Sales and Engineering Data ED 19015-1€¦ · Object Identifier data type. The first part...

Sales and Engineering Data ED 19015-1Group: ControlsPart Number: ED 19015Date: October 2013Supercedes: ED 19015

MicroTech® III Loop Water ControllerProtocol Information BACnet® Networks

ED 19015-1 • LOOP WATER CONTROLLER 2 www.DaikinApplied.com

Table of ConTenTs

Table of ConTenTs

Publication Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Software Revision . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Reference Documents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Notice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Limited Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5Unit Controller Data Points . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

Protocol Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

BACnet Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

Basic Protocol Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6Setting Unit Controller Communications Parameters . . . . . . . . . . . .6

Communication Setup Parameter Settings . . . . . . . . . . . . . . . . . .6

BACnet Networks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

BACnet Objects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Object Identifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

Property Identifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

Property Name . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

Full Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

Enumerated Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

MicroTech III Unit Controller Device Object . . . . . . . . . . . . . . . . . . .8Device Object Identifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

Device Object Name . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

Device Object Properties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

Network Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

Access to Properties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

Configuring the Unit Controller . . . . . . . . . . . . . . . . . . . . . . . . . . .8

BACnet MS/TP Network Addressing . . . . . . . . . . . . . . . . . . . . . . .8

Typical Application: Minimum Integration . . . . . . . . . . . . . . . . . . .10Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

Notification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

Clearing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

Unit Controller Sequence of Operation . . . . . . . . . . . . . . . . . . . . . .10

Comprehensive Data Point Tables . . . . . . . . . . . . . . . . . . . . . . . . . . 11BACnet Standard Objects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Detailed Data Point Information . . . . . . . . . . . . . . . . . . . . . . . . . . . .15Active Heat Addition Stages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

Active Heat Rejection Stages . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

Application Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

Application Version . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

Boiler Deadband . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

Boiler Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

Boiler Return Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

Boiler Setpoint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

Boiler Supply Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

Boiler Valve Position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

Clear Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

Control Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

Control Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

Current State . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

Damper Interlock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

Effective Boiler Setpoint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

Geothermal Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

Head Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

Heat Addition Stage Differentials . . . . . . . . . . . . . . . . . . . . . . . . . . .19

Heat Addition Stage Setpoints . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

Heat Addition Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

Heat Exchanger Return Temperature . . . . . . . . . . . . . . . . . . . . . . .21

Heat Exchanger Supply Temperature . . . . . . . . . . . . . . . . . . . . . . .21

Heat Rejection Stage Differentials. . . . . . . . . . . . . . . . . . . . . . . . . .22

Heat Rejection Stage Setpoints . . . . . . . . . . . . . . . . . . . . . . . . . . .23

Heat Rejection Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

Lead Pump Select . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

Lead Secondary Pump Select . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

Local Outdoor Air Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

Loop Return Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

Loop Return Temperature (Problem) . . . . . . . . . . . . . . . . . . . . . . . .25

Loop Supply Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

Main Loop Capacity - Network . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

Main Loop Control Select . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

Max OA Reset @ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

Maximum Control Temp Range . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

Minimum Control Temp Range . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

Network Outdoor Air Temperature . . . . . . . . . . . . . . . . . . . . . . . . . .26

Occupancy Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27

Outdoor Air Humidity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27

Outdoor Air Reset Max Reset Amount . . . . . . . . . . . . . . . . . . . . . .27

Outdoor Air Reset Max Setpoint . . . . . . . . . . . . . . . . . . . . . . . . . . .27

Outdoor Air Reset Max Setpoint @ . . . . . . . . . . . . . . . . . . . . . . . . .27

Outdoor Air Reset Min Setpoint . . . . . . . . . . . . . . . . . . . . . . . . . . .27

Outdoor Air Reset Min Setpoint @ . . . . . . . . . . . . . . . . . . . . . . . . .28

Outdoor Air Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

PreCool Differential . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

PreCool Enable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

PreCool Outdoor Air Setpoint . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

PreCool Setpoint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

PreCool Stages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29

PreHeat Differential . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29

PreHeat Enable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29

PreHeat Outdoor Air Setpoint . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29

PreHeat Setpoint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29

PreHeat Stages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

Pump 1 Flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

Pump 1 Hours . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

Pump 2 Flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

Table of ConTenTs

www.DaikinApplied.com 3 ED 19015-1 • LOOP WATER CONTROLLER

Pump 2 Hours . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

Pump Fail Delay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

Recirc Timer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31

Secondary Pump 1 Flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31

Secondary Pump 1 Hours . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31

Secondary Pump 2 Flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31

Secondary Pump 2 Hours . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31

Stage Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31

Storage Tank Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32

Sump Dump Day . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32

Sump Dump Month . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32

Sump Dump Deadband . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32

Sump Dump Select . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

Sump Dump Setpoint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

Sump Fill Day . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

Sump Fill Month . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

Tower Deadband . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34

Tower Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34

Tower Fan Enable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34

Tower Fan Speed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34

Tower Return Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34

Tower Setpoint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34

Tower Supply Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35

Unit State . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35

Unit Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35

Zero OA Reset @ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35

Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36Fault Alarms (Highest Priority) . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36

Problem Alarms (Medium Priority) . . . . . . . . . . . . . . . . . . . . . . . . . .36

Warning Alarms (Lowest Priority) . . . . . . . . . . . . . . . . . . . . . . . . . .37

Alarm Monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37

BACnet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37

Alarm Notification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38

Recipient List Property . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39

Notification Class - Faults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40

Notification Class - Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40

Notification Class - Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41

Alarm Value . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42

Warning Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42

Problem Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43

Fault Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43

Boiler Pumps Fail Problem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44

Emergency Stop Fault . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44

Main Loop Pump 1 Fail . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44

Main Loop Pump 2 Fail . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44

Main Loop Pump Shut Down Fault . . . . . . . . . . . . . . . . . . . . . . . . .44

Main Loop Switch 1 Stuck Fail . . . . . . . . . . . . . . . . . . . . . . . . . . . .44

Main Loop Switch 2 Stuck Fail . . . . . . . . . . . . . . . . . . . . . . . . . . . .45

Pump 1 Manual Fail . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45

Pump 2 Manual Fail . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45

Secondary Loop Pump 1 Fail . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45

Secondary Loop Pump 2 Fail . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45

Secondary Loop Switch 1 Stick Fail . . . . . . . . . . . . . . . . . . . . . . . .45

Secondary Loop Switch 2 Stick Fail . . . . . . . . . . . . . . . . . . . . . . . .46

Secondary Pump 1 Manual Fail . . . . . . . . . . . . . . . . . . . . . . . . . . .46

Secondary Pump 2 Manual Fail . . . . . . . . . . . . . . . . . . . . . . . . . . .46

Tower Pumps Fail Problem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46

UnoccLimProtect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46

BACnet Device Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47DeviceCommunicationControl - Disable . . . . . . . . . . . . . . . . . . .47

DeviceCommunicationControl - Enable . . . . . . . . . . . . . . . . . . .47

ReinitializeDevice (Reset) . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47

BACnet File Objects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48BACnet Client Config File . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48

BACnet COV Config File . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48

Error Log File . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48

History Log File . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48

BACnet Event Enrollment Config File . . . . . . . . . . . . . . . . . . . . . . .48

EDE File . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48

EDE File – State Text . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48

Appendix A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49Protocol Implementation Conformance Statement (PICS) . . . . . . .49

BACnet Protocol Implementation Conformance Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49

Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49

BACnet Standardized Device Profile . . . . . . . . . . . . . . . . . . . . . .49

BACnet Interoperability Building Blocks (BIBBs) Supported . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49

Standard Object Types Supported . . . . . . . . . . . . . . . . . . . . . . . . .50

Data Link Layer Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52

Segmentation Capability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52

Device Address Binding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52

Networking Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52

Character Sets Supported . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52


PubliCaTion informaTion

PubliCaTion informaTion

Revision HistoryED19015 March 2012 Preliminary release.

ED19015-1 November 2012 Added Effective Boiler Setpoint (Analog Value 96). Also updated Heat Addition Status and Heat Rejection status to show that None now means you are not configured for staged heat addition/rejection or valve control.

Software RevisionKeypad Menu Path Daikin LWC\Version Information\App Version=

The software part number is encoded in the controller’s memory and is available for display on the keypad/display. The part number is available via BACnet® system integration tools. The software part number codification is as follows:

250 8090 01 1

Implied digits on all MicroTech III Generic I/O Controllers Base part number (8022 indicates standard software) Version Revision

This edition documents Network Protocols for version 2508090011 of the standard MicroTech® III Unit Controller application and all subsequent versions until otherwise indicated. However, if your software is of a later version, some of the information in this document may not completely describe your application.

You can determine the revision of the application software from the keypad/display. The path for this information from the main menu is Daikin LWC\Version Information\App Version=.

Reference DocumentsCompany Number Title SourceDaikin Applied IOM 1150 MicroTech III Loop Water Controller Installation & Operation Manual www.DaikinApplied.comAmerican Society of Heating, Refrigerating and Air-Conditioning Engineers

ANSI/ASHRAE 135-2008

BACnet A Data Communication Protocol for Building Automation and Control Networks www.ashrae.org

Notice© 2013 Daikin Applied, Minneapolis MN. All rights reserved throughout the world

Daikin Applied reserves the right to change any information contained herein without prior notice. The user is responsible for determining whether this product is appropriate for his or her application.

™ ® The following are trademarks or registered trademarks of their respective companies: BACnet from American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc. Echelon, LONWORKS, LONMARK, and LonTalk from Echelon Corporation, Windows from Microsoft Corporation, and Daikin Applied, Maverick II and MicroTech III from Daikin.

Limited WarrantyConsult your local Daikin Representative for warranty details. To find your local Daikin Representative, go to www.DaikinApplied.com.

inTroduCTion


inTroduCTion

This document contains the necessary information you need to incorporate a MicroTech III Unit Controller (i.e. Loop Water Controller Unit) from Daikin Applied into a building automation system (BAS). It lists all BACnet properties, and corresponding MicroTech III Unit Controller data points. It also contains the BACnet Protocol Implementation Conformance Statement (PICS). BACnet terms are not defined. Refer to the respective specifications for definitions and details.

Unit Controller Data PointsThe MicroTech III Unit Controller contains data points or unit variables that are accessible from three user interfaces: the unit keypad, a BACnet network (BACnet/IP or MS/TP). Not all points are accessible from each interface. This manual lists all important data points and the corresponding path for each applicable interface. Refer to IOM 1150 (available on www.DaikinApplied.com) for keypad details. This document contains the network details necessary to incorporate the MicroTech III Unit Controller into the network.

Protocol DefinitionsThe MicroTech III Unit Controller can be configured in an interoperable BACnet network. The controller must have a BACnet MS/TP communication module installed for network integration.

BACnet ProtocolBACnet is a standard communication protocol for Building Automation and Control Networks developed by the American National Standards Institute (ANSI) and American Society of Heating, Refrigeration and Air-conditioning Engineers (ASHRAE) specified in ANSI/ASHRAE standard 135-2008. It addresses all aspects of the various systems that are applied to building control systems. BACnet provides the communication infrastructure needed to integrate products manufactured by different vendors and to integrate building services that are now independent.


basiC ProToCol informaTion


Setting Unit Controller Communications ParametersThere are 7 communication parameters involved in setting up the unit controller for proper communication BACnet MS/TP. The table below lists possible sets of default parameter settings. The bold parameters can be changed using the keypad display located on the unit controller.

Communication Setup Parameter Settings

Parameter Name BACnet MS/TPMSTP MAC Address1 18

MSTP Baud Rate 38400Device Instance Number variable

Max APDU Length 480Device Object Name POL904_AD45EC282

Max Master 127Max Info Frames 1

NOTES:1. The MSTP MAC Address is set via the keypad/display. You must cycle

power after changing it for the changes to take effect.2. The last 8 digits are computed from the production number and date code.

BACnet NetworksCompatibilityThe MicroTech III Unit Controller is tested according to the BACnet Testing Laboratory (BTL) Test Plan. It is designed to meet the requirements of the BACnet Standard (ANSI/ASHRAE 135-2008) as stated in the Protocol Implementation and Conformance Statement (PICS). However, it is not BTL listed. The PICS is located at the end of this manual.

BACnet ObjectsMicroTech III Unit Controllers incorporate standard BACnet object types (i.e., object types defined in the BACnet Standard) that conform to the BACnet Standard. Each object has properties that control unit variables or data points. Some object types occur more than once in the MicroTech III Unit Controller; each occurrence or instance has different properties and controls different unit variables or data points. Each instance is designated with a unique instance index. Some properties can be adjusted (read/write properties, e.g., setpoints) from the network and others can only be interrogated (read-only properties, e.g., status information).

Each data point accessible from a BACnet network is described with a table that gives the Object Identifier, Property Identifier, Full BACnet Reference or path, and the Name enumeration of the property.

Example of BACnet Data PointKeypad Menu Path MainOverivew\Unit Status\Blr Return Temp=

Measurement Units Data Type Valid Range Default Value

Temperature °F / °C Real -50.0–249.998°F-45.56–121.11°C N/A

BACnetObject Identifier Property

Object Type Type ID Instance Name IDAnalog Input 0 4 Present_Value 85

Full Reference<Device Name>.BoilerReturnTemp.Present_Value



Object IdentifierObject Identifiers are each designated with an Object type as defined in the BACnet specification. The first column of the data point definition gives the object type. This object happens to be Boiler Return Temperature (See page 16.)

The object identifier is a property of the object that you can read from the object. The name of the property is “Object_Identifier” and the property identifier is 75.

Each object in the unit controller has a unique identifier. BACnet object identifiers are two-part numbers of BACnet Object Identifier data type. The first part identifies the object type (the first 10 bits of the 32-bit BACnet Object Identifier [See ANSI/ASHRAE 135-2008 BACnet A Data Communication Protocol for Building Automation and Control Networks]). The first column of the data point definition gives the object type. The second part identifies the instances of that particular object type (the last 22 bits of the 32-bit BACnet Object Identifier).

The object identifier is shown in the data points listing as two numbers. The first number is shown in the Type ID column and designates the Object type enumeration. The second number is shown in the Instance column and designates the instance of that particular object type.

The object identifier is a property of the object that you can read from the object code. The name of the property is “Object_Identifier” and the property identifier is 75. The ASHRAE BACnet specification reserves the first 128 numbers for ASHRAE defined objects. Manufacturers may define additional object types and assign a number above 127 as long as they conform to the requirements of the ASHRAE BACnet specification.

Each object also has a name. Object names are character strings. The object name is a property of the object that you can read from the object. The name of the property is “Object_Name” and the property identifier is 77.

Objects are sometimes referred to as an object type and instance number as they are in the BACnet specification. The example object above would be: Analog Input, Instance 4.

Property IdentifierEach object has a number of properties or attributes. Each property has a unique identifier of BACnet Property Identifier data type. Property identifiers are an enumerated set; a number identifies each member. The Property Identifier enumeration number is shown in the Property ID column. In the example above the property identifier is 85.

Property NameEach property also has a unique name. Property names are character strings and shown in the Property Name column. In the example above the property name is Present Value.

Full ReferenceThe full reference is the path of the property within the network where the MicroTech III Unit Controller resides. It is a character string equivalent to the object identifier and the property identifier. In the example above the full reference is <Device Name>.BoilerReturnTemp.Present_Value.

Enumerated ValuesSome properties are standard data types and some are enumerated sets. If the property value is an enumerated set, all enumerated values and corresponding meaning are given in the Enumeration column of the data point listing.


miCroTeCh iii uniT ConTroller deviCe objeCT


Each BACnet compatible device must have one and only one BACnet Device Object.

Device Object IdentifierThe MicroTech III Unit Controller Device Object Identifier uniquely specifies the unit within the network. The device object type for all devices is fixed by ASHRAE at 8. Therefore the device object instance number must be unique. The initial Device Object identifier is set at manufacturing. The device object identifier can be read from the unit controller. The name of the property is “Object_Identifier” and the property identifier is 75.

The initial device object instance number is 0. This number must be unique on the entire BACnet network. The object instance number can be changed via the keypad display. You must cycle power for the change to take effect.

CAUTIONIf another device in the network already has this object identifier (instance number), you must change the instance number of one device object, so that all devices in the network have a unique device identifier.

Device Object NameThe Device Object Name uniquely specifies a device in the network. It must be unique in the network. The device name for the MicroTech III Unit Controller device is to be determined. The device name is the “prefix” of all object names in the MicroTech III Unit Controller. All objects include the device name and a period “.” preceding the object name.

The Device Object name is also available to the network in the device. The property name is “Object_Name” and property identifier is 77. The default Object Name is POL904_######## where ######## is computed from the production number and date code.

Device Object PropertiesThe device object contains many other informative properties as shown in Table 1.

Network ConsiderationsAccess to PropertiesObject properties are accessible from the network by specifying the device object identifier, object identifier, and the property identifier. To access a property, you must specify the object identifier including the device object identifier or the object name including the device object name and the property identifier.

Configuring the Unit ControllerThe MicroTech III Unit Controller with attached BACnet communication module is ready to operate with the default values of the various parameters. Default values may be changed with the unit’s keypad or via the network. See the MicroTech III Unit Controller Installation & Operation Manual (IOM 1150).

BACnet MS/TP Network AddressingThe BACnet MS/TP device address (Media Access Control [MAC] address) of the MicroTech III Loop Water Unit Controller in a BACnet Master Slave/Token Passing (MS/TP) Local Area Network (LAN) is set using the keypad/display. Navigate to the Advanced Menus\MSTP Setup menu to change this value. You must cycle power (turn the unit controller off and then on again) in order for the new address to take effect.



Table 1: MicroTech III Loop Water Controller Device Object Properties

Property Identifier Default Value Data TypeObject Identifier 75 Device, variable BACnetObjectIdentifier

Object Name 77 POL908_FF2BEE1 Character StringObject Type 79 8 BACnetObjectType

System Status 112 BACnetDeviceStatusVendor Name 121 Daikin Applied Character String

Vendor Identifier 120 3 Unsigned 16Model Name 70 MTIII_LWC Character String

Firmware Version 44 variable Character StringApplication Software Revision 12 variable Character String

Location 58 Character StringDescription 28 MTIII_LWC Character String

Protocol Version 98 1 UnsignedProtocol Revision 139 6 Unsigned

Protocol Services Supported 97 BACnetServicesSupported

Protocol Object Types Supported2 96 AI, AO, AV, BI, BO, BV, Cal, Device, MSI, MSO, NC, Sch, MSV BACnetObjectTypesSupported

Object List 76 Sequence of BACnetObjectIdentiferMax APDU Length Accepted 62 480 Unsigned 16

Segmentation Supported 107 Segmentation-both (0) BACnetSegmentationMax Segments Accepted 167 16 Unsigned

Local Time3 57 variable TimeLocal Date3 56 variable DateUTC Offset 119 -120 (Range: –780 .. 780) Integer

Daylight Savings Status 24 variable BooleanAPDU Segment Timeout 10 2000 Unsigned

APDU Timeout 11 3000 UnsignedNumber of APDU Retries 73 3 UnsignedDevice Address Binding 30 Sequence of BACnetAddressBinding

Database Revision 115 1 UnsignedActive COV Subscriptions 152 List of BACnetCOVSubsriptions

1. The last 8 digit are computed from the production number printed on the bar code label affixed to the side of the module.2. While the MicroTech III Unit Controller supports the entire set of object types, not all object types are used. See the Object List for details.3. The BACnet communication module and the MicroTech III Unit Controller both have their own time clocks. The date and time read via BACnet could differ from the date and time in the unit

controller the date or time is changed via the keypad display. The two time clocks resynchronize approximately every 60-68 minutes and after every power cycle of the unit controller or BACnet communication module.


TyPiCal aPPliCaTion: minimum inTegraTion

TyPiCal aPPliCaTion: minimum inTegraTion

This section gives you the basic information and outlines a procedure to set up the unit for network control.

AlarmsAlarms in a MicroTech III Unit Controller are divided into three classes: Faults, Problems, and Warnings.

• Fault Alarms have the highest priority. • Problem Alarms have medium priority. • Warning Alarms have the lowest priority.

NotificationMicroTech III Unit Controllers may have their alarms monitored by one of three methods: 1) Alarm value using one BACnet Analog Value, 2) Alarm class, or 3) Notification Classes.

1. To monitor alarms by alarm value, read the Present_Value property of the Alarm Value Analog Value object. The Present_Value displays a value that corresponds to the highest priority alarm that is active. It is possible to have multiple active alarms, but only the highest priority is displayed. For example, if there is a simultaneous Main Pump 1 Switch Stuck Warning (value of 56) and a Emergency Stop Fault (value of 250), then the Emergency Stop Fault value of 250 will display in the Present_Value because it is the higher priority alarm of the two. Once the Emergency Stop Fault condition is corrected and the fault is cleared, the next priority active alarm value (in this example, value of 56 for Main Pump 1 Switch Stuck Warning alarm) is displayed. The values for all alarms are described in the Alarms section tables. If the Present_Value displays a zero, there are no active alarms.

2. To monitor alarms by alarm class, read the Present_Value of the appropriate Analog Value object (Warnings, Problems and Faults). The Present_Value displays a value that corresponds to the highest priority alarm that is active for that particular alarm class. It is possible to have multiple active alarms, but only the highest priority is displayed.

3. To monitor alarms using the Notification Class objects, see the Alarm Notification section.

ClearingMicroTech III Unit Controllers have one Multi-State Value objects that can be used to clear alarms; ClearAlarms (See page 17). All alarms of a particular class may be cleared by writing the appropriate value to the Present Value property of ClearAlarms (2=ClearAllFaults, 3=ClearAllProblems, 4=ClearAllWarnings). All alarms of all three classes can be cleared by writing a 5 (ClearAllAlarms) to Present_Value. Once the alarms are cleared, the Present_Value of this object goes back to None (1).

Unit Controller Sequence of OperationRefer to the MicroTech III Unit Controller Installation & Operation Manual (IOM 1150) for sequence of operation details, including keypad operation.

ComPrehensive daTa PoinT Tables



These comprehensive data point tables contain the significant parameters of specific data points.

BACnet Standard ObjectsNetwork Control Property Details on

PageRead(R), Write(W), Commandable(C)

Object Type Instance Description

Device Object

Application Version 15 R Device * Read the Application_Software_Version property. This is the version of the software loaded in the MTIII unit controller.

Analog InputsLoop Supply Temperature 25 R AI 1 Current reading of sensorLoop Return Temperature 25 R AI 2 Current reading of sensorBoiler Supply Temperature 16 R AI 3 Current reading of sensorBoiler Return Temperature 16 R AI 4 Current reading of sensorLocal Outdoor Air Temperature 24 R AI 5 Current reading of sensorTower Supply Temperature 35 R AI 6 Current reading of sensorTower Return Temperature 34 R AI 7 Current reading of sensorStorage Tank Temperature 32 R AI 8 Current reading of sensorHead Pressure 18 R AI 9 psiOutdoor Air Humidity 27 R AI 10 %

Loop Return Temperature (Problem) 25 R AI 11Current reading of sensor. The Present Value of this object is the same as AI2. The only difference is that this object is used for intrinsic reporting of the return air temperature sensor, high and low problems when the control temperature is not set to return.

Geothermal Temperature 18 R AI 13 Current reading of sensorHeat Exchanger Supply Temperature 21 R AI 14 Current reading of sensor

Heat Exchanger Return Temperature 21 R AI 15 Current reading of sensor

Analog ValuesOutdoor Air Reset Max Setpoint 27 W AV 1 °F/°CHeat Addition Stage Setpoints 20 W Supply control temperature at which the LWC is to energize the

corresponding heat stage output. (F/°C)Stage 1 Setpoint AV 2Stage 2 Setpoint AV 3Stage 3 Setpoint AV 4Stage 4 Setpoint AV 5Stage 5 Setpoint AV 6Stage 6 Setpoint AV 7Stage 7 Setpoint AV 8Stage 8 Setpoint AV 9Stage 9 Setpoint AV 10

Stage 10 Setpoint AV 11Stage 11 Setpoint AV 12Stage 12 Setpoint AV 13

Heat Addition Stage Differentials 19 W “Differential” is subtracted from the the corresponding Cool Stage Setpoint to determine the temperature at which the stage is turned OFF.Stage 1 Differential AV 14

Stage 2 Differential AV 15Stage 3 Differential AV 16Stage 4 Differential AV 17Stage 5 Differential AV 18Stage 6 Differential AV 19Stage 7 Differential AV 20Stage 8 Differential AV 21Stage 9 Differential AV 22

Stage 10 Differential AV 23Stage 11 Differential AV 24Stage 12 Differential AV 25

Heat Rejection Stage Setpoints 23 W Loop control temperature at which the LWC is to energize the corresponding cool stage output. (F/°C)Stage 1 Setpoint AV 26

Stage 2 Setpoint AV 27Stage 3 Setpoint AV 28Stage 4 Setpoint AV 29Stage 5 Setpoint AV 30Stage 6 Setpoint AV 31Stage 7 Setpoint AV 32Stage 8 Setpoint AV 33Stage 9 Setpoint AV 34

Stage 10 Setpoint AV 35Stage 11 Setpoint AV 36Stage 12 Setpoint AV 37



Network Control Property Details on Page

Read(R), Write(W), Commandable(C)


Heat Rejection Stage Differentials 22 W “Differential” is subtracted from the the corresponding Cool Stage Setpoint to determine the temperature at which the stage is turned OFF.Stage 1 Differential AV 38

Stage 2 Differential AV 39Stage 3 Differential AV 40Stage 4 Differential AV 41Stage 5 Differential AV 42Stage 6 Differential AV 43Stage 7 Differential AV 44Stage 8 Differential AV 45Stage 9 Differential AV 46

Stage 10 Differential AV 47Stage 11 Differential AV 48Stage 12 Differential AV 49

Pump 1 Hours 30 W AV 52Pump 2 Hours 30 W AV 53Secondary Pump 1 Hours 31 W AV 54Secondary Pump 2 Hours 31 W AV 55Tower Setpoint 34 W AV 56 °F/°CBoiler Setpoint 16 W AV 57 °F/°C

PreHeat Setpoint 29 W AV 58The temperature at which preheat will turn OFF. Also used to determine one of the conditions that will allow the preheat addition stages to turn ON.

PreHeat Differential 29 W AV 59

PreHeat Outdoor Air Setpoint 29 W AV 60The Outdoor air temperature at which pre-cool will turn OFF. Also used to determine the conditions that will allow the precool heat rejections stages to turn ON.

PreCool Setpoint 28 W AV 61The loop water temperature at which pre-cool will turn OFF. Also used to determine the conditions that will allow the precool heat rejections stages to turn ON.

PreCool Differential 28 W AV 62PreCool Outdoor Air Setpoint 28 W AV 63 °F/°CTower Fan Speed 34 R AV 64 Indicates current percentage of tower fan speed.Boiler Valve Position 16 R AV 65 Indicates current percentage of boiler valve capacity.

Alarm Value 42 R AV 66

24=UnoccLimProtect, 28=SecPump2Manual, 32=SecPump1Manual, 36=Pump2Manual, 40=Pump1Manual, 44=SecLpSw2Stick, 48=SecLpSw1Stick, 50=SecPump2Fail, 51=SecPump1Fail, 52=MainPmp2SwStuck, 56= MainPmp1SwStuck, 60=TowerReturnTempFail, 61=TowerSupplyTempFail, 65=StorageTankTempFail, 68=GeothermalTempFail, 70=BoilerSupplyTempFail, 71=BoilerReturnTempFail, 75=HeatXchrRATempFail, 76=HeatXchrSupplyTempFail, 80=OAHumiditySensFail, 112=MainPump2Fail, 116=MainPump1Fail, 120=BoilerPumpsFail, 122=TowerPumpsFail, 124=LoRATProb, 128=HiRATProb, 132=RATSensorProb, 204=HiLoopSupplyTemp, 205=LoRATFlt, 206=HiRATFlt, 208=LoSupplyTmpFlt, 209=HeadPressSensFlt, 210=LoHeadPressure, 212=HiHeadPressure, 232=OutsideAirSensFault, 235=LpReturnSensFlt, 238=LpSupplySensFlt, 248=MainLpPumpFail, 250=EmergStop

Warning Alarm 37 R AV 67

24=UnoccLimProtect, 28=SecPump2Manual, 32=SecPump1Manual, 36=Pump2Manual, 40=Pump1Manual, 44=SecLpSw2Stick, 48=SecLpSw1Stick, 50=SecPump2Fail, 51=SecPump1Fail, 52=MainPmp2SwStuck, 56=MainPmp1SwStuck, 60=TowerReturnTempFail, 61=TowerSupplyTempFail, 65=StorageTankTempFail, 68=GeothermalTempFail, 70=BoilerSupplyTempFail, 71=BoilerReturnTempFail, 75=HeatXchrRATempFail, 76=HeatXchrSupplyTempFail, 80=OAHumiditySensFail

Fault Alarm 36 R AV 68

204= HiLoopSupplyTemp, 205=LoRATFlt, 206=HiRATFlt, 208=LoSupplyTmpFlt, 209=HeadPressSensFlt, 210=LoHeadPressure, 212=HiHeadPressure, 232=OutsideAirSensFault, 235=LpReturnSensFlt, 238=LpSupplySensFlt, 248=MainLpPumpFail, 250=EmergStop

Stage Time 31 W AV 69Boiler Deadband 15 W AV 70

Boiler Range 15 W AV 71 Used to calculate the gain used in the PI control function that modules that boiler valve.

Tower Deadband 34 W AV 72

Tower Range 34 W AV 73 Used to calculate the gain used in the PI control function that modules that tower valve.

Recirc Timer 31 W AV 74Zero OA Reset @ 35 W AV 75Max OA Reset @ 25 W AV 76Pump Fail Delay 30 W AV 77

Control Temperature 17 R AV 78 This point reads the current supply or return temperature depending on which sensor is selected for control.






Main Loop Capacity - Network 25 W AV 79 Default=163.835. A value greater than 160 indicates that this property is not being set by the network. (%)

Problem Alarm 36 R AV 81112=MainPump2Fail, 116=MainPump1Fail, 120=BoilerPumpsFail, 122=TowerPumpsFail, 124=LoRATProb, 128=HiRATProb, 132=RATSensorProb

Active Heat Addition Stages 15 R AV 82 0-12Active Heat Rejection Stages 15 R AV 83 0-12Network Outdoor Air Temperature 26 W AV 84 621.806°F /327.67°C indicates network is not writing this value.

Outdoor Air Temperature 28 R AV 85

This point reads the current outdoor air temperature for control. If manual control is active, this will be the manual temperature. If a valid value is in Network Outdoor Air Temperature, this will be set to that value. Otherwise, this is set equal to the local Outdoor air temperature sensor.

Sump Dump Setpoint 33 W AV 86Sump Dump Deadband 32 W AV 87Sump Dump Day 32 W AV 88 Day of the month the sump will dump, if feature is enabled.Sump Fill Day 33 W AV 89 Day of the month the sump will fill, if feature is enabled.Outdoor Air Reset Max Reset Amount 27 W AV 90

Outdoor Air Reset Min Setpoint 27 W AV 91Outdoor Air Reset Min Setpoint @ 28 W AV 92Outdoor Air Reset Max Setpoint @ 27 W AV 93Minimum Control Temp Range 26 R AV 94Maximum Control Temp Range 26 R AV 95Effective Boiler Setpoint 17 R AV 96Binary InputsPump 1 Flow 30 R BI 2 0=OFF, 1=ONPump 2 Flow 30 R BI 3 0=OFF, 1=ONSecondary Pump 1 Flow 31 R BI 4 0=OFF, 1=ONSecondary Pump 2 Flow 31 R BI 5 0=OFF, 1=ONDamper Interlock 17 R BI 6 0=OFF, 1=ONBinary OutputsAlarm LED 36 C BO 1 0=OFF, 1=ONTower Fan Enable 34 C BO 2 0=OFF, 1=ONBinary ValuesEmergency Stop Fault 44 C BV 1 0=Normal, 1=AlarmUnoccLimProtect 46 C BV 2 0=Normal, 1=AlarmSecond Pump 2 Manual Fail 46 C BV 3 0=Normal, 1=AlarmSecond Pump 1 Manual Fail 46 C BV 4 0=Normal, 1=AlarmPump 2 Manual Fail 45 C BV 5 0=Normal, 1=AlarmPump 1 Manual Fail 45 C BV 6 0=Normal, 1=AlarmSecondary Loop Switch 2 Stick Fail 45 C BV 7 0=Normal, 1=AlarmSecondary Loop Switch 1 Stick Fail 57 C BV 8 0=Normal, 1=AlarmMain Loop Switch 2 Stuck Fail 55 C BV 9 0=Normal, 1=AlarmMain Loop Switch 1 Stuck Fail 54 C BV 10 0=Normal, 1=AlarmSecondary Loop Pump 2 Fail 45 C BV 15 0=Normal, 1=AlarmSecondary Loop Pump 1 Fail 46 C BV 16 0=Normal, 1=AlarmMain Loop Pump 2 Fail 44 C BV 17 0=Normal, 1=AlarmMain Loop Pump 1 Fail 44 C BV 18 0=Normal, 1=AlarmBoiler Pumps Fail Problem 44 C BV 20 0=Normal, 1=AlarmMain Loop Pump Shut Down Fault 44 C BV 21 0=Normal, 1=AlarmTower Pumps Fail Problem 46 C BV 22 0=Normal, 1=AlarmMultistate Values

Unit State 35 R MSV 1 1=Unocc, 2=UnoccLim, 3=Recirc, 4=Preheat, 5=PreCool, 6=ExtFlowReq, 7=Occ, 8=Alarm, 9=Manual, 10=OFF

Lead Pump Select 24 W MSV 3 1=None, 2=Pump1, 3=Pump2, 4=Auto (default)Lead Secondary Pump Select 24 W MSV 4 1=None, 2=Pump1, 3=Pump2, 4=Auto (default)PreHeat Stages 30 W MSV 5 1=None (default), 2=1, 3=2, 4=3, 5=4PreCool Stages 29 W MSV 6 1=None (default), 2=1, 3=2, 4=3, 5=4, 6=5, 7=6PreCool Enable 28 W MSV 7 1=Disabled (default), 2=EnabledPreHeat Enable 29 W MSV 8 1=Disabled (default), 2=EnabledUnit Support 35 W MSV 9 1=SI, 2=US (default)

Application Mode 15 W MSV 10 1=OFF, 2=Recirc, 3=HeatAddOnly, 4=HeatRejOnly, 5=HeatAddRej(default)

Current State 17 W MSV 11 1=Occ, 2=Unocc, 3=Auto(default)Sump Dump Select 33 W MSV 13 1=Disable, 2=Enabled (default)Main Loop Control Select 25 W MSV 14 1=Supply (default), 2=Return

Control Mode 16 R MSV 15 1=OFF, 2=Recirc, 3=HeatAddOnly, 4=HeatRejOnly, 5=HeatAddRej 6=Auto/Net (default)

Clear Alarms 16 W MSV 16 1=No, 2=ClrFlts, 3=ClrPrblms, 4=ClrWrngs, 5=ClearAllAlms.






Heat Addition Status 21 R MSV 17 1=None, 2=OffLoc, 3=OffNet, 4=Enabled, 5=Alarm.Heat Rejection Status 24 R MSV 18 1=None, 2=OffLoc, 3=OffNet, 4=Enabled, 5=Alarm

Sump Dump Month 32 W MSV 19 1=Disable, 2=Jan, 3=Feb, 4=March, 5=April, 6=May, 7=June, 8=July, 9=Aug, 10=Sept, 11=Oct, 12=Nov, 13=Dec

Sump Fill Month 33 W MSV 20 1=Disable, 2=Jan, 3=Feb, 4=March, 5=April, 6=May, 7=June, 8=July, 9=Aug, 10=Sept, 11=Oct, 12=Nov, 13=Dec

Occupancy Mode 27 W MSV 21 1=Occ, 2=Unocc, 3=Auto (default)Notification ClassNotification Class - Faults 40 W NC 1 Generates notifications for fault alarms.Notification Class - Problems 40 W NC 2 Generates notifications for problem alarms.Notification Class - Warnings 41 W NC 3 Generates notifications for warning alarms.File Objects

BACnet Client Config File 48 N/A File 1This file contains the BACnet client configuration. For this application, the controller acts as a server, so this file does not apply.

BACnet COV Config File 48 N/A File 2 This file contains the BACnet COV configuration.Error Log File 48 N/A File 3 This is the error log file for the BACnet module.History Log File 48 N/A File 4 This is the history log file for the BACnet module.BACnet Event Enrollment Config File 48 N/A File 5 This is the BACnet Event Enrollment Configuration file.

EDE File 48 N/A File 6This is the engineering data exchange file of this controller. This file details the BACnet interface of the controller. It tells you what points are available and information about each point.

EDE File – State Text 48 N/A File 7 This is the engineering data exchange file of this controller with state text.

deTailed daTa PoinT informaTion



The data points or properties (attributes) defined in this section reference data that is generated in the MicroTech III Unit Controller.

Active Heat Addition Stages Keypad Menu Path No Keypad Equivalent

This read only object indicates the current number of active heat addition stages. If the unit is not configured for any heat addition stages, this object will not be available.

Measurement Units Data Type Valid Range Default ValueStages No Units Real 0-12 N/A

Object Identifier PropertyObject Type Type ID Instance Name IDAnalog Value 2 82 Present_Value 85Full Reference<Device Name>.ActiveHeatAddStage.Present_Value

Active Heat Rejection Stages Keypad Menu Path No Keypad Equivalent

This read only object indicates the current number of active heat rejection stages. If the unit is not configured for any heat rejection stages, this object will not be available.

Measurement Units Data Type Valid Range Default ValueStages No Units Real 0-12 N/A

Object Identifier PropertyObject Type Type ID Instance Name IDAnalog Value 2 83 Present_Value 85Full Reference<Device Name>.ActiveHeatRejStage.Present_Value

Application Mode Keypad Menu Path Main Menu\App Mode=

This read/write attribute sets the unit in an application mode (auto, recirc, heat addition only, heat rejection only, or heat addition and rejection). This attribute has no affect unless Control Mode is set to Auto. Control Mode is only set at the keypad/display.

Measurement Units Data Type Valid Range Default ValueMethod N/A Unsigned Enumerated 5=HeatAddRej

Object Identifier PropertyObject Type Type ID Instance Name ID

Multistate Value 19 10 Present_Value 85

Full Reference<Device Name>.AppMode.Present_ValueEnumeration1=Off2=Recirc3=HeatAddOnly4=HeatRejOnly5=HeatAddRej

Application VersionKeypad Menu Path Main Menu\About This LWC\App Version=

This read-only property identifies the version of application software loaded into the unit controller.

Measurement Units Data Type Valid Range Default ValueN/A N/A CharacterString N/A N/A


Device 8 Variable Application_Software_Version 12Full Reference<Device Name>.Application_Software_Version

Boiler DeadbandKeypad Menu Path Main Menu\View/Set Unit\Boiler Setpoints\Boiler DB=

This read/write property indicates the current boiler deadband.

Measurement Units Data Type Valid Range Default ValueDifferential

Temperature d°F / d°C Real 0–10.00008d°F 1.00008d°F

Object Identifier PropertyObject Type Type ID Instance Name IDAnalog Value 2 70 Present_Value 85Full Reference<Device Name>.BoilerDB.Present_Value

Boiler RangeKeypad Menu Path Main Menu\View/Set Unit\Boiler Setpoints\Boiler Ctrl Zn=

This read/write property is used to calculate the gain used in the PI control function that modules that boiler valve. If the boiler valve is hunting, lower this value. If it is sluggish, raise this value. Make small adjustments to avoid overcorrecting.


Temperature d°F /d°C Real 1.00008–30.00006d°F 7.00002d°F

Object Identifier PropertyObject Type Type ID Instance Name IDAnalog Value 2 71 Present_Value 85Full Reference<Device Name>.BoilerRange.Present_Value



Boiler Return TemperatureKeypad Menu Path Main Menu\Quick Menu\Blr Return Tmp=

This read-only property indicates the current reading of the unit Boiler Return temperature sensor.


Temperature °F / °C Real -50.0–249.998°F (-45.56°–121.11°C ) N/A

Object Identifier PropertyObject Type Type ID Instance Name IDAnalog Input 0 4 Present_Value 85

Full Reference<Device Name>.BoilerReturnTemp.Present_Value

Boiler SetpointKeypad Menu Path Main Menu\View/Set Unit\Boiler Setpoints\Boiler Spt=

This read/write property sets the Boiler Setpoint via the network.


Temperature °F / °C Real -0.004–199.994°F (-17.78–93.33°C) N/A

Object Identifier PropertyObject Type Type ID Instance Name IDAnalog Value 2 57 Present_Value 85Full Reference<Device Name>.BoilerSpt.Present_Value

Boiler Supply TemperatureKeypad Menu Path Main Menu\Quick Menu\Blr Supply Tmp=

This read-only property indicates the current reading of the unit Boiler Supply temperature sensor.




Full Reference<Device Name>.BoilerSupplyTemp.Present_Value

Boiler Valve Position Keypad Menu Path No Keypad Equivalent

This read-only property indicates the current percentage of the Boiler Valve capacity.

Measurement Units Data Type Valid Range Default ValuePercent % Real 0-100% N/A

Object Identifier PropertyObject Type Type ID Instance Name IDAnalog Value 2 65 Present_Value 85Full Reference<Device Name>.BoilerValvePos.Present_Value

Clear Alarms Keypad Menu Path No Keypad Equivalent

This read/write property allows alarms to be cleared through the network. After a clear command is sent, the Present Value will be automatically switched back to No (1).

Measurement Units Data Type Valid Range Default ValueMethod N/A Unsigned Enumerated 1=No



Full Reference<Device Name>.ClearAlarms.Present_ValueEnumeration1=No2=ClrFlts3=ClrPrblms4=ClrWrngs5=ClrAllAlms

Control Mode Keypad Menu Path Main Menu\Ctrl Mode=

This read only property indicates the current control mode in the LWC. If the Present Value is equal to Auto/Net (6), then the controller will use the Application Mode. The control mode does not set the unit into a particular state, it just tells the controller which states are possible.

Measurement Units Data Type Valid Range Default ValueMethod N/A Unsigned Enumerated 6=Auto/Net


Multistate Value 19 15 Present_Value 85Full Reference<Device Name>.ControlMode.Present_ValueEnumeration1=Off2=Recirc3=HeatAddOnly4=HeatRejOnly5=HeatAddRej6=Auto/Net (default)



Control TemperatureKeypad Menu Path Main Menu\Quick Menu\Lp Ctrl Temp=

This read-only property indicates the current temperature used for control. It is either the supply or return temp depending on the configuration.


Temperature °F / °C Real -83.2–147.2°F (-64°–64°C) N/A

Object Identifier PropertyObject Type Type ID Instance Name IDAnalog Value 2 78 Present_Value 85Full Reference<Device Name>.ControlTemp.Present_Value

Current State Keypad Menu Path No Keypad Equivalent

This read/write property is used to command occupancy for the MicroTech III LWC when Occupancy Mode is set to Auto from the keypad. If this parameter is set to Occ(1), the LWC will be occupied regardless of the internal schedule. If the Present Value is set to Unocc(2), then the LWC will be unoccupied, regardless of the internal schedule. If the Present Value is set to Auto(3), then the internal schedule only is used to determine occupancy, if Occupancy Mode is set to Auto.

Measurement Units Data Type Valid Range Default ValueMethod N/A Unsigned Enumerated 3=Auto



Full Reference<Device Name>.CurrentState.Present_ValueEnumeration1=Occ2=Unocc3=Auto(Null)

Damper Interlock Keypad Menu Path MainOverview\Unit Configuration\Component Setup\Damper I’lock=

When this read/write BACnet object indicates On, a tower fan discharge damper proving switch is wired to the LWC as heat rejection stage 1 and you want to wait for this input to be closed before progressing to Heat Rejection Stage 2. When Off, the controller will wait the normal stage time between all Heat Rejection Stages.

Measurement Units Data Type Valid Range Default ValueMethod N/A Unsigned Enumerated 1=On

Object Identifier PropertyObject Type Type ID Instance Name IDBinary Input 3 6 Present_Value 85

Full Reference<Device Name>.DamperInterlock.Present_ValueEnumeration0 = Off1 = On

Effective Boiler SetpointKeypad Menu Path Main Menu\View/Set Unit\Boiler Setpoints\Active Setpoint=

This read only property indicates the effective boiler setpoint. If no outside air reset is enabled, this point will equal the Boiler Setpoint (AV57).

Measurement Units Data Type Valid Range Default ValueTemperature °F / °C Real N/A N/A

Object Identifier PropertyObject Type Type ID Instance Name IDAnalog Value 2 96 Present_Value 85Full Reference<Device Name>.EffBoilerSpt.Present_Value



Geothermal TemperatureKeypad Menu Path Main Menu\View/Set Unit\Temperatures\Geothermal Tmp=

This read-only attribute indicates the current value of the geothermal temperature sensor.


Temperature °F / °C Real -50°–150°F (-45.56–65.56°C) N/A


Full Reference<Device Name>.GeothermalTemp.Present_Value

Head Pressure Keypad Menu Path Main Menu\Quick Menu\Head Pressure=

This read-only property displays the unit’s head pressure.

Measurement Units Data Type Valid Range Default ValuePound per

square inch psi Real 0–5000 psi N/A


Full Reference<Device Name>.HeadPressure.Present_Value



Heat Addition Stage DifferentialsKeypad Menu Path

Main Menu\View/Set Unit\Heat Stage Spts\Stage 1 Diff= Main Menu\View/Set Unit\Heat Stage Spts\Stage 2 Diff= Main Menu\View/Set Unit\Heat Stage Spts\Stage 3 Diff= Main Menu\View/Set Unit\Heat Stage Spts\Stage 4 Diff= Main Menu\View/Set Unit\Heat Stage Spts\Stage 5 Diff= Main Menu\View/Set Unit\Heat Stage Spts\Stage 6 Diff= Main Menu\View/Set Unit\Heat Stage Spts\Stage 7 Diff= Main Menu\View/Set Unit\Heat Stage Spts\Stage 8 Diff= Main Menu\View/Set Unit\Heat Stage Spts\Stage 9 Diff= Main Menu\View/Set Unit\Heat Stage Spts\Stage 10 Diff= Main Menu\View/Set Unit\Heat Stage Spts\Stage 11 Diff= Main Menu\View/Set Unit\Heat Stage Spts\Stage 12 Diff=

These read/write properties set the Heat Addition Stage Differentials via the network.

Measurement Units Data Type Valid Range Default ValueDifferential d°F / d°C Real 0–9d°F 3.00006d°F

Stage 1 DifferentialObject Identifier Property

Object Type Type ID Instance Name IDAnalog Value 2 14 Present_Value 85Full Reference<Device Name>.HeatAddStage1Diff.Present_Value

























Heat Addition Stage SetpointsKeypad Menu Path

Main Menu\View/Set Unit\Heat Stage Spts\Stage 1 Spt= Main Menu\View/Set Unit\Heat Stage Spts\Stage 2 Spt= Main Menu\View/Set Unit\Heat Stage Spts\Stage 3 Spt= Main Menu\View/Set Unit\Heat Stage Spts\Stage 4 Spt= Main Menu\View/Set Unit\Heat Stage Spts\Stage 5 Spt= Main Menu\View/Set Unit\Heat Stage Spts\Stage 6 Spt= Main Menu\View/Set Unit\Heat Stage Spts\Stage 7 Spt= Main Menu\View/Set Unit\Heat Stage Spts\Stage 8 Spt= Main Menu\View/Set Unit\Heat Stage Spts\Stage 9 Spt= Main Menu\View/Set Unit\Heat Stage Spts\Stage 10 Spt= Main Menu\View/Set Unit\Heat Stage Spts\Stage 11 Spt= Main Menu\View/Set Unit\Heat Stage Spts\Stage 12 Spt=

These read/write properties set the Heat Addition Stage Setpoints via the network. This set point will adjust upward in response to the Outdoor air temperature if the OAResetType is set to OAT.


Temperature °F / °C Real 63.0–69.0°F (17.2–20.56°C) 64.9°F

Stage 1 SetpointObject Identifier Property

Object Type Type ID Instance Name IDAnalog Value 2 2 Present_Value 85Full Reference<Device Name>.HeatAddStage1Spt.Present_Value






Object Type Type ID Instance Name IDAnalog Value 2 5 Present_Value 85Full Reference

<Device Name>.HeatAddStage4Spt.Present_Value



















Heat Addition Status Keypad Menu Path Main Menu\Quick Menu\HeatAdd Status=

This read only property displays the current heat addition status. If the unit is not configured for any heat stages or a boiler valve, this will show None(1). If the Control Mode is locking out heat addition, the Present Value will read OffLoc(2). If the network is locking out heat addition using the Application Mode, the Present Value will read OffNet(3). If the Secondary Loop Pump Fail Problem is active, the Present value will read Alarm(5). Otherwise heat addition will be enabled(4).

Measurement Units Data Type Valid Range Default ValueMethod N/A Unsigned Enumerated



Full Reference<Device Name>.HeatAddStatus.Present_ValueEnumeration1=None2=OffLoc3=OffNet4=Enabled5=Alarm

Heat Exchanger Return TemperatureKeypad Menu Path Main Menu\View/Set Unit\Temperatures\HeatXchr RetTmp=

This read-only attribute indicates the current value of the heat exchanger return temperature sensor.


Temperature °F / °C Real -50°–150°F (-45.56°-65.56°C) N/A


Full Reference<Device Name>.HeatXchrReturnTemp.Present_Value

Heat Exchanger Supply TemperatureKeypad Menu Path Main Menu\View/Set Unit\Temperatures\HeatXchr SupTmp=

This read-only attribute indicates the current value of the heat exchanger supply temperature sensor.


Temperature °F / °C Real -50–150°F (-45.56–65.56°C) N/A


Full Reference<Device Name>.HeatXchrSupplyTemp.Present_Value



Heat Rejection Stage DifferentialsKeypad Menu Path

Main Menu\View/Set Unit\Cool Stage Spts\Stage 1 Diff= Main Menu\View/Set Unit\Cool Stage Spts\Stage 2 Diff= Main Menu\View/Set Unit\Cool Stage Spts\Stage 3 Diff= Main Menu\View/Set Unit\Cool Stage Spts\Stage 4 Diff= Main Menu\View/Set Unit\Cool Stage Spts\Stage 5 Diff= Main Menu\View/Set Unit\Cool Stage Spts\Stage 6 Diff= Main Menu\View/Set Unit\Cool Stage Spts\Stage 7 Diff= Main Menu\View/Set Unit\Cool Stage Spts\Stage 8 Diff= Main Menu\View/Set Unit\Cool Stage Spts\Stage 9 Diff= Main Menu\View/Set Unit\Cool Stage Spts\Stage 10 Diff= Main Menu\View/Set Unit\Cool Stage Spts\Stage 11 Diff= Main Menu\View/Set Unit\Cool Stage Spts\Stage 12 Diff=

This read/write property sets the Heat Rejection Stage Differentials via the network.

Measurement Units Data Type Valid Range Default ValueDifferential d°F / d°C Real 0–9d°F 3.00006d°F


Object Type Type ID Instance Name IDAnalog Value 2 38 Present_Value 85Full Reference<Device Name>.HeatRejStage1Diff.Present_Value

























Heat Rejection Stage Setpoints Keypad Menu Path

Main Menu\View/Set Unit\Cool Stage Spts\Stage 1 Spt= Main Menu\View/Set Unit\Cool Stage Spts\Stage 2 Spt= Main Menu\View/Set Unit\Cool Stage Spts\Stage 3 Spt= Main Menu\View/Set Unit\Cool Stage Spts\Stage 4 Spt= Main Menu\View/Set Unit\Cool Stage Spts\Stage 5 Spt= Main Menu\View/Set Unit\Cool Stage Spts\Stage 6 Spt= Main Menu\View/Set Unit\Cool Stage Spts\Stage 7 Spt= Main Menu\View/Set Unit\Cool Stage Spts\Stage 8 Spt= Main Menu\View/Set Unit\Cool Stage Spts\Stage 9 Spt= Main Menu\View/Set Unit\Cool Stage Spts\Stage 10 Spt= Main Menu\View/Set Unit\Cool Stage Spts\Stage 11 Spt= Main Menu\View/Set Unit\Cool Stage Spts\Stage 12 Spt=

These read/write properties set the Heat Rejection Stage Setpoints via the network. This set point will adjust upward in response to the Outdoor air temperature.


Temperature °F / °C Real 70.0–82.9°F (21.11–28.3°C) 81.0°F


Object Type Type ID Instance Name IDAnalog Value 2 26 Present_Value 85Full Reference<Device Name>.HeatRejStage1Spt.Present_Value






















Object Type Type ID Instance Name IDAnalog Value 2 37 Present_Value 85Full Reference

<Device Name>.HeatRejStage12Spt.Present_Value



Heat Rejection Status Keypad Menu Path Main Menu\Quick Menu\HeatAdd Status=

This read only property displays the current heat rejection status. If the unit is not configured for any cool stages or a tower valve, this will show None(1). If the Control Mode is locking out heat rejection, the Present Value will read OffLoc(2). If the network is locking out heat rejection using the Application Mode, the Present Value will read OffNet(3). If the Secondary Loop Pump Fail Problem is active, the Present value will read Alarm(5). Otherwise heat rejection will be enabled(4).

Measurement Units Data Type Valid Range Default ValueMethod N/A Unsigned Enumerated


Multistate Value 19 17 Present_Value 85Full Reference<Device Name>.HeatRejStatus.Present_ValueEnumeration1=None2=OffLoc3=OffNet4=Enabled5=Alarm

Lead Pump Select Keypad Menu Path Main Menu\View/Set Unit\Pump Control\Ld Pmp Select=

This read/write property selects the pump control. If this parameter is set to None, then no pumps are selected. If this parameter is set to Pump1, Pump 1 shall be the lead pump. If Pump2 selected, then pump 2 shall be the lead pump. With an “auto” option that allows the controller to select which pump shall lead based upon a comparison of the two pumps’ hours of operation.



Multistate Value 19 3 Present_Value 85Full Reference<Device Name>.LeadPumpSelect.Present_ValueEnumeration1=None2=Pump13=Pump24=Auto

Lead Secondary Pump Select Keypad Menu Path Main Menu\View/Set Unit\Pump Control\Ld Sec Pmp Select=

This read/write property selects the pump control. If this parameter is set to None, then none of the pump will selected. If this parameter is set to Pump1, Pump 1 shall be the lead pump. If Pump2 selected, then pump 2 shall be the lead pump. With an “auto” option that allows the controller to select which pump shall lead based upon a comparison of the two pumps’ hours of operation.



Multistate Value 19 4 Present_Value 85Full Reference<Device Name>.LeadSecPumpSel.Present_ValueEnumeration1=None2=Pump13=Pump24=Auto

Local Outdoor Air TemperatureKeypad Menu Path Main Menu\Service Menus\I/O Status\Local OAT=

This read-only attribute indicates the current value of a unit-mounted outdoor air temperature sensor. This variable only applies if the unit is configured for an outdoor air temperature sensor.


Temperature °F / °C Real -50°–150°F (-45.56–65.56°C) N/A


Full Reference<Device Name>.LocalOAT.Present_Value

Loop Return TemperatureKeypad Menu Path Main Menu\Quick Menu\Lp Return Temp=

This read-only property indicates the current reading of the unit Loop Return temperature sensor.




Full Reference<Device Name>.LoopReturnTemp.Present_Value



Loop Return Temperature (Problem)Keypad Menu Path Main Menu\Quick Menu\Lp Return Temp=

The Present Value of this object is the same as Loop Return Temperature (AI2). The only difference is that this object is used for intrinsic reporting of the return air temperature sensor, high and low problems when the control temperature is not set to return.




Full Reference<Device Name>.LoopReturnTempProb.Present_Value

Loop Supply TemperatureKeypad Menu Path Main Menu\Quick Menu \Lp Supply Temp=

This read-only property indicates the current reading of the unit Loop Supply temperature sensor.




Full Reference<Device Name>.LoopSupplyTemp.Present_Value

Main Loop Capacity - NetworkKeypad Menu Path No Keypad Equivalient

This writable property indicates the speed at which the main pump VFD’s should run. If the Present Value is greater than 160%, then the network is not controlling the speed and the speed will be based on head pressure control. This point only applies if the main pump(s) are configured for VFDs.

Measurement Units Data Type Valid Range Default ValueTemperature °F / °C Real 0-164% 163.835

Object Identifier PropertyObject Type Type ID Instance Name IDAnalog Value 2 78 Present_Value 85Full Reference<Device Name>.ControlTemp.Present_Value

Main Loop Control Select Keypad Menu Path No Keypad Equivalent

This read/write property allows the network to select the supply or return temperature sensors as the control temperature.

Measurement Units Data Type Valid Range Default ValueMethod N/A Unsigned Enumerated 1=Supply


Multistate Value 19 14 Present_Value 85Full Reference<Device Name>.MainLoopCtrlSelect.Present_ValueEnumeration1=Supply2=Return

Max OA Reset @ Keypad Menu Path Main Menu\View/Set Unit\Outside Air Reset\Max Reset Spt=

This read/write property sets the maximum outside air temperature reset setpoint when Boiler Valve OA Reset Method is set to Other.

Measurement Units Data Type Valid Range Default ValueTemperature °F / °C Real -20.00002–10.0004°F -4.05432e–04°F

Object Identifier PropertyObject Type Type ID Instance Name IDAnalog Value 2 76 Present_Value 85Full Reference<Device Name>.MaxOAResetAt.Present_Value



Maximum Control Temp RangeKeypad Menu Path No keypad equivalent

This read-only property indicates the current maximum temperature used for control.

• If the LWC is actively heating and is configured for staged heating, this will be the adjusted heat addition stage 1 setpoint.

• If the LWC is actively heating, has no staged heating, but is configured for a boiler valve, this value will be N/A (30.2°F/-1°C).

• If the LWC is actively cooling, and is configured for staged cooling, this will be the stage X cooling setpoint, where X is the number of heat rejection stages.

• If the LWC is actively cooling, and is not configure for staged cooling, but is configured for a tower fan actuator, this will be the tower fan setpoint

• If the LWC is not actively heating or cooling, and has staged cooling, this will be the heat rejection stage 1 setpoint.

• If the LWC is not actively heating or cooling, and has no staged cooling, but is configured for a tower fan actuator, this value will be the tower fan setpoint.


Temperature °F / °C Real 30.2°F(N/A)–212°F (-1°C–100°C) N/A

Object Identifier PropertyObject Type Type ID Instance Name IDAnalog Value 2 95 Present_Value 85Full Reference<Device Name>.TMax.Present_Value

Minimum Control Temp RangeKeypad Menu Path No keypad equivalent

This read-only property indicates the current minimum temperature used for control.

• If the LWC is actively heating and is configured for staged heating, this will be the adjusted heat addition stage X setpoint, where X is number of heat addition stages.

• If the LWC is actively heating, has no staged heating, but is configured for a boiler valve, this value will be the adjusted boiler valve setpoint.

• If the LWC is actively cooling, and is configured for staged cooling, this will be the stage 1 cooling setpoint.

• If the LWC is actively cooling, and is not configured for staged cooling, but is configured for a tower fan actuator, this will be N/A (30.2°F/-1°C).

• If the LWC is not actively heating or cooling, and has staged heating, this will be the adjusted heat addition stage 1 setpoint.

• If the LWC is not actively heating or cooling, and has no staged heating, but is configured for a boiler valve, this value will be the adjusted boiler valve setpoint.


Temperature °F / °C Real 30.2°F(N/A)–212°F (-1°C–100°C) N/A

Object Identifier PropertyObject Type Type ID Instance Name IDAnalog Value 2 94 Present_Value 85Full Reference<Device Name>.TMin.Present_Value

Network Outdoor Air TemperatureKeypad Menu Path No Keypad Equivalent

This writable attribute indicates the network outdoor air temperature. If a valid value is written to this, the controller will use this network temperature instead of the local outdoor air temperature sensor for control. A value greater than 100°C/212°F is considered invalid. The network value is ignored if the unit is in manual control.


Temperature °F / °C Real -83.2°F– 300.806°F 327.67°C/621.806°F

Object Identifier PropertyObject Type Type ID Instance Name IDAnalog Value 2 84 Present_Value 85Full Reference<Device Name>.NetOAT.Present_Value



Occupancy ModeKeypad Menu Path Main Menu\Occ Mode=

This read/write property sets the unit into a different occupancy mode. The request is typically sent by a wall-mounted occupant-interface module or a supervisory node, typically used to manually control occupancy modes or to override the scheduled occupancy. This input is used with Current State to determine the effective occupancy mode.

If the Occupancy Mode is Unoccupied, the unit may still startup and run as needed for unoccupied limit control.

Measurement Units Data Type

Valid Range

Uses Heartbeat

Default Value

Mode N/A Unsigned Enumerated No Auto or NUL (3)


Multistate Value 19 21 Present_Value 85Full Reference<Device Name>.OccMode.Present_ValueEnumeration1 = Occ2 = Unocc3 = Auto

Outdoor Air Humidity Keypad Menu Path Main Menu\Quick Menu\Head Pressure=

This read-only property displays the unit’s outdoor air humidity sensor.

Measurement Units Data Type Valid Range Default Value%rh psi Real 0-100% N/A


Full Reference<Device Name>.OAHumidity.Present_Value

Outdoor Air Reset Max Reset Amount Keypad Menu Path Main Menu\View/Set Unit\Stg OA Reset\Max Reset Amt=

This read/write property sets the Outdoor Air Reset Max Reset Amount Setpoint via the network. This is used to reset the staged heat addition setpoints.

Measurement Units Data Type Valid Range Default ValueTemperature °F / °C Real 0.0 -9.0°F 8.0°F

Object Identifier PropertyObject Type Type ID Instance Name IDAnalog Value 2 90 Present_Value 85Full Reference<Device Name>.StgHtgMaxResetAmount.Present_Value

Outdoor Air Reset Max Setpoint Keypad Menu Path Main Menu\View/Set Unit\BVlv OA Reset\Bvlv OAR Max=

This read/write property sets the Outdoor Air Max Reset Setpoint via the network. This is used to reset the boiler valve setpoint.

Measurement Units Data Type Valid Range Default ValueTemperature °F / °C Real 32.0 -194.0°F 90.0°F

Object Identifier PropertyObject Type Type ID Instance Name IDAnalog Value 2 1 Present_Value 85Full Reference<Device Name>.BvlvOARMaxSpt.Present_Value

Outdoor Air Reset Max Setpoint @Keypad Menu Path Main Menu\View/Set Unit\BVlv OA Reset\Bvlv OAR Max@=

This read/write property sets the Outdoor Air Max Reset Setpoint @ via the network. This is used to reset the boiler valve setpoint.

Measurement Units Data Type Valid Range Default ValueTemperature °F / °C Real -40.0–90.0°F 50°F

Object Identifier PropertyObject Type Type ID Instance Name IDAnalog Value 2 93 Present_Value 85Full Reference<Device Name>.BvlvOARMaxSptAt.Present_Value

Outdoor Air Reset Min Setpoint Keypad Menu Path Main Menu\View/Set Unit\BVlv OA Reset\Bvlv OAR Min=

This read/write property sets the Outdoor Air Min Reset Setpoint via the network. This is used to reset the boiler valve setpoint.

Measurement Units Data Type Valid Range Default ValueTemperature °F / °C Real 32.0–194.0°F 180°F

Object Identifier PropertyObject Type Type ID Instance Name IDAnalog Value 2 91 Present_Value 85Full Reference<Device Name>.BvlvOARMinSpt.Present_Value



Outdoor Air Reset Min Setpoint @Keypad Menu Path Main Menu\View/Set Unit\BVlv OA Reset\Bvlv OAR Min@=

This read/write property sets the Outdoor Air Min Reset Setpoint @ via the network. This is used to reset the boiler valve setpoint.

Measurement Units Data Type Valid Range Default ValueTemperature °F / °C Real -40.0–90.0°F -10°F

Object Identifier PropertyObject Type Type ID Instance Name IDAnalog Value 2 92 Present_Value 85Full Reference<Device Name>.BvlvOARMinSptAt.Present_Value

Outdoor Air TemperatureKeypad Menu Path Main Menu\Quick Menu\Lp Ctrl Temp=

This read-only property indicates the current outdoor air temperature for control. If manual control is active, this will be the manual temperature. If a valid value is in Network Outdoor Air Temperature, this will be set to that value. Otherwise, this is set equal to the local Outdoor air temperature sensor.


Temperature °F / °C Real-83.2°F to 147.2°F

(-64°–64°C )N/A

Object Identifier PropertyObject Type Type ID Instance Name IDAnalog Value 2 85 Present_Value 85Full Reference<Device Name>.OutdoorAirTemp.Present_Value

PreCool DifferentialKeypad Menu Path Main Menu\View/Set Unit\Pre Heat & Cool\Pre Cool Diff=

This read/write property sets the PreCool Differential via the network.

Measurement Units Data Type Valid Range Default ValueDifferential d°F/d°C Real 0-10.008d°F 3.006d°F

Object Identifier PropertyObject Type Type ID Instance Name IDAnalog Value 2 62 Present_Value 85Full Reference<Device Name>.PreCoolDiff.Present_Value

PreCool EnableKeypad Menu Path Main Menu\Unit Configuration\Pre Cool Ena=

This read/write property enables or disabled PreCool via the network. Power must by cycled to the LWC after changing this parameter.

Measurement Units Data Type Valid Range Default ValueN/A N/A Unsigned 1-2 1=Disabled


Multistate Value 19 7 Present_Value 85Full Reference<Device Name>.PreClEnable.Present_ValueEnumeration1 - Disabled2 - Enabled

PreCool Outdoor Air SetpointKeypad Menu Path Main Menu\View/Set Unit\Pre Heat & Cool \Pre Cool OA Spt=

This read/write property sets the PreCool Outdoor Air Setpoint via the network.


Temperature °F / °C Real55.0 – 85.0°F

(18.33 – 29.44°C)

N/A

Object Identifier PropertyObject Type Type ID Instance Name IDAnalog Value 2 63 Present_Value 85Full Reference<Device Name>.PreCoolOASpt.Present_Value

PreCool SetpointKeypad Menu Path Main Menu\View/Set Unit\Pre Heat & Cool \Pre Cool Spt=




(18.33 – 29.44°C)

N/A

Object Identifier PropertyObject Type Type ID Instance Name IDAnalog Value 2 61 Present_Value 85Full Reference<Device Name>.PreCoolSpt.Present_Value



PreCool StagesKeypad Menu Path Main Menu\View/Set Unit\Pre Heat & Cool \Pre Cool Stages=

This read/write property configures the number of PreCool stages via the network.

Measurement Units Data Type Valid Range Default ValueN/A N/A Unsigned 1-13 1=None


Multistate Value 19 6 Present_Value 85Full Reference<Device Name>.PreCoolStages.Present_ValueEnumeration1 = None2 = 13 = 24 = 35 = 46 = 57 = 68 = 79 = 810 = 911 = 1012 = 1113 = 12

PreHeat DifferentialKeypad Menu Path Main Menu\View/Set Unit\Pre Heat & Cool \Pre Heat Diff=

This read/write property sets the PreHeat Differential via the network.

Measurement Units Data Type Valid Range Default ValueDifferential d°F/d°C Real 0–10.008d°F 3.006d°F

Object Identifier PropertyObject Type Type ID Instance Name IDAnalog Value 2 59 Present_Value 85Full Reference<Device Name>.PreHeatDiff.Present_Value

PreHeat EnableKeypad Menu Path Main Menu\Unit Configuration\Pre Heat Ena=

This read/write property enables or disables PreHeat. Power must be cycled to the LWC after changing this parameter.

Measurement Units Data Type Valid Range Default ValueN/A N/A Unsigned 1-2 1=Disabled


Multistate Value 19 8 Present_Value 85Full Reference<Device Name>.PreHtEnable.Present_ValueEnumeration1 - Disabled2 - Enabled

PreHeat Outdoor Air SetpointKeypad Menu Path Main Menu\View/Set Unit\Pre Heat & Cool\Pre Heat OA Spt=

This read/write property sets the PreHeat Outdoor Air Setpoint via the network.



(4.44 – 10.0°C )

N/A

Object Identifier PropertyObject Type Type ID Instance Name IDAnalog Value 2 60 Present_Value 85Full Reference<Device Name>.PreHeatOASpt.Present_Value

PreHeat SetpointKeypad Menu Path Main Menu\View/Set Unit\Pre Heat & Cool \Pre Heat Spt=

This read/write property sets the temperature at which preheat will turn off. Also used to determine one of the conditions that will allow the prehead addition stages to turn on



(15.56– 26.66°C )

N/A

Object Identifier PropertyObject Type Type ID Instance Name IDAnalog Value 2 58 Present_Value 85Full Reference<Device Name>.PreHeatSpt.Present_Value



PreHeat StagesKeypad Menu Path Main Menu\View/Set Unit\Pre Heat & Cool \Pre Heat Stages=

This read/write property sets the number of PreHeat Stages.

Measurement Units Data Type Valid Range Default ValueN/A N/A Unsigned 1-5 1=None


Multistate Value 19 5 Present_Value 85Full Reference<Device Name>.PreHeatStages.Present_ValueEnumeration1 = None2 = 13 = 24 = 55 = 4

Pump 1 FlowKeypad Menu Path Main Menu\QuickMenu\Pump1 Flow=

This read-only BACnet object indicates the condition of the Main Pump 1 Switch. This point is only present if the LWC is configured for at least one main pump switch.

Measurement Units Data Type Valid Range Default ValueAlarm N/A Enumerated 0-1 N/A


Full Reference<Device Name>.Pump1Flow.Present_ValueEnumeration0 – Off1 – On

Pump 1 Hours Keypad Menu Path Main Menu\View/Set Unit\Pump Contol\Pump1 Hours=

This read-only property indicates the number of hours that Pump 1 has been operated.

Measurement Units Data Type Valid Range Default ValueEvent Count Hours Real 0 – 999,999 N/A

Object Identifier PropertyObject Type Type ID Instance Name IDAnalog Value 2 52 Present_Value 85Full Reference<Device Name>.Pump1Hrs.Present_Value

Pump 2 FlowKeypad Menu Path Main Menu\Quick Menu\Pump2 Flow=

This read-only BACnet object indicates the condition of the Main Pump 2 Switch. This point is only present if the LWC is configured for two main pump switchs.



Full Reference<Device Name>.Pump2Flow.Present_ValueEnumeration0 – Off1 – On

Pump 2 Hours Keypad Menu Path MaimOverview\Unit Control\Pump Contol\Pump2 Hours=

This read-only property indicates the number of hours that Pump 2 has been operated.

Measurement Units Data Type Valid Range Default ValueEvent Count Hours Real 0 – 999,999 N/A

Object Identifier PropertyObject Type Type ID Instance Name IDAnalog Value 2 53 Present_Value 85Full Reference<Device Name>.Pump2Hrs.Present_Value

Pump Fail Delay Keypad Menu Path Main Menu/Commission Unit/Safety Setpoints/Pump Fail Delay=

This read/write property sets the pump fan delay via the network.

Measurement Units Data Type Valid Range Default ValueTime Seconds Real 0-600sec 10s

Object Identifier PropertyObject Type Type ID Instance Name IDAnalog Value 2 77 Present_Value 85Full Reference<Device Name>.PumpFailDelay.Present_Value



Recirc TimerKeypad Menu Path Main Menu\Commission Unit\Timer Settings\Recirc Time=

This read/write property sets the number of seconds the LWC will remain in the Recirculate state when starting.

Measurement Units Data Type Valid Range Default ValueSeconds Sec Real 0–1800 seconds 180s

Object Identifier PropertyObject Type Type ID Instance Name IDAnalog Value 2 74 Present_Value 85Full Reference<Device Name>.RecircTimer.Present_Value

Secondary Pump 1 FlowKeypad Menu Path Main Menu\Quick Menu\Sec Pump1 Flow=

This read-only BACnet object indicates the condition of the Secondary Pump 1 Flow Switch. This point is only present if the LWC is configured for at one secondary pump flow switch.



Full Reference<Device Name>.SecPump1Flow.Present_ValueEnumeration0 – Off1 – On

Secondary Pump 1 Hours Keypad Menu Path Main Menu\View/Set Unit\Pump Contol\Sec Pump1 Hrs=

This read-only property indicates the number of hours that Secondary Pump 1 has been operated.

Measurement Units Data Type Valid Range Default ValueEvent Count Hours Real 0–999,999 N/A

Object Identifier PropertyObject Type Type ID Instance Name IDAnalog Value 2 54 Present_Value 85Full Reference<Device Name>.SecPump1Hrs.Present_Value

Secondary Pump 2 FlowKeypad Menu Path Main Menu\Quick Menu\Sec Pump2 Flow=

This read-only BACnet object indicates the condition of the Secondary Pump 2 Flow Switch. This point is only present if the LWC is configured for two secondary pump flow switches.



Full Reference<Device Name>.SecPump2Flow.Present_ValueEnumeration0 – Off1 – On

Secondary Pump 2 Hours Keypad Menu Path Main Menu\View/Set Unit\Pump Contol\Sec Pump2 Hrs=

This read-only property indicates the number of hours that Secondary Pump 2 has been operated.

Measurement Units Data Type Valid Range Default ValueEvent Count Hours Real 0–999,999 N/A

Object Identifier PropertyObject Type Type ID Instance Name IDAnalog Value 2 55 Present_Value 85Full Reference<Device Name>.SecPump2Hrs.Present_Value

Stage TimeKeypad Menu Path Main Menu\Commission Unit\Timer Settings\Stage Time=

This read/write property indicates defines the time between heat addition and heat rejection stages. In addition the Stage Time is used to determine how long to open or close the boiler and/or tower valves. The appropriate output will energize for 70% of the Stage Time.

Measurement Units Data Type Valid Range Default ValueSeconds Seconds Real 0–600 seconds 20s

Object Identifier PropertyObject Type Type ID Instance Name IDAnalog Value 2 69 Present_Value 85Full Reference<Device Name>.StageTime.Present_Value



Storage Tank TemperatureKeypad Menu Path Main Menu\Quick Menu\Storage Tnk Tmp=

This sensor is normally used when there is a thermal storage tank in the hydronic loop. This is a monitoring only temperature sensor and is used simply for display of the storage tank water temperature to the building operator.


Temperature °F / °C Real -50.0–249.998°F (-45.56°–121.11°C) N/A


Full Reference<Device Name>.StorageTankTemp.Present_Value

Sump Dump DayKeypad Menu Path Main Menu\Set/View Unit\Tower Setpoints\SumpDmp Day=

This writable attribute indicates the day of the month in which the sump will dump. It only applies if Sump Dump Month is not set to Disable.

Measurement Units Data Type Valid Range Default ValueDay of Month N/A Real 1-31 1

Object Identifier PropertyObject Type Type ID Instance Name IDAnalog Value 2 88 Present_Value 85Full Reference<Device Name>.SumpDumpDay.Present_Value

Sump Dump Month Keypad Menu Path Main Menu\Set/View Unit\Tower Setpoints\SumpDmp Month=

This read/write property sets the month in which the sump should be dumped. If set to Disable, this feature is disabled

Measurement Units Data Type Valid Range Default ValueMethod N/A Unsigned Enumerated 1=Disabled


Multistate Value 19 19 Present_Value 85Full Reference<Device Name>.SumpDumpMonth.Present_ValueEnumeration1 - Disable 2 - Jan 3 - Feb 4 - March 5 - April 6 - May 7 - June 8 - July 9 - Aug 10 - Sept 11 - Oct 12 - Nov 13 - Dec

Sump Dump DeadbandKeypad Menu Path Main Menu\Set/View Unit\Tower Setpoints\SumpDmp DB=

This writable attribute indicates the sump dump deadband. If sump dump select is set to OAT, the sump will dump when the outside air temperature drops below the sump dump setpoint minus this deadband. It will re-fill when the outside air temperature rises above the sump dump setpoint plus this deadband.

Measurement Units Data Type Valid Range Default ValueTemperature °F / °C Real 327.67°C/601.806°F

Object Identifier PropertyObject Type Type ID Instance Name IDAnalog Value 2 87 Present_Value 85Full Reference<Device Name>.SumpDumpDB.Present_Value



Sump Dump Select Keypad Menu Path Main Menu\Set/View Unit\Tower Setpoints\SumpDmp Ena=

This read/write property selects the method used to dump the sump. If Disabled(1) is selected, the sump will not be dumped. If Enabled (2) is selected, the sump will be dumped based on either a digital input or the OAT. If either is indicating that the sump should be dumped, the sump will dump.

The digital input can be configured on the keypad to be normally open (default) or normally closed. If the switch is defined as normally open, the sump will dump when the switch closes. In addition, the sump is dumped when the OAT drops below the sump dump setpoint by more than the deadband. The OAT must rise above the setpoint plus deadband to stop the dump.

In addition, the output used to dump the sump can be configured on the keypad to be normally on or normally off (default). If the sump dump output is normally off, then the sump will dump when the output is on.

Measurement Units Data Type Valid Range Default ValueMethod N/A Unsigned Enumerated 2=Enable



Full Reference<Device Name>.SumpDumpSelect.Present_ValueEnumeration1=Disable2=Enable

Sump Dump SetpointKeypad Menu Path Main Menu\Set/View Unit\Tower Setpoints\SumpDmp Spt=

This writable attribute indicates the sump dump setpoint. If sump dump select is set to OAT, the sump will dump when the outside air temperature drops below this setpoint minus the dump dump setpoint. It will re-fill when the outside air temperature rises above this setpoint plus the sump dump deadband.

Measurement Units Data Type Valid Range Default ValueTemperature °F / °C Real 327.67°C/601.806°F

Object Identifier PropertyObject Type Type ID Instance Name IDAnalog Value 2 86 Present_Value 85Full Reference<Device Name>.SumpDumpSpt.Present_Value

Sump Fill DayKeypad Menu Path Main Menu\Set/View Unit\Tower Setpoints\SumpFill Day=

This writable attribute indicates the day of the month in which the sump will fill.

Measurement Units Data Type Valid Range Default ValueDay of Month N/A Real 1-31 1

Object Identifier PropertyObject Type Type ID Instance Name IDAnalog Value 2 89 Present_Value 85Full Reference<Device Name>.SumpFillDay.Present_Value

Sump Fill Month Keypad Menu Path Main Menu\Set/View Unit\Tower Setpoints\SumpFill Month=

This read/write property sets the month in which the sump should be filled. If set to Disable, this feature is disabled

Measurement Units Data Type Valid Range Default ValueMethod N/A Unsigned Enumerated 1=Disabled


Multistate Value 19 20 Present_Value 85Full Reference<Device Name>.SumpFillMonth.Present_ValueEnumeration1 - Disable 2 - Jan 3 - Feb 4 - March 5 - April 6 - May 7 - June 8 - July 9 - Aug 10 - Sept 11 - Oct 12 - Nov 13 - Dec



Tower DeadbandKeypad Menu Path Main Menu\View/Set Unit\Tower Setpoints\Tower DB=

This read/write property sets the deaband used when controlling the tower valve.


Temperature d°F / d°C Real 0–10.00008d°F 1.00008d°F

Object Identifier PropertyObject Type Type ID Instance Name IDAnalog Value 2 72 Present_Value 85Full Reference<Device Name>.TowerDB.Present_Value

Tower RangeKeypad Menu Path Main Menu\View/Set Unit\Tower Setpoints\Tower Ctrl Zn=

This read/write property is used to calculate the gain used in the PI control function that modules that tower valve. If the boiler valve is hunting, lower this value. If it is sluggish, raise this value. Make small adjustments to avoid overcorrecting.


Temperature d°F /d °C Real 1.00008–19.99998°F 7.00002d°F

Object Identifier PropertyObject Type Type ID Instance Name IDAnalog Value 2 73 Present_Value 85Full Reference<Device Name>.TowerRange.Present_Value

Tower Fan EnableKeypad Menu Path Main Menu\Service Menus\I/O Status\Twr Fan Ena Out=

This object indicates the status of the Tower Fan Output. The application commands this point at priority 15. Commanding at a higher priority will override the control from the application. This is not recommended.

Measurement Units Data Type Valid Range Default ValueEnable N/A Enumerated 0-1 0=Off

Object Identifier PropertyObject Type Type ID Instance Name IDBinary Output 4 2 Present_Value 85Full Reference<Device Name>.TowerFanEnable.Present_ValueEnumeration0 – Off1 – On

Tower Fan SpeedKeypad Menu Path Main Menu\Service Menus\I/O Status\Tower Fan=

This read-only property indicates the current percentage of the Tower Fan speed.

Measurement Units Data Type Valid Range Default ValuePercent % Real 0-100% N/A

Object Identifier PropertyObject Type Type ID Instance Name IDAnalog Value 2 64 Present_Value 85Full Reference<Device Name>.TowerFanSpeed.Present_Value

Tower Return TemperatureKeypad Menu Path Main Menu\Quick Menu\Twr Return Tmp=

This read-only property indicates the current reading of the unit Tower Return temperature sensor.




Full Reference<Device Name>.TowerReturnTemp.Present_Value

Tower SetpointKeypad Menu Path Main Menu\View/Set Unit\Tower Setpoints\Tower Spt=

This read/write property sets the Tower Setpoint via the network.


Temperature °F / °C Real 70.0 - 90.0°F (21.111 – 32.222°C) 80°F

Object Identifier PropertyObject Type Type ID Instance Name IDAnalog Value 2 56 Present_Value 85Full Reference<Device Name>.TowerSpt.Present_Value



Tower Supply TemperatureKeypad Menu Path Main Menu\Quick Menu\Twr Supply Tmp=

This read-only property indicates the current reading of the unit Tower Supply temperature sensor.




Full Reference

<Device Name>.TowerSupplyTemp.Present_Value

Unit StateKeypad Menu Path Main Menu\Unit State=

This read-only property indicates the current unit operating state.

Measurement Units Data Type Valid Range Default ValueUnit State N/A Unsigned Enumerated N/A


Multistate Value 19 1 Present_Value 85Full Reference<Device Name>.UnitState.Present_ValueEnumeration1=Unocc 2=UnoccLim 3=Recirc 4=Preheat 5=PreCoo1, 6=ExtFlowReq 7=Occ 8=Alarm 9=Manual10=Off

Unit SupportKeypad Menu Path Main Menu\BMS Communications\BACnet MSTP Set-Up\Unit Support=

This variable sets the units that are sent through the BACnet network. If the value is SI, the Present Value and Units will be in Metric. If the value is US, BACnet will display the Present Value and Units in English units. The power must be cycled on the unit controller for this change to take effect.

Measurement Units Data Type Valid Range Default ValueUnit Support N/A Unsigned 1-2 2=US


Multistate Value 19 9 Present_Value 85Full Reference<Device Name>.UnitSupport.Present_ValueEnumeration1 = SI2 = US

Zero OA Reset @ Keypad Menu Path Main Menu\View/Set Unit\Outside Air Reset\Zero Reset Spt=


Measurement Units Data Type Valid Range Default ValueTemperature °F / °C Real 55.0004–64.9994°F 60.0008°F

Object Identifier PropertyObject Type Type ID Instance Name IDAnalog Value 2 75 Present_Value 85Full Reference<Device Name>.ZeroOAResetAt.Present_Value


alarms

alarms

Three methods of obtaining alarm information are available in the MicroTech III Unit Controller: 1) Alarm value using one BACnet Analog Value, 2) Alarm class, or 3) Notification Classes.

Alarms are divided into three classes: Faults, Problems, and Warnings. Fault alarms have the highest priority. Problem alarms have the next priority. Warning alarms have the lowest priority. The alarms within each class are also prioritized. Refer to the MicroTech III Unit Controller Installation & Operation Manual (OM 1150) for a description of each alarm.

The MicroTech III Unit Controller has various ways of managing alarms, depending on the protocol. Using one of these mechanisms, alarms can be recognized and acknowledged by alarm class or individually, and cleared from the network by alarm class.

The following tables describe the alarm messages, indication, and method of clearing Fault, Problem, and Warning alarms. Alarms are listed in order of priority.

Alarm LEDKeypad Menu Path Main Menu\Service Menus\I/O Status\Alarm LED=

This object indicates the condition of the Alarm LED.

Measurement Units Data Type Valid Range Default ValueLED N/A Enumerated 0-1 N/A


Binary Output 4 1 Present_Value 85

Full Reference<Device Name>.AlarmDigitalOutput.Present_ValueEnumeration0 – Off1 – On

Fault Alarms (Highest Priority)Table 2: Fault Alarms in Order of Priority

Alarm Message Indication ClearHigh Supply Temperature Fault The loop supply temperature is high. ManualLow Supply Temperature Fault The loop supply temperature is low. ManualHigh Return Temperature Fault The loop return temperature is the control temperature and is high. ManualLow Return Temperature Fault The loop return temperature is the control temperature and is low. ManualHigh Head Pressure The head pressure sensor has detected a dangerous high pressure condition. ManualLow Head Pressure The head pressure sensor has detected a dangerous low pressure condition. ManualHead Pressure Sensor Fault Head Pressure sensor is in error. Type of error – disconnect, short, etc – is not specified. ManualOutside Air Sensor Fault Outside Air Temp sensor is in error. Type of error – disconnect, short, etc – is not specified. ManualLoop Return Sensor Fault Loop Return Temp sensor is in error. Type of error – disconnect, short, etc – is not specified. ManualLoop Supply Sensor Fault Loop Supply Temp sensor is in error. Type of error – disconnect, short, etc – is not specified. ManualMain Loop Pump Fail SD All available main loop pumps were activated and failed to establish flow. ManualEmergency Stop Emergency Stop Input in the Alarm (Open) condition. Automatic

Problem Alarms (Medium Priority)Table 3: Problem Alarms in Order of Priority

Alarm Message Indication ClearSecondary Loop Pump 2 Fail Secondary Loop Pump 2 was activated, but no flow was detected before FlowEstDelay timer expired. ManualSecondary Loop Pump1 Fail Secondary Loop Pump 1 was activated, but no flow was detected before FlowEstDelay timer expired. ManualMain Loop Pump 2 Fail Main Loop Pump 2 was activated, but no flow was detected before FlowEstDelay timer expired. ManualMain Loop Pump 1 Fail Main Loop Pump 1 was activated, but no flow was detected before FlowEstDelay timer expired. ManualBoiler Pumps Fail All available secondary loop pumps, that are configured as boiler pumps, were activated and failed to establish flow. ManualTower Pumps Fail All available secondary loop pumps, that are configured as tower pumps, were activated and failed to establish flow. ManualHigh Return Temperature Prob The loop return temperature is not the control temperature and is high. ManualLow Return Temperature Prob The loop return temperature is not the control temperature and is low. ManualReturn Temp Sensor Problem The loop return temperature is not the control temperature and there is a problem with the sensor. Manual

alarms


Warning Alarms (Lowest Priority)Table 4: Warning Alarms in Order of Priority

Alarm Message Indication Clear

UnoccLimProtect Loop Supply Temp exceeds bounds set by Water High Lim and Water Low Lim setpoints. Also triggered if Outdoor Air Temp has fallen below Anti-Freeze setpoint. Unit has entered UnoccLim state. Automatic

SecPump2Manual Secondary Loop Pump 2 has been manually activated or deactivated, overriding any controller directives, and disregarding all alarms. Automatic

SecPump1Manual Secondary Loop Pump 1 has been manually activated or deactivated, overriding any controller directives, and disregarding all alarms. Automatic

Pump2Manual Main Loop Pump 2 has been manually activated or deactivated, overriding any controller directives, and disregarding all alarms. Automatic

Pump1Manual Main Loop Pump 1 has been manually activated or deactivated, overriding any controller directives, and disregarding all alarms. Automatic

Secondary Loop Switch 2 Stuck Fail Secondary Loop Flow Switch 2 is indicating flow, but Sec Pump 2 is not active. AutomaticSecondary Loop Switch 1 Stuck Fail Secondary Loop Flow Switch 1 is indicating flow, but no appropriate pump is active. AutomaticMain Loop Switch 2 Stuck Fail Main Loop Flow Switch 2 is indicating flow, but Main Pump 2 is not active. AutomaticMain Loop Switch 1 Stuck Fail Main Loop Flow Switch 1 is indicating flow, but no appropriate pump is active. AutomaticTower Return Air Temp Fail Tower return air temperature sensor is enabled and failed. AutomaticTower Supply Air Temp Fail Tower supply air temperature sensor is enabled and failed. AutomaticStorage Tank Temp Fail Storage tank temperature sensor is enabled and failed. AutomaticGeothermal Temp Fail Geothermal temperature sensor is enabled and failed. AutomaticBoiler Supply Temp Fail Boiler supply temperature sensor is enabled and failed. AutomaticBoiler Return Temp Fail Boiler return temperature sensor is enabled and failed. AutomaticHeat Exchanger Return Temp Fail Heat exchanger return temperature sensor is enabled and failed. AutomaticHeat Exchanger Supply Temp Fail Heat exchanger supply temperature sensor is enabled and failed. AutomaticOA Humidity Sensor Fail OA Humidity sensor is enabled and failed. Automatic

Alarm MonitoringThe MicroTech III Unit Controller provides individual alarm identification through a unique value for each alarm. The value assigned to each alarm is the same for both BACnet applications.

BACnetMicroTech III Unit Controllers may have alarms monitored by one of four methods: 1) individually by BACnet Binary Value Objects, 2) alarm value using one BACnet Analog Values, 3) alarm class or 4) Notification Classes.

1. To monitor alarms individually, read the Present_Value of the desired Binary Value. Each alarm has its own Binary Value object. If the Present_Value is Inactive (0), the alarm is not active. If the Present_Value is Active (1), the alarm is active.

2. To monitor alarms by alarm value, read the Present_Value property of the Alarm Value Analog Value object. The Present_Value displays a value that corresponds to the highest priority alarm that is active. It is possible to have multiple active alarms, but only the highest priority is displayed. For example, if there is a simultaneous Unoccupancy Limit Protect Warning (value of 24) and a Emergency Stop Fault (value of 250), then the Emergency Stop Fault value of 250 will display in the Present_Value because it is the higher priority alarm of the two. Once the Emergency Stop Fault condition is corrected and the fault is cleared, the next priority active alarm value (in this example, value of 24 for Unoccupancy Limit Protect Warning) is displayed. The values for all alarms are described in the Alarms section tables. If the Present_Value displays a zero, there are no active alarms.

3. To monitor alarms by alarm class, read the Present_Value of the appropriate Analog Value object (Warnings, Problems and Faults). The Present_Value displays a value that corresponds to the highest priority alarm that is active. It is possible to have multiple active alarms, but only the highest priority is displayed.

4. To monitor alarms using the Notification Class objects, see the Alarm Notification section.


alarms

Alarm NotificationThe MicroTech III Unit Controller has three Notification Class objects for alarms and uses intrinsic reporting which allows the controller to generate event notifications directed to one or more recipients (maximum 20 recipients). There is one notification class object for each class of alarms (faults, problems and warnings). You must subscribe to the notification class objects in order to use them. The Recipient List property must indicate when and to which device notification should be made. This is a standard BACnet data type as defined in ANSI/ASHRAE 135-2008, BACnet A Data Communication Protocol for Building Automation and Control Networks.

The Event_Enable property of each object can be used to separeatly enable and disable reporting of To-OffNormal, To-Fault, and To-Normal events. For example, if you do not want an event to be generated when the object returns to a normal state after being in alarm, set the To-Normal bit of the objects Event_Enable property to 0. The tables below show the objects that support intrisic reporting grouped with the notification classes they report to:

Notification Class 1 (Faults)

Alarm Object Type Object InstanceEvent_Enable (Default)

To-OffNormal To-Fault To-NormalHigh Supply Temperature Fault AI 1 ● ● ●Low Supply Temperature Fault AI 1 ● ● ●High Return Temperature Fault AI 2 ● ● ●Low Return Temperature Fault AI 2 ● ● ●Head Pressure Sensor Fault AI 9 ● ● ●Low Head Pressure AI 9 ● ● ●High Head Pressure AI 9 ● ● ●Outside Air Sensor Fault AI 5 ● ●Loop Return Sensor Fault AI 2 ● ● ●Loop Supply Sensor Fault AI 1 ● ● ●Main Loop Pump Fail BV 21 ● ●Emergency Stop BV 1 ● ●

Notification Class 2 (Problems)


To-OffNormal To-Fault To-NormalMain Loop Pump 2 Fail BV 17 ● ●Main Loop Pump 1 Fail BV 18 ● ●Boiler Pumps Fail BV 20 ● ●Tower Pumps Fail BV 22 ● ●Low Return Temp Problem AI 11 ● ● ●High Return Temp Problem AI 11 ● ● ●Return Temperature Sensor Problem AI 11 ● ● ●

alarms


Notification Class 3 (Warnings)


To-OffNormal To-Fault To-NormalUnoccLimProtect BV 2 ● ●SecPump2Manual BV 3 ● ●SecPump1Manual BV 4 ● ●Pump2Manual BV 5 ● ●Pump1Manual BV 6 ● ●Secondary Loop Switch 2 Stuck Fail BV 7 ● ●Secondary Loop Switch 1 Stuck Fail BV 8 ● ●Main Loop Switch 2 Stuck Fail BV 9 ● ●Main Loop Switch 1 Stuck Fail BV 10 ● ●Secondary Loop Pump 2 Fail BV 15 ● ●Secondary Loop Pump1 Fail BV 16 ● ●Tower Return Air Temp Fail AI 7 ● ●Tower Supply Air Temp Fail AI 6 ● ●Storage Tank Temp Fail AI 8 ● ●Geothermal Temp Fail AI 13 ● ●Boiler Supply Temp Fail AI 3 ● ●Boiler Return Temp Fail AI 4 ● ●Heat Exchanger Return Temp Fail AI 15 ● ●Heat Exchanger Supply Temp Fail AI 14 ● ●OA Humidity Sensor Fail AI 10 ● ●

Recipient List PropertyThe recipient list property (Recipient_List), of the Notification Class object, is a list of standard BACnet data type BACnetDestination elements. This data type consists of the following elements:

Element Standard BACnet Data Type Description

Valid Days BACnetDaysOfWeek The set of days of the week that the destination may be used between the From Time and the To Time

From Time, To Time Time The window of time (inclusive) when the destination is visible on the days of the week in Valid Days

Recipient BACnet Recipient The destination devices to receive the notification. A maximum of 20 destination devices is supported.

Process Identifier Unsigned The handle of a process within the recipient device that is to receive the event notification

Issue Confirmed Notification Boolean (TRUE) if confirmed notifications are to be sent and (FALSE) if unconfirmed notifications are to be sent

Transitions BACnetEventTransitionBits A set of three flags that indicate the transition (TO-OFFNORMAL, TO-FAULT, and TO-NORMAL that the recipient is suitable.

If the BACnet workstation or BACnet device supports intrinsic alarming, but is unable to subscribe to the recipient list property of the notification class object, the workstation or device can still receive alarm notification by adding its Device Instance to the “NC Dev 1=” or “NC Dev 2=” items on the keypad/display. These items are located on the IP Setup or MSTP Setup menus. Power must by cycled for changes to these items to take effect. Once power is cycled, the unit controller sends out a “Who-Is” command directed at the device. If the device reponds, the unit controller sends out Unconfirmed Notifications for all alarms that are generated in the application. If the device does not respond to the Who-Is, the unit controller will periodically send out the Who-Is until the device responds.


alarms

Notification Class - FaultsKeypad Menu Path No Keypad Equivalent

These read/write properties allows subsciption to alarm notifications. The Recipient_List conveys a list of one or more recipients to which notifications will be sent. The Ack_Required property tells wether acknoledgment is requird in notifications generated for To-OffNormal, To-Fault, and To-Normal event transistions. The Priority conveys the priority to be used for event notifications to To-OffNormal, To-Fault and To-Normal events. See the Alarm Notification section (see page 47) for more information including a list of objects that report events to this notification class.


Notification N/A List of BACnetDestination N/A N/A


Notification Class 15 1 recipient_list 102Full Reference<Device Name>.NC1-Faults.recipient_list1, 21. If the BACnet Workstation is unable to subscribe to the recipient_list, you

can still subscribe to alarms on the unit controller keypad/display. Navigate to the IP Setup or MSTP Setup menu and enter the Device Instance of the device to receive the alarms in the “NC Dev 1=” or “NC Dev 2=” entries. You must cycle power after changing these properties from the keypad/display.

2. Maximum of 20 recipients at one time.


Notification Class 15 1 Ack_Required 1Full Reference<Device Name>.NC1-Faults.Ack_Required


Notification Class 15 1 Priority 86Full Reference<Device Name>.NC1-Faults.Priority11. A lower number indicates a higher priority.

Notification Class - ProblemsKeypad Menu Path No Keypad Equivalent





Notification Class 15 2 recipient_list 102Full Reference<Device Name>.NC2-Problems.recipient_list1, 21. If the BACnet Workstation is unable to subscribe to the recipient_list, you

can still subscribe to alarms on the unit controller keypad/display. Navigate to the IP Setup or MSTP Setup menu and enter the Device Instance of the device to receive the alarms in the “NC Dev 1=” or “NC Dev 2=” entries. You must cycle power after changing these properties from the keypad/display.



Notification Class 15 2 Ack_Required 1Full Reference<Device Name>.NC1- Problems.Ack_Required


Notification Class 15 2 Priority 86Full Reference<Device Name>.NC1- Problems.Priority11. A lower number indicates a higher priority.

alarms


Notification Class - WarningsKeypad Menu Path No Keypad Equivalent





Notification Class 15 3 recipient_list 102

Full Reference<Device Name>.NC3-Warnings.recipient_list1, 2

1. If the BACnet Workstation is unable to subscribe to the recipient_list, you can still subscribe to alarms on the unit controller keypad/display. Navigate to the IP Setup or MSTP Setup menu and enter the Device Instance of the device to receive the alarms in the “NC Dev 1=” or “NC Dev 2=” entries. You must cycle power after changing these properties from the keypad display.



Notification Class 15 3 Ack_Required 1Full Reference<Device Name>.NC3-Warnings.Ack_Required


Notification Class 15 3 Priority 86Full Reference<Device Name>.NC3-Warnings.Priority11. A lower number indicates a higher priority.


alarms

Alarm ValueKeypad Menu Path No Keypad Equivalent

This object allows individual notification of the highest priority active alarm. The value in the table below is the largest number in its enumeration that corresponds to an active alarm. This object is set to zero if no alarms are active.

Measurement Units Data Type Valid Range Default ValueAlarms N/A Real Enumerated N/A

Object Identifier PropertyObject Type Type ID Instance Name IDAnalog Value 2 66 Present_Value 85Full Reference<Device Name>.AlarmValue.Present_ValueProperty Value0-No Alarm24-UnoccLimProtect28-SecPump2Manual32-SecPump1Manual36-Pump2Manual40-Pump1Manual44-SecLpSw2Stick48-SecLpSw1Stick50-SecPump2Fail51-SecPump1Fail 52-MainPmp2SwStuck56-MainPmp1SwStuck60=TowerReturnTempFail61=TowerSupplyTempFail65=StorageTankTempFail68=GeothermalTempFail70=BoilerSupplyTempFail71=BoilerReturnTempFail75=HeatXchrRATempFail76=HeatXchrSupplyTempFail80=OAHumiditySensFail204-HiLoopSupplyTemp205-LoRATFlt206-HiRATFlt208-LoSupplyTmpFlt209-HeadPressureSensFlt210-LoHeadPressure212-HighHeadPressure112-MainPump2Fail116-MainPump1Fail120–BoilerPumpsFail122-TowerPumpsFail 124-LoRATProb128-HiRATProb132-RATSensorProb232-OutsideAirSensFault235-LpReturnSensFlt238-LpSupplySensFlt248-MainLpPumpFail250-EmergStop

Warning AlarmKeypad Menu Path No Keypad Equivalent

This object allows individual notification of the highest priority active warning alarm. The value in the table below is the largest number in its enumeration that corresponds to an active alarm. This object is set to zero if no warning alarms are active.


Object Identifier PropertyObject Type Type ID Instance Name IDAnalog Value 2 67 Present_Value 85Full Reference<Device Name>.ActiveWarning.Present_ValueEnumeration0-No Active Alarms24-UnoccLimProtect28-SecPump2Manual32-SecPump1Manual36-Pump2Manual40-Pump1Manual44-SecLpSw2Stick48-SecLpSw1Stick50-SecPump2Fail51-SecPump1Fail 52-MainPmp2SwStuck56-MainPmp1SwStuck60=TowerReturnTempFail61=TowerSupplyTempFail65=StorageTankTempFail68=GeothermalTempFail70=BoilerSupplyTempFail71=BoilerReturnTempFail 75=HeatXchrRATempFail76=HeatXchrSupplyTempFail80=OAHumiditySensFail

alarms


Problem AlarmKeypad Menu Path No Keypad Equivalent

This object allows individual notification of the highest priority active problem alarm. The value in the table below is the largest number in its enumeration that corresponds to an active alarm. This object is set to zero if no fault alarms are active.


Object Identifier PropertyObject Type Type ID Instance Name IDAnalog Value 2 49 Present_Value 85Full Reference<Device Name>.ActiveProblem.Present_ValueEnumeration0-No Active Alarms112-MainPump2Fail116-MainPump1Fail120-BoilerPumpsFail122-TowerPumpsFail124-LoRATProb128-HiRATProb132-RATSensorProb

Fault AlarmKeypad Menu Path No Keypad Equivalent

This object allows individual notification of the highest priority active fault alarm. The value in the table below is the largest number in its enumeration that corresponds to an active alarm. This object is set to zero if no fault alarms are active.


Object Identifier PropertyObject Type Type ID Instance Name IDAnalog Value 2 68 Present_Value 85Full Reference<Device Name>.ActiveFault.Present_ValueEnumeration0-No Active Alarms204-HiLoopSupplyTempFlt205-LoRATFlt206-HiRATFlt208-LoSupplyTmpFlt209-HeadPressureSensFlt210-LoHeadPressure212-HighHeadPressure232-OutsideAirSensFault235-LpReturnSensFlt238-LpSupplySensFlt248-MainLpPumpFail250-EmergStop


alarms

Boiler Pumps Fail Problem Keypad Menu Path No Keypad Equivalent

This read-only BACnet object indicates whether the Boiler Pumps Fail Problem alarm is active (1) or not (0).


Object Identifier PropertyObject Type Type ID Instance Name IDBinary Value 5 20 Present_Value 85

Full Reference<Device Name>.BoilerPumpsFailProb.Present_ValueEnumeration0 – Normal1 – Alarm

Emergency Stop FaultKeypad Menu Path No Keypad Equivalent

This read-only BACnet object indicates whether the Emergency Stop Fault alarm is active (1) or not active (0).



Full Reference<Device Name>.EmgStop.Present_ValueEnumeration0 – Normal1 – Alarm

Main Loop Pump 1 Fail Keypad Menu Path No Keypad Equivalent

This read-only BACnet object indicates whether the Main Loop Pump 1 Fault alarm is active (1) or not (0).



Full Reference<Device Name>.MainLpPmp1Fail.Present_ValueEnumeration0 – Normal1 – Alarm

Main Loop Pump 2 Fail Keypad Menu Path No Keypad Equivalent

This read-only BACnet object indicates whether the Main Loop Pump 2 Fault alarm is active (1) or not (0).



Full Reference<Device Name>.MainLpPmp2Fail.Present_ValueEnumeration0 – Normal1 – Alarm

Main Loop Pump Shut Down Fault Keypad Menu Path No Keypad Equivalent

This read-only BACnet object indicates whether the Main Loop Pump Shut Down Fault alarm is active (1) or not (0).



Full Reference<Device Name>.MainLpPmpSDFl.Present_ValueEnumeration0 – Normal1 – Alarm

Main Loop Switch 1 Stuck Fail Keypad Menu Path No Keypad Equivalent

This read-only BACnet object indicates whether the Main Loop Switch 1 Stick Fault alarm is active (1) or not (0).



Full Reference<Device Name>.MainLpSw1StkFl.Present_ValueEnumeration0 – Normal1 – Alarm

alarms


Main Loop Switch 2 Stuck Fail Keypad Menu Path No Keypad Equivalent

This read-only BACnet object indicates whether the Main Loop Switch 2 Stick Fault alarm is active (1) or not (0).



Full Reference<Device Name>.MainLpSw2StkFl.Present_ValueEnumeration0 – Normal1 – Alarm

Pump 1 Manual Fail Keypad Menu Path No Keypad Equivalent

This read-only BACnet object indicates whether the Pump 1 Manual Fault alarm is active (1) or not (0).



Full Reference<Device Name>.Pmp1ManFl.Present_ValueEnumeration0 – Normal1 – Alarm

Pump 2 Manual Fail Keypad Menu Path No Keypad Equivalent

This read-only BACnet object indicates whether the Pump 2 Manual Fault alarm is active (1) or not (0).



Full Reference<Device Name>.Pmp2ManFl.Present_ValueEnumeration0 – Normal1 – Alarm

Secondary Loop Pump 1 Fail Keypad Menu Path No Keypad Equivalent

This read-only BACnet object indicates whether the Second Loop Pump 1 Fault alarm is active (1) or not (0).



Full Reference<Device Name>.SecLpPmp1Fl.Present_ValueEnumeration0 – Normal1 – Alarm

Secondary Loop Pump 2 Fail Keypad Menu Path No Keypad Equivalent

This read-only BACnet object indicates whether the Second Loop Pump 2 Fault alarm is active (1) or not (0).



Full Reference<Device Name>.SecLpPmp2Fl.Present_ValueEnumeration0 – Normal1 – Alarm

Secondary Loop Switch 1 Stick FailKeypad Menu Path No Keypad Equivalent

This read-only BACnet object indicates whether the Second Loop Switch 1 Stick Fault alarm is active (1) or not (0).



Full Reference<Device Name>.SecLpSw1StkFl.Present_ValueEnumeration0 – Normal1 – Alarm


alarms

Secondary Loop Switch 2 Stick FailKeypad Menu Path No Keypad Equivalent

This read-only BACnet object indicates whether the Second Loop Switch 2 Stick Fault alarm is active (1) or not (0).



Full Reference<Device Name>.SecLpSw2StkFl.Present_ValueEnumeration0 – Normal1 – Alarm

Secondary Pump 1 Manual Fail Keypad Menu Path No Keypad Equivalent

This read-only BACnet object indicates whether the Second Pump 1 Manual Fault alarm is active (1) or not (0).



Full Reference<Device Name>.SecPmp1ManFl.Present_ValueEnumeration0 – Normal1 – Alarm

Secondary Pump 2 Manual Fail Keypad Menu Path No Keypad Equivalent

This read-only BACnet object indicates whether the Second Pump 2 Manual Fault alarm is active (1) or not (0).



Full Reference<Device Name>.SecPmp2ManFl.Present_ValueEnumeration0 – Normal1 – Alarm

Tower Pumps Fail Problem Keypad Menu Path No Keypad Equivalent

This read-only BACnet object indicates whether the Tower Pumps Fail Problem alarm is active (1) or not (0).



Full Reference<Device Name>.TowerPumpsFailProb.Present_ValueEnumeration0 – Normal1 – Alarm

UnoccLimProtect Keypad Menu Path No Keypad Equivalent

This read-only BACnet object indicates whether the Unoccupancy Limit Protection Warning alarm is active (1) or not (0).



Full Reference<Device Name>.UnoccLmPro.Present_ValueEnumeration0 – Normal1 – Alarm

baCneT deviCe managemenT


baCneT deviCe managemenT

The following functions are specific to the BACnet device. These functions are used for maintenance and testing. A network management tool such as VTS is typically used to issue the network commands.

DeviceCommunicationControl - DisableThe purpose of this command is to reduce network traffic for diagnostic testing of the BACnet network. When the BACnet Communication module receives a network command to Disable communications it stops communicating information to the network. An optional time may be specified for how long to suspend communications. The unit continues to operate during the Disabled state.

DeviceCommunicationControl - EnableWhen the BACnet Communication module receives a network command to Enable communications, MicroTech III LWC communications to BACnet is restored.

ReinitializeDevice (Reset) When the BACnet Communication module is capable of receiving a network ReinitializeDevice command to reboot itself (cold start or warm start). The funcationality of a cold and warm start are the same and simple reboot the BACnet Communication module. No password is required.


baCneT file objeCTs

baCneT file objeCTs

The MicroTech III unit controller contains several file objects that may be available via BACnet. Whether or not the objects are available depends on the firmware version of the BACnet communication module attached to the unit controller. NOTE: The file objects described below are only available

with BACnet firmware (BSP) version 9.26 and later. Earlier versions of the BACnet firmware do not support these objects.

BACnet Client Config File Keypad Menu Path No Keypad Equivalent

This file contains the BACnet client configuration. However, the MicroTech III unit controller acts as a server (versus a client), so the BACnet Client Config File does not apply to this application.

Object Identifier PropertyObject Type Type ID Instance File Access Method ID

File 10 1 Stream-access (1) 41Full Reference<Device Name>.BACnetClientConfig

BACnet COV Config File Keypad Menu Path No Keypad Equivalent

This file contains the BACnet Change of Value (COV) configuration.


File 10 2 Stream-access (1) 41Full Reference<Device Name>.BACnetCOVConfig

Error Log File Keypad Menu Path No Keypad Equivalent

This is the error log file for the BACnet communication module. The information displayed in the error log may vary depending on the BAS.


File 10 3 Stream-access (1) 41Full Reference<Device Name>.ErrorLog

History Log File Keypad Menu Path No Keypad Equivalent

This is the history log file for the BACnet communication module.


File 10 4 Stream-access (1) 41Full Reference<Device Name>.HistoryLog

BACnet Event Enrollment Config FileKeypad Menu Path No Keypad Equivalent

This is the BACnet Event Enrollment Configuration file.


File 10 5 Stream-access (1) 41Full Reference<Device Name>.BACnetEventEnrollmentConfig

EDE File Keypad Menu Path No Keypad Equivalent

This is the engineering data exchange file of this controller. This file details the BACnet interface of the unit controller. It describes what points are available and information about each point.


File 10 6 Stream-access (1) 41Full Reference<Device Name>.EDE-File

EDE File – State Text Keypad Menu Path No Keypad Equivalent

This is the engineering data exchange file of this controller with state text. This file details the BACnet interface of the unit controller. It describes what points are available and information about each point.


File 10 7 Stream-access (1) 41Full Reference<Device Name>.EDE-File_StateText

aPPendix a


aPPendix a

Protocol Implementation Conformance Statement (PICS)This section contains the Protocol Implementation Conformance Statement (PICS) for the MicroTech III Loop Water Unit Controller from Daikin Applied as required by ANSI/ASHRAE (American National Standards Institute/American Society of Heating, Refrigeration, and Air Conditioning Engineers) Standard 135-2008, BACnet; A Data Communication Protocol for Building Automation and Control Networks.

BACnet Protocol Implementation Conformance StatementDate: September 2011Vendor Name: Daikin International

Product Name: MicroTech III Loop Water Unit Controller

Product Model Number: MTIII_LWCApplication Software Version: 2506017306Firmware Revision: 9.28BACnet Protocol Revision: Version 1

Revision 6

Product DescriptionThe MicroTech III Unit Controller with optional BACnet Communication Module is a microprocessor-based controller designed to operate a Daikin Loop Water Unit Controller and be integrated into BACnet building automation systems.

The controller provides normal temperature, static pressure and ventilation control and alarm monitoring with alarm-specific component shutdown in critical system conditions. Access to temperatures, pressures, operating states, alarm messages, control parameters and schedules is available through an equipment-mounted keypad/display and the BACnet control network.

BACnet Standardized Device ProfileBased on BIBBs supported, the MicroTech III Unit Controller with optional BACnet Communications Module is a BACnet Advanced Application Controller (B-AAC). Refer to the section below entitled BACnet Interoperability Building Blocks (BIBBs) Supported for a complete listing of BIBBS.

BACnet Interoperability Building Blocks (BIBBs) SupportedBIBB Name DesignationData Sharing – ReadProperty – B DS-RP-BData Sharing – ReadPropertyMultiple – B DS-RPM-BData Sharing – WriteProperty – B DS-WP-BData Sharing – WritePropertyMultiple – B DS-WPM-BData Sharing – COV – B DS-COV-BData Sharing – ReadProperty – A DS-RP-AData Sharing – WriteProperty – A DS-WP-AData Sharing – COV – A DS-COV-AAlarm & Event – Notification Internal - B AE-N-I-BAlarm & Event – ACK –B AE-ACK-BAlarm & Event – Information - B AE-INFO-BAlarm & Event – Alarm Summary - B AE-ASUM-BScheduling – Internal - B SCHED-I-BDevice Management – Dynamic Device Binding – A DM-DDB-ADevice Management – Dynamic Device Binding – B DM-DDB-BDevice Management – Dynamic Object Binding – B DM-DOB-BDevice Management – Device Communication Control – B DM-DCC-BDevice Management – TimeSynchronization – B DM-TS-BDevice Management – UTCTimeSynchronization – B DM-UTS-BDevice Management – Reinitialize Device – B DM-RD-BDevice Management – List Manipulation – B DM-LM-B


aPPendix a

Standard Object Types SupportedObject-Type Creatable Deleteable Optional Properties Supported Writeable Properties not Required to be Writeable

Analog Input

Description Reliability COV_Increment High_Limit Low_Limit Notification_Class Min_Pres_Value Max_Pres_Value Deadband Acked_Transitions Event_Enable Notify_Type Limit_Enable Time_Delay Event_Time_Stamps

Present_Value1 COV_Increment2 Event_Enable

Analog Output

Description Reliability Min_Pres_Value Max_Pres_Value COV_Increment Time_Delay Notification_Class High_Limit Low_Limit Deadband Limit_Enable Event_Enable Acked_Transistions Notify_Type Event_Time_Stamps

Present_Value1 COV_Increment2 Event_Enable

Analog Value

Description Reliability Priority_Array Relinquish_Default COV_Increment Time_Delay Notification_Class High_Limit Low_Limit Deadband Limit_Enable Event_Enable Acked_Transistions Notify_Type Event_Time_Stamps

Present_Value COV_Increment2 Event_Enable

Binary Input

Description Reliability Inactive_Text Active_Text Notification_Class Acked_Transitions Event_Enable Alarm_Value Notify_Type Time_Delay Event_Time_Stamps

Present_Value Event_Enable Elapsed_Active_Time (only 0)

Binary Output

Description Reliability Inactive_Text Active_Text Notification_Class Feedback_Value Acked_Transitions Event_Enable Notify_Type Time_Delay Event_Time_Stamps

Present_Value Event_Enable Elapsed_Active_Time (only 0)

Binary Value

Description Reliability Inactive_Text Active_Text Priority_Array Relinquish_Default Notification_Class Acked_Transitions Event_Enable Alarm_Value Notify_Type Time_Delay Event_Time_Stamps Event_Enable

Present_Value Elapsed_Active_Time (only 0)

aPPendix a


Object-Type Creatable Deleteable Optional Properties Supported Writeable Properties not Required to be Writeable

Device

Description Location Active_Cov_Subsription (<=50) Local_Time Local_Date UTC_Offset ADPU_Segment_Timeout Daylight_Savings_Status Max_Segments_Accepted Max_Master (MS/TP only) Max_Info_Frames (MS/TP only)

Description Location Max_ADPU_Length_Accepted(1476>= x >=50) UTC_Offset Max_Segments_Accepted ADPU_Segment_Timeout (>100) APDU_Timeout (>100) Number_Of_APDU_Retries Segmentation_Supported Max_Master (MS/TP only) Max_Info_Frames (MS/TP only) Backup_Failure_Timeout (9-65535)

Multi-State Input

Description State_Text Notification_Class Acked_Transitions Event_Enable Notify_Type Time_Delay Alarm_Values Fault_Values Reliability Event_Time_Stamps

Multi-State Output

Description Reliability State_Text Notification_Class Acked_Transitions Event_Enable Notify_Type Time_Delay Event_Time_Stamps Feedback_Value

Event_Enable

Multi-State Value

Description Priority_Array Relinquish_Default Notification_Class Reliability Acked_Transitions Event_Enable Alarm_Values Fault_Values Notify_Type Time_Delay Event_Time_Stamps State_Text

Present_Value1 Event_Enable

Notification Class Description Recipient_List (Max 20)

Priority Ack_Required

Calendar Description Date_List (Max 10)

Schedule

Weekly_Schedule Exception_Schedule

Object_Name Effective_Period Weekly_Schedule Exception_Schedule List_Of_Object_Property_Refs

1. Some objects of this type are read only. For those objects, the Present_Value is not commandable or writable.2. Changes to this property do not take effect until the power is cycled on the unit controller. After changing COV_Increment, you must wait at least one minute before

cycling power. Otherwise, this change will not be saved.


aPPendix a

Data Link Layer Options BACnet IP, (Annex J)

BACnet IP, (Annex J), Foreign Device

MS/TP master (Clause 9), baud rate(s): 9600, 19200, 38400, 76800

MS/TP slave (Clause 9), baud rate(s):

Segmentation Capability Segmented requests supported Window Size: 1

Segmented responses supported Window Size: 1

Device Address BindingStatic Device Binding Yes No

Networking Options Router, Clause 6 – List all routing configurations, e.g., ARCNET-Ethernet, Ethernet-MS/TP, etc.

Annex H, BACnet Tunneling Router over IP

BACnet/IP Broadcast Management Device (BBMD)

Number of BDT entries: 10

Does the BBMD Support registration by Foreign Devices? Yes No

Character Sets Supported ANSI X3.4 ISO 8859-1

IBM®/Microsoft® DBCS ISO 10646 (UCS-2)

JIS C 6226 ISO 10646 (UCS-4)

NOTE: Support for multiple character sets does not imply they can be supported simultaneously

ED 19015-1 (11/13) ©2013 Daikin Applied | (800) 432–1342 | www.DaikinApplied.com

Daikin Applied Training and DevelopmentNow that you have made an investment in modern, efficient Daikin equipment, its care should be a high priority. For training information on all Daikin HVAC products, please visit us at www.DaikinApplied.com and click on Training, or call 540-248-9646 and ask for the Training Department.

Warranty

All Daikin equipment is sold pursuant to its standard terms and conditions of sale, including Limited Product Warranty. Consult your local Daikin Applied representative for warranty details. To find your local Daikin Applied representative, go to www.DaikinApplied.com.

Aftermarket Services

To find your local parts office, visit www.DaikinApplied.com or call 800-37PARTS (800-377-2787). To find your local service office, visit www.DaikinApplied.com or call 800-432-1342.

This document contains the most current product information as of this printing. For the most up-to-date product information, please go to www.DaikinApplied.com.

Products manufactured in an ISO Certified Facility.

Date post:	10-Jul-2020
Category:	Documents
Upload:	others
View:	1 times
Download:	0 times