TACO ZONE CONTROLS WIRING GUIDE - Pexheat.com · taco zone controls wiring guide pages ... zone 1...

TACO ZONE CONTROLS WIRING GUIDE

Pages

Switching Relays – Single Zone Wiring 2 – 12

Switching Relays – NON EXP Connected Together with Priority 3 – 19

Switching Relays – EXP Connected Together with Priority 10 – 11

Switching Relays – Multiple Indirect Hot Water Heaters 12 – 13

Switching Relays – EXP Connected To Reset Controls (PC700, 702 & 705) 14 – 21

Zone Valve Controls – NON EXP Connected Together with Priority 22 – 27

Zone Valve Controls – EXP Connected Together with Priority 28 – 31

Zone Valve Controls – Connected To Reset Controls (PC700, 702 & 705) 32 – 39

Hydro Air Fan Controls (HAFC 101 & 201) 40 – 44

Specialty Thermostat and Zone Valve Wiring 45 – 50

Instruction Sheets 51 – 60

Low Water Cutoff and Industrial Flow Switch 61 – 69

Aquastat Wiring 70 – 74

Standard Terms and Definitions – 75

Cross Reference 76 – 77

Do it once.Do it right.

© Taco Catalog No. 100-9.0 Effective Date: May 1, 2003Supersedes Date: August 1, 2001

TACO Product Information

Switching RelaysProduct No. DescriptionSR501 1 Zone Switching RelaySR501-845RP 1 Zone Switching Relay Replacement PC Board for

Honeywell R845, RA89A, RA832 or Comparable RelaySR502 2 Zone Switching Relay with PrioritySR503 3 Zone Switching Relay with PrioritySR504 4 Zone Switching Relay with PrioritySR506 6 Zone Switching Relay with Priority

Switching Relays with PowerPort Options and Expandable to 20 ZonesProduct No. DescriptionSR503-EXP 3 Zone Switching Relay with Priority and 3 PowerPortsSR504-EXP 4 Zone Switching Relay with Priority and 3 PowerPortsSR506-EXP 6 Zone Switching Relay with Priority and 3 PowerPorts

Zone Valve ControlsProduct No. DescriptionZVC403 3 Zone Valve ControlZVC404 4 Zone Valve Control with PriorityZVC405 5 Zone Valve ControlZVC406 6 Zone Valve Control with Priority

Zone Valve Controls with PowerPort Options and Expandable to 20 ZonesProduct No. DescriptionZVC404-EXP 4 Zone Valve Control with Priority and 2 PowerPorts ZVC406-EXP 6 Zone Valve Control with Priority and 2 PowerPorts

Plug-In PowerPort Cards (For use with all -EXP controls)Product No. DescriptionPC600 Post Purge Timer Plug-In CardPC605 Priority Protection Plug-In CardPC610 Universal Timer/Pump Exercise Plug-In Card

Add-On Power Controls (For use with all -EXP controls)Product No. DescriptionPC700 Boiler Reset ControlPC702 2-Stage Boiler Reset ControlPC705 Variable Speed Pump Injection Mixing Control

Fan ControlsProduct No. DescriptionHAFC101 Hydro Air Fan ControlHAFC201 Hydro Air Fan Control with Optional Time Delays

Do it once.Do it right.

2

AT

TO: 120 VACPOWER

CIRCULATOR

JUMPER

120 VACINPUT

THERMOST

R WT T COM

24VAC

N/O N/C N/C N/ON H 3 4 4 6 6 5

TO: ZC

SR5011 ZONE

SWITCHING RELAY

POWER

T STAT

TO: ZR

ALTERNATIVE WIRING(TANKLESS COIL)

T

SR501 Switching Relay Wiring

AT

TO: 120 VACPOWER

CIRCULATOR

JUMPER

120 VACINPUT

THERMOST

R WT T COM

24VAC

N/O N/C N/C N/ON H 3 4 4 6 6 5

TO: TT ON BOILER

SR5011 ZONE

SWITCHING RELAY

POWER

T STAT

TYPICAL WIRING(COLD START)

T

TO: 120 VAC POWER

CIRCULATOR

R WT T COM

24VAC

N/O N/C N/C N/ON H 3 4 4 6 6 5

TO: TT ON BOILER

SR5011 ZONE

SWITCHING RELAY

POWER *

T STAT *

ALTERNATIVE WIRING(24 VAC POWERED INPUT SIGNAL)

N

H

REMOVE JUMPER.DO NOT CONNECT POWERTO N AND H TERMINALS.

* T STAT LIGHT WILL GOON AND OFF WITH 24 VACSIGNAL. POWER LIGHTWILL ALWAYS BE OFF.

24 VACSIGNAL

3

SR502/503 Switching Relay Controlling Another SR502/503 Switching Relay

SR 503

24 VACPOWER

FUSE 1 AMP

ZONE1 ZONE2 ZONE3

120 VOLT CIRCULATORS

ZONE1 ZONE2 ZONE3

TO: "TT" ON AQUASTAT CONTROL

JUMPERN P ZC H X ZR1

X2

ZONE 2

POWERZONE 1

ZONE 3

THREE ZONE SWITCHING RELAYWITH OPTIONAL PRIORITY

TT T

SR 503 ZONE1 ZONE2 ZONE3

24 VACPOWER

FUSE 1 AMP

120 VOLTCIRCULATORS

ZONE1 ZONE2 ZONE3

120 VAC POWER

JUMPERN P ZC H X ZR1

X2


TA T

BOILER

H

N

SLAVE

MASTER

AQUASTATON DHWHEATER

ZONE 2

POWERZONE 1

ZONE 3

DHWHEATER

CIRCULATOR

PRIORITY ONVIA JUMPERPLACEMENT

PRIORITY OFFVIA JUMPERPLACEMENT

4

SR502/503 Switching Relay Controlling Another SR504/506 Switching Relay

SIX ZONE SWITCHING RELAY WITH OPTIONAL PRIORITY

ZONE 6

ON

OFF

PRIORITY

120V RELAY

120 VOLT CIRCULATORSZC ZR

X XEND

SWITCH

POWERINPUT

120 VAC INPUT

TO: "TT" ON BOILER

ZONE1 ZONE2 ZONE3 ZONE4 ZONE5 ZONE6


FUSE 1 AMP

24 VACPOWER

SR 506

ZONE 2

POWERZONE 1

ZONE 3ZONE 4

ZONE 5ZONE 6

THERMOSTATS

BOILER

H

N


24 VACPOWER

FUSE 1 AMP

120 VOLTCIRCULATORS

ZONE1 ZONE2 ZONE3JUMPERS

N P ZC H X ZR1

X2


TA T

MASTER

ZONE 2

POWERZONE 1

ZONE 3

SLAVET

PRIORITY ONVIA JUMPER PLACEMENT

REMOVEJUMPER

PRIORITYOFF


5

Two SR504/506 Switching Relays Connected Together

BOILER

H

N

AAQUASTAT ONDHW HEATER

TT T

FOUR ZONE SWITCHING RELAY WITH OPTIONAL PRIORITY

ZONE 4

ONOFF

PRIORITY

120V RELAY

FUSE 1 AMP

24 VAC

POWER

ZONE 1 ZONE 2 ZONE 3 ZONE 4

120 VAC INPUT


X XEND

SWITCH

ZONE1 ZONE2 ZONE3 ZONE4 POWER

INPUT

SR 504

ZONE 2

POWERZONE 1

ZONE 3ZONE 4

JUMPER

TT T


ZONE 4

ONOFF

PRIORITY

120V RELAY

FUSE 1 AMP

24 VACPOWER


120 VAC INPUT

TO: "TT" ON BOILER


X XEND

SWITCH


INPUT

SR 504

ZONE 2

POWERZONE 1

ZONE 3ZONE 4

JUMPER

DHWHEATER

CIRCULATOR

OUTPUTNOTUSED

PRIORITYON

PRIORITYON

6

Priority Zoning Circulator Controlling SR504/506 Switching Relay


ZONE 6

ON

OFF

PRIORITY

120V RELAY


X XEND

SWITCH

POWERINPUT

120 VAC INPUT

TO: "TT" ON BOILER



FUSE 1 AMP

24 VACPOWER

SR 506

ZONE 2

POWERZONE 1

ZONE 3ZONE 4

ZONE 5ZONE 6

ONOFF

PRIORITY

POWER IN

120 VAC INPUT

THERMOSTAT BOILER PRIORITY

PRIORITY ZONING CIRCULATOR

PR-IN PR-OUT LIVE NEUT1 2 3 4

THERMOSTATS

BOILER

H

N

A

AQUASTAT ONDHW HEATER

MASTER

SLAVE

PRIORITYON

REMOVEJUMPER

PRIORITYOFF

T

7

Priority Zoning Circulator Controlling 2 SR504/506 Switching Relays

ZONE 4

ONOFF

PRIORITY

120V RELAY

FUSE 1 AMP



X XEND

SWITCH


INPUT

SR 504

ZONE 2

POWERZONE 1

ZONE 3ZONE 4

TT T

BOILER

ZONE 4

ONOFF

PRIORITY

120V RELAY

FUSE 1 AMP

24 V

AC

POW

ER


120 VAC INPUT

TO: "TT" ON BOILER


X XEND

SWITCH


INPUT

SR 504

ZONE 2

POWERZONE 1

ZONE 3ZONE 4

TT T

H

N

FOUR ZONE SWITCHING RELAYWITH OPTIONAL PRIORITY


SLAVESLAVEPRIORITY

OFFPRIORITY

OFF

T T

24 V

AC

POW

ER

ONOFF

PRIORITY

POWER INTHERMOSTAT BOILER PRIORITY




120 VAC INPUT

MASTER

PRIORITYON

REMOVEJUMPER

REMOVEJUMPER

SR502/503 Switching Relay Controlling 2 SR504/506 Switching Relays

ZONE 4

ONOFF

PRIORITY

120V RELAY

FUSE 1 AMP



X XEND

SWITCH


INPUT

SR 504

ZONE 2

POWERZONE 1

ZONE 3ZONE 4

TT T

BOILER

ZONE 4

ONOFF

PRIORITY

120V RELAY

FUSE 1 AMP24

VA

CPO

WER


120 VAC INPUT

TO: "TT" ON BOILER


X XEND

SWITCH


INPUT

SR 504

ZONE 2

POWERZONE 1

ZONE 3ZONE 4

TT T

H

N

A


24 VACPOWER

FUSE 1 AMP

ZONE1 ZONE2 ZONE3

JUMPER

N P ZC H X ZR1

X2

ZONE 2

POWERZONE 1

TWO ZONE SWITCHING RELAYWITH OPTIONAL PRIORITY

PRIORITYON



MASTER

SLAVESLAVEPRIORITY

OFFPRIORITY

OFF

T T

T T24

VA

CPO

WER

ZONE 3

REMOVEJUMPER

REMOVEJUMPER

AQUASTAT ONDHW HEATER

8

9


ZONE 4

ONOFF

PRIORITY

120V RELAY

FUSE 1 AMP

24 VAC

POWER



X XEND

SWITCH


INPUT

SR 504

ZONE 2

POWERZONE 1

ZONE 3ZONE 4

TT T

BOILER


ZONE 4

ONOFF

PRIORITY

120V RELAY

FUSE 1 AMP

120 VACPOWER


120 VACINPUT

TO: "TT" ON BOILER


X XEND

SWITCH


INPUT

SR 504

ZONE 2

POWERZONE 1

ZONE 3ZONE 4

TT T

H

N

T

DHWCIRCULATOR

JUMPER

R WT T COM

24VAC

N/O N/C N/C N/ON H 3 4 4 65 5

SR501POWER

T STAT

120 VAC INPUT

1 ZONE SWITCHING RELAY

AQUASTAT ON

DHW HEATERA

T

MASTER

SLAVESLAVE

REMOVEJUMPER

REMOVEJUMPER

PRIORITY OFF PRIORITY OFF

SR501 Switching Relay Controlling 2 SR504/506 Switching Relays

10

2 Expandable Switching Relays Connected Together


ZONE 4

ONOFF

PRIORITY

120V RELAY

FUSE 1 AMP

24 VAC

POWER

24 VAC

POWER

MASTER

PLUG-IN CARDS

RESET NORMAL

SLAVE

POWERCONTROLINTERFACE


THERMOSTATS


120 VAC INPUT


X XEND

SWITCH


INPUT

SR 504-EXP

ZONE 2

POWERZONE 1

ZONE 3ZONE 4

JUMPER

BOILER

SWITCH SETTINGS

Master/Slave: SlaveReset/Normal: NormalPriority Zone: Off

120 VAC INPUT

H

N

SWITCH SETTINGSMaster/Slave: MasterReset/Normal: NormalPriority Zone: On

1 2 3 4EXPANSION

1 2 3 4EXPANSION

SR504-EXP

SIX ZONE SWITCHING RELAYWITH OPTIONAL PRIORITY

ZONE 6

ONOFF

PRIORITY

120V RELAY

PLUG-IN CARDS

FUSE 1 AMP

SLAVE

MASTER

RESET NORMAL


X XEND

SWITCH

POWERINPUT

TO: "TT" ON BOILER



SR 506-EXP

ZONE 2

POWERZONE 1

ZONE 3ZONE 4ZONE 5ZONE 6

JUMPER

DHWCIRCULATOR

THERMOSTATS

SLAVE

MASTERA


T

T

11


ZONE 4

ONOFF

PRIORITY

120V RELAY

FUSE 1 AMP

24 VAC

POWER

24 VAC

POWER

MASTER

PLUG-IN CARDS

RESET NORMAL

SLAVE




120 VAC INPUT


X XEND

SWITCH


INPUT

SR 504-EXP

ZONE 2

POWERZONE 1

ZONE 3ZONE 4

JUMPER

BOILER

SWITCH SETTINGS

Master/Slave: MasterReset/Normal: NormalPriority Zone: On

120 VACINPUT

H

N

SWITCH SETTINGS


1 2 3 4EXPANSION

1 2 3 4EXPANSION

SR504-EXP

SIX ZONE SWITCHING RELAYWITH OPTIONAL PRIORITY

ZONE 6

ONOFF

PRIORITY

120V RELAY

PLUG-IN CARDS

FUSE 1 AMP

SLAVE

MASTER

RESET NORMAL


X XEND

SWITCH

POWERINPUT

TO: "TT" ON BOILER



SR 506-EXP

ZONE 2

POWERZONE 1


JUMPER


ZONE 4

ONOFF

PRIORITY

120V RELAY

FUSE 1 AMP

24 VAC

POWER

MASTER

PLUG-IN CARDS

RESET NORMAL

SLAVE



120 VAC INPUT


X XEND

SWITCH


INPUT

SR 504-EXP

ZONE 2

POWERZONE 1

ZONE 3ZONE 4

JUMPER

SWITCH SETTINGS


1 2 3 4EXPANSION

SR504-EXP

DHWCIRCULATOR

AQUASTAT ONDHW HEATERAT

T TSLAVE

MASTER

SLAVE

3 Expandable Switching Relays Connected Together

ZONE 4

ONOFF

PRIORITY

120V RELAY

FUSE 1 AMP

24 VAC

POWER



X XEND

SWITCH


INPUT

SR 504

ZONE 2

POWERZONE 1

ZONE 3ZONE 4

TT T

BOILER

ZONE 4

ONOFF

PRIORITY

120V RELAY

FUSE 1 AMP

24 V AC

POWER


120 VAC INPUT

TO: "TT" ON BOILER


X XEND

SWITCH


INPUT

SR 504

ZONE 2

POWERZONE 1

ZONE 3ZONE 4

TT T

H

N

A

JUMPERJUMPER


24 VACPOWER

FUSE 1 AMP

ZONE1 ZONE2 ZONE3

JUMPERS

N P ZC H X ZR1

X2

ZONE 2

POWERZONE 1


A

PRIORITYOFF



ZONENOTUSED

ZONENOTUSED

MASTER

SLAVE SLAVEPRIORITY

ONPRIORITY

ON

AQUASTATS ONDHW HEATERS

12 2 Indirect Water Heaters with Priority Connected to Standard Switching Relays

13

BOILER

120 VAC INPUT

TO: "TT" ON BOILER

H

N

A


24 VACPOWER

FUSE 1 AMP

ZONE1 ZONE2 ZONE3

JUMPERS

N P ZC H X ZR1

X2

ZONE 2

POWERZONE 1


A

PRIORITYOFF

1 2 3 4EXPANSION


ZONE 4

ONOFF

PRIORITY

120V RELAY

FUSE 1 AMP

24 VAC

POWER

MASTER

PLUG-IN CARDS

RESET NORMAL

SLAVE




X XEND

SWITCH


INPUT

SR 504-EXP

ZONE 2

POWERZONE 1

ZONE 3ZONE 4

JUMPER

SWITCH SETTINGS


1 2 3 4EXPANSION

SR504-EXP

T


ZONE 4

ONOFF

PRIORITY

120V RELAY

FUSE 1 AMP

24 VAC

POWER

MASTER

PLUG-IN CARDS

RESET NORMAL

SLAVE




X XEND

SWITCH


INPUT

SR 504-EXP

ZONE 2

POWERZONE 1

ZONE 3ZONE 4

JUMPER

SWITCH SETTINGS


SR504-EXP

T

DHWCIRCULATORS

AQUASTATS ONDHW HEATERS

MASTER SLAVE

ZONENOTUSED

2 Indirect Water Heaters with Priority Connected to EXP Switching Relays


ZONE 4

ONOFF

PRIORITY

120V RELAY

FUSE 1 AMP

24 VAC

POWER

MASTER

1234 PLUG-IN CARDS

RESET NORMAL

SLAVE


THERMOSTATS


120 VAC INPUT

TO: "TT" ON BOILER


X XEND

SWITCH


INPUT

ZONE 2

POWERZONE 1

ZONE 3ZONE 4

JUMPER

H

N

ZONECONTROL

BOILSEN

OUTSEN

BOILER SENSOR

OUTDOORSENSOR

PC700

BOILER

SWITCH SETTINGS

Master/Slave: MasterReset/Normal: ResetPriority Zone: On or Off

SR 504-EXP

14 PC700 Boiler Reset Control Connected to EXP Switching Relay

15


ZONE 4

ONOFF

PRIORITY

120V RELAY

FUSE 1 AMP

24 VAC

POWER

MASTER

1234 PLUG-IN CARDS

RESET NORMAL

SLAVE


THERMOSTATS


120 VAC INPUT


X XEND

SWITCH


INPUT

ZONE 2

POWERZONE 1

ZONE 3ZONE 4

JUMPERH

N

ZONECONTROL

BOILSEN

OUTSEN

BOILER SENSOR

OUTDOORSENSOR

PC702

STAGE1

STAGE2

BOILER#2

BOILER#1

DHWDEMAND SWITCH SETTINGS

Master/Slave: MasterReset/Normal: NormalPriority Zone: On or Off

SR 504-EXP

WIRING NEEDED ONLY IFPRIORITY ZONE IS DHW

SYSTEMCIRCULATOR(OPTIONAL)

T

PC702 2–Stage Boiler Reset Control Connected to EXP Switching Relay


ZONE 4

ONOFF

PRIORITY

120V RELAY

FUSE 1 AMP

24 VAC

POWER

MASTER

1234 PLUG-IN CARDS

RESET NORMAL

SLAVE

THERMOSTATS


120 VAC INPUT

TO: "TT" ON BOILER


X XEND

SWITCH


INPUT

ZONE 2

POWERZONE 1

ZONE 3ZONE 4

JUMPER

H

N

BOILER

SWITCH SETTINGS


ZONECONTROL

BOILSEN

OUTSEN

BOILER SENSOR

OUTDOORSENSOR

PC705-2

SUPSEN

SUPPLY SENSOR

INJECTIONCIRCULATOR

SYSTEMCIRCULATOR

AND/OR BOILER

BLACK

BLUE

RED

GREEN/GROUND

SR 504-EXP

(SEE NOTE B)

NOTE A: WHEN SYSTEM CIRCULATOR IS CONNECTED TO ZR TERMINAL ON SWITCHING RELAY, THE MODE SWITCH MUST BE SET TO NORMAL.THE PC705-2 WILL NOT RESET THE BOILER WHEN IN THE NORMAL MODE.

NOTE B: WHEN SYSTEM CIRCULATOR IS CONNECTED TO RED WIRE ON PC705-2, THE CIRCULATOR WILL OPERATE ONLY WHEN THERMOSTAT CALLS FOR HEATAND THE OUTDOOR TEMPERATURE IS BELOW THE WARM WEATHER SHUT DOWN (WWSD) TEMPERATURE. THE WWSD CAN BE ADJUSTED OR TURNEDOFF SO THAT THE CIRCULATOR IS NOT AFFECTED BY OUTDOOR TEMPERATURE.

SYSTEMCIRCULATOR

AND/OR BOILER(SEE NOTE A)

T

16 PC705 Variable Speed Pump Injection Control Connected to EXP Switching Relay

17

PC700 Boiler Reset Control Connected to 2 EXP Switching Relays


ZONE 4

ONOFF

PRIORITY

120V RELAY

FUSE 1 AMP

24 VAC

POWER

MASTER

PLUG-IN CARDS

RESET NORMAL

SLAVE


THERMOSTATS


120 VACINPUT

TO: "TT" ON BOILER


X XEND

SWITCH


INPUT

ZONE 2

POWERZONE 1

ZONE 3ZONE 4

JUMPER

ZONECONTROL

BOILSEN

OUTSEN

BOILER SENSOR

OUTDOORSENSOR

PC700

BOILER

SWITCH SETTINGS



ZONE 4

ONOFF

PRIORITY

120V RELAY

FUSE 1 AMP

24 VACPOWER

MASTER

PLUG-IN CARDS

RESET NORMAL

SLAVE


THERMOSTATS


120 VAC INPUT


X XEND

SWITCH


INPUT

ZONE 2

POWERZONE 1

ZONE 3ZONE 4

JUMPER H

N

SWITCH SETTINGS

Master/Slave: SlaveReset/Normal: NormalPriority Zone: No Priority

1 2 3 4EXPANSION

1 2 3 4EXPANSION

SR 504-EXP

SR 504-EXP

MASTER

SLAVE


T

T

18

PC702 2–Stage Boiler Reset Control Connected to 2 EXP Switching Relays


ZONE 4

ONOFF

PRIORITY

120V RELAY

FUSE 1 AMP

24 VAC

POWER

MASTER

PLUG-IN CARDS

RESET NORMAL

SLAVE


THERMOSTATS


120 VAC INPUT


X XEND

SWITCH


INPUT

ZONE 2

POWERZONE 1

ZONE 3ZONE 4

JUMPER

SWITCH SETTINGS


1 2 3 4EXPANSION

ZONECONTROL

BOILSEN

OUTSEN

BOILER SENSOR

OUTDOORSENSOR

PC702

STAGE1

STAGE2

BOILER#2

BOILER#1

DHWDEMAND

SR 504-EXP


MASTER


ZONE 4

ONOFF

PRIORITY

120V RELAY

FUSE 1 AMP

24 VAC

POWER

MASTER

PLUG-IN CARDS

RESET NORMAL

SLAVE


THERMOSTATS


120 VAC INPUT


X XEND

SWITCH


INPUT

ZONE 2

POWERZONE 1

ZONE 3ZONE 4

JUMPERH

N

SWITCH SETTINGS


1 2 3 4EXPANSION

SR 504-EXP

SLAVE


T

T

19

PC705 Variable Speed Pump Injection Control Connected to 2 EXP Switching Relays


ZONE 4

ONOFF

PRIORITY

120V RELAY

FUSE 1 AMP

24 VAC

POWER

MASTER

PLUG-IN CARDS

RESET NORMAL

SLAVE

THERMOSTATS


120 VACINPUT

TO: "TT" ON BOILER


X XEND

SWITCH


INPUT

ZONE 2

POWERZONE 1

ZONE 3ZONE 4

JUMPER

BOILER

SWITCH SETTINGS



ZONE 4

ONOFF

PRIORITY

120V RELAY

FUSE 1 AMP

24 VAC

POWER

MASTER

PLUG-IN CARDS

RESET NORMAL

SLAVE


THERMOSTATS


120 VAC INPUT


X XEND

SWITCH


INPUT

ZONE 2

POWERZONE 1

ZONE 3ZONE 4

JUMPERH

N

SWITCH SETTINGS


1 2 3 4EXPANSION

1 2 3 4EXPANSION

ZONECONTROL

BOILSEN

OUTSEN

BOILER SENSOR

OUTDOORSENSOR

PC705-2

SUPSEN

SUPPLY SENSOR

INJECTIONCIRCULATOR

SYSTEMCIRCULATOR

BLACK

BLUE

RED

GREEN/GROUND

SR 504-EXP

SR 504-EXP

MASTER

SLAVE


(SEE NOTE A ON PAGE 16)

(SEE NOTE BON PAGE 16)

T

T

20

PC700 and PC705 Controls Connected to 2 EXP Switching Relays


ZONE 4

ONOFF

PRIORITY

120V RELAY

FUSE 1 AMP

24 VAC

POWER

MASTER

PLUG-IN CARDS

RESET NORMAL

SLAVE


THERMOSTATS


120 VAC INPUTTO: "TT" ON BOILER


X XEND

SWITCH


INPUT

ZONE 2

POWERZONE 1

ZONE 3ZONE 4

JUMPER

ZONECONTROL

BOILSEN

OUTSEN

BOILER SENSOR

OUTDOORSENSOR

PC700

BOILER

SWITCH SETTINGS



ZONE 4

ONOFF

PRIORITY

120V RELAY

FUSE 1 AMP

24 VAC

POWER

MASTER

PLUG-IN CARDS

RESET NORMAL

SLAVE

THERMOSTATS


120 VAC INPUT


X XEND

SWITCH


INPUT

ZONE 2

POWERZONE 1

ZONE 3ZONE 4

H

N

SWITCH SETTINGS


1 2 3 4EXPANSION

1 2 3 4EXPANSION

ZONECONTROL

BOILSEN

OUTSEN

BOILER SENSOR

OUTDOORSENSOR

PC705-2

SUPSEN

SUPPLY SENSOR

INJECTIONCIRCULATOR

SYSTEMCIRCULATOR

BLACK

BLUE

RED

GREEN/GROUND

SYSTEM CIRCULATOR(OPTIONAL LOCATION)


SR 504-EXP

SR 504-EXP

MASTER

SLAVE

JUMPER

(SEE NOTE BON PAGE 16)

T

T

21

PC702 and PC705 Controls Connected to 2 EXP Switching Relays


ZONE 4

ONOFF

PRIORITY

120V RELAY

FUSE 1 AMP

24 VAC

POWER

MASTER

PLUG-IN CARDS

RESET NORMAL

SLAVE


THERMOSTATS


120 VAC INPUT


X XEND

SWITCH


INPUT

ZONE 2

POWERZONE 1

ZONE 3ZONE 4

JUMPER

SWITCH SETTINGS



ZONE 4

ONOFF

PRIORITY

120V RELAY

FUSE 1 AMP

24 VAC

POWER

MASTER

PLUG-IN CARDS

RESET NORMAL

SLAVE

THERMOSTATS


120 VAC INPUT


X XEND

SWITCH


INPUT

ZONE 2

POWERZONE 1

ZONE 3ZONE 4

JUMPER

H

N

SWITCH SETTINGS


1 2 3 4EXPANSION

1 2 3 4EXPANSION

ZONECONTROL

BOILSEN

OUTSEN

BOILER SENSOR

OUTDOORSENSOR

PC705-2

SUPSEN

SUPPLY SENSOR

INJECTIONCIRCULATOR

SYSTEMCIRCULATOR

BLACK

BLUE

RED

GREEN/GROUND



ZONECONTROL

BOILSEN

OUTSEN

BOILER SENSOR

OUTDOORSENSOR

PC702

STAGE1

STAGE2

BOILER#2

BOILER#1

DHWDEMAND

SR 504-EXP


SR 504-EXP

MASTER

SLAVE(SEE NOTE BON PAGE 16)

T

T

24 VAC

ZONE 1 ZONE 2 ZONE 3 ZONE 4 ZONE 5

FUSE (5 A

MP M

AX

)

T T T T T T T T T T

ZVC 405

1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4ZONE 1 ZONE 2 ZONE 3 ZONE 4 ZONE 5

2 WIRE ZONE VALVE(NO END SWITCH)

JUMPER3 & 4

TACO3 WIRE ZONE VALVE

123

MOTOR ENDSWITCH

THERMOSTAT THERMOSTAT THERMOSTAT

4 WIRE ZONE VALVE(POWER OPEN, SELF CLOSING)

T STAT 1

VALVE 1

T STAT 2

VALVE 2T STAT 3VALVE 3T STAT 4

VALVE 4T STAT 5VALVE 5POWER

FIVE ZONE ZONE VALVE CONTROL

24 VAC

FA

CTO

RYIN

STA

LLED

TRA

NSF

ORM

ER

120 VACINPUT

WHITE

BLACK

ENDSWITCH

N/O COM N/C

TO BOILER AQUASTAT RELAYPO

WER

IN

24 VAC

FA

CTO

RYIN

STA

LLED

TRA

NSF

ORM

ER

120 VACINPUT

WHITE

BLACK

BOILER

H

N

SYSTEMPUMP

SYSTEM PUMP AND BOILER TURN ONWHEN ANY ZONE VALVE OPENS.

T T T

22 ZVC403/405 with System Pump

23

24 VAC

ZONE 1 ZONE 2 ZONE 3 ZONE 4 ZONE 5 ZONE 6

MODENORMAL RESET

FUSE (7 A

MP M

AX

)

T T T T T T T T T T T T

ZONE 6 PRIORITY

OFF

ON

ZVC 406



JUMPER3 & 4


123

MOTOR ENDSWITCH


4 WIREZONE VALVE

(POWER OPEN, SELF CLOSING)

T STAT 1

VALVE 1

T STAT 2


VALVE 4T STAT 5VALVE 5T STAT 6VALVE 6POWER

SIX ZONE ZONE VALVE CONTROLWITH OPTIONAL PRIORITY

24 VAC

FA

CTO

RYIN

STA

LLED

TRA

NSF

ORM

ER

120 VACINPUT

WHITE

BLACK

POW

ER IN

24 VAC

FA

CTO

RYIN

STA

LLED

TRA

NSF

ORM

ER

120 VACINPUT

WHITE

BLACK

N/O COMZONE 6 RELAY

DRYCONTACTS

ENDSWITCH

EXTRAEND

SWITCH

MAIN N/C

TO BOILER AQUASTAT RELAY

BOILER

H

N

SYSTEMPUMP

A AQUASTAT ONDHW HEATER


1 2 3 4ZONE 6

PRIORITYZONE

JUMPER3 & 4 SEE NOTE

Note: When a circulator is used on thepriority zone instead of a zone valve,jumper 3 and 4 of the priority zone.

T T T

ZVC404/406 with System Pump

24 VAC


MODENORMAL RESET

FUSE (7 A

MP M

AX

)


ZONE 6 PRIORITY

OFF

ON

ZVC 406



JUMPER3 & 4


123

MOTOR ENDSWITCH



T STAT 1

VALVE 1

T STAT 2




24 VAC

FA

CTO

RYIN

STA

LLED

TRA

NSF

ORM

ER

120 VACINPUT

WHITE

BLACK

POW

ER IN

24 VAC F

AC

TORY

INST

ALL

EDTR

AN

SFO

RMER

120 VACINPUT

WHITE

BLACK

N/O COMZONE 6 RELAYEND

SWITCH

EXTRAEND

SWITCH

MAIN N/C

1 2 3 4ZONE 6

PRIORITYZONE



BOILER

H

N

DHWPUMP



BOILER TURNS ON WHEN ANY ZONE VALVE OPENS.

DHW PUMP TURNS ON ONLY WHEN PRIORITY ZONE CALLS.

T T T

24 ZVC404/406 with Domestic Hot Water (DHW) Pump

25

24 VAC


MODENORMAL RESET

FUSE (7 A

MP M

AX

)


ZONE 6 PRIORITY

OFF

ON

ZVC 406



JUMPER3 & 4


123

MOTOR ENDSWITCH



T STAT 1

VALVE 1

T STAT 2




24 VAC

FA

CTO

RYIN

STA

LLED

TRA

NSF

ORM

ER

120 VACINPUT

WHITE

BLACK

POW

ER IN

24 VAC

FA

CTO

RYIN

STA

LLED

TRA

NSF

ORM

ER

120 VACINPUT

WHITE

BLACK


SWITCH

EXTRAEND

SWITCH

MAIN N/C

1 2 3 4ZONE 6

PRIORITYZONE



BOILER

H

N

DHWPUMP



SYSTEM PUMP AND BOILER TURN ON WHEN ANY ZONE VALVE OPENS.


SYSTEMPUMP

T T T

ZVC404/406 with System and DHW Pumps

26

24 VAC


MODENORMAL RESET

FUSE (7 A

MP M

AX

)


ZONE 6 PRIORITY

OFF

ON

ZVC 406



JUMPER3 & 4


123

MOTOR ENDSWITCH



T STAT 1

VALVE 1

T STAT 2




24 VAC

FA

CTO

RYIN

STA

LLED

TRA

NSF

ORM

ER

120 VACINPUT

WHITE

BLACK

POW

ER IN

24 VAC F

AC

TORY

INST

ALL

EDTR

AN

SFO

RMER

120 VACINPUT

WHITE

BLACK


SWITCH

EXTRAEND

SWITCH

MAIN N/C

1 2 3 4ZONE 6

PRIORITYZONE



BOILER

H

N

DHWPUMP





SECONDARY PUMP COMES ON WHEN ANY ZONE CALLS EXCEPT PRIORITY ZONE.

SYSTEMPUMP

SECONDARYPUMP

T T T

ZVC404/406 with System, DHW and Secondary Pumps

27

2 ZVC404/406 Connected Together with Priority

24 VAC

POWER IN

ZONE 2 ZONE 3 ZONE 4

MODENORMAL RESET

FUSE (3 A

MP M

AX

)

ZONE 1T T T T T T T T

ZONE 4 PRIORITY

OFF

ON

N/O COM N/CZONE 4 RELAY

DRYCONTACTS

1 2 3 4 1 2 3 4ZONE 1 ZONE 2


JUMPER3 & 4


123


1 2 3 4ZONE 3

MOTOR ENDSWITCH

4 WIRE ZONE VALVE(POWER OPEN,SELF CLOSING)

T STAT 1



ENDSWITCH

EXTRAEND

SWITCH

MAIN

24VAC

FA

CTO

RYIN

STA

LLED

TRA

NSF

ORM

ER

120 VACINPUT

WHITE

BLACK

ZVC 404FOUR ZONE ZONE VALVE CONTROL

WITH OPTIONAL PRIORITY

1 2 3 4ZONE 4

PRIORITYZONE


24 VAC

POWER IN

ZONE 2 ZONE 3 ZONE 4

MODENORMAL RESET

FUSE (3 A

MP M

AX

)

ZONE 1T T T T T T T T

ZONE 4 PRIORITY

OFF

ON

N/O COM N/CZONE 4 RELAY


DRYCONTACTS

1 2 3 4 1 2 3 4ZONE 1 ZONE 2


JUMPER3 & 4


123


1 2 3 4ZONE 3

MOTOR ENDSWITCH

4 WIRE ZONE VALVE(POWER OPEN,SELF CLOSING)

T STAT 1



ENDSWITCH

EXTRAEND

SWITCH

MAIN

24VAC

FA

CTO

RYIN

STA

LLED

TRA

NSF

ORM

ER

120 VACINPUT

WHITE

BLACK

FOUR ZONE ZONE VALVE CONTROLWITH OPTIONAL PRIORITY

BOILER

H

N


PRIORITYON

PRIORITYON

TO BOILERAQUASTAT RELAY

ZVC 404


1 2 3 4ZONE 4

PRIORITYZONE


T T T

T T T

28

2 EXP Zone Valve Controls Connected Together with System Pump


FUSE

7 A

MP

MA

X


ZONE 6

OFF

ON

1 2 3 4ZONE 1

1 2 3 4ZONE 2

1 2 3 4ZONE 3

1 2 3 4ZONE 4

1 2 3 4ZONE 5

1 2 3 4ZONE 6

MODENORMALRESET

PRIORITYZONE



123

JUMPER3 & 4

MOTOR ENDSWITCH


JUMPER3 & 4

1 2 3 4

MASTER

SLAVEPOWER

CONTROLS

PLUG-INCARDS PRIORITY

TAC

O, I

NC

ZVC

406-

EXP

T STAT 1

T STAT 2

T STAT 3

T STAT 4

T STAT 5

T STAT 6

POWER ON

VALVE 1

VALVE 2

VALVE 3

VALVE 4

VALVE 5

VALVE 6

SEE NOTE

EXPANSION

ZVC 406-EXPSIX ZONE ZONE VALVE CONTROL


24 VAC

POW

ER IN

24 VAC FA

CTO

RYIN

STA

LLED

TRA

NSF

ORM

ER

120 VACINPUT

WHITE

BLACK


N/O COMZONE 6 RELAY

N/CEND

SWITCHA

PUMP

ENDSWITCH

BBOILER

H

N

BOILER

24 VAC

FA

CTO

RYIN

STA

LLED

TRA

NSF

ORM

ER

120 VACINPUT

WHITE

BLACK


FUSE

7 A

MP

MA

X


ZONE 6

OFF

ON

1 2 3 4ZONE 1

1 2 3 4ZONE 2

1 2 3 4ZONE 3

1 2 3 4ZONE 4

1 2 3 4ZONE 5

MODENORMALRESET

2 WIREZONE VALVE

(NO END SWITCH)

TACO3 WIRE

ZONE VALVE

123

JUMPER3 & 4

MOTOR ENDSWITCH

4 WIREZONE VALVE


1 2 3 4

MASTER

SLAVEPOWER

CONTROLS


TAC

O, I

NC

ZVC

406-

EXP

T STAT 1

T STAT 2

T STAT 3

T STAT 4

T STAT 5

T STAT 6

POWER ON

VALVE 1

VALVE 2

VALVE 3

VALVE 4

VALVE 5

VALVE 6

EXPANSION



POW

ER IN 24 VAC

FA

CTO

RYIN

STA

LLED

TRA

NSF

ORM

ER

120 VACINPUT

WHITE

BLACK

DRYCONTACTS

N/O COMZONE 6 RELAY

N/CEND

SWITCHA

PUMP

ENDSWITCH

BBOILER

24 VAC

FA

CTO

RYIN

STA

LLED

TRA

NSF

ORM

ER

120 VACINPUT

WHITE

BLACK


SWITCH SETTINGS


SWITCH SETTINGSMaster/Slave: SlaveReset/Normal: Normal Priority Zone: Off

A AQUASTAT ONDHW HEATERTTT

T T T

120 VACINPUT

1 2 3 4ZONE 6

PRIORITYZONE


MASTER

SLAVE


SYSTEMPUMP

29

2 EXP Zone Valve Controls Connected Together with DHW Pump


FUSE

7 A

MP

MA

X


ZONE 6

OFF

ON

1 2 3 4ZONE 1

1 2 3 4ZONE 2

1 2 3 4ZONE 3

1 2 3 4ZONE 4

1 2 3 4ZONE 5

1 2 3 4ZONE 6

MODENORMALRESET

PRIORITYZONE



123

JUMPER3 & 4

MOTOR ENDSWITCH


JUMPER3 & 4

1 2 3 4

MASTER

SLAVEPOWER

CONTROLS


TAC

O, I

NC

ZVC

406-

EXP

T STAT 1

T STAT 2

T STAT 3

T STAT 4

T STAT 5

T STAT 6

POWER ON

VALVE 1

VALVE 2

VALVE 3

VALVE 4

VALVE 5

VALVE 6

SEE NOTE

EXPANSION



24 VAC

POW

ER IN

24 VAC FA

CTO

RYIN

STA

LLED

TRA

NSF

ORM

ER

120 VACINPUT

WHITE

BLACK


N/O COMZONE 6 RELAY

N/CEND

SWITCHA

PUMP

ENDSWITCH

BBOILER

H

N

BOILER

24 VAC

FA

CTO

RYIN

STA

LLED

TRA

NSF

ORM

ER

120 VACINPUT

WHITE

BLACK


FUSE

7 A

MP

MA

X


ZONE 6

OFF

ON

1 2 3 4ZONE 1

1 2 3 4ZONE 2

1 2 3 4ZONE 3

1 2 3 4ZONE 4

1 2 3 4ZONE 5

MODENORMALRESET

2 WIREZONE VALVE

(NO END SWITCH)

TACO3 WIRE

ZONE VALVE

123

JUMPER3 & 4

MOTOR ENDSWITCH

4 WIREZONE VALVE


1 2 3 4

MASTER

SLAVEPOWER

CONTROLS


TAC

O, I

NC

ZVC

406-

EXP

T STAT 1

T STAT 2

T STAT 3

T STAT 4

T STAT 5

T STAT 6

POWER ON

VALVE 1

VALVE 2

VALVE 3

VALVE 4

VALVE 5

VALVE 6

EXPANSION



POW

ER IN 24 VAC

FA

CTO

RYIN

STA

LLED

TRA

NSF

ORM

ER

120 VACINPUT

WHITE

BLACK

DRYCONTACTS

N/O COMZONE 6 RELAY

N/CEND

SWITCHA

PUMP

ENDSWITCH

BBOILER

24 VAC

FA

CTO

RYIN

STA

LLED

TRA

NSF

ORM

ER

120 VACINPUT

WHITE

BLACK


SWITCH SETTINGS




T T T

120 VACINPUT

1 2 3 4ZONE 6

PRIORITYZONE


MASTER

SLAVE

BOILER TURNS ON WHEN ANY ZONE VALVE OPENS.DHW PUMP TURNS ON ONLY WHEN PRIORITY ZONE CALLS.

DHWPUMP

2 EXP Zone Valve Controls Connected Together with System and DHW Pumps

30


FUSE

7 A

MP

MA

X


ZONE 6

OFF

ON

1 2 3 4ZONE 1

1 2 3 4ZONE 2

1 2 3 4ZONE 3

1 2 3 4ZONE 4

1 2 3 4ZONE 5

1 2 3 4ZONE 6

MODENORMALRESET

PRIORITYZONE



123

JUMPER3 & 4

MOTOR ENDSWITCH


JUMPER3 & 4

1 2 3 4

MASTER

SLAVEPOWER

CONTROLS


TAC

O, I

NC

ZVC

406-

EXP

T STAT 1

T STAT 2

T STAT 3

T STAT 4

T STAT 5

T STAT 6

POWER ON

VALVE 1

VALVE 2

VALVE 3

VALVE 4

VALVE 5

VALVE 6

SEE NOTE

EXPANSION



24 VACPO

WER

IN

24 VAC FA

CTO

RYIN

STA

LLED

TRA

NSF

ORM

ER

120 VACINPUT

WHITE

BLACK


N/O COMZONE 6 RELAY

N/CEND

SWITCHA

PUMP

ENDSWITCH

BBOILER

H

N

BOILER

24 VAC

FA

CTO

RYIN

STA

LLED

TRA

NSF

ORM

ER

120 VACINPUT

WHITE

BLACK


FUSE

7 A

MP

MA

X


ZONE 6

OFF

ON

1 2 3 4ZONE 1

1 2 3 4ZONE 2

1 2 3 4ZONE 3

1 2 3 4ZONE 4

1 2 3 4ZONE 5

MODENORMALRESET

2 WIREZONE VALVE

(NO END SWITCH)

TACO3 WIRE

ZONE VALVE

123

JUMPER3 & 4

MOTOR ENDSWITCH

4 WIREZONE VALVE


1 2 3 4

MASTER

SLAVEPOWER

CONTROLS


TAC

O, I

NC

ZVC

406-

EXP

T STAT 1

T STAT 2

T STAT 3

T STAT 4

T STAT 5

T STAT 6

POWER ON

VALVE 1

VALVE 2

VALVE 3

VALVE 4

VALVE 5

VALVE 6

EXPANSION



POW

ER IN 24 VAC

FA

CTO

RYIN

STA

LLED

TRA

NSF

ORM

ER

120 VACINPUT

WHITE

BLACK

DRYCONTACTS

N/O COMZONE 6 RELAY

N/CEND

SWITCHA

PUMP

ENDSWITCH

BBOILER

24 VAC

FA

CTO

RYIN

STA

LLED

TRA

NSF

ORM

ER

120 VACINPUT

WHITE

BLACK


SWITCH SETTINGS




T T T

120 VACINPUT

1 2 3 4ZONE 6

PRIORITYZONE


MASTER

SLAVE

SYSTEM PUMP AND BOILER TURN ON WHEN ANY ZONE VALVE OPENS.DHW PUMP TURNS ON ONLY WHEN PRIORITY ZONE CALLS.

DHWPUMP

SYSTEMPUMP

31

2 EXP Zone Valve Controls Connected Together with System, DHW and Secondary Pumps


FUSE

7 A

MP

MA

X


ZONE 6

OFF

ON

1 2 3 4ZONE 1

1 2 3 4ZONE 2

1 2 3 4ZONE 3

1 2 3 4ZONE 4

1 2 3 4ZONE 5

1 2 3 4ZONE 6

MODENORMALRESET

PRIORITYZONE



123

JUMPER3 & 4

MOTOR ENDSWITCH


JUMPER3 & 4

1 2 3 4

MASTER

SLAVEPOWER

CONTROLS


TAC

O, I

NC

ZVC

406-

EXP

T STAT 1

T STAT 2

T STAT 3

T STAT 4

T STAT 5

T STAT 6

POWER ON

VALVE 1

VALVE 2

VALVE 3

VALVE 4

VALVE 5

VALVE 6

SEE NOTE

EXPANSION



24 VAC

POW

ER IN

24 VAC FA

CTO

RYIN

STA

LLED

TRA

NSF

ORM

ER

120 VACINPUT

WHITE

BLACK


N/O COMZONE 6 RELAY

N/CEND

SWITCHA

PUMP

ENDSWITCH

BBOILER

H

N

BOILER

24 VAC

FA

CTO

RYIN

STA

LLED

TRA

NSF

ORM

ER

120 VACINPUT

WHITE

BLACK


FUSE

7 A

MP

MA

X


ZONE 6

OFF

ON

1 2 3 4ZONE 1

1 2 3 4ZONE 2

1 2 3 4ZONE 3

1 2 3 4ZONE 4

1 2 3 4ZONE 5

MODENORMALRESET

2 WIREZONE VALVE

(NO END SWITCH)

TACO3 WIRE

ZONE VALVE

123

JUMPER3 & 4

MOTOR ENDSWITCH

4 WIREZONE VALVE


1 2 3 4

MASTER

SLAVEPOWER

CONTROLS


TAC

O, I

NC

ZVC

406-

EXP

T STAT 1

T STAT 2

T STAT 3

T STAT 4

T STAT 5

T STAT 6

POWER ON

VALVE 1

VALVE 2

VALVE 3

VALVE 4

VALVE 5

VALVE 6

EXPANSION



POW

ER IN 24 VAC

FA

CTO

RYIN

STA

LLED

TRA

NSF

ORM

ER

120 VACINPUT

WHITE

BLACK

DRYCONTACTS

N/O COMZONE 6 RELAY

N/CEND

SWITCHA

PUMP

ENDSWITCH

BBOILER

24 VAC

FA

CTO

RYIN

STA

LLED

TRA

NSF

ORM

ER

120 VACINPUT

WHITE

BLACK


SWITCH SETTINGS




T T T

120 VACINPUT

1 2 3 4ZONE 6

PRIORITYZONE


MASTER

SLAVE

SYSTEM PUMP AND BOILER TURN ON WHEN ANY ZONE VALVE OPENS.DHW PUMP TURNS ON ONLY WHEN PRIORITY ZONE CALLS.SECONDARY PUMP TURNS ON WHEN ANY ZONE CALLS, EXCEPT PRIORITY ZONE.

DHWPUMP

SYSTEMPUMP SECONDARY

PUMP

32 PC700 Boiler Reset Control Connected To EXP Zone Valve Control


FUSE

7 A

MP

MA

X


ZONE 6

OFF

ON

1 2 3 4ZONE 1

1 2 3 4ZONE 2

1 2 3 4ZONE 3

1 2 3 4ZONE 4

1 2 3 4ZONE 5

1 2 3 4ZONE 6

MODENORMALRESET

INDIRECTWATER HEATERAQUASTATOR THERMOSTAT

PRIORITYZONE



123

JUMPER3 & 4

MOTOR ENDSWITCH



JUMPER3 & 4

1 2 3 4

MASTER

SLAVEPOWER

CONTROLS


TAC

O, I

NC

ZVC

406-

EXP

T STAT 1

T STAT 2

T STAT 3

T STAT 4

T STAT 5

T STAT 6

POWER ON

VALVE 1

VALVE 2

VALVE 3

VALVE 4

VALVE 5

VALVE 6

SEE NOTE

EXPANSION



24 VAC

POW

ER IN

24 VAC

FA

CTO

RYIN

STA

LLED

TRA

NSF

ORM

ER

120 VACINPUT

WHITE

BLACK


DRYCONTACTS

N/O COMZONE 6 RELAY

N/CEND

SWITCHA

PUMP

ENDSWITCH

BBOILER

ZONECONTROL

BOILSEN

OUTSEN

BOILER SENSOR

OUTDOORSENSOR

PC700

SYSTEMCIRCULATOR

H

N

BOILER

24 VAC

FA

CTO

RYIN

STA

LLED

TRA

NSF

ORM

ER

120 VACINPUT

WHITE

BLACK


SWITCH SETTINGSMaster/Slave: MasterReset/Normal: ResetPriority Zone: On or Off

SYSTEM CIRCULATOR AND BOILER TURN ON WHEN ANY ZONE VALVE OPENS.

T T T

33

PC702 2–Stage Boiler Reset Control Connected To EXP Zone Valve Control


FUSE

7 A

MP

MA

X


ZONE 6

OFF

ON

1 2 3 4ZONE 1

1 2 3 4ZONE 2

1 2 3 4ZONE 3

1 2 3 4ZONE 4

1 2 3 4ZONE 5

1 2 3 4ZONE 6

MODENORMALRESET


PRIORITYZONE



123

JUMPER3 & 4

MOTOR ENDSWITCH



JUMPER3 & 4

1 2 3 4

MASTER

SLAVEPOWER

CONTROLS


TAC

O, I

NC

ZVC

406-

EXP

T STAT 1

T STAT 2

T STAT 3

T STAT 4

T STAT 5

T STAT 6

POWER ON

VALVE 1

VALVE 2

VALVE 3

VALVE 4

VALVE 5

VALVE 6

SEE NOTE

EXPANSION



24 VAC

POW

ER IN

24

VAC

FA

CTO

RYIN

STA

LLED

TRA

NSF

ORM

ER

120 VACINPUT

WHITE

BLACK

N/O COMZONE 6 RELAY

N/CEND

SWITCHA

PUMP

ENDSWITCH

BBOILER

SYSTEMCIRCULATOR

H

N

BOILER#2

ZONECONTROL

BOILSEN

OUTSEN

BOILER SENSOR

OUTDOORSENSOR

PC702

STAGE1

STAGE2

BOILER#1

DHWDEMAND

24 VAC

FA

CTO

RYIN

STA

LLED

TRA

NSF

ORM

ER

120 VACINPUT

WHITE

BLACK


SWITCH SETTINGSMaster/Slave: MasterReset/Normal: NormalPriority Zone: On or Off


SYSTEM CIRCULATOR AND BOILER TURN ON WHEN ANY ZONE VALVE OPENS.DHW CIRCULATOR TURNS ON ONLY WHEN PRIORITY ZONE CALLS.

DHWCIRCULATOR

T T T

34 PC705 Variable Speed Pump Injection Control Connected To EXP Zone Valve Control


FUSE

7 A

MP

MA

X


ZONE 6

OFF

ON

1 2 3 4ZONE 1

1 2 3 4ZONE 2

1 2 3 4ZONE 3

1 2 3 4ZONE 4

1 2 3 4ZONE 5

1 2 3 4ZONE 6

MODENORMALRESET


PRIORITYZONE



123

JUMPER3 & 4

MOTOR ENDSWITCH



JUMPER3 & 4

1 2 3 4

MASTER

SLAVEPOWER

CONTROLS


TAC

O, I

NC

ZVC

406-

EXP

T STAT 1

T STAT 2

T STAT 3

T STAT 4

T STAT 5

T STAT 6

POWER ON

VALVE 1

VALVE 2

VALVE 3

VALVE 4

VALVE 5

VALVE 6

SEE NOTE

EXPANSION



24 VAC

POW

ER IN

24 VAC

FA

CTO

RYIN

STA

LLED

TRA

NSF

ORM

ER

120 VACINPUT

WHITE

BLACK


DRYCONTACTS

N/O COMZONE 6 RELAY

N/CEND

SWITCHA

PUMP

ENDSWITCH

BBOILER

H

N

BOILER

24 VAC

FA

CTO

RYIN

STA

LLED

TRA

NSF

ORM

ER

120 VACINPUT

WHITE

BLACK

ZONECONTROL

BOILSEN

OUTSEN

BOILER SENSOR

OUTDOORSENSOR

PC705-2

SUPSEN

SUPPLY SENSOR

INJECTIONCIRCULATOR

SYSTEMCIRCULATOR

(SEE NOTE B ON PAGE 16)

BLACK

BLUE

RED

GREEN/GROUND


SWITCH SETTINGSMaster/Slave: MasterReset/Normal: ResetPriority Zone: On or Off


SYSTEM CIRCULATOR AND BOILER TURN ON WHEN ANY ZONE VALVE OPENS.

T T T

35

PC700 Boiler Reset Control Connected To 2 EXP Zone Valve Controls


FUSE

7 A

MP

MA

X


ZONE 6

OFF

ON

1 2 3 4ZONE 1

1 2 3 4ZONE 2

1 2 3 4ZONE 3

1 2 3 4ZONE 4

1 2 3 4ZONE 5

1 2 3 4ZONE 6

MODENORMALRESET

PRIORITYZONE



123

JUMPER3 & 4

MOTOR ENDSWITCH


JUMPER3 & 4

1 2 3 4

MASTER

SLAVEPOWER

CONTROLS


TAC

O, I

NC

ZVC

406-

EXP

T STAT 1

T STAT 2

T STAT 3

T STAT 4

T STAT 5

T STAT 6

POWER ON

VALVE 1

VALVE 2

VALVE 3

VALVE 4

VALVE 5

VALVE 6

SEE NOTE

EXPANSION



POW

ER IN

24 VAC

FA

CTO

RYIN

STA

LLED

TRA

NSF

ORM

ER

120 VACINPUT

WHITE

BLACK


N/O COMZONE 6 RELAY

N/CEND

SWITCHA

PUMP

ENDSWITCH

BBOILER

ZONECONTROL

BOILSEN

OUTSEN

BOILER SENSOR

OUTDOORSENSOR

PC700

SYSTEMCIRCULATOR

H

N

BOILER


24 VAC

FA

CTO

RYIN

STA

LLED

TRA

NSF

ORM

ER

120 VACINPUT

WHITE

BLACK


FUSE

7 A

MP

MA

X


ZONE 6

OFF

ON

1 2 3 4ZONE 1

1 2 3 4ZONE 2

1 2 3 4ZONE 3

1 2 3 4ZONE 4

1 2 3 4ZONE 5

1 2 3 4ZONE 6

MODENORMALRESET

PRIORITYZONE



123

JUMPER3 & 4

MOTOR ENDSWITCH


JUMPER3 & 4

1 2 3 4

MASTER

SLAVEPOWER

CONTROLS


TAC

O, I

NC

ZVC

406-

EXP

T STAT 1

T STAT 2

T STAT 3

T STAT 4

T STAT 5

T STAT 6

POWER ON

VALVE 1

VALVE 2

VALVE 3

VALVE 4

VALVE 5

VALVE 6

SEE NOTE

EXPANSION



POW

ER IN

24 VAC

FA

CTO

RYIN

STA

LLED

TRA

NSF

ORM

ER

120 VACINPUT

WHITE

BLACK

DRYCONTACTS

N/O COMZONE 6 RELAY

N/CEND

SWITCHA

PUMP

ENDSWITCH

BBOILER

24 VAC

FA

CTO

RYIN

STA

LLED

TRA

NSF

ORM

ER

120 VACINPUT

WHITE

BLACK

SWITCH SETTINGSMaster/Slave: MasterReset/Normal: Reset Priority Zone: On or Off


MASTER

SLAVE

INDIRECT WATER HEATERAQUASTAT OR THERMOSTAT

24 VAC

TTT

24 VAC

TTT


DHWCIRCULATOR

36

PC702 2–Stage Boiler Reset Control Connected To 2 EXP Zone Valve Controls


FUSE

7 A

MP

MA

X


ZONE 6

OFF

ON

1 2 3 4ZONE 1

1 2 3 4ZONE 2

1 2 3 4ZONE 3

1 2 3 4ZONE 4

1 2 3 4ZONE 5

1 2 3 4ZONE 6

MODENORMALRESET

PRIORITYZONE



123

JUMPER3 & 4

MOTOR ENDSWITCH


JUMPER3 & 4

1 2 3 4

MASTER

SLAVEPOWER

CONTROLS


TAC

O, I

NC

ZVC

406-

EXP

T STAT 1

T STAT 2

T STAT 3

T STAT 4

T STAT 5

T STAT 6

POWER ON

VALVE 1

VALVE 2

VALVE 3

VALVE 4

VALVE 5

VALVE 6

SEE NOTE

EXPANSION



POW

ER IN

FA

CTO

RYIN

STA

LLED

TRA

NSF

ORM

ER

120 VACINPUT

WHITE

BLACKN/O COM

ZONE 6 RELAYN/C

ENDSWITCH

APUMP

ENDSWITCH

BBOILER

SYSTEMCIRCULATOR

H

N

24 VAC

FA

CTO

RYIN

STA

LLED

TRA

NSF

ORM

ER

120 VACINPUT

WHITE

BLACK


FUSE

7 A

MP

MA

X


ZONE 6

OFF

ON

1 2 3 4ZONE 1

1 2 3 4ZONE 2

1 2 3 4ZONE 3

1 2 3 4ZONE 4

1 2 3 4ZONE 5

1 2 3 4ZONE 6

MODENORMALRESET

PRIORITYZONE



123

JUMPER3 & 4

MOTOR ENDSWITCH


JUMPER3 & 4

1 2 3 4

MASTER

SLAVEPOWER

CONTROLS


TAC

O, I

NC

ZVC

406-

EXP

T STAT 1

T STAT 2

T STAT 3

T STAT 4

T STAT 5

T STAT 6

POWER ON

VALVE 1

VALVE 2

VALVE 3

VALVE 4

VALVE 5

VALVE 6

SEE NOTE

EXPANSION



POW

ER IN

24

VAC

FA

CTO

RYIN

STA

LLED

TRA

NSF

ORM

ER

120 VACINPUT

WHITE

BLACK

DRYCONTACTS

N/O COMZONE 6 RELAY

N/CEND

SWITCHA

PUMP

ENDSWITCH

BBOILER

24 VAC

FA

CTO

RYIN

STA

LLED

TRA

NSF

ORM

ER

120 VACINPUT

WHITE

BLACK

BOILER#2

ZONECONTROL

BOILSEN

OUTSEN

BOILER SENSOR

OUTDOORSENSOR

PC702

STAGE1

STAGE2

BOILER#1

DHWDEMAND

24

VAC


SWITCH SETTINGSMaster/Slave: MasterReset/Normal: Normal Priority Zone: On or Off

SWITCH SETTINGSMaster/Slave: SlaveReset/Normal: NormalPriority Zone: Off


MASTER

SLAVE


24 VAC

TTT

24 VAC

TTT


DHWCIRCULATOR

37

PC705 Variable Speed Pump Injection Control Connected To 2 EXP Zone Valve Controls


FUSE

7 A

MP

MA

X


ZONE 6

OFF

ON

1 2 3 4ZONE 1

1 2 3 4ZONE 2

1 2 3 4ZONE 3

1 2 3 4ZONE 4

1 2 3 4ZONE 5

1 2 3 4ZONE 6

MODENORMALRESET

PRIORITYZONE



123

JUMPER3 & 4

MOTOR ENDSWITCH


JUMPER3 & 4

1 2 3 4

MASTER

SLAVEPOWER

CONTROLS


TAC

O, I

NC

ZVC

406-

EXP

T STAT 1

T STAT 2

T STAT 3

T STAT 4

T STAT 5

T STAT 6

POWER ON

VALVE 1

VALVE 2

VALVE 3

VALVE 4

VALVE 5

VALVE 6

SEE NOTE

EXPANSION



POW

ER IN

24 VAC

FA

CTO

RYIN

STA

LLED

TRA

NSF

ORM

ERWHITE

BLACK


DRYCONTACTS

N/O COMZONE 6 RELAY

N/CEND

SWITCHA

PUMP

ENDSWITCH

BBOILER

H

N

BOILER


24 VAC

FA

CTO

RYIN

STA

LLED

TRA

NSF

ORM

ER

120 VACINPUT

WHITE

BLACK

ZONECONTROL

BOILSEN

OUTSEN

BOILER SENSOR

OUTDOORSENSOR

PC705-2

SUPSEN

SUPPLY SENSOR

INJECTIONCIRCULATOR

SYSTEMCIRCULATOR

BLACK

BLUE

RED

GREEN/GROUND


FUSE

7 A

MP

MA

X


ZONE 6

OFF

ON

1 2 3 4ZONE 1

1 2 3 4ZONE 2

1 2 3 4ZONE 3

1 2 3 4ZONE 4

1 2 3 4ZONE 5

1 2 3 4ZONE 6

MODENORMALRESET

PRIORITYZONE



123

JUMPER3 & 4

MOTOR ENDSWITCH


JUMPER3 & 4

1 2 3 4

MASTER

SLAVEPOWER

CONTROLS


TAC

O, I

NC

ZVC

406-

EXP

T STAT 1

T STAT 2

T STAT 3

T STAT 4

T STAT 5

T STAT 6

POWER ON

VALVE 1

VALVE 2

VALVE 3

VALVE 4

VALVE 5

VALVE 6

SEE NOTE

EXPANSION



POW

ER IN

24 VAC

FA

CTO

RYIN

STA

LLED

TRA

NSF

ORM

ERWHITE

BLACK

DRYCONTACTS

N/O COMZONE 6 RELAY

N/CEND

SWITCHA

PUMP

ENDSWITCH

BBOILER

24 VAC

FA

CTO

RYIN

STA

LLED

TRA

NSF

ORM

ER

120 VACINPUT

WHITE

BLACK

SWITCH SETTINGSMaster/Slave: Master Reset/Normal: ResetPriority Zone: On or Off

SWITCH SETTINGSMaster/Slave: SlaveReset/Normal: NormalPriority Zone: Off


MASTER

SLAVE


24 VAC

TTT

24 VAC

TTT


38

PC700 and PC705 Connected To 2 EXP Zone Valve Controls


FUSE

7 A

MP

MA

X


ZONE 6

OFF

ON

1 2 3 4ZONE 1

1 2 3 4ZONE 2

1 2 3 4ZONE 3

1 2 3 4ZONE 4

1 2 3 4ZONE 5

1 2 3 4ZONE 6

MODENORMALRESET

PRIORITYZONE



123

JUMPER3 & 4

MOTOR ENDSWITCH


JUMPER3 & 4

1 2 3 4

MASTER

SLAVEPOWER

CONTROLS


TAC

O, I

NC

ZVC

406-

EXP

T STAT 1

T STAT 2

T STAT 3

T STAT 4

T STAT 5

T STAT 6

POWER ON

VALVE 1

VALVE 2

VALVE 3

VALVE 4

VALVE 5

VALVE 6

SEE NOTE

EXPANSION



POW

ER IN

24 VAC

FA

CTO

RYIN

STA

LLED

TRA

NSF

ORM

ER

120 VACINPUT

WHITE

BLACK


N/O COMZONE 6 RELAY

N/CEND

SWITCHA

PUMP

ENDSWITCH

BBOILER

ZONECONTROL

BOILSEN

OUTSEN

BOILER SENSOR

OUTDOORSENSOR

PC700

SYSTEMCIRCULATOR

H

N

BOILER


24 VAC

FA

CTO

RYIN

STA

LLED

TRA

NSF

ORM

ER

120 VACINPUT

WHITE

BLACK


FUSE

7 A

MP

MA

X


ZONE 6

OFF

ON

1 2 3 4ZONE 1

1 2 3 4ZONE 2

1 2 3 4ZONE 3

1 2 3 4ZONE 4

1 2 3 4ZONE 5

1 2 3 4ZONE 6

MODENORMALRESET

PRIORITYZONE



123

JUMPER3 & 4

MOTOR ENDSWITCH


JUMPER3 & 4

1 2 3 4

MASTER

SLAVEPOWER

CONTROLS


TAC

O, I

NC

ZVC

406-

EXP

T STAT 1

T STAT 2

T STAT 3

T STAT 4

T STAT 5

T STAT 6

POWER ON

VALVE 1

VALVE 2

VALVE 3

VALVE 4

VALVE 5

VALVE 6

SEE NOTE

EXPANSION



POW

ER IN

24 VAC

FA

CTO

RYIN

STA

LLED

TRA

NSF

ORM

ER

120 VACINPUT

WHITE

BLACK

DRYCONTACTS

N/O COMZONE 6 RELAY

N/CEND

SWITCHA

PUMP

ENDSWITCH

BBOILER

24 VAC

FA

CTO

RYIN

STA

LLED

TRA

NSF

ORM

ER

120 VACINPUT

WHITE

BLACK

ZONECONTROL

BOILSEN

OUTSEN

BOILER SENSOR

OUTDOORSENSOR

PC705-2

SUPSEN

SUPPLY SENSOR

INJECTIONCIRCULATOR

SYSTEMCIRCULATOR

BLACK

BLUE

RED

GREEN/GROUND

SWITCH SETTINGSMaster/Slave: MasterReset/Normal: Reset Priority Zone: On or Off


MASTER

SLAVE


24 VAC

TTT

24 VAC

TTT


DHWCIRCULATOR


39

PC702 and PC705 Connected To 2 EXP Zone Valve Controls


FUSE

7 A

MP

MA

X


ZONE 6

OFF

ON

1 2 3 4ZONE 1

1 2 3 4ZONE 2

1 2 3 4ZONE 3

1 2 3 4ZONE 4

1 2 3 4ZONE 5

1 2 3 4ZONE 6

MODENORMALRESET

PRIORITYZONE



123

JUMPER3 & 4

MOTOR ENDSWITCH


JUMPER3 & 4

1 2 3 4

MASTER

SLAVEPOWER

CONTROLS


TAC

O, I

NC

ZVC

406-

EXP

T STAT 1

T STAT 2

T STAT 3

T STAT 4

T STAT 5

T STAT 6

POWER ON

VALVE 1

VALVE 2

VALVE 3

VALVE 4

VALVE 5

VALVE 6

SEE NOTE

EXPANSION



POW

ER IN

FA

CTO

RYIN

STA

LLED

TRA

NSF

ORM

ER

120 VACINPUT

WHITE

BLACKN/O COM

ZONE 6 RELAYN/C

ENDSWITCH

APUMP

ENDSWITCH

BBOILER

SYSTEMCIRCULATOR

H

N

24 VAC

FA

CTO

RYIN

STA

LLED

TRA

NSF

ORM

ER

120 VACINPUT

WHITE

BLACK

BOILER#2

ZONECONTROL

BOILSEN

OUTSEN

BOILER SENSOR

OUTDOORSENSOR

PC702

STAGE1

STAGE2

BOILER#1

DHWDEMAND

24

VAC


FUSE

7 A

MP

MA

X


ZONE 6

OFF

ON

1 2 3 4ZONE 1

1 2 3 4ZONE 2

1 2 3 4ZONE 3

1 2 3 4ZONE 4

1 2 3 4ZONE 5

1 2 3 4ZONE 6

MODENORMALRESET

PRIORITYZONE



123

JUMPER3 & 4

MOTOR ENDSWITCH


JUMPER3 & 4

1 2 3 4

MASTER

SLAVEPOWER

CONTROLS


TAC

O, I

NC

ZVC

406-

EXP

T STAT 1

T STAT 2

T STAT 3

T STAT 4

T STAT 5

T STAT 6

POWER ON

VALVE 1

VALVE 2

VALVE 3

VALVE 4

VALVE 5

VALVE 6

SEE NOTE

EXPANSION



POW

ER IN

24 VAC

FA

CTO

RYIN

STA

LLED

TRA

NSF

ORM

ER

120 VACINPUT

WHITE

BLACK

DRYCONTACTS

N/O COMZONE 6 RELAY

N/CEND

SWITCHA

PUMP

ENDSWITCH

BBOILER

24 VAC

FA

CTO

RYIN

STA

LLED

TRA

NSF

ORM

ER

120 VACINPUT

WHITE

BLACK

ZONECONTROL

BOILSEN

OUTSEN

BOILER SENSOR

OUTDOORSENSOR

PC705-2

SUPSEN

SUPPLY SENSOR

INJECTIONCIRCULATOR

SYSTEMCIRCULATOR

BLACK

BLUE

RED

GREEN/GROUND


SWITCH SETTINGSMaster/Slave: MasterReset/Normal: Normal Priority Zone: On or Off



MASTER

SLAVE


24 VAC

TTT

24 VAC

TTT


DHWCIRCULATOR


40

HAFC101 with 1 Speed Air Handler

HAFC 101 WITH 1 SPEED AIR HANDLER(Both HFC 101 and HAFC 201 are

capable of 1 and 2 speed applications.)

THERMOSTAT

Optional Power Wireto Thermostatthat Requires 24VAC

To: Aquastat onReturn Line ofHydro Coil

Dry Contacts To:“T T” on Boileror Switching Relay

Power OnCall for HeatFan, CoolingFan, Heating

OutdoorCondenserUnit

T T

BOILER AIR HANDLER

G GX X C R Y

C R GY TWTHERMOSTAT AQUASTAT

HAFC101HYDRO AIR FAN CONTROL

Jumper

M

FanRelay

Line

24 V

AC

LOW HIGH

T

41




THERMOSTAT



Dry Contacts To:“T T” on Boileror Switching Relay



T T

BOILER AIR HANDLER

G GX X C R Y



M

Low

Hig

h

Line

24 V

AC

Fan

Rela

ys

LOW HIGH

T

42


M

FanRelay

Line

24 V

AC

THERMOSTAT


To: OptionalAquastat onReturn Line ofHydro Coil



T T

BOILER AIR HANDLER

G GX X C R Y

C R GYWTHERMOSTAT AQUASTATS


TTWATER COIL FREEZE PR

To: Optional Aquastator Thermostat to senselow ambienttemperature

Hot

Neutral

Circulator

XXPUMP

5 AMP 1/6 HP RATEDDRY CONTACTS

1 MIN

ON

DELA

Y - FAN

3 MIN

ON

DELA

Y - FAN

2 MIN

@ 24 H

R - PUM

P30 SEC

@ 2 W

K - PUM

P

OFF O

N

Jumper

(or to “T T” onswitching relay)



Dry Contacts To:“T T” on Boileror SwitchingRelay

LOW HIGH

T

NOTE: For 4 minuteon delay of Heating Fan,switch 1 and 3 MIN ONDELAY to ON position.

43


THERMOSTAT





T T

BOILER AIR HANDLER

G GX X C R Y





Hot

Neutral

Circulator

XXPUMP


1 MIN

ON

DELA

Y - FAN

3 MIN

ON

DELA

Y - FAN

2 MIN

@ 24 H

R - PUM

P30 SEC

@ 2 W

K - PUM

P

OFF O

N




“T T” on Boileror SwitchingRelay M

Low

Hig

h

Line

24 V

AC

Fan

Rela

ys

LOW HIGH

T

NOTE: For 4 minuteon delay of Heating Fan,switch 1 and 3 MIN ONDELAY to ON position.

44 Multiple HAFC’s and Switching Relay


ZONE 4

ONOFF

PRIORITY

120V RELAY

FUSE 1 AMP

24 VACPOWER


120 VAC INPUT

TO: "TT" ON BOILER


X XEND

SWITCH


INPUT

ZONE 2

POWERZONE 1

ZONE 3ZONE 4

JUMPER

BOILER

H

N

SR 504

DHWHEATER

AQUASTAT

THERMOSTAT

POWER PMCALL FOR HEATFAN, COOLINGFAN, HEATING

OUTDOORCONDENSER

UNIT

T T

BOILER AIR HANDLER

G GX X C R Y



M

Low

Hig

h

Line

24 V

AC

Fan

Rela

ys

LOW HIGH

THERMOSTAT

T T

BOILER AIR HANDLER

G GX X C R Y



M

Low

Hig

h

Line

24 V

AC

Fan

Rela

ys

LOW HIGH

2 SPEED AIR HANDLER

THERMOSTAT

T T

BOILER AIR HANDLER

G GX X C R Y



M

Low

Hig

h

Line

24 V

AC

Fan

Rela

ys

LOW HIGH

OPTIONAL POWER WIRETO THERMOSTAT

THAT REQUIRES 24VAC


THAT REQUIRES 24VAC


THAT REQUIRES 24VAC

TO: AQUASTAT ONRETURN LINE OF

HYDRO COIL


HYDRO COIL


HYDRO COIL

OUTDOORCONDENSER

UNIT

OUTDOORCONDENSER

UNIT

2 SPEED AIR HANDLER2 SPEED AIR HANDLER



T T T

45

3 Wire Thermostat Connected to TACO Switching Relay

BOILER

H

N

TT

T


ZONE 4

ONOFF

PRIORITY

120V RELAY

FUSE 1 AMP

24 VACPOWER


120 VAC INPUT

TO: "TT" ON BOILER


X XEND

SWITCH


INPUT

SR 504

ZONE 2

POWERZONE 1

ZONE 3ZONE 4

JUMPER

T

W R

COM

3 WIRETHERMOSTAT

46 3 Wire Thermostat Connected to TACO Zone Valve Control

ZONE 1 ZONE 2 ZONE 3 ZONE 4 ZONE 5T T T T T T T T T T

ZVC 405



JUMPER3 & 4

3 WIRE ZONE VALVE(TACO TYPE)

123

MOTOR ENDSWITCH


4 WIRE ZONE VALVE(HONEYWELL TYPE)

T STAT 1

VALVE 1

T STAT 2




24 VAC

FA

CTO

RYIN

STA

LLED

TRA

NSF

ORM

ER

120 VACINPUT

WHITE

BLACK

ENDSWITCH

TT

TO T&T ON BOILEROR PUMP RELAY

POW

ER IN

24 VAC

FA

CTO

RYIN

STA

LLED

TRA

NSF

ORM

ER

120 VACINPUT

WHITE

BLACK

BLA

CK

RED

BLA

CK

RED

WH

RED

CO

MM

ON

W RC

T T T

47

White-Rogers 1361 Hydronic Zone Valve with TACO Zone Valve Control


ZVC 405


WHITE-ROGERS 1361HYDRONIC ZONE VALVE

3


123

MOTOR ENDSWITCH



T STAT 1

VALVE 1

T STAT 2




24 VAC

FA

CTO

RYIN

STA

LLED

TRA

NSF

ORM

ER

120 VACINPUT

WHITE

BLACK

ENDSWITCH

TT


POW

ER IN

24 VAC

FA

CTO

RYIN

STA

LLED

TRA

NSF

ORM

ER

120 VACINPUT

WHITE

BLACK

BLA

CK

RED

BLA

CK

RED

RIGHT TTSCREW

(SEE NOTE)

412

NOTE: WHEN USING ZVC 404 OR ZVC 406,CONNECT WIRE #2 OF ZONE VALVETO PRIORITY ZONE RIGHT TT SCREW

T T T

3

TERMINAL ASSIGNMENTZONE VALVE CONTROL

1 123

TT (Rt)

4 2

48 Honeywell VC 40 & 80 (spdt) Hydronic Zone Valve with TACO Zone Valve Control


ZVC 405


HONEYWELL VC (SPST)HYDRONIC ZONE VALVE

SERIES 40 & 80

1


123

MOTOR ENDSWITCH



T STAT 1

VALVE 1

T STAT 2




24 VAC

FA

CTO

RYIN

STA

LLED

TRA

NSF

ORM

ER

120 VACINPUT

WHITE

BLACK

ENDSWITCH

TT


POW

ER IN

24 VAC

FA

CTO

RYIN

STA

LLED

TRA

NSF

ORM

ER

120 VACINPUT

WHITE

BLACK

BLA

CK

RED

BLA

CK

RED

RIGHT TTSCREW

(SEE NOTE)

4623

NOTE: WHEN USING ZVC 404 OR ZVC 406,CONNECT WIRE #3 OF ZONE VALVETO PRIORITY ZONE RIGHT TT SCREW

T T T

TERMINAL ASSIGNMENTZONE VALVE CONTROLORANGE 1 3BLUE 2BROWN 3

1

GRAY 4 4BLACK 6 2

TT (Rt)

570 Zone Valve to Switching Relay


24 VACPOWER

FUSE 1 AMP

120 VOLTCIRCULATORS


N P ZC H X ZR1

X2


ZONE 2

POWERZONE 1

ZONE 3

TO: 120 VAC POWER (NEUTRAL)

TO: 120 VAC POWER (HOT)



T

1

2

3

24 VACTRANSFORMER

THERMOSTAT

49

Zone Valve Control with 1 Low Temperature Zone Using Priority Zoning Circulator

24 VAC


MODENORMAL RESET

FUSE (7 A

MP M

AX

)


ZONE 6 PRIORITY

OFF

ON

ZVC 406


JUMPER3 & 4

TACO3 WIRE

ZONE VALVE

123

ENDSWITCH


4 WIREZONE VALVE

(POWER OPEN,SELF CLOSING)

T STAT 1

VALVE 1

T STAT 2




24 VAC

FA

CTO

RYIN

STA

LLED

TRA

NSF

ORM

ER

120 VACINPUT

WHITE

BLACK

POW

ER IN

24 VAC

FA

CTO

RYIN

STA

LLED

TRA

NSF

ORM

ER

120 VACINPUT

WHITE

BLACK

N/O COMZONE 6 RELAY

DRYCONTACTS

ENDSWITCH

EXTRAEND

SWITCH

MAIN N/C


BOILER

H

N

SYSTEMPUMP



1 2 3 4ZONE 6

PRIORITYZONE


Note: When a circulator isused on the priority zoneinstead of a zone valve,jumper 3 and 4 of thepriority zone.

T T T

MOTORMOTOR ENDSWITCH

4 WIREZONE VALVE

(POWER OPEN,SELF CLOSING)

ONOFF

PRIORITYPOWER IN

120 VAC INPUT

THERMOSTAT BOILER PRIORITY



PRIORITYON

50

51

TACO SR501 REPLACEMNENT CROSS-REFERENCE

MANUFACTURER MODEL CONNECTIONS

Taco SR501 H N 3 4 NO 4 NC 5 6 NO 6 NC R/T W/T C

Argo AR821 1 2 3 4 5 6 T

AR822 L1 L2 3 4 NO 4 NC 5 6 NO 6 NC R/T G/T C

Colombus MR10 L1 L2 3 4 NO 4 NC 5 6 NO 6 NC R/T G/T C

Erie SR100 L1 L2 3 4 NO 4 NC 5 6 NO 6 NC R/T G/T C

Honeywell RA89A 1 2 3 4 T T

RA832A 1 2 3 4 X X T T

R845A 1 2 3 4 5 6 T T

White-Rogers 889-189 1 2 3 4 T T

829-845 1 2 3 4 5 6 T T

Features:External Indicator LightsUniversal ReplaceabilitySnap-in PC BoardSimplified WiringFully Enclosed Snap-Out Relays100% Factory TestedContractor Friendly PC Board LayoutUniversal Thermostat CompatibilityUL ApprovedExtended 3 Year WarrantyMade in the USA

Operation:Connect a thermostat to the “T T” terminals onthe switching relay. When the thermostat calls forheat, the relay is energized and power is given to thecirculator.

Power Input:Connect 120 volt ac power to terminals N and H.

Jumper Placement:The jumper is factory installed between terminals Hand 3 to switch power on terminals 4 n/o and 4 n/c.

External Diagnostics:The External lights show full functionality of theswitching relay. The green light should always be on,indicating that power is connected. When the ther-mostat calls for heat, both the appropriate circulatorand red indicating light is energized.

The Taco Connection:Combine the reliability of the Taco Zone Valves,Priority Zoning Circulators, Thermostats, and the “00”family of circulators with the advanced features of theTaco Zone Controls to achieve total system integra-tion. No matter the application, Taco now providesthe products to maximize system performance whilesimplifying both installation and service.

Warning:Wiring connections must be made in accordance with all applicable electrical codes.Use copper wire only. Failure to follow this instruction can result in personal injury ordeath and/or property damage. 10-18 gauge wire recommended for 120 VAC connec-tions with 9 in.lbs. max torque, 12-22 gauge wire for thermostat connections with9 in.lbs. max torque, and 12-22 gauge wire for 24 VAC source with 5 in.lbs. max torque.

TypicalWiring

AlternativeWiring

AT

TO: 120 VAC POWERCIRCULATOR

JUMPER

120 VACINPUT

THERMOST

R WT T COM

24VAC

N/O N/C N/C N/ON H 3 4 4 6 6 5

TO: ZC

SR5011 ZONE SWITCHING RELAY

POWER

T STAT

TO: ZR

AT

TO: 120 VAC POWERCIRCULATOR

JUMPER

120 VACINPUT

THERMOST

R WT T COM

24VAC

N/O N/C N/C N/ON H 3 4 4 6 6 5

TO: TT ON BOILER

SR5011 ZONE SWITCHING RELAY

POWER

T STAT

Terminal Description:T & T Thermostat ConnectionCOM Common side of transformer, to power some setback thermostatsN Neutral wire of power inputH Hot wire of power input3 Common terminal for 4 n/o and 4 n/c4 n/o Normally open terminal4 n/c Normally closed terminal6 n/c Normally closed terminal6 n/o Normally open terminal5 Common terminal for 6 n/o and 6 n/c

Specifications:PRODUCT NUMBER TRANSFORMER MAXIMUM DIMENSIONS OF ENCLOSURENUMBER OF ZONES VOLTAGE COMBINED LOAD WIDTH HEIGHT DEPTH

SR501 1 Zone 120 VAC Input 7.2 amps 4 1/4" 5 1/4" 2 3/4"

All Switching Relays are relay type DPDT, have a thermostat current of .18, and have a singlephase motor rating per zone of 1/3 hp (7.2A) @ 120 VAC.

Instruction SheetSR501 Switching Relay

Do it Once. Do it Right.TACO, INC., 1160 Cranston Street, Cranston, RI 02920 Telephone: (401) 942-8000 FAX: (401) 942-2360.TACO (Canada), Ltd., 6180 Ordan Drive, Mississauga, Ontario L5T 2B3. Telephone: 905/564-9422. FAX: 905/564-9436.

Visit our web site at: http://www.taco-hvac.com

Printed in USA

Copyright 2000

TACO, Inc.

52

TACO SR501-845RP REPLACEMENT CROSS-REFERENCE

MANUFACTURER MODEL CONNECTIONS

Taco SR501-845RP L1 L2 3 4 5 6 R/T W/T

Argo AR821 1 2 3 4 5 6 T

AR822 L1 L2 3 4 NO 5 6 NO R/T G/T

Colombus MR10 L1 L2 3 4 NO 5 6 NO R/T G/T

Erie SR100 L1 L2 3 4 NO 5 6 NO R/T G/T

Honeywell RA89A 1 2 3 4 T T

RA832A 1 2 3 4 X X T T

R845A 1 2 3 4 5 6 T T

White-Rogers 889-189 1 2 3 4 T T

829-845 1 2 3 4 5 6 T T

Features:Universal ReplaceabilityIndicator LightsSnap-in PC Board to Existing EnclosureSimplified WiringFully Enclosed Snap-Out Relay100% Factory TestedUniversal Thermostat CompatibilityUL ApprovedExtended 3 Year WarrantyMade in the USA

Operation:Connect a thermostat to the “T T” terminals onthe switching relay. When the thermostat calls forheat, the relay is energized and power is given tothe circulator.

Power Input:Connect 120 volt ac power to terminals L1 and L2.

Jumper Placement:The jumper is factory installed between terminalsL1 and 3 to switch power on terminal 4.

Diagnostics:The Indicator lights show full functionality of theswitching relay. The green light should always beon, indicating that power is connected. When thethermostat calls for heat, both the appropriate cir-culator and red indicating light is energized.

The Taco Connection:Combine the reliability of the Taco Zone Valves,Priority Zoning Circulators, Thermostats, and the“00” family of circulators with the advanced featuresof the Taco Zone Controls to achieve total systemintegration. No matter the application, Taco now pro-vides the products to maximize system performancewhile simplifying both installation and service.

TypicalWiring

AlternativeWiring

TO: ZR

TO: ZC

THERMOSTAT

JUMPER

TO: 120 VAC POWER

INPUT

R WT T

L2 L1 3 4 5 6

120 VAC

POWER

T STATUNIVERSAL REPLACEMENT RELAY MODEL: SR501-845RP

REPL

AC

ES H

ON

EYW

ELL

R845

, RA

89A

& R

A83

2O

R C

OM

PARA

BLE

RELA

Y

CIRCULATOR

THERMOSTAT

TO: 120 VAC POWER

CIRCULATOR

TO: TT ON BOILER

JUMPER

R WT T

L2 L1 3 4 5 6

120 VACINPUT

POWER

T STATUNIVERSAL REPLACEMENT RELAY MODEL: SR501-845RP

REPL

AC

ES H

ON

EYW

ELL

R845

, RA

89A

& R

A83

2O

R C

OM

PARA

BLE

RELA

Y

Terminal Description:T & T Thermostat ConnectionL2 Neutral wire of power inputL1 Hot wire of power input3 Common terminal for 44 Normally open terminal6 Normally open terminal5 Common terminal for 6


SR501-845RP 1 Zone 120 VAC Input 7.2 amps 4 1/4" 5 1/4" 2 3/4"

All Switching Relays are relay type DPDT, have a thermostat current of .18, and have a single phase motor rating per zone of 1/3 hp (7.2A) @ 120 VAC.

Instruction SheetSR501-845RP Universal Replacement Relay

Warning:Wiring connections must be made in accordance with all applicable electrical codes.Use copper wire only. Failure to follow this instruction can result in personal injury ordeath and/or property damage. 10-18 gauge wire recommended for 120 VAC connec-tions with 9 in.lbs. max torque, 12-22 gauge wire for thermostat connections with9 in.lbs. max torque, and 12-22 gauge wire for 24 VAC source with 5 in.lbs. max torque.



Printed in USA

Copyright 1999

TACO, Inc.

53



Printed in USA

Copyright 1999

TACO, Inc.

SR 503

24 VACPOWER

FUSE 1 AMP

THERMOSTATS

ZONE1 ZONE2 ZONE3

120 VOLTCIRCULATORS

ZONE1 ZONE2 ZONE3





JUMPERSN P ZC H X ZR1

X2

ZONE 2

POWERZONE 1

ZONE 3


SR 503

24 VACPOWER

FUSE 1 AMP

THERMOSTATS

ZONE1 ZONE2 ZONE3

120 VOLTCIRCULATORS



TO: "ZC" ON AQUASTAT CONTROL

TO: "ZR" ON AQUASTAT CONTROL


N P ZC H X ZR1

X2

ZONE 2

POWERZONE 1

ZONE 3


Cold Start Boiler Application

Tankless Coil Boiler Application


SR502 2 with Priority 120 VAC Input 15 amps 10 1/4" 6 3/4" 2 3/4"SR503 3 with Priority 120 VAC Input 15 amps 10 1/4" 6 3/4" 2 3/4"

All Switching Relays are relay type DPST, have a thermostat current of .18, and have a single phase motor rating per zone of 1/3 hp (7.2A) @ 120 VAC.

Features: External Indicator LightsPrioritySimplified WiringFully Enclosed Snap-Out RelaysCompact DesignFuse Protected100% Factory TestedIsolated End SwitchContractor Friendly PC Board LayoutUniversal Thermostat CompatibilityUL Approved24 volt Power Input or Output TerminalExtended 3 Year WarrantyMade in the USA

The Taco Connection:Combine the reliability of the Taco Zone Valves, Priority ZoningCirculators, Thermostats, and the “00” family of circulators with theadvanced features of the Taco Zone Controls to achieve total systemintegration. No matter the application, Taco now provides the productsto maximize system performance while simplifying both installationand service.

External Diagnostics:Externally visible lights show full functionality of the switching relay.The green light should always be on, indicating that power is connect-ed. When the thermostat calls for heat, both the appropriate circulatorand red indicating light is energized.

Warning:Wiring connections must be made in accordance with all applicable electrical codes. Use copper wire only.Failure to follow this instruction can result in personal injury or death and/or property damage. 10-18 gaugewire recommended for 120 VAC connections with 9 in.lbs. max torque, 12-22 gauge wire for thermostat

Instruction SheetSR502 & SR503 Switching Relay

Operation: When the thermostat calls for heat, the appropriate circu-lator is energized and the isolated end switch (X1 and X2) will start theboiler.

Jumper Placement: The jumper should be placed between terminalsZC and H. Connect the isolated end switch, X1 and X2 to the boileraquastat control. For zone 1 priority, remove jumper betweenterminals P and ZC.

Power Input: Connect 120 volt ac power input to terminals N and H.Neutral wire to terminal N. Hot wire to terminal H.

Operation: When any thermostat calls for heat, the boiler is given asignal to start. The appropriate circulator is energized only when theboiler temperature is above the set low limit.

Jumper Placement: The jumper should be placed between terminalsH and X1. Connect terminal ZC to ZC terminal on the aquastat control.Connect terminal ZR to ZR terminal on the aquastat control. Confirmpolarity is consistent between boiler aquastat and switching relay. Forzone 1 priority, remove jumper between terminalsP and ZC.


54


ZONE 6

ON

OFF

PRIORITY

120V RELAY


X XEND

SWITCH

POWERINPUT

120 VAC INPUT

TO: "TT" ON BOILER



THERMOSTATS

FUSE 1 AMP

24 VACPOWER

SR 506

ZONE 2

POWERZONE 1

ZONE 3ZONE 4

ZONE 5ZONE 6

JUMPER


ZONE 6

ON

OFF

PRIORITY

120V RELAY

TO: "ZR" ON AQUASTAT

TO: "ZC" ON AQUASTAT

FUSE 1 AMP

24 VACPOWER


X XEND

SWITCH

POWERINPUT

120 VAC INPUT



THERMOSTATS

SR 506

ZONE 2

POWERZONE 1

ZONE 3

ZONE 4

ZONE 5ZONE 6

Operation: When any thermostat calls for heat, the appropriate circu-lator is energized and the isolated end switch (X and X) will start theboiler.

Priority Operation: When zone 6 is switched to the priority settingand is actuated, all other zones will stop operation until zone 6 is sat-isfied. When zone 6 is not switched to priority, all zones will operateindependently.

Jumper Placement: The jumper should be placed between terminalsZC and ZR. Connect the isolated end switch to the aquastat control onthe boiler.


Operation: When any thermostat calls for heat, the boiler is given asignal to start. The appropriate circulator is energized only when theboiler temperature is above the set low limit.

Priority Operation: When zone 6 is switched to the priority settingand is actuated, all other zones will stop operation until zone 6 is sat-isfied. When zone 6 is not switched to priority, all zones will operateindependently.

Jumper Placement: REMOVE the jumper between terminals ZC andZR. Connect terminal ZC to ZC terminal on the aqua-stat control.Connect terminal ZR to ZR terminal on the aqua-stat control. Confirmpolarity is consistent between boiler aquastat and switching relay.


The Taco Connection:Combine the reliability of the Taco Zone Valves, Priority ZoningCirculators, Thermostats, and the “00” family of circulators with theadvanced features of the Taco Zone Controls to achieve total systemintegration. No matter the application, Taco now provides the productsto maximize system performance while simplifying both installationand service.

External Diagnostics:Externally visible lights show full functionality of the switching relay.The green light should always be on, indicating that power is connected.When the thermostat calls for heat, both the appropriate circulator andred indicating light is energized.

Warning:Wiring connections must be made in accordance with all applicable electrical codes. Use copper wire only.Failure to follow this instruction can result in personal injury or death and/or property damage. 10-18 gaugewire recommended for 120 VAC connections with 9 in.lbs. max torque, 12-22 gauge wire for thermostatconnections with 9 in.lbs. max torque, and 12-22 gauge wire for 24 VAC source with 5 in.lbs. max torque.

Cold Start BoilerApplication

Tankless Coil BoilerApplication


SR504 4 with Priority 120 VAC Input 20 amps 10 1/4" 6 3/4" 2 3/4"SR506 6 with Priority 120 VAC Input 20 amps 11 3/4" 7 1/2" 3"


Instruction SheetSR504 & SR506 Switching Relay

Features: External Indicator LightsSwitchable PrioritySimplified WiringFully Enclosed Snap-Out RelaysCompact DesignFuse Protected100% Factory TestedIsolated End SwitchContractor Friendly PC Board LayoutUniversal Thermostat CompatibilityUL Approved24 volt Power Input or Output TerminalExtended 3 Year WarrantyMade in the USA



Printed in USA

Copyright 1999

TACO, Inc.

55


ZONE 6

ONOFF

PRIORITY

120V RELAY

PLUG-IN CARDS

FUSE 1 AMP

24 VACPOWER

EXPANSIONCONNECTIONS

SLAVE

MASTER

1234

RESET NORMAL



X XEND

SWITCH

POWERINPUT

120 VAC INPUTTO: "TT" ON BOILER



THERMOSTATS

SR 506-EXP

ZONE 2

POWERZONE 1


JUMPER


ZONE 6

ONOFF

PRIORITY

120V RELAY

PLUG-IN CARDS

FUSE 1 AMP

24 VACPOWER

EXPANSIONCONNECTIONS

SLAVE

MASTER

1234

RESET NORMAL

TO: "ZC" ON AQUASTAT

TO: "ZR" ON AQUASTAT



X XEND

SWITCH

POWER

INPUT

120 VAC INPUT



THERMOSTATS

SR 506-EXP

ZONE 2

POWERZONE 1


Operation: When any thermostat calls for heat, the appropriate circulator isenergized and the isolated end switch (X and X) will start the boiler.

Priority Operation: When zone 6 is switched to the priority setting and is actu-ated, all other zones will stop operation until zone 6 is satisfied. When zone 6 isnot switched to priority, all zones will operate independently.

Mode Operation: When the mode switch is set to NORMAL, the end switchrelay will be energized if any zone is in operation. When the switch is set toRESET, the end switch relay will only be energized if priority zone is in operation,or through the operation of a plug-in reset control.

Jumper Placement: The jumper should be placed between terminals ZC and ZR.Connect the isolated end switch to the aquastat control on the boiler.

Power Input: Connect 120 volt ac power input to terminals N and H. Neutralwire to terminal N. Hot wire to terminal H.

Expansion Connections: Set the expansion switch to MASTER on the switchingrelay that has the designated priority zone or is utilizing the PowerPort options.Set all other daisy chained controls to SLAVE. Connect thermostat wire (18-22gauge) between terminals 1, 2, 3, 4 on the master control to the corresponding1, 2, 3, 4 on the SLAVE control(s). Controls may be daisy chained up to 20 zonesusing any combination of -EXP controls.

Operation: When any thermostat calls for heat, the boiler is given a signal tostart. The appropriate circulator is energized only when the boiler temperature isabove the set low limit.

Priority Operation: When zone 6 is switched to the priority setting and is actu-ated, all other zones will stop operation until zone 6 is satisfied. When zone 6 isnot switched to priority, all zones will operate independently.

Mode Operation: When the mode switch is set to NORMAL, the end switchrelay will be energized if any zone is in operation. When the switch is set toRESET, the end switch relay will only be energized if priority zone is in operation,or through the operation of a plug-in reset control.

Jumper Placement: REMOVE the jumper between terminals ZC and ZR.Connect terminal ZC to ZC terminal on the aqua-stat control. Connect terminalZR to ZR terminal on the aqua-stat control. Confirm polarity is consistentbetween boiler aquastat and switching relay.

Power Input: Connect 120 volt ac power input to terminals N and H. Neutralwire to terminal N. Hot wire to terminal H.

Expansion Connections: Set the expansion switch to MASTER on the switchingrelay that has the designated priority zone or is utilizing the PowerPort options.Set all other daisy chained controls to SLAVE. Connect thermostat wire (18-22gauge) between terminals 1, 2, 3, 4 on the master control to the corresponding1, 2, 3, 4 on the SLAVE control(s). Controls may be daisy chained up to 20 zonesusing any combination of -EXP controls.

External Diagnostics: Externally visible lights show full functionality of theswitching relay. The green light should always be on, indicating that power isconnected. When the thermostat calls for heat, both the appropriate circulatorand red indicating light is energized.

Warning: Wiring connections must be made in accordance with all applicable electrical codes. Use copper wire only. Failure to follow this instruction can result in personal injury or death and/or propertydamage. 10-18 gauge wire recommended for 120 VAC connections with 9 in.lbs. max torque, 12-22 gauge wire for thermostat connections with 9 in.lbs. max torque, and 12-22 gauge wire for 24 VAC source with5 in.lbs. max torque.

Cold Start Boiler Application

Tankless Coil Boiler Application

Specifications:PRODUCT NUMBER POWER TRANSFORMER MAXIMUM DIMENSIONS OF ENCLOSURENUMBER OF ZONES PORTS VOLTAGE COMBINED LOAD WIDTH HEIGHT DEPTH

SR503-EXP 3 with Priority 3 120 VAC Input 20 amps 10 1/4" 6 3/4" 2 3/4"SR504-EXP 4 with Priority 3 120 VAC Input 20 amps 10 1/4" 6 3/4" 2 3/4"SR506-EXP 6 with Priority 3 120 VAC Input 20 amps 11 3/4" 7 1/2" 3"


Instruction SheetSR503-EXP, SR504-EXP & SR506-EXP Switching Relay

Features: External Indicator Lights

Plug-In PowerPort CardsSwitchable PrioritySimplified WiringAdd-On Power ControlsFully Enclosed Snap-Out

RelaysCompact DesignFuse Protected100% Factory Tested

Isolated End SwitchExpandable to 20 ZonesContractor Friendly PC Board

LayoutUniversal ThermostatCompatibilityUL Approved24 volt Power Input or Output

TerminalExtended 3 Year WarrantyMade in the USA



Printed in USA

Copyright 1999

TACO, Inc.

56

24 VAC

ZONE 1 ZONE 2 ZONE 3 ZONE 4 ZONE 5

FUSE (5 A

MP M

AX

)

T T T T T T T T T T

ZVC 405



JUMPER3 & 4


123

MOTOR ENDSWITCH



T STAT 1

VALVE 1

T STAT 2




24 VAC

FA

CTO

RYIN

STA

LLED

TRA

NSF

ORM

ER

120 VACINPUT

WHITE

BLACK

ENDSWITCH

N/O COM N/C

TT

TO CIRCULATOROR BOILERAQUASTAT RELAY

DRYCONTACTS

POW

ER IN

24 VAC

FA

CTO

RYIN

STA

LLED

TRA

NSF

ORM

ER

120 VACINPUT

WHITE

BLACK

Operation/External Diagnostics: When any thermostatcalls for heat, the appropriate zone valve is energized andthe yellow light goes on. When the zone valve is fullyopen, the red light goes on and energizes the end switchrelay. The green light should always be on, indicating thatpower is connected.

The Taco Connection: Combine the reliability of the TacoZone Valves, Priority Zoning Circulators, Thermostats, andthe “00” family of circulators with the advanced features ofthe Taco Zone Controls to achieve total system integra-tion. No matter the application, Taco now provides theproducts to maximize system performance while simplify-ing both installation and service.

Warning: Wiring connections must be made in accordance with all applicableelectrical codes. Use copper wire only. Failure to follow this instruction can resultin personal injury or death and/or property damage. 10-18 gauge wire recom-mended for 120 VAC connections with 9 in.lbs. max torque, 12-22 gauge wire forthermostat connections with 9 in.lbs. max torque, and 12-22 gauge wire for 24VAC source with 5 in.lbs. max torque.

WiringDiagram

Specifications:PRODUCT NUMBER TRANSFORMER MAX OUTPUT DIMENSIONS OF ENCLOSURENUMBER OF ZONES VOLTAGE AT 24 VAC WIDTH HEIGHT DEPTH

ZVC403 3 Zone 120 VAC Input 40 VA 10 1⁄4" 6 3⁄4" 2 3⁄4"ZVC405 5 Zone 120 VAC Input 80 VA 113⁄4" 71⁄2" 3"

All Zone Valve Controls are relay type DPDT and have a single phase motor rating per zone of 1⁄6 hp (5A) @ 120 VAC.

Instruction SheetZVC403 & ZVC405 Zone Valve Control

Features: External Indicator Lights

Simplified WiringWorks with 2, 3, or 4-

Wire Zone ValvesCompact DesignFuse Protected100% Factory TestedIsolated End Switch

Extra Set of Dry ContactsContractor Friendly PC

Board LayoutUniversal Thermostat

CompatibilityUL ApprovedSturdy Screw ConnectionsExtended 3 Year WarrantyMade in the USA



Printed in USA

Copyright 2000

TACO, Inc.

ENDSWITCH

N/O COM N/C

TT BOILER

HOT

NEUTRAL

120 VAC

Installation ofOptional System

57

24 VAC


MODENORMAL RESET

FUSE (7 A

MP M

AX

)


ZONE 6 PRIORITY

OFF

ON

ZVC 406




JUMPER3 & 4


123

MOTOR ENDSWITCH



T STAT 1

VALVE 1

T STAT 2




24 VAC F

AC

TORY

INST

ALL

EDTR

AN

SFO

RMER

120 VACINPUT

WHITE

BLACK

POW

ER IN

24 VAC

FA

CTO

RYIN

STA

LLED

TRA

NSF

ORM

ER

120 VACINPUT

WHITE

BLACK

N/O COMZONE 6 RELAY

TT

TO CIRCULATOROR BOILERAQUASTAT RELAY

DRYCONTACTS

ENDSWITCH

EXTRAEND

SWITCH

MAIN N/C

1 2 3 4ZONE 6

PRIORITYZONE


Operation/External Diagnostics: When any thermostatcalls for heat, the appropriate zone valve is energized and theyellow light goes on. When the zone valve is fully open, thered light goes on and energizes the end switch relay. The greenlight should always be on, indicating that power is connected.

Priority Operation: When zone 6 is switched to the prioritysetting and is actuated, all other zones will stop operation untilzone 6 is satisfied. When zone 6 is not switched to priority, allzones will operate independently. Note: When a circulator isused on the priority zone instead of a zone valve, jumper 3 and4 of the priority zone.

Mode Operation: When the mode switch is set to NORMAL,the end switch relay will be energized if any zone is in opera-tion. When the switch is set to RESET, the end switch relaywill only be energized if priority zone is in operation.

The Taco Connection: Combine the reliability of the TacoZone Valves, Priority Zoning Circulators, Thermostats, and the“00” family of circulators with the advanced features of theTaco Zone Controls to achieve total system integration. Nomatter the application, Taco now provides the products tomaximize system performance while simplifying both instal-lation and service.

WiringDiagram


ZVC404 4 with Priority 120 VAC Input 40 VA 101⁄4" 63⁄4" 23⁄4"ZVC406 6 with Priority 120 VAC Input 80 VA 113⁄4" 71⁄2" 3"

All Zone Valve Controls are relay type DPDT and have a single phase motor rating per zone of 1⁄6 hp (5A) @ 120 VAC.

Instruction SheetZVC404 & ZVC406 Zone Valve Control

Features: External Indicator LightsSwitchable PrioritySimplified WiringWorks with 2, 3, or 4-Wire Zone ValvesCompact DesignFuse Protected100% Factory TestedIsolated End SwitchExtra Set of Dry ContactsContractor Friendly PC Board LayoutUniversal Thermostat CompatibilityUL ApprovedSturdy Screw ConnectionsExtended 3 Year WarrantyMade in the USA

Warning: Wiring connections must be made in accordance with all applicable electrical codes. Use copperwire only. Failure to follow this instruction can result in personal injury or death and/or property damage.10-18 gauge wire recommended for 120 VAC connections with 9 in.lbs. max torque, 12-22 gauge wire forthermostat connections with 9 in.lbs. max torque, and 12-22 gauge wire for 24 VAC source with 5 in.lbs.



Printed in USA

Copyright 2000

TACO, Inc.

Installation ofOptional Systemand/or DHW Circulator

N/O COM N/C

TT BOILER

HOT

NEUTRAL120 VAC

ENDSWITCH

EXTRAEND

SWITCH

MAIN

(See Note)

SYSTEM CIRCULATOR

DHW CIRCULATOR

58


FUSE

7 A

MP

MA

X


ZONE 6

OFF

ON

1 2 3 4ZONE 1

1 2 3 4ZONE 2

1 2 3 4ZONE 3

1 2 3 4ZONE 4

1 2 3 4ZONE 5

1 2 3 4ZONE 6

MODENORMALRESET


PRIORITYZONE



123

JUMPER3 & 4

MOTOR ENDSWITCH



JUMPER3 & 4

1 2 3 4

MASTER

SLAVE

POWERCONTROLS


TAC

O, I

NC

ZVC

406-

EXP

T STAT 1

T STAT 2

T STAT 3

T STAT 4

T STAT 5

T STAT 6

POWER ON

VALVE 1

VALVE 2

VALVE 3

VALVE 4

VALVE 5

VALVE 6

SEE NOTE

EXPANSION

ZVC 406-EXPSIX ZONE ZONE VALVE CONTOL


24 VAC 24 VAC

FA

CTO

RYIN

STA

LLED

TRA

NSF

ORM

ER

120 VACINPUT

WHITE

BLACK

POW

ER IN

24 VAC

FA

CTO

RYIN

STA

LLED

TRA

NSF

ORM

ER

120 VACINPUT

WHITE

BLACK

TO CIRCULATOROR BOILER

AQUASTAT RELAY

DRYCONTACTS

N/O COMZONE 6 RELAY

N/CEND

SWITCHA

BOILER

ENDSWITCH

BPUMP

TO CIRCULATOROR BOILER

AQUASTAT RELAY

Operation/External Diagnostics: When any thermostat calls forheat, the appropriate zone valve is energized and the yellow light goeson. When the zone valve is fully open, the red light goes on and ener-gizes the end switch relays. The green light should always be on, indi-cating that power is connected.Priority Operation: When zone 6 is switched to the priority settingand is actuated, all other zones will stop operation until zone 6 is sat-isfied. When zone 6 is not switched to priority, all zones will operateindependently. Note: When a circulator is used on the priority zoneinstead of a zone valve, jumper 3 and 4 of the priority zone.Mode Operation: When the mode switch is set to NORMAL, both endswitch relays will be energized if any zone is in operation. When themode switch is set to RESET, the end switch relay “A” will only be ener-gized when the priority zone is in operation. The end switch relay “B”will be energized when any zone is in operationPower Input: Connect 120 volt ac power input to leads on trans-former. Neutral to white wire. Hot to black wire.Expansion Connections: Set the expansion switch to MASTER on thezone valve control that has the designated priority zone or is utilizingthe PowerPort options. Set all other daisy chained controls to SLAVE.Connect thermostat wire (18-22 gauge) between terminals 1, 2, 3, 4 onthe master control to the corresponding 1, 2, 3, 4 on the SLAVE control(s).Controls may be daisy chained up to 20 zones using any combinationof Switching Relay -EXP or Zone Valve -EXP controls.

The Taco Connection: Combine the reliability of the Taco Zone Valves,Priority Zoning Circulators, Thermostats, and the “00” family of circula-tors with the advanced features of the Taco Zone Controls to achievetotal system integration. No matter the application, Taco now providesthe products to maximize system performance while simplifying bothinstallation and service.

WiringDiagram


ZVC404-EXP 4 with Priority 120 VAC Input 80 VA 113⁄4" 71⁄2" 3"ZVC406-EXP 6 with Priority 120 VAC Input 80 VA 113⁄4" 71⁄2" 3"

All Zone Valve Controls are relay type DPDT and have a single phase motor rating per zoneof 1⁄6 hp (5A) @ 120 VAC.

Instruction SheetZVC404-EXP & ZVC406-EXP Zone Valve Control

Features:External Indicator LightsPlug-In PowerPort CardsSwitchable PrioritySimplified WiringAdd-On Power ControlsWorks with 2, 3, or 4-Wire

Zone ValvesUL ApprovedFuse Protected100% Factory Tested

Isolated End SwitchExpandable to 20 ZonesExtra Set of Dry ContactsContractor Friendly PC

Board LayoutUniversal Thermostat

CompatibilitySturdy Screw ConnectionsExtended 3 Year WarrantyMade in the USA

Warning: Wiring connections must be made in accordance with all applicable electrical codes. Use copper wire only. Failure to follow this instruction can result in personal injury or death and/or propertydamage. 10-18 gauge wire recommended for 120 VAC connections with 9 in.lbs. max torque, 12-22 gauge wire for thermostat connections with 9 in.lbs. max torque, and 12-22 gauge wire for 24 VAC source with5 in.lbs. max torque.



Printed in USA

Copyright 2000

TACO, Inc.

N/O COM N/C

T TBOILER

HOTNEUTRAL

120 VAC

(See Note)

SYSTEMCIRCULATOR

DHWCIRCULATOR

ENDSWITCH

ABOILER

ENDSWITCH

BPUMP

Installation ofOptional Systemand/or DHW Circulator

59

Operation HAFC101 and 201:The Hydro Air Fan Control is an interfacebetween the thermostat and air handler. Italso has an isolated end switch to start theboiler and/or pump. When the thermostatcalls for heat, the Fan Control energizes theend switch relay and allows the fan to operateat low speed when the water is above theoptional aquastat setting. When the thermo-stat calls for cooling, the Fan Control energizesthe condenser and operates on high speed.

Additional HAFC201 Operations:Selectable one, three or four minute delay onfan operation in heating mode. Selectablepump exercise activates circulator but doesnot enable boiler contacts. Two minutes every24 hours minimizes the chance of bacteriabuild-up in an open loop system. Thirty sec-onds every two weeks minimizes seasonalstart-up problems generally associated withharsh water conditions. Optional aquastat orthermostat can be connected to FreezeProtection TT terminals to reduce the chanceof pipes freezing by energizing the pump drycontacts (boiler contacts not activated.)

Switch Settings (HAFC201):1 1 minute on fan delay, in heating mode2 3 minute on fan delay, in heating mode

1&2 4 minute on fan delay, in heating mode3 Pump dry contact activated for 2 min-

utes every 24 hours (boiler contacts notactivated)

4 Pump dry contacts activated for 30 sec-onds every two weeks (boiler contacts not activated)

External Diagnostics:The external lights show full functionality ofthe Hydro Air Fan Control. The green lightshould always be on, indicating that power isconnected. Red lights indicate fan operationfor heating and cooling modes.

Warning:Wiring connections must be made in accordance withall applicable electrical codes. Use copper wire only.Failure to follow this instruction can result in personalinjury or death and/or property damage. 10-18 gaugewire recommended for 120 VAC connections with9 in.lbs. max torque, 12-22 gauge wire for thermostatconnections with 9 in.lbs. max torque, and 12-22 gaugewire for 24 VAC source with 5 in.lbs. max torque.

M

FanRelay

Line

24 V

AC

1 Speed Air Handler*

THERMOSTAT



Dry ContactsTo: “T T” onBoiler orSwitchingRelay



T T

BOILER AIR HANDLER

G GX X C R Y





Hot

Neutral

Circulator

XXPUMP


1 MIN

ON

DELA

Y - FAN

3 MIN

ON

DELA

Y - FAN

2 MIN

@ 24 H

R - PUM

P30 SEC

@ 2 W

K - PUM

P

OFF O

N

Jumper


2 Speed Air Handler*

THERMOSTAT



Dry ContactsTo: “T T” on Boileror Switching Relay



T T

BOILER AIR HANDLER

G GX X C R Y



M

Low

Hig

h

Line

24 V

AC

Fan

Rela

ys

Terminal Description:Thermostat:C Optional: Common side of transformer W White - Heating signal

to power some styles of thermostats Y Yellow - Condenser signalR Red - Hot side of transformer used to G Green - Fan signal

switch all functionsWater Coil Aquastat:TT Connect to aquastat at air handler to control operation of the fan when

in the heating mode. Install a jumper if the aquastat is not usedFreeze Protection Aquastat:TT Connect to aquastat or thermostat to sense low ambient temperature.

Reduces the chance of pipes freezing by energizing the pump dry contacts.Pump Dry Contacts:XX May switch pump directly by bringing in external line voltage or connect

to “T T” on a switching relay.Boiler Dry Contacts:XX Connect to the boiler or “T T” terminals on a switching relay.Air Handler:C Common side of transformer to power the Fan ControlR Red - Hot side of transformer used to switch all functionsY Yellow - Condenser signal

One Speed Motor:Glow Connect the fan to the relay. Keep the jumper installed between Ghigh and Glow.

Two Speed Motor:Ghigh Remove jumper and connect Ghigh to the high speed fan relay and

connect Glow to the low speed fan relay.

Specifications: ** Model number changed from SR501-FPRODUCT NUMBER POWER INPUT MAXIMUM RELAY THERMOSTAT SINGLE PHAZE MOTOR DIMENSIONS OF ENCLOSURENUMBER OF ZONES VOLTAGE COMBINED LOAD TYPE CURRENT RATING (RELAY) WIDTH HEIGHT DEPTH

HAFC101** 1 Zone 24 VAC Input 5 amps DPDT .18 1/6 HP(5A) @120VAC 4 1/4" 5 1/4" 2 3/4"HAFC201•• 1 Zone 24 VAC Input 5 amps DPDT .18 1/6 HP(5A) @120VAC 4 1/4" 5 1/4" 2 3/4"The Hydro Air Fan Controls are relay type DPDT, have a thermostat current of .18 and a single phase motor rating per zone of 1/6 HP (5A) @ 120 VAC.

Instruction SheetHydro Air Fan Controls

Printed in USA

Copyright 1999

TACO, Inc.

* Both HAFC101 and 201 capable of 1 and 2 speed applications



Printed in USA

Copyright 1999

TACO, Inc.

60


Printed in USA

Copyright 2000

TACO, Inc.

Instruction SheetPC600 Post Purge Timer Plug-In PowerPort Card

102-094

SUPERSEDES: August 1, 1997 EFFECTIVE: May 1, 2000

Plant ID No. 9300-867

Operation:Once the priority zone is satisfied, the PC600 maintains power to the circulator, but does not fire the boiler. The circulator purges excess heat into the priority zone,minimizing standby loss during warm weather months and optimizing boiler operation when used with a boiler reset control. Power can be maintained to the circu-lator from a minimum of 10 seconds to a maximum of 420 seconds. The power LED light is energized when the priority zone or the post purge card is in operation.Installation:The PC600 can be installed in any one of the PowerPort terminals located on the Taco Expandable (-EXP) Control(s). Remove the shunt/jumper between pins 9& 10 on the PowerPort terminal before installing the PC600. Align the connector on the base of the post purge card with the PowerPort terminal on the ExpandableControl and push until the two mate.XX Terminals (Optional):The XX terminals on the post purge card can be wired to TT on the boiler to fire only when the priority zone is calling for heat. If using a boiler with an internalreset control, wire the XX terminals in parallel with the TT connections of the internal reset control.

Instruction SheetPC605 Priority Protection Plug-In PowerPort Card

102-095

SUPERSEDES: MAY 1, 1998 EFFECTIVE: MAY 1, 2000

PLANT ID NO. 9300-1012

Operation:The PC605 Priority Protection Plug-In Card is a solid state control that helps prevent freeze-ups in the event of a priority zone failure. If the priority zone calls for heatcontinuously for more than one hour, power is returned to the space heating (non-priority) zones, allowing all zones to function independently. Once the priority zone issatisfied, the PC605’s auto-reset is activated and the priority zone is again allowed to have priority for up to one hour the next time it calls. The one hour time frame isnot adjustable. The red LED light is energized only when the Priority Protection Card is operating in priority override mode.

Installation:The PC605 can be installed in any unoccupied PowerPort terminal located on the Taco Expandable (-EXP) Control(s). Do not remove the shunt between pins 9 &10 on the Expandable Control unless a PC600 is also installed. Align the connector on the base of the priority protection card with the PowerPort terminal on theExpandable Control and push until the two mate. The PC605 can be used in conjunction with any other Taco PC style PowerPort Cards or Add-on Controls.


Printed in USA

Copyright 2000

TACO, Inc.

Operation:The PC610 Pump Exercise and Timer Plug-In Card is a solid state universal timer designed to cycle all the pumps that are attached to the Expandable Control(s)at selected time intervals. This minimizes seasonal start-up problems generally associated with harsh water conditions. The control can be configured to reducethe chance of freeze-ups by cycling the pumps more often during cold weather months. Bacteria can be minimized in heating systems that utilize domestic hotwater heaters as their heat source by systematically circulating the water.

Installation:The PC610 can be installed in any unoccupied PowerPort terminal located on the Taco Expandable (-EXP) Control(s). Do not remove the shunt between pins 9 & 10 onthe Expandable Switching Relay unless a PC600 is also installed. Align the connector on the base of the priority protection card with the PowerPort terminal on theExpandable Switching Relay and push until the two mate. The PC610 can be used in conjunction with any other Taco PC style PowerPort Cards or Add-on Controls.

Typical Settings:

Instruction SheetPC610 Pump Exercise and Timer Plug-In PowerPort Card

102-096

SUPERSEDES: May 31, 1998 EFFECTIVE: May 1, 2000

Plant ID No. 9300-1025

Application On Time Off TimePump Exercise 30 sec. 2 weeks

Bacteria Minimization 4 min. 12 hoursFreeze Protection 4 min. 1 hour


Printed in USA

Copyright 2000

TACO, Inc.

61

Taco Low Water Cutoff Replacement Guide

Taco McDonnell & Miller Hydrolevel Honeywell

LTA1203N-1

900900CPS-800-120PS-801-120PS-850-120PS-851-120

450650

RW700A1031RW700A1056RW700A1080

LTM1203N-1

900M901M902MPS-801-M-120PS-850-M-120PS-851-M-120

550750

RW700B1054RW700B1039RW700B1021

LTA0243N-1

PS-800-24PS-802-24PS-850-24PS-852-24

400600

RW700A1098

LTM0243N-1PS-850-M-24PS-802-M-24PS-852-M-24

500700

LTA1203R-1750-120750-T-120

650R

LTM1203R-1750-M-120750-MT-120

550R

LTA1202R-1 PS-851-RX2-120 650RLTM1202R-1 PS-851-M-RX2-120 550RLTA0242R-1 PS-802-RX2-24 400RLNA0243S-1 RB-24 24SV

LNA1203S-1

901RB-120RB-120IIRB-122

170SVRW700A1007RW700A1106

P3R-1 RS-1-LPLTA1203S-1 PS-851-SP-120 650SVLTM1203S-1 PS-851-SP-M-120 550SVLTA0243S-1 PS-852-SP-24 600SVLTM0243S-1 PS-852-SP-M-24 500SV

Bold / Italics Indicates Discontinued Part Number

62

Taco LT Series 120 Volt LWCO Competitive Wiring Cross Reference

120 VAC Models with 120 VAC Burner Circuits

LTx120x

NC COM NO H N GND P

BURNERCIRCUIT

HOT

NEUTRAL

120 VACCIRCUIT

PS-801/851-120w/Red & Amber LEDs

Series 750

1 2 3 4 5

BURNERCIRCUIT

HOT

NEUTRAL

120 VACCIRCUIT

450, 550, 650 & 750

2 1 P1 P2 A

BURNERCIRCUIT

HOT

NEUTRAL

120 VACCIRCUIT

N H C W B

BURNERCIRCUIT

HOT

NEUTRAL

120 VACCIRCUIT

PS-801/851-120w/Red & Green LEDs


LTx120x

NC COM NO H N GND P

BURNERCIRCUIT

HOT

NEUTRAL

120 VACCIRCUIT

PS-801/851-120w/Red & Amber LEDs

Series 750

1 2 3 4 5

450, 550, 650 & 750

2 1 P1 P2 A

BURNERCIRCUIT

HOT

NEUTRAL

120 VACCIRCUIT

N H C W B

PS-801/851-120w/Red & Green LEDs

24 VACTRANSFORMER

24 VACTRANSFORMER

BURNERCIRCUIT

HOT

NEUTRAL

120 VACCIRCUIT

24 VACTRANSFORMER

BURNERCIRCUIT

HOT

NEUTRAL

120 VACCIRCUIT

24 VACTRANSFORMER

63

Taco LT Series 24 Volt LWCO Competitive Wiring Cross Reference


LTx024x

NC COM NO H N GND P

BURNERCIRCUIT

HOT

NEUTRAL

24 VACCIRCUIT

400, 500, 600 & 700

2 1 P1 P2 A

BURNERCIRCUIT

HOT

NEUTRAL

24 VACCIRCUIT

N H C W B

BURNERCIRCUIT

HOT

NEUTRAL

24 VACCIRCUIT

PS-802/852-24


LTx024x

NC COM NO H N GND P

BURNERCIRCUIT

HOT

NEUTRAL

120 VACCIRCUIT

400, 500, 600 & 700

2 1 P1 P2 A

BURNERCIRCUIT

HOT

NEUTRAL

120 VACCIRCUIT

N H C W B

PS-802/852-24

24 VACTRANSFORMER

24 VACTRANSFORMER

BURNERCIRCUIT

HOT

NEUTRAL

120 VACCIRCUIT

24 VACTRANSFORMER

64

Taco LN Series 120 Volt LWCO Competitive Wiring Cross Reference


LNA120S

N H COM NC NO

BURNERCIRCUIT

HOT

NEUTRAL

120 VACCIRCUIT

RB-120

1 2 3 4 5

BURNERCIRCUIT

HOT

NEUTRAL

120 VACCIRCUIT

RB-122

N H B C

BURNERCIRCUIT

HOT

NEUTRAL

120 VACCIRCUIT

GN H P1 P2 A

BURNERCIRCUIT

HOT

NEUTRAL

120 VACCIRCUIT

170


LNA120S

N H COM NC NO

RB-120

1 2 3 4 5

RB-122

N H B C GN H P1 P2 A

170

BURNERCIRCUIT

HOT

NEUTRAL

120 VACCIRCUIT

24 VACTRANSFORMER

BURNERCIRCUIT

HOT

NEUTRAL

120 VACCIRCUIT

24 VACTRANSFORMER

BURNERCIRCUIT

HOT

NEUTRAL

120 VACCIRCUIT

24 VACTRANSFORMER

BURNERCIRCUIT

HOT

NEUTRAL

120 VACCIRCUIT

24 VACTRANSFORMER

65

Taco LN Series 24 Volt LWCO Competitive Wiring Cross Reference


LNA024S

N H COM NC NO

BURNERCIRCUIT

HOT

NEUTRAL

24 VACCIRCUIT

RB-24

BURNERCIRCUIT

HOT

NEUTRAL

24 VACCIRCUIT

24

BURNERCIRCUIT

HOT

NEUTRAL

24 VACCIRCUIT

YellowWire

YellowWire

WhiteWire

RedWire

OrangeWire

BrownWire

WhiteWire

BlackWire


LNA024S

N H COM NC NO

BURNERCIRCUIT

HOT

NEUTRAL

120 VACCIRCUIT

24 VACTRANSFORMER

66

Wiring TACO LN or LT Series 24VAC Low Water Cutoff toMcDonnell & Miller Series WF2 Uni-Match Electric Water Feeder

UNI-MATCHWATER FEEDER

MODEL WF2-U-24

24VACSUPPLY

50/60 HzH

N

N H COM NC NOAC POWER OUTPUT CONTACTS

N HW

1 2 3

BURNER

SWITCH POSITION #2

M&M23

Set the TACO LT Model’s DOM to30 seconds and DOB to 15 seconds.*

0R

Remove jumper between H and COM if using power sourceother than burner circuit or when using mixed voltages.

Do not connect feeder to a manual reset LWCO.

* Note on switch position:

Switch setting 1 (M&M), the feed cycle repeats indefinitely. Position 2 and 3 gives one feed cycle.

If using the LN series, choose whichever position best matches the application:

WF-2 switch to position 1- 60 sec. delay, 90 sec. feed, repeats

WF-2 switch to position 2- 90 sec. delay, 90 sec. feed


Wiring TACO LN or LT Series 120VAC Low Water Cutoff toMcDonnell & Miller Series WF2 Uni-Match Electric Water Feeder

UNI-MATCHWATER FEEDER

MODEL WF2-U-120

120VACSUPPLY

50/60 Hz H

N


N HW

1 2 3

BURNER

SWITCH POSITION #2

M&M23

Set the TACO LT Model’s DOM to30 seconds and DOB to 15 seconds.*

0R

* Note on switch position:

Switch setting 1 (M&M), the feed cycle repeats indefinitely. Position 2 and 3 gives one feed cycle.

If using the LN series, choose whichever position best matches the application:

WF-2 switch to position 1- 60 sec. delay, 90 sec. feed, repeats



24 VAC LWCO Using Burner Circuit Power Source




67

Wiring TACO LN or LT Series 24VAC Low Water Cutoff toHydrolevel VXT-24 Water Feeder (Non-Display Model)

SAFGARD VXT-24WATER FEEDER

24VACSUPPLY

50/60 Hz H

N


BURNER

Set the TACO LT Model’s DOB to30 seconds and DOM to 15 seconds.

Set Safgard as desired.

WHITE BLACK



Wiring TACO LN or LT Series 120VAC Low Water Cutoff toHydrolevel VXT-120 Water Feeder (Non-Display Model)

SAFGARD VXT-120WATER FEEDER

120VACSUPPLY

50/60 Hz H

N


BURNER



WHITE BLACK





68

Wiring TACO LN or LT Series 24VAC Low Water Cutoff toHydrolevel VXT-24 Programmable Water Feeder (Model with Display)

SAFGARD VRTX-24WATER FEEDER

24VACSUPPLY

50/60 Hz H

N


BURNER



WHITE REDBLACK



Wiring TACO LN or LT Series 120VAC Low Water Cutoff toHydrolevel VXT-120 Programmable Water Feeder (Model with Display)

SAFGARD VRTX-120WATER FEEDER

120VACSUPPLY

50/60 Hz H

N


BURNER



WHITE REDBLACK





69

Taco Industrial Flow Switch Replacement Guide

Taco PotterMcDonnell

& Miller

JohnsonControls /

PennHydrolevel

IFS01BF-1 IFS-1 FS4-3F61KB-11F61LB-1

44-100

IFS01BR-1 FS4-3-RP

IFS01SF-1 IFSS-1FS4-3SFS4-3S-E

IFS02BF-1 IFS-2FS4-3DFS4-3D-E

IFS02SF-1 IFSS-2 FS4-3DSIFSH1BF-1 IFS-HC-1IFSH1SF-1 IFSS-HC-1IFSH2BF-1 IFS-HC-2IFSH2SF-1 IFSS-HC-2IFSW2BF-1 IFS-WP-2IFSW2SF-1 IFSS-WP-2

IFSWSBF-1IFS-WPSIFS-WP-1

FS8-WF61MB-1F61MB-5

IFSWSSF-1IFSS-WPSIFSS-WP-1

IFSWTBF-1 IFS-WPTIFSWTBR-1 FS4-3RP-T

70

Aquastat Wiring

L1 L2 T T

L1(HOT)

L2(NEUTRAL)

LINE VOLTAGEOIL BURNER RELAY

OR GAS VALVE

CIRCULATORON BOILER

(IF ATTACHED)

B2 C2 B1ZR

TACOZONE

CONTROL

HONEYWELL L8124A & C OR EQUAL

120 VACINPUT

C1 ZC

END SWITCH

B1 B2 T T

L1(HOT)

L2(NEUTRAL)

CIRCULATORON BOILER

(IF ATTACHED)L1 C2L2

TACOZONE

CONTROL

HONEYWELL L8124B OR EQUAL120 VACINPUT

C

MILLI-VOLTAGEGAS VALVE

END SWITCH

T1 T2 Z

L1(HOT)

L2(NEUTRAL)

CIRCULATORON BOILER

(IF ATTACHED)

L1

C2

L2

TACOZONE

CONTROL

HONEYWELL L8124E OR EQUAL

120 VACINPUT

C1

LOW VOLTAGEGAS VALVE

END SWITCH

B1 B2

Aquastat Wiring

TV T Z

L1(HOT)

CIRCULATORON BOILER

(IF ATTACHED)

B2C2

B1

C1

TACOZONE

CONTROL

HONEYWELL L8124G & L OR EQUAL120 VACINPUT

ZR

END SWITCH

L1

L2(NEUTRAL)

L2

ZC

LINEVOLTAGE

OIL BURNERRELAY OR

GAS VALVE

71

L1 L2 T T

L1(HOT)

L2(NEUTRAL)


OR GAS VALVE

CIRCULATORON BOILER

(IF ATTACHED)

B2

C1

B1ZR

TACOZONE

CONTROL

HONEYWELL L8124M OR EQUAL

120 VACINPUT

C2

ZC

END SWITCH

L1 L2 T T

L1(HOT)

L2(NEUTRAL)


OR GAS VALVE

CIRCULATORON BOILER

(IF ATTACHED)

C1 B2B1

TACOZONE

CONTROL

HONEYWELL L8148A OR EQUAL

120 VACINPUT

C2

END SWITCH

3

Aquastat Wiring

TV W T

L1(HOT)

L2(NEUTRAL)

CIRCULATORON BOILER

(IF ATTACHED)

L1

C2

L2

TACOZONE

CONTROL

HONEYWELL L8148E OR EQUAL

120 VACINPUT

C1


END SWITCH

B1 B2

Z

72

TV W T

L1(HOT)

L2(NEUTRAL)

CIRCULATORON BOILER

(IF ATTACHED)

L1

C2

L2

TACOZONE

CONTROL

HONEYWELL L8148J OR EQUAL

120 VACINPUT

C1


END SWITCH

B1 B3

ZTP

B2

MILLI-VOLTAGE

GASVALVE

OR

L1 L2B2C2

B1

L1(HOT)

L2(NEUTRAL)

OIL BURNERAND

IGNITION

CIRCULATORON BOILER

(IF ATTACHED)

T T FF

TACOZONE

CONTROL

HONEYWELL L8182D OR EQUAL

120 VACINPUT

ZC

ZR

END SWITCH

C1

CAD CELL

Aquastat Wiring

L1 L2 T T

L1(HOT)

L2(NEUTRAL)


OR GAS VALVE

CIRCULATORON BOILER

(IF ATTACHED)

B2 C2 B1ZR

TACOSWITCHING

RELAY

HONEYWELL L8124A & C OR EQUAL

120 VACINPUT

C1 ZC

ZC ZR N HTTHERMOSTAT

(IF INDEPENDENT ZONE)

73

TV T Z

L1(HOT)

CIRCULATORON BOILER

(IF ATTACHED)

B2C2

B1

C1

HONEYWELL L8124G & L OR EQUAL

120 VACINPUT

ZR

L1

L2(NEUTRAL)

L2

ZC

LINEVOLTAGE

OIL BURNERRELAY OR

GAS VALVE

TACOSWITCHING

RELAY

ZC ZR N H

T THERMOSTAT(IF INDEPENDENT ZONE)

L1 L2 T T

L1(HOT)

L2(NEUTRAL)


OR GAS VALVE

CIRCULATORON BOILER

(IF ATTACHED)

B2 C2 B1ZR

TACOSWITCHING

RELAY

HONEYWELL L8124M OR EQUAL

120 VACINPUT

C1 ZC

ZC ZR N HTTHERMOSTAT

(IF INDEPENDENT ZONE)

Aquastat Wiring


OR GAS VALVE

CIRCULATORON BOILER

(IF ATTACHED)

C1

B2

B1

HONEYWELL L8148A OR EQUAL

C2

3

L1 L2 T T

L1(HOT)

L2(NEUTRAL)

TACOSWITCHING

RELAY

120 VACINPUT

ZC ZR N HT

THERMOSTAT(IF INDEPENDENT ZONE)

R

W

BB

RL6006LOWLIMIT

CONTROLERB2

74

L1 L2B2C2

B1

L1(HOT)

L2(NEUTRAL)

OIL BURNERAND

IGNITION

CIRCULATORON BOILER

(IF ATTACHED)

T T FF

HONEYWELL L8182D OR EQUAL

120 VACINPUT

ZC

ZR

C1

CAD CELL

TACOSWITCHING

RELAY

ZC ZR N H

TTHERMOSTAT

(IF INDEPENDENTZONE)

75

Standard Terms and Definitions

Switching Relay: Transformer and relay in one box, which allows a low voltage thermostat to control a line voltage load (circulator),with an isolated end switch that can energize the boiler.

Zone Valve Control: Transformer and relay in one box, which allows a low voltage thermostat to control a low voltage zone valve, withan isolated end switch that can energize the boiler and/or circulators.

Dry Contacts: Set of relay contacts that make and beak, where no voltage is present. Usually can switch 24 or 120 VAC.

Isolated End Set Switch: Set of dry contacts that make when a zone calls for heat. Usually connected to a boiler’s aquastat TT.

Mode Switch: Switch set to NORMAL – When any zone calls for heat, the end switch will make and fire the boiler.Switch set to RESET – When any zone calls for heat, a heat demand signal is given to external add-on reset control and it controlsboiler operation.Also when the priority zone calls for heat and is switched to priority, the end switch will override reset control andfire boiler to high limit.

TT: Where thermostat or aquastat connects on a heating control.

XX: Denotes Isolated End Switch.

Low Voltage: 24 VAC for most HVAC systems.

Line Voltage: Normally 120 VAC relative to ground.

H or L1: Hot side of line voltage.

N or L2: Neutral side of line voltage.

ZR: 120 VAC (Hot) signal from switching relay to boiler’s operating aquastat to fire the burner to high limit when any zone calls forheat. Also ideal for controlling primary circulator.

ZC: 120 VAC (Hot) signal from boiler’s operating aquastat to switching relay allowing circulator(s) to run when aquastat is above theset low limit.

Cold Start: A boiler that fires only when there is a call for heat.

Tankless Coil: A method of heating domestic water utilizing a heat exchanger inside a boiler.The boiler also maintains heat year roundto deliver hot water on demand.

DHW Heater: A method of heating domestic water utilizing a heat exchanger and storage tank.

Transformer: A component for increasing or reducing AC voltage. Rated in VA (volts x amps).

OHMS Law: Example: A 24 volt, 40 VA transformer can produce how much current?

Current = VA / Voltage 40 / 24 = 1.6 Amps

I = E/R where I = Current in AmpsR = E/I R = Resistance in OhmsE = I x R E = Volts

W = E x I W = Watts or VAI = W(VA)/E

RELAY CONTACTS:

N/C: Normally closed connection of a relay, when not energized.N/O: Normally open connection of a relay, when not energized.Com: The common terminal for normally open and normally closed.Pole: The number of independent circuits of a switch or relay.

Throw: The number of settings which a switch or relay can have.

DPDT = Double Pole Double Throw

N/O N/C N/C N/O3 4 4 6 6 5

COM COM

76 TACO Zone Controls Cross-Reference

TACO ARGO ERIE HONEYWELL WHITE-ROGERS

SWITCHING RELAYS

1 Zone Switching Relay (DPDT) SR501 AR821 (1), AR822 SR100 RA89A (2), RA845A (1), RA832A (1) 889-189 (2), 829-845 (1)1 Zone Switching Relay Replacement PC Board (DTSP) SR501-845RP2 Zone Switching Relay with Priority SR502 AR-861-2 (3) SR2013 Zone Switching Relay with Priority SR503 AR-861-3 (3) SR301 R8888A10074 Zone Switching Relay with Priority SR504 AR-842 SR601 R8888B10056 Zone Switching Relay with Priority SR506 AR-866 SR601 (4)

SWITCHING RELAYSWITH POWERPORT OPTIONS

3 Zone Switching Relay with Priority and 3 Power Ports SR503-EXP ARM-861-DP (5,6),ARM-3P4 Zone Switching Relay with Priority and 3 Power Ports SR504-EXP ARM-842-DP (5,6),ARM-4P6 Zone Switching Relay with Priority and 3 Power Ports SR506-EXP ARM-866-DP (5,6),ARM-6P

ZONE VALVE CONTROLS

3 Zone Valve Control ZVC403 (7) AZ-3 R8889A10144 Zone Valve Control with Priority ZVC404 (7) AZ-4P R8889B10125 Zone Valve Control ZVC405 (7) AZ-5 VL500 (8)6 Zone Valve Control with Priority ZVC406 (7) AZ-6P VL500 (8)

ZONE VALVE CONTROLSWITH POWERPORT OPTIONS

4 Zone Valve Control with Priority and 2 Power Ports ZVC404-EXP6 Zone Valve Control with Priority and 2 Power Ports ZVC406-EXP

PLUG IN POWERPORT CARDS

Post Purge Timer Plug-In Card PC600Priority Protection Plug-In Card PC605 DPM-1Universal Timer/Pump Exercize Plug-In Card PC610

77

TACO Zone Controls Cross-Reference (Continued)

TACO ARGO ERIE HONEYWELL WHITE-ROGERS

ADD-ON POWER CONTROLS

Boiler Reset Control PC700 DPM-2 BB12002-Stage Boiler Reset Control PC702Variable Speed Pump Injection Mixing Control PC705 BB3000

FAN CONTROLS

1 Zone Hydro Air Fan Control (1 or 2 Speed) HAFC101 ARH-1,ARH-2,ARH-3 WA3001 Zone Hydro Air Fan Control with Time Delays (1 or 2 Speed) HAFC201

REPLACEMENT PARTS

24 Volt Replacement Relay SR024-001RP R-35 EXP10120 Volt Replacement Relay SR120-001RP R-49

NOTES:

1. Does not have both normally open and normally closed contacts.2. Has only one set of normally open contacts (SPST).3. Does not have optional priority.4. Can be expanded to five and six zones with the addition of EXP10 relays.5. Argo ARM units are expandable to 10 zones using special controls (ARM-1,ARM-4) with a phone jack.

TACO switching relays can be expanded up to 20 zones using any combination of -EXP models with no special connections.6. Includes only one data port for adding data port modules.7. All TACO zone valve controls include an extra set of dry contacts (N/O, Common, N/C).8. VL500 is only 5 zones, 4 normal and 1 priority.



Printed in USA

Copyright 2003

TACO, Inc.

Date post:	10-May-2018
Category:	Documents
Upload:	phamthuy
View:	239 times
Download:	0 times

TACO ZONE CONTROLS WIRING GUIDE - Pexheat.com · taco zone controls wiring guide pages ... zone 1...

Documents