

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14.6.6 Flow temperature setpoint

With the kinds of priority "Shifting priority" and "No priority", the temperature setpoint ofthe common flow, which is used for both d.h.w. charging and space heating, can begenerated in two different ways:• Flow temperature setpoint according to the maximum selection• Flow temperature setpoint according to the d.h.w. demandWith plant type no. 4–x, the temperature setpoint of the common flow is transmitted tothe pre-controller via data bus.With plant types no. 5–x and 6–x, the temperature setpoint of the common flow is validfor sensor B2.

14.6.7 Maximum selection

In the case of d.h.w. heating, the temperature setpoint of the common flow for the d.h.w.and the heating circuit is generated from the two demands by maximum selection.

It is assumed that the mixing heating circuit calls for 40 °C, the d.h.w. circuit for 65 °C.With d.h.w. charging, the setpoint of the common flow temperature will then be thehigher of the 2, namely 65 °C.

14.6.8 D.h.w.

With d.h.w. heating, the temperature setpoint of the common flow for the d.h.w. and theheating circuit is that required for the d.h.w. circuit.

It is assumed that the mixing heating circuit calls for 80 °C, the d.h.w. circuit for 65 °C.With d.h.w. charging, the setpoint of the common flow temperature will then be that ofthe d.h.w. circuit, namely 65 °C.

14.7 Type of d.h.w. charging

Refer to chapter "15 Function block "Multi-functional relay" ".

14.8 D.h.w. temperature and d.h.w. switchingdifferential

The kind of d.h.w. storage tank temperature acquisition must be entered on operatingline 126. It can be measured with a sensor or with a thermostat.If a temperature sensor is used, the switch-on / off temperature for charging isdetermined as follows:

TBWx

2524

D02

ON

OFF

SDBW

TOFF = TBWwTON

ON D.h.w. charging ON TOFF Switch-off temperatureOFF D.h.w charging OFF TBWw D.h.w temperature setpointSDBW Switching differential of d.h.w. charging TBWx D.h.w. temperatureTON Switch-on temperature

Example

Example

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If the d.h.w. storage tank is equipped with a thermostat, the thermostat determines theswitch-on / off temperature.

Determination of the switch-on temperature (start of d.h.w. charging):

Operating line 126 Measurement Switching criterion

0 Sensor TBWx < (TBWw – SDBW)

1 Control thermostat Thermostat contact B31 closed

Determination of the switch-off temperature (end of d.h.w. charging):

Operating line 126 Measurement Switching criterion

0 Sensor TBWx > TBWw

1 Control thermostat Thermostat contact B31 open

SDBW D.h.w. switching differential (operating line 128)TBWw Setpoint of d.h.w. temperature (operating line 26)TBWx Measured value storage tank sensor (B31)

14.9 Boost of the d.h.w. charging temperature

The boost of the d.h.w. charging temperature in °C can be set on operating line 127.The boost refers to the setpoint of the d.h.w. temperature.The lower the setting of this value, the longer d.h.w. charging takes.

TLw [°C] = TBWw + TBW∆

Setpoint of d.h.w. temperature (TBWw, operating line 26) = 50 °CBoost of the d.h.w. charging temperature (TBW∆, operating line 127) = 10 °C

Resulting setpoint of the charging temperature TLw = 60 °C

If a thermostat is used, the boost of the d.h.w. charging temperature must still be set.

14.10 Maximum d.h.w. charging time

The maximum charging time for d.h.w. storage tanks can be set on operating line 129.This function is always active, independent of the kind of d.h.w. priority (absolute,shifting, or parallel).As soon as d.h.w. charging starts, a counter records the charging time. If charging isterminated before the set maximum charging time has expired, the counter will be setto zero. A new charging cycle can commence at any time.However, if charging takes longer than the set maximum time, charging will be stoppedand than locked for the same period of time. Then, charging will be resumed either untilthe setpoint is reached or maximum limitation terminates the charging time again.This function can be deactivated, in which case the charging time will not be limited.

Example:

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BWL

t

2524

D03

ON

OFF

t

TBWw

TBW

TBWw - SDBW

tLmax tLmax

D.h.w. charging locked tLmax Maximum charging timeBWL d.h.w. charging TBW D.h.w. temperatureON D.h.w. charging ON TBWw D.h.w temperature setpointOFF D.h.w charging OFF SDBW Switching differential d.h.w.t Time

14.11 Legionella function

On operating line 130, the setpoint of the legionella function can be adjusted or thefunction deactivated. This function raises the d.h.w. temperature once a week, thusmaking certain that legionella viruses will be killed.When the function is activated, the d.h.w. temperature is raised to the adjustedlegionella setpoint every Monday when d.h.w. charging is released for the first time. It isalso active if a maximum charging time is set. If the legionella setpoint is not reached,the legionella function is interrupted and resumed at the end of the maximum chargingtime.Preconditions for the legionella function:• D.h.w. heating is switched on (button lit)• The d.h.w. storage tank temperature is measured with a sensor. (The legionella

function cannot be provided when using a thermostat)• Charging takes place instantaneously with the heating water and not with the electric

immersion heater

14.12 Forced charging

On operating line 131, it is possible to select whether or not forced charging of thed.h.w. storage tank shall take place daily when d.h.w. heating is released for the firsttime.With forced charging, the d.h.w. storage tank is charged also when the d.h.w.temperature lies between the switch-on and the switch-off temperature. The switch-offpoint remains the same.If d.h.w. heating is released 24 hours a day, forced charging takes place very day atmidnight.

14.13 Protection against discharging14.13.1 Purpose

With plant types using a d.h.w. storage tank, protection against discharging is ensuredduring overrun of the d.h.w. charging pump. This function makes certain that the d.h.w.will not be cooled down again during pump overrun .

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If the flow temperature is lower than the d.h.w. storage tank temperature, pump overrunwill be terminated prematurely.Depending on the type of plant, the flow temperature is acquired with sensor B2 orobtained from the data bus (LPB) as the common flow temperature.

If the flow temperature is lower than the d.h.w. setpoint temperature, pump overrun willbe terminated prematurely.Depending on the type of plant, the flow temperature is acquired with sensor B2 orobtained from the data bus (LPB) as the common flow temperature.

The flow temperature is ascertained as follows, depending on the type of plant and thebus connection:

Plant type no. Controller with no bus (LPB) Controller with bus (LPB)

4–1 No protection againstdischarging

Common flow temperature from databus (if present), otherwise no protectionagainst discharging

6–x Sensor B2 Sensor B2

14.14 Manual d.h.w. charging

D.h.w. charging can be initiated manually by pressing the d.h.w. button for fiveseconds. As a confirmation, the button will flash for five seconds.Manual d.h.w. charging is active also when• d.h.w. heating is not released• the d.h.w. temperature lies inside the switching differential• d.h.w. heating is switched off• d.h.w. heating is switched off due to holiday mode• d.h.w. heating is locked because the maximum charging time has been exceededManually initiated charging of the d.h.w. storage tank is stopped only if the d.h.w.temperature setpoint is reached or if the maximum charging time is exceeded.After manual charging, d.h.w. heating always remains switched on, irrespective ofwhether or not it was switched on before the manual charging.If d.h.w. heating shall be switched off again after the manual charging, the button mustbe pressed again after flashing (button extinguishes).

If the d.h.w. is heated with an electric immersion heater, manual charging is notpossible.

With storage tanksensor

With thermostat

Flow temperature

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Siemens Building Technologies Basic documentation RVP330, RVP331 CE1P2377enLandis & Staefa Division Function block "Multi-functional relay" 14.11.2000

15 Function block "Multi-functionalrelay"

The RVP33... features a multi-functional relay whose function is selected on this block.This relay is also used for controlling the circulating pump or an electric immersionheater for d.h.w. heating.




Plant type no. x–0: 0...2

Plant types no. x–1, RVP330: 0...8

141 Function of multi-functional relay 0

Plant types no. x–1, RVP331: 0...6

–

15.2 Functions

The following functions can be assigned to the multi-functional relay:

Operating line 141 Function

0 No function

1 Relay energized in the event of fault

2 Relay energized, if there is demand for heat

3 Circulating pump continuously ON (24 hours a day)

4 Circulating pump ON after heating programs(with the RVP330, depending on the setting made on operatingline 121)

5 Circulating pump ON according to switching program 2

6 Changeover electric immersion heater / heating circuit accordingto own controller

7 Changeover electric immersion heater / heating circuit accordingto all controllers with the same segment number in theinterconnected system

8 Changeover electric immersion heater / heating circuit accordingto all controllers in the interconnected system

With plant types without d.h.w. (x–0), the only possible settings are 0...2.

15.2.1 No function

No function is assigned to the multi-functional relay.

15.2.2 Relay energized in the event of fault

If, at the cpntroller, a fault status message is present, either from the controller itself orfrom the data bus (LCD displays Er), the multi-functional relay will be energized.Switching on takes place with a delay of two minutes. When the fault is corrected, thatis, when the fault status is no longer present, the relay will be de-energized with nodelay.

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15.2.3 Relay energized, if there is demand for heat

If the own heating circuit or the d.h.w. circuit calls for heat, the multi-functional relay willbe energized.In interconnected plants, the relay is energized when the controller receives a demandfor heat.

15.2.4 Circulating pump

On operating line 141, it is possible to enter according to which time program the d.h.w.circulating program shall run. The use of a circulating pump is optional with all types ofplant.The circulating pump runs only when d.h.w. heating is switched on (button is lit).The circulating pump runs at the following times, depending on the setting made onoperating line 141:

Operating line 141 The circulating pump runs

3 continuously (24 hours a day)

4 according to own or several heating programs

5 according to switching program 2 of own controller

With setting 4, operation of the circulating pump depends on the setting made onoperating line 121. In an interconnected plant with several controllers, that is, withseveral heating programs, the circulating pump runs when at least one of thecontrollers provides heating to the NORMAL temperature according to its heatingprogram (independent of the operating mode) and is not in holiday mode.The circulating pump runs with a forward shift against the times of the heating program.This means it is affected by optimum start control.2 examples are given below to show the behaviour of the circulating pump whencontrollers A and B are interconnected via data bus:

Operatingline 121

Operatingline 141


Operatingmode

Heating program,holidays

Circulatingpump

A (HK1) 06:00...18:00

A (HK2) 03:00...22:00,HOLIDAYS

B (HK1) 07:00...22:00

2 4

B (HK2) 07:00...23:00

Thecirculatingpump runsfrom 06:00 to23:00

Operatingline 121

Operatingline 141


Operatingmode

Heating program,holidays

Circulatingpump

A (HK1) 06:00:00..0.18:00,optimum start controlshifts forward by2 hours

A (HK2) 05:00...21:00

B (HK1) 07:00...22:00

2 4

B(HK2) 08:00...23:00

Thecirculatingpump runsfrom 4:00 to23:00

General mode ofoperation

Example 1

Example 2

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During the holiday period, the circulating pump runs according to the setting made, asshown in the following table:

Operatingline 121

Operatingline 141

Operation of circulating pump

0 3, 4, or 5 Circulating pump OFF, if own controller in holiday mode

1 3, 4, or 5 Circulating pump OFF, if all controllers having the samesegment number are in holiday mode

2 3, 4, or 5 Circulating pump OFF, if all controllers in the interconnectedsystem are in holiday mode

15.2.5 Type of d.h.w. charging

The type of d.h.w. charging is to be entered on operating line 141. There are 2 basicchoices:• D.h.w. charging with hot water• D.h.w. charging alternately with hot water and the electric immersion heater

The setting on operating line 141 is 0...5.The d.h.w. storage tank is charged exclusively with hot water throughout the year.

The setting on operating line 141 is 6, 7, or 8.In the winter, the d.h.w. storage tank is charged with hot water from the heating systemand, in the summer, with the electric immersion heater.Changeover takes place based on the following criteria:• Changeover from hot water charging to the electric immersion heater takes place if

there has been no demand for space heating for at least 48 hours (changeover atmidnight)

• Changeover from the electric immersion heater to hot water charging is effectedwhen there is a demand for space heating. Depending on the setting made onoperating line 141 (6, 7, or 8), different types of heat demand are considered for thechangeover criterion:

Operating line 141 Criterion for changeover

6 Demand for space heating from own heating circuit

7 Demand for space heating from all controllers connected tothe data bus (LPB), having the same segment number,including those from the own heating circuit

8 Demand for space heating from all controllers connected tothe data bus (LPB), including those from the own heatingcircuit

Operation of circulatingpump during the holidayperiod

D.h.w. charging with hotwater

Alternate d.h.w.charging with hot waterand electricity

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Siemens Building Technologies Basic documentation RVP330, RVP331 CE1P2377enLandis & Staefa Division Function block "Service functions and general settings" 14.11.2000

16 Function block "Service functionsand general settings"

Function block "Service functions and general settings" is used to combine variousdisplays and setting functions that are of assistance in connection with commissioningand service work. In addition, a number of extra functions are performed.The service functions are independent of the type of plant.




161 Outside temperature simulation °C --.- --.- / −50...+50 –

162 Relay test 0 0...9 –

163 Sensor test Display function –

164 Setpoint or limit values Display function –

167 Outside temperature for frost protectionfor the plant

°C 2.0 --.- / 0...25 –

168 Flow temperature setpoint for frostprotection for the plant

°C 15 0...140 –

169* Device number 0 0...16 –

170* Segment number 0 0...14 –

173 Gain of locking signal % 100 0...200 –

174 Pump overrun time min 6 0...40 –

175 Pump kick 0 0 / 1 –

176 Winter- / summertime changeover dd:MM 25.03 01.01. ... 31.12 –

177 Summer- / wintertime changeover dd:MM 25.10 01.01. ... 31.12 –

178* Clock mode 0 0...3 –

179* Bus power supply A 0 / A –

180* Outside temperature source A A / 00.01... 14.16 –

194 Hours run counter Display function –

195 Controller's software version Display function –

* These operating lines are only available with the RVP330

16.2 Display functions16.2.1 Hours run counter

The number of controller operating hours is displayed. Whenever operating voltage ispresent, the controller counts the hours.The maximum reading is limited to 500,000 hours (57 years).

16.2.2 Software version

The controller displays the software version in use.

16.3 Commissioning aids16.3.1 Simulation of the outside temperature

To facilitate commissioning and fault tracing, outside temperatures in the range −50 to+50 °C can be simulated. This simulation has an effect on the actual, the compositeand the attenuated outside temperature.

Simulated TA = actual TA = composite TA = attenuated TA

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During the temperature simulation, the actual outside temperature (as acquired by thesensor or via LPB) will be overridden.When the simulation is terminated, the actual outside temperature will graduallyreadjust the composite and the attenuated temperatures to their correct values. Thesimulation of the outside temperature causes therefore a reset of the attenuated andthe composite outside temperatures.There are 3 choices to terminate the simulation:• Entry of --.-• Leaving the setting level by pressing any of the operating mode buttons• Automatically after 30 minutes

16.3.2 Relay test

The 11 output relays can be individually energized. The following coding applies:

Input Relay test Connection terminals

0 Normal operation –

1 All contacts open –

2 Burner stage 1 ON K4

3 Burner stages 1 and 2 ON K4 and K5

4 Circulating pump ON M1

5 Charging pump ON M3

6 Heating circuit mixing valve heating circuit 1 OPENING Y1

7 Heating circuit mixing valve heating circuit 1 CLOSING Y2

8 Heating circuit pump heating circuit 1 ON M2

9 Multi-functional relay energized K6

10 Heating circuit mixing valve heating circuit 2 OPENING Y7

11 Heating circuit mixing valve heating circuit 2 CLOSING Y8

12 Heating circuit pump heating circuit 2 ON M5

There are 4 choices to terminate the relay test:• Entry of 0 on the operating line• Leaving the setting level by pressing button or• Leaving the setting level by pressing any of the operating mode buttons• Automatically after 30 minutes

16.3.3 Sensor test

The connected sensors can be checked on operating line 163. In addition, if available,the current setpoints and limit values are displayed on operating line 164.The 9 temperatures can be called up by entering 0..0.9:

Input Operating line 163 Operating line 164

0 Actual value of outside sensor atterminal B9.If the outside temperature is deliveredvia the data bus, the display shows ---

No display

1 Actual value of flow temperaturesensor heating circuit 1 at terminal B1

Flow temperature setpoint heatingcircuit 1. If there is no demand forheat, the display shows ---

2 Actual value of room sensor heatingcircuit 1 at terminal B5

Room temperature setpointheating circuit 1

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3 Actual value of room unit sensorheating circuit 1 at terminal A6

Room temperature setpoint heatingcircuit 1.

4 Actual value of return sensor atterminal B7.If the return temperature is deliveredvia data bus, the display shows ---

Limit value return temperatureIf no return temperature limitationis used, the display shows ---

5 Actual value of storage tank sensor /thermostat at terminal B31

Setpoint of d.h.w. temperature

6 Actual value of boiler sensor atterminal B2

Boiler temperature setpoint(switch-off point).If there is no demand for heat, thedisplay shows ---

7 Actual value of flow sensor heatingcircuit 2 at terminal B12

Flow temperature setpoint heatingcircuit 2. If there is no demand forheat, the display shows ---

8 Actual value of room sensor heatingcircuit 2 at terminal B52


9 Actual value of room unit sensorheating circuit 2 at terminal A6


Faults in the measuring circuits are displayed as follows:= short-circuit (thermostat: contact closed)

– – – = open-circuit (thermostat: contact open)When changing from operating line 163 to 164, and vice versa, the selected sensor(setting 1...9) will be maintained.

16.4 Auxiliary functions16.4.1 Frost protection for the plant

The plant can be protected against frost. For this purpose the controller and the heatgenerating equipment must be ready to operate (mains voltage present!).The following settings are required:• The outside temperature at which frost protection shall respond• The minimum flow temperature that shall be maintained by the frost protection

function

TA

2524

D04

ON

OFF

0,5 °C

BZ 167

0,5 °C

BZ167TA

OFFON

Operating line 167Outside temperatureFrost protection OFFFrost protection ON

If the outside temperature falls below the limit value (setting on operating line 167minus 0.5 °C), the controller will switch the heating circuit pump M2 on and maintain theflow temperature at the adjusted minimum level.A respective heat demand is sent to the heat generating equipment.The control is switched off when the outside temperature exceeds the limit value by0.5 °C.Frost protection for the plant can be deactivated.

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16.4.2 Pump overrun

To prevent heat from building up, a common pump overrun time can be set for allpumps associated with the controller (with the exception of the circulating pump) onoperating line 174. In that case the pumps overrun for the set period of time.D.h.w. discharging protection has priority over pump overrun.In interconnected plants, the time set also affects the forced signals that a boiler candeliver to ensure overtemperature protection.For detailed information, refer to section "12.4.5 Protection against boilerovertemperatures”.

16.4.3 Pump kick

To prevent pump seizing during longer off periods (e.g. in the summer), it is possible toactivate periodic pump runs: The input is either 0 or 1:0 = no periodic pump kick1 = periodic pump kick activatedIf the pump kick is activated, all pumps run for 30 seconds, one after the other, everyFriday morning at 10:00, independent of all other functions and settings.

16.4.4 Winter- / summertime changeover

The change from wintertime to summertime, and vice versa, is made automatically. Ifinternational regulations change, the dates need to be reentered. The entry to be madeis the earliest possible changeover date. The weekday on which changeover occurs isalways a Sunday.

If the start of summertime is given as "The last Sunday of March", the earliest possiblechangeover date is March 25. The date to be entered on operating line 176 is then25.03.If no summer- / wintertime changeover is required, the two dates are to be set such thatthey coincide.

16.4.5 Locking signal gain

The functions "Maintained boiler return temperature", "Protective boiler start-up" and"D.h.w. priority" use locking signals that are sent to the heat exchangers and loads.With the heat exchanger and load controllers, it is possible to set on operating line 173(Amplification of locking signal) to what degree they shall respond to a locking signal.This gain of the locking signal is adjustable from 0 % to 200 %.

Setting Response

0 % Locking signal will be ignored

100 % Locking signal will be adopted 1:1

200 % Locking signal will be doubled

There are 2 types of locking signals:• Uncritical locking signals• Critical locking signalsThe response of the loads depends on the kind of load.

Uncritical locking signals are generated in connection with the d.h.w. priority (absoluteand shifting) and only act on the heating circuits.The response of the heating circuit depends on the type of heating circuit:

Example

Fundamentals

Uncritical lockingsignals

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• Heating circuit with mixing valve:In the heating circuit, the flow temperature setpoint will be reduced as a function ofthe set locking signal gain. The mixing valve closes; the heating circuit pumpcontinues to run.

• Heating circuit with pump:In case of a defined value of the uncritical locking signal, the heating circuit pump willbe deactivated, independent of the set locking signal gain. In plants with changeovervalve, the valve assumes the "D.h.w." position

Critical locking signals are generated by the boiler temperature controller duringprotective boiler start-up and during minimum limitation of the boiler return temperature.If the boiler temperature controller is located in segment 0, the critical locking signal willbe sent to all loads and heat exchangers in the bus network and – if present – to itsown heating and d.h.w. circuit. If the boiler temperature controller is in segment 1…14,it will deliver the critical locking signal only to all loads in the same segment and – ifpresent – to its own heating and d.h.w. circuit.Minimum limitation of the return temperature can also be provided locally by a controllerwith plant type no. 4–x. In that case, the critical locking signal only acts inside thecontroller and is only delivered to the own heating circuits and the d.h.w. circuit.With regard to the response of the consumers and heat exchangers, there are 2choices:• Heat converters and consumers with mixing valves:

The flow temperature setpoint will be reduced as a function of the set locking signalgain. Heat exchangers and loads close their mixing valves; the heating circuit pumpcontinues to run

• Consumers with pump circuit:When a defined value of the critical locking signal is reached, the pump will bedeactivated, independent of the set locking signal gain

16.5 Entries for LPB16.5.1 Source of time of day:

Depending on the master clock, different sources for the time of day can be used. Thesource must be entered on the controller on operating line 178, as a digit (0…3):0 = autonomous clock in the controller1 = time of day from the bus; clock (slave) with no remote readjustment2 = time of day from the bus; clock (slave) with remote readjustment3 = time of day from the bus; central clock (master)The effect of the individual entries is as follows:

Input Effect Diagram

0 • The time of day on the controller can bereadjusted

• The controller's time of day is not matchedto the system time

Controller time System time

Adjustment

1 • The time of day on the controller cannot bereadjusted

• The controller's time of day is automaticallyand continually matched to the system time

System time

Adjustment

Controller time

2 • The time of day on the controller can bereadjusted and, at the same time, readjuststhe system time since the change is adoptedby the mastere

System time

Adjustment

Controller time

Critical locking signals

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• The controller's time of day is neverthelessautomatically and continually matched to thesystem tim

3 • The time of day on the controller can bereadjusted and, at the same time, readjuststhe system time

• The controller time is used as a pre-settingfor the system

2522

B12

e

System time

Adjustment

Controller time

In each system, only one controller may be used as a master. If several controllers areset as masters, a fault status signal will be delivered (error code 100).

16.5.2 Outside temperature source

If, in interconnected plants, the outside temperature is delivered via the bus, thetemperature source can be addressed either automatically or directly (operating line180).

Addressing Display, entry Explanation

Automatically A xx.yy Display A (for automatic addressing) and xx.yy(source address selected by automatic addressing):xx = segment numberyy = device number

Directly xx.yy To be entered is the source address

If the controller is operated autonomously (with no bus), there will be no display and noentry can be made.If the controller is used in an interconnected plant and if it has its own outside sensor, itis not possible to enter an address (if an entry is made, the display shows OFF). In thatcase, the controller always uses the outside temperature signal delivered by its ownsensor. The address displayed is its own.For detailed information about addressing the outside temperature source, refer to DataSheet CE1N2030E.

16.5.3 Addressing devices

Each device connected to the data bus (LPB) requires an address. This address iscomprised of a device number (1...16, operating line 169) and a segment number(0...14, operating line 170).In an interconnected plant, each address may be assigned only once. If this is notobserved, proper functioning of the entire plant cannot be ensured. In that case, a faultstatus signal will be generated (error code 82).If the controller is operated autonomously (with no bus), the device number must be setto zero.Since the device address is also associated with control processes, it is not possible touse all possible device addresses in all types of plant:

Plant type no. G = 0S = any(no bus)

G = 1S = 0

G = 1S = 1...14

G = 2...16S = any

4–x Permitted Permitted Permitted Permitted

5–x Permitted Permitted Permitted Not permitted

6–x Permitted Permitted Permitted Not permitted

G = device numberS = segment number

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If an inadmissible address has been entered, a fault status message will appear (errorcode 140).For detailed information about the addressing of devices, refer to Data SheetCE1N2030E.

16.5.4 Bus power supply

In interconnected plants with a maximum of 16 controllers, the bus power supply maybe decentralized, that is, power may be supplied via each connected device. If a plantcontains more than 16 devices, a central bus power supply is mandatory.On each connected device it is necessary to set whether the data bus is poweredcentrally or decentrally by the various controllers.With the RVP3..., this setting is made on operating line 179. The display shows thecurrent setting as SET and the current bus power supply status as actual.

Display Bus power supply

0 Bus power supply is central (no power supply via controller)

A Bus power supply is decentral via the controller

0 Presently no bus power supply available

1 Bus power supply presently available

The word BUS appears on the display only when a bus address is valid and bus powersupply is available. This means the display indicates whether or not data traffic via thedata bus is possible.

16.5.5 Bus loading number

The bus loading figure E for the LPB of the RVP330 is 10.The sum of all bus loading numbers E of the connected devices to the same bus maynot exceed the limit of 300.

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Siemens Building Technologies Basic documentation RVP330, RVP331 CE1P2377enLandis & Staefa Division Function block "Locking functions" 14.11.2000

17 Function block "Locking functions"On the software side, all settings can be locked to prevent tampering.

17.1 Operating line



198 Locking of settings 0 0 / 1 –

17.2 Locking settings

On operating line 198, the settings made on the controller can be locked on thesoftware side. This means that the settings made can still be called up on the controller,but cannot be changed.

The settings can be changed via the bus. The procedure is the following:1. Press buttons and together until appears in the display.2. Press buttons , , and , one after the other.3. Now, operating line 198 appears in the display. The following locking choices are

available:0 = no locking1 = all settings are locked

After locking all settings, the following setting elements remain operative:• The buttons for selecting the operating lines

No longer operative will be:• The buttons for the readjustment of values• The knobs for readjustment of the room temperatures• The operating mode buttons (only for leaving the setting level)• The manual mode button

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Siemens Building Technologies Basic documentation RVP330, RVP331 CE1P2377enLandis & Staefa Division Communication 14.11.2000

18 Communication18.1 Combination with room units18.1.1 General

• The room temperature acquired by a room unit is adopted by the controller atterminal A6. If the room temperature signal delivered by the room unit shall not beconsidered by the control functions, the respective source need to be selected(operating line 65). The other room unit functions will then be maintained

• The connection of an inadmissible room unit is detected by the RVP3... as a faultand displayed as such on operating line 50 (error code 62)

• Faults that the room unit detects in itself are displayed by the RVP3... on operatingline 50 (error code 61)

18.1.2 Combination with room unit QAW50 / QAW50.03

The QAW50 can act on the controller as follows:• Overriding the operating mode of the heating circuit• Readjustment of the room temperatureFor this purpose, the QAW50 has 3 operating elements:• Operating mode button• Economy button (also called presence button)• Knob for room temperature readjustmentsOn the QAW50.03, the following settings are required:• For heating circuit 1, address 1 (factory setting)• For heating circuit 2, address 2

From the QAW50, the operating mode of the controller can be overridden. This isaccomplished with the operating mode button and the economy button.To enable the room unit to act on the controller, the following operating conditions mustbe satisfied on the controller:• AUTO mode for the heating circuit• No holiday period active, no manual operationThe actions of the QAW50's operating mode slider on the controller are as follows:

Operating mode QAW50 Operating mode of heating circuit controller

; temporary overriding with economy buttonpossible

Continuously NORMAL or continuously REDUCEDheating, depending on the economy button

STANDBY

Using the knob of the QAW50, the room temperature setpoint of NORMAL heating canbe readjusted by ±3 °C.The adjustment of the room temperature setpoint on the controller's operating line 1 willnot be affected by the QAW50.

General

Overriding the heatingcircuit's operating mode

Knob for roomtemperaturereadjustments

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18.1.3 Combination with room unit QAW70

Using the QAW70, the following functions can be performed or the room unit can act onthe controller as follows:• Overriding the heating circuit's operating mode• Readjustment of room temperature setpoints• Readjustment d.h.w temperature setpoint• Readjustment of room temperature• Entry of weekday and time of day• Overriding the heating program• Display of the actual values acquired by the controller

For this purpose, the QAW70 has the following operating elements:• Operating mode button• Economy button (also called presence button)• Knob for room temperature readjustments• Buttons for selecting the operating lines• Buttons for changing the values

From the QAW70, the heating circuit’s operating mode of the controller can beoverridden. This is accomplished with the operating mode button and the economybutton.To enable the room unit to act on the controller, the following operating conditions mustbe satisfied on the controller:• AUTO mode for heating circuit• No holiday period active, no manual operation

The effect of the QAW70's operating mode button on the controller is as follows:

Operating mode QAW70 Operating mode of heating circuit controller

; temporary overriding with economy buttonpossible

Continuously NORMAL or continuously REDUCEDheating, depending on the economy button

STANDBY

With the knob of the QAW70, the room temperature setpoint of NORMAL heating canbe readjusted by ±3 °C.The adjustment of the room temperature setpoint on the controller's operating line 1 willnot be affected by the QAW70.

If the controller with a connected QAW70 is isolated from the mains network and thenreconnected, the following parameters on the QAW70 will be overwritten with thesettings made on the controller:• Time of day and weekday• Complete heating program• Room temperature setpoint of REDUCED heating• Room temperature setpoint of REDUCED heating• D.h.w temperature setpointThis means that the controller is always the data master.

Overriding the heatingcircuit's operating mode


Overriding the QAW70entries from thecontroller

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If 1 (slave with no remote operation) is entered on operating line 178 ("Source of time ofday") of the controller, the time of day on the QAW70 cannot be changed.

Operatingline of theQAW70:

Function, parameter Action on the controller, notes

1 Setpoint of NORMALheating

Changes operating line 1 on the controlle

2 Setpoint of REDUCEDheating

Changes operating line 2 on the controlle

3 D.h.w temperaturesetpoint

Changes operating line 26 on the controllerwith plant types with d.h.w. heating

4 Weekday (entry of heatingprogram)

Corresponds to operating line 4 on thecontroller

5 Third heating period, startof NORMAL heating

Changes operating line 5 on the controller

6 Third heating period, startof REDUCED heating










11 Entry of weekdays 1...7 Changes operating line 39 on the controller

12 Entry of time of day Changes operating line 38 on the controller

13 Display of d.h.w.temperature

Only with plant types with d.h.w. heating

14 Display of boilertemperature

(Only with plant types no. 5–x and 6–x)

15 Display of flowtemperature

16 Holidays Controller changes to STAND-BY

17 Reset to default values QAW70 default values are used

51 Bus address • For heating circuit 1, address 1 must beentered

• For heating circuit 2, address 2 must beentered

52 Identification of room unit

53 Operating lock on QAW70 No impact on the controller

55 Function of freelyprogrammable input

56 Mode of operation of thefreely programmable input

57 Effect of the parallel roomtemperature sensorQAW44 on the room unit

58 Type of setpoint display No impact on the controller

Actions of the individualQAW70 operating lineson the controller

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18.1.4 Combination with SYNERGYR central unit OZW30

Based on the room temperature of the individual apartments, the OZW30 central unit(software version 3.0 or higher) generates a load compensation signal. This signal ispassed on via the LPB to the controller where it produces an appropriate change of theflow temperature setpoint.On the central unit OZW30, the relevant heating circuit must be selected.

18.2 Communication with other devices

The RVP330 offers the following communication choices:• Signalling the heat demand of several RVP330 to the heat generating equipment• Exchange of locking and forced signals• Exchange of measured values such as outside temperature, return temperature and

flow temperature, as well as clock signals• Communication with other devices• Exchange of fault status messages

For detailed information about the communication via LPB, refer to the following piecesof documentation:• Data sheet CE1N2030E, Basic System Data• Data sheet CE1N2032E, Basic Engineering Data

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Siemens Building Technologies Basic documentation RVP330, RVP331 CE1P2377enLandis & Staefa Division Handling 14.11.2000

19 Handling19.1 Operation19.1.1 General

2477

Z01

10

BUS

1 8

2

3

4

513

6

9

Landis & StaefaRVP330

11

12

1 Buttons for selecting the operating mode (button pressed is lit)2 Service plug3 Buttons for operating the display:

Prog = selection of operating line– + = readjustment of displayed value

4 Operating Instructions5 Button for manual operation6 LED for manual operation7 Buttons for manual adjustment of valve8 Button for d.h.w. heating ON/OFF (ON = button lit)9 Status display (output, temperature levels, holidays)10 Display (LCD)11 Knob for room temperature readjustments heating circuit 112 Button for selecting the heating circuit13 Knob for room temperature readjustments heating circuit 2

Operating elements

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2477

Z03

ECO

1

3 4 65

BUS

2 1 2

1 Heating circuit-independent status displays:

Burner stage 1 ON

Burner stage 2 ON

Heating circuit pump ON

D.h.w. charging pump ON

Multi-functional relay energized

2 Heating circuit-independent status displays (heating circuit 1 or 2 depending on selection made):

Mixing valve opens

Mixing valve closes

Heating circuit pump ON

Holiday period active

Operational level NORMAL

Operational level REDUCED

3 Display of the current operating line number4 Display of:

BUS Bus power supply available

ECO ECO function active

Frost protection / holiday level active

5 Display of the current heating program6 Display of temperatures, times, etc.

The operating instructions are inserted in a holder at the rear of the cover. When intheir proper place, the list of operating lines that can be selected by the end-user isvisible.The operating instructions are designed for use by janitors and endusers. They alsocontain tips on energy savings and fault tracing.

19.1.2 Analog operating elements

For the selection of the operating mode, there are four buttons available. Each buttonhas an LED integrated; the currently active operating mode of the selected heatingcircuit is indicated by the respective LED.

A button is used to switch d.h.w. heating on and off. By pressing the respective button,d.h.w. heating is switched on or off. The button is lit when d.h.w. heating is switched on.Manual d.h.w. charging is also triggered by pressing the same button.

LCD and status display

Operating instructions

Buttons for selecting theheating circuit'soperating mode

D.h.w. button

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To make the heating circuit-specific settings or readings, this button must be pressed toselect the required heating circuit. The active heating circuit is indicated by an LED. Ifboth heating circuits are active, both LEDs are lit.

Each heating circuit has a knob for making manual room temperature readjustments.Its scale gives the room temperature change in °C. By turning the knob, the heatingcurve is displaced parallel.

Three buttons are used for manual operation:• One button for the activation of manual operation. An LED indicates manual

operation. Manual operation is quit by pressing the same button again or by pressingany at the operating mode buttons

• Two buttons for manual positioning commands.In plants using mixing valves, the regulating unit in the selected heating circuit canbe driven to any position by pressing the respective button.When pressing a button, the associated LED is lit

The positioning commands to the output relays are indicated on the LCD.

19.1.3 Digital operating elements

The entry and readjustment of all setting parameters, the activation of optionalfunctions and the reading of actual values and statuses are based on the operating lineprinciple. An operating line with an associated number is assigned to each parameter,each actual value and each optional function.The selection of an operating line and readjustment of the display is always made witha pair of buttons.

To select and readjust setting values, the procedure is the following:

Buttons Procedure Action

Line selection buttons Press button Selection of the next lower operating line

Press button Selection of the next higher operating line

Setting buttons Press button Decrease of the displayed value

Press button Increase of the displayed value

The value set will be adopted:• when selecting the next operating line• by pressing any of the operating mode buttonsIf the entry of --.- or --:-- is required, button or must be pressed until therequired display appears. Then, the display maintains --.- or --:--.

The operating lines are grouped as blocks. To reach a specific operating line of a blockquickly, the other blocks can be skipped, so that it will not be necessary to select all theother lines one by one. This is accomplished by using two combinations of buttons:

Procedure Action

Keep depressed and press Selection of the next higher function block

Keep depressed and press Selection of the next lower function block

Button for switchingbetween the heatingcircuits


Buttons and displays formanual operation

Display of positioningcommands

Operating line principle

Buttons

Block skip function

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The basic information about the plant is obtained by pressing setting buttons and. The numbers on the display have the following meaning:

Number Plant information

--- Time of day

0 Outside temperature

1 Flow temperature of heating circuit 1

2 Room temperature of heating circuit 1

3 D.h.w. temperature

4 Flow temperature of heating circuit 2

5 Room temperature of heating circuit 2

It is always the information selected last that is continuously displayed.

19.1.4 Setting levels and access rights

The operating lines are assigned to three different levels. Assignment and access areas follows:

Level Operating line Access

End-user 1 to 50 Press or together

Heating engineer 51 to 197 Press and for 3 seconds

Locking level 198 Press and together until

appears; then, press , , and

one after the other

• The end-user can access all analog operating elements. This means that he canselect the operating mode, readjust the room temperature with the setting knob, andactivate manual operation.Also, he can access operating lines 1 to 50

• The heating engineer can access all operating elements and all operating lines

19.2 Commissioning19.2.1 Installation Instructions

The controller is supplied with Installation Instructions which give a detailed descriptionof installation, wiring and commissioning with functional checks and settings . They arewritten for trained specialists. Each operating line has an empty field in which theselected value can be entered.The installation instructions should not be thrown away after use but kept together withthe plant documentation.

19.2.2 Operating lines

The most important work to be performed when commissioning the plant is entering therequired type of plant. This entry activates all functions and settings required for therespective plant type.

All operating lines contain field-proven and practice-oriented values. Coding, guidevalues, explanations, etc., are given in the Installation Instructions where required.

Plant info

Setting levels

Access rights

Setting the operatingline "Plant type"

Setting the otheroperating lines

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Function block "Service functions" contains 4 operating lines that are especially suitedfor making functional checks:• Operating line 161 permits simulation of the outside temperature• On operating line 162, each of the output relays can be energized• On operating line 163, all actual sensor values can be called up• On operating line 164, all actual setpoints or limit values can be called upIf the display shows Er, the fault can be pinpointed via the error code on operating line 50.

19.3 Installation19.3.1 Mounting location

The ideal location for the controller is a dry room, such as the boiler room.The permissible ambient temperature is 0...50 °C.The RVP33... can be fitted as follows:• In a control panel (on the inner wall or on a DIN mounting rail)• On a panel front• In the control panel front• In the sloping front of a control desk

19.3.2 Mounting choices

The RVP33... can be mounted in one of 3 different ways:• Wall mounting: the base is secured to a flat wall with 3 screws• Rail mounting: the base is snapped on a DIN mounting rail• Flush panel mounting: the base is fitted in a panel cut-out measuring 92 * 138 mm

(+1 mm / –0 mm). The thickness of the front panel may be 3 mm max.

19.3.3 Electrical installation

• The cable lengths should be chosen such that there is sufficient space to open thecontrol panel door

• Cable tension relief must be ensured• The cables of the measuring circuits carry extra-low voltage• The cables from the controller to the regulating unit and the pump carry mains

voltage• The cables to the sensors should not be run parallel to mains carrying cable (e.g.

power supply for the pump)

Operating lines forfunctional checks

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Siemens Building Technologies Basic documentation RVP330, RVP331 CE1P2377enLandis & Staefa Division Engineering 14.11.2000

20 Engineering20.1 Connection terminals

N

B9 B7 B5B2 B31

M

N L F4 K4 F5 K5 F3 Q1 Q3 F1F2

Y1 Y2 F7 Q2 K6

2477

Z04

B12B1 B52

Q5 F6 Y8Y7

N

B9 B7 B5B2 B31

M

N L F4 K4 F5 K5 F3 Q1 Q3 F1F2

Y1 Y2 F7 Q2 K6

2478

Z03

B12B1 B52

Q5 F6 Y8Y7

Low voltage side Mains voltage sideDB Data LPB (only RVP330) N Neutral AC 230 VMB Ground for LPB (only RVP330) L Live AC 230 VA6 PPS (point-to-point interface), connection of room unit F4 Input for K4MD Ground for PPS K4 1. Burner stageB9 Outside sensor F5 Input for K5B1 Flow sensor heating circuit 1 K5 2. Burner stageB12 Flow sensor heating circuit 2 F3 Input for Q1 and Q3M Ground for sensors and changeover contacts Q1 Circulating pumpB31 Storage tank sensor / thermostat Q3 Charging pumpB7 Return sensor F1/F2 Input for Y1 and Y2B5B52

Room sensor heating circuit 1Room sensor heating circuit 2

Y1 Heating circuit mixing valve heating circuit 1OPENING (three-position and two-positionactuator)

Y2 Heating circuit mixing valve heating circuit 1CLOSING

F7 Input for Q2 and K6Q2 Heating circuit pump heating circuit 1K6 Multi-functional relayQ5 Heating circuit pump heating circuit 2F6 Input for Y7 and Y8Y7 Heating circuit mixing valve heating circuit 2

OPENING (three-position and two-positionactuator)

Y8 Heating circuit mixing valve heating circuit 2CLOSING

In addition to the standard connection terminals,there are auxiliary terminals M available.

In addition to the standard connection terminals, thereare auxiliary terminals for N and .

RVP330

RVP331

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Siemens Building Technologies Basic documentation RVP330, RVP331 CE1P2377enLandis & Staefa Division Engineering 14.11.2000

20.2 Connection diagrams20.2.1 Low voltage side

B9

LPBD1 D2

B5B31 B7B2

B31

2477

A01

B2

M

N1

L

N

DB MB A6 MD

B12

B52

D1 D2

B1 B12M M

B52

B M B M B M B M B M B M B M B M

B1 B7 B5B9A6A6

B9

D1 D2

B5B31 B7B2

2478

A01

M

N1

L

N

A6 MD B52

D1 D2

B1 B12M M M

B M B M B M B M B M B M B M B M

B31B2B12 B52B1 B7 B5B9A6A6

20.2.2 Mains voltage side

F1 F224

77A

02

F7

M3 M2

Q3 Q2 K6

1)

F1/F2

Y1 Y2

Y1

AC

230

V

Q1

M1

N1

1.

2.

M5

Q5

F6

Y7 Y8

Y7

Y1 Y2E3

A6 Room units for heating circuits 1 and 2 F2 Manual reset safety limit thermostatB1 Flow sensor heating circuit 1 LPB Data busB12 Flow sensor heating circuit 2 M1 Circulating pumpB2 Boiler sensor M2 Heating circuit pump heating circuit 1B31 Storage tank sensor / thermostat M3 Charging pumpB5 Room sensor heating circuit 1 M5 Heating circuit pump heating circuit 2B52 Room sensor heating circuit 2 N1 Controller RVP33...B7 Return sensor Y1 Actuator heating circuit 1B9 Outside sensor Y7 Actuator heating circuit 2E3 2-stage burnerF1 Thermal reset limit thermostat 1) Multi-functional output

RVP330

RVP331

RVP330, RVP331

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Siemens Building Technologies Basic documentation RVP330, RVP331 CE1P2377enLandis & Staefa Division Mechanical design 14.11.2000

21 Mechanical design21.1 Basic design

The controller is comprised of controller insert, which accommodates the electronics,the power section, the output relays and – on the front – all operating elements, and thebase, which carries the connection terminals. On the inner side of the cover, there is aholder in which the operating instructions can be inserted.The RVP33... has standard overall dimensions 96 * 144 mm.It can be mounted in one of 3 different ways:• Wall mounting• Rail mounting• Flush-panel mountingWhichever mounting method is chosen, the base must always be mounted and wiredfirst. To ensure the orientation will be correct, the upper side of both the base and thecontroller housing carry the marking TOP. Both the top and the bottom side of the basehas 5 knockout holes for cable entries, and there are 10 knock-out holes in the floor.The controller insert is placed in the base. The controller insert has two fixing screwswith rotating levels. If, after insertion of the controller insert, one of the screws istightened, the lever engages in an opening in the base. When the screws are furthertightened (alternately), the controller pulls itself into the base so that it is secured.

21.2 Dimensions

19

26 26 26 26 15

96

144 106,8

12

60,4

14

56112

4,5

138+10

92+

1 0

2477

M01

93 max. 3

Dimensions in mm

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Siemens Building Technologies Basic documentation RVP330, RVP331 CE1P2377enLandis & Staefa Division Technical data 14.11.2000

22 Technical data

General unit data Nominal operating voltage AC 230 V +10/−15 %Frequency 50 Hz

Power consumption 9 VA

Perm. ambient temperatureTransport and storageOperation

–25...+65 °C0...50 °C

Bus loading number E 10 (only RVP330)Back-up of controller clock 12 h min.Weight (net) 0.8 kg

Standards Product safetyAutomatic electrical controls for householdand similar useSpecial requirements for temperaturesensing controlsDegree of protectionSafety class (if correctly installed)

EN 60 730-1

EN 60 730-2-9IP40 EN 60 529II EN 60 730

EMC directiveElectromagnetic immunityElectromagnetic emissions

EN 50 082-2EN 50 081-1

conformity toEMC directiveLow voltage directive

89/336/EEC73/23/EEC

Output relays Nominal voltage AC 230 VNominal current 2 (2) AContact current at AC 24..0.90 V 0.1...2 A, cos ϕ >0.6Contact current at AC 90...250 V 0,02...2 A, cos ϕ >0.6Fusing max. 10 A

Permissible cable lengths to the sensorsCopper cable 0.6 mm dia.Copper cable 1.0 mm2

Copper cable 1.5 mm2

20 m80 m120 m

to the room unitCopper cable 0.25 mm2

Copper cable from 0.5 mm225 m50 m

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Siemens Building Technologies Basic documentation RVP330, RVP331 CE1P2377enLandis & Staefa Division Index 14.11.2000

Index

A

absolute priority ........................................................ 54access rights ............................................................ 77acknowledgment ...................................................... 26acquisition of d.h.w. storage tank temperature ......... 55acquisition of measured values ................................ 19actual outside temperature ....................................... 28addressing devices................................................... 67addressing the QAW50.03 ....................................... 70analog operating elements ....................................... 75assignment of d.h.w. heating.................................... 51attenuated outside temperature................................ 28automatic mode.................................................. 17, 18automatic operation.................................................. 17auxiliary terminals..................................................... 79averaging.................................................................. 19

B

basic heating curve setting ....................................... 35block skip function .................................................... 76boiler operating mode............................................... 43boiler temperature .................................................... 20boost heating............................................................ 33boost of the d.h.w. charging temperature ................. 56building time constant............................................... 28burner cycling protection .......................................... 44burner running time .................................................. 44bus loading number .................................................. 68bus power supply ..................................................... 68button for switching between the heating circuits ..... 76buttons for selecting the heating circuit'soperating mode ........................................................ 75

C

central unit OZW30 .................................................. 73circulating pump ....................................................... 60combinations ............................................................ 14commissioning.......................................................... 77commissioning aids .................................................. 62communication ......................................................... 73compensating variables and auxiliary variables ....... 28composite outside temperature ................................ 28connection terminals................................................. 79control with a 2-stage burner .................................... 45control with a single-stage burner............................. 44controller insert......................................................... 81cycling of the heating circuit pump ........................... 39

D

d.h.w......................................................................... 51d.h.w. charging ......................................................... 61d.h.w. circuit type 0................................................... 16

d.h.w. circuit type 1...................................................16d.h.w. operating modes ............................................17deflection of heating curve........................................36development of outside temperature ........................28digital operating elements.........................................76dimensions ...............................................................81direct burner control..................................................43documentation ..........................................................10dsplay .......................................................................75

E

ECO function ............................................................28ECO heating limits....................................................29economy button ..................................................70, 71electronics ................................................................81engineering...............................................................79entries for LPB..........................................................66ERROR ....................................................................26excess mixing valve temperature .............................41

F

fault status messages...............................................26features ......................................................................9field of use ................................................................11flow temperature.......................................................20flue gas condensation...............................................49flush-panel mounting ................................................78forced charging.........................................................57forced signal .............................................................47freely programmable input ........................................72frost protection for d.h.w. ..........................................51frost protection for the boiler .....................................46frost protection for the building .................................22frost protection for the plant ......................................64function block actuator heating circuit.......................40function block boiler ..................................................43function block d.h.w. .................................................51function block end-user d.h.w. ..................................24function block end-user general................................25function block end-user space heating .....................22function block locking functions ................................69function block multi-functional relay..........................59function block plant type ...........................................27function block pump heating circuit...........................39function block service functions and generalsettings .....................................................................62function block setpoint of return temperaturelimitation ...................................................................49function block space heating ....................................28function blocks..........................................................13

G

gain factor of room influence ....................................34

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gain factor room temperature influence ....................34gain of locking signal ................................................65generation of setpoint ...............................................38

H

handling ....................................................................74handling faults...........................................................19heat demand.............................................................60heat storage capacity................................................28heating circuit operating modes ................................17heating circuit type 4.................................................14heating circuit type 5.................................................15heating circuit type 6.................................................15heating curve ......................................................35, 40heating limits.............................................................29heating program........................................................23heating up brake .......................................................40holiday mode ............................................................23holiday mode ......................................................17, 23holiday period ...........................................................23holiday program........................................................23hours run counter......................................................62

I

indication of faults .....................................................26installation...........................................................77, 78Installation Istructions ...............................................77integral......................................................................45interconnected plant .................................................41

K

knob..........................................................................76

L

legionella function .....................................................57line selection buttons ................................................76line selection buttons ................................................76locked on the software side ......................................69locking functions .......................................................69locking settings .........................................................69LPB...........................................................................66

M

manual d.h.w. charging.......................................12, 58manual operation ......................................................18manual operation buttons .........................................76manual positioning commands .................................76master clock..............................................................66maximum charging time............................................56maximum limitation of the boiler temperature: ..........44maximum limitation of the flow temperature..............40maximum limitation of the rate of setpoint increase ..40maximum limitation of the room temperature............34mechanical design ....................................................81minimum limitation of the boiler temperature ............44minimum limitation of the flow temperature...............40

mounting location..................................................... 78multi-functional relay ................................................ 59

N

no priority ................................................................. 54

O

open-circuit .............................................................. 19operating Instructions............................................... 75operating line principle ............................................. 76operating lines.......................................................... 77operating lines QAW70 ............................................ 72operating mode continuously NORMAL heating ...... 17operating mode continuously REDUCED heating.... 17operation.................................................................. 74operational level....................................................... 18operational status..................................................... 18optimization.............................................................. 30optimization.............................................................. 30optimum shut-down.................................................. 32optimum start control ............................................... 33optimum stop control................................................ 32output relays ............................................................ 81outside sensor.......................................................... 20outside temperature ................................................. 20Outside temperature source..................................... 67overlapping heating periods ..................................... 23overrun..................................................................... 57

P

parallel displacement of heating curve..................... 37parallel operation ..................................................... 54periodic pump run .................................................... 65plant info .................................................................. 77plant types ............................................................... 13power section........................................................... 81protection against boiler overtemperatures.............. 47protection against discharging ................................. 57protection against overtemperatures........................ 39protection against overtemperatures........................ 47protective boiler start-up .......................................... 47protective start-up .................................................... 47pulse lock heating circuit control .............................. 42pump kick................................................................. 65pump M1.................................................20, 43, 47, 48pump overrun......................................................57, 65

Q

QAW70 operating lines ............................................ 72quick setback ........................................................... 32

R

rail mounting ............................................................ 78Reduction of flow temperature setpoint.................... 34relay test .................................................................. 63release limit.............................................................. 45

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reset limit .................................................................. 45room influence.......................................................... 34room model ........................................................ 19, 32room model temperature .......................................... 32room sensor ............................................................. 19room temperature..................................................... 19room temperature deviation...................................... 34room temperature setpoint boost.............................. 33room temperature source ......................................... 30room unit QAW50 / QAW50.03 ................................ 70room unit QAW70..................................................... 71

S

safety functions ........................................................ 44sealing ...................................................................... 81selection of plant type............................................... 27service functions....................................................... 62setpoint of holiday mode........................................... 22setpoint of return temperature limitation ................... 49setpoint of the common flow..................................... 55setpoint rise .............................................................. 40setpoints ................................................................... 22setting buttons .......................................................... 76setting buttons .......................................................... 76setting levels............................................................. 77shifting priority .......................................................... 54short-circuit............................................................... 19simulation of the outside temperature....................... 62software version ....................................................... 62source of time of day ................................................ 66

stand-by....................................................................17STAND-BY ...............................................................17status display:...........................................................75storage tank temperature..........................................21stored heat................................................................28suitable actuators .....................................................10suitable room units ...................................................10suitable sensors..........................................................9summertime........................................................25, 65switching differential d.h.w........................................55switching program 2 .................................................25

T

technical data ...........................................................82three-position control ................................................41two-position control.............................................41, 44two-position controller...............................................43type summary .............................................................9types of buildings......................................................11types of heating systems ..........................................11

U

uncritical locking signals ...........................................65

W

wall mounting............................................................78winter- / summertime changeover ............................65wintertime ...........................................................25, 65wiring ........................................................................77

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Siemens Building Technologies Basic documentation RVP330, RVP331 CE1P2377enLandis & Staefa Division Alphabetical list of operating lines 14.11.2000

Alphabetical list of operating linesFunction, setting, display Operating line Page

A

Actuator running time 85 40

Assignment of d.h.w. heating 121 51

B

Boost of flow temperature setpoint mixing valve 84 40

Boost of the room temperature setpoint 71 28

Building time constant 63 28

Bus power supply 179 62

C

Clock mode 178 62

Controller's software version 195 62

D

D.h.w. charging temperature boost 127 51

D.h.w. priority, flow temperature setpoint 124 51

D.h.w. sensor / d.h.w. thermostat 126 51

Date 40 25

Date of first day of holiday 12 22

Date of last day of holiday 13 22

Device number 169 62

E

End of first ON period 33 25

End of second ON period 35 25

End of third ON period 37 25

F

First heating period, start of NORMAL heating 5 22

First heating period, start of REDUCED heating 6 22

Flow temperature setpoint for frost protection for the plant 168 62

Forced charging 131 51

Function of multi-functional relay 141 59

G

Gain factor for the room influence 70 28

Gain of locking signal 173 62

H

Heating curve, flow temperature setpoint TV1 at an outsidetemperature of 15 °C

14 22

Heating curve, flow temperature setpoint TV2 at an outsidetemperature of –5 °C

15 22

Heating limit for NORMAL heating (ECO day) 61 28

Heating limit for REDUCED heating (ECO night) 62 28

Hours run counter 194 62

88/92


I

Indication of faults 50 25

Integral action time of control 87 40

L

Locking of settings 198 69

M

Maximum d.h.w. charging time 129 51

Maximum early shutdown 68 28

Maximum heating up time 67 28

Maximum limitation of the boiler temperature 92 43

Maximum limitation of the flow temperature 81 40

Maximum limitation of the room temperature 69 28

Maximum rate of flow temperature increase 83 40

Minimum limitation of the boiler temperature 93 43

Minimum limitation of the burner running time 95 43

Minimum limitation of the flow temperature 82 40

O

Operating mode of the boiler 91 43

Operating mode pump M1 99 43

Outside temperature for frost protection for the plant 167 62

Outside temperature simulation 161 62

Outside temperature source 180 62

Overtemperature protection of the pump heating circuit 75 39

P

P-band of control 86 40

Plant type 51 27

Pump kick 175 62

Pump overrun time 174 62

Q

Quick setback 64 28

R

Relay test 162 62

Release limit for second burner stage 96 43

Release of d.h.w. heating 123 51

Reset limit for second burner stage 97 43

Room temperature source 65 28

S

Second heating period, start of NORMAL heating 7 22

Second heating period, start of REDUCED heating 8 22

Segment number 170 62

Sensor test 163 62

Setpoint of holiday mode / frost protection 3 22

Setpoint of NORMAL heating 1 22

Setpoint of REDUCED heating 2 22

Setpoint of the d.h.w. temperature 26 24

Setpoint of the legionella function 130 51

89/92


Setpoint of the return temperature limitation 101 49

Setpoint or limit values 4 62

Start of first ON period 32 25

Start of second ON period 34 25

Start of third ON period 36 25

Summer- / wintertime changeover 177 62

Switching differential 89 40

Switching differential d.h.w. 128 51

Switching differential of the boiler 94 43

T

Third heating period, start of NORMAL heating 9 22

Third heating period, start of REDUCED heating 10 22

Time of day 38 25

Type of actuator 88 40

Type of optimization 66 28

W

Waiting time for second burner stage 98 43

Weekday 39 25

Weekday for switching program 2 31 25

Weekday for the heating program 4 22

Winter- / summertime changeover 176 62

Y

Year 41 25

90/92


91/92


92/92


Siemens Building Technologies AGLandis & Staefa DivisionGubelstrasse 22CH 6301 ZugTel. 41 41-724 24 24Fax 41 41-724 35 22www.landisstaefa.com

© Siemens Building Technologies AGSubject to alteration

Date post:	28-Jul-2018
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RVP330, RVP331 Heating and Domestic Hot Water …1).pdf · Heating and Domestic Hot Water...

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