Specifications

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MicroTech III Controller With
LonWorks® Communication Module
ThismanualcoverstheinstallationofaDaikinMcQuay
HorizontalCeilingHungUnit-ModelCCH,CCWWater
Source Heat Pump. For installation and operation information
on LonWorks Communication Module and other ancillary
controlcomponents,see:
• IM927-MicroTechIIIWaterSourceHeatPump
LonWorks Communication Module
• IM933-LonMakerIntegrationPlug-inTool:Forusewith
the MicroTech III Unit Controller
• IM955-MicroTechIIIWallSensorforusewith
Microtech III Unit Controller
Figure 18: LonWorks Communication Module
The LonWorks communication module will plug into the
Microtech III unit controller at the CN_LON1 Header (see
Figure 20 on page 18).
EachDaikinMcQuaywatersourceheatpumpcanbe
equipped with a LonWorks communication module. The
controllerismicroprocessor-basedandisdesignedtocommu-
nicateoveraLonWorkscommunicationsnetwork.Theunit
controller is factory programmed and tested with all the logic
required to monitor and control the unit. The wall thermostat
sets the unit mode of operation. The unit controller monitors
water and air temperatures, and can communicate fault condi-
tions to a LonWorkscommunicationsnetwork.
The MicroTech III unit controller with communication
moduleincludesaunit-mountedreturnair,dischargeairand
leaving water temperature sensor. Wall mounted temperature
sensorsincludesetpointadjustmentandtenantoverride.The
userhasthecapabilityofsubstitutingthewallsensorwitha
duct-mountedreturnairsensor.
Each unit controller orchestrates the following unit
operations:
■ Enableheatingandcoolingtomaintainsetpointbasedon
a room sensor.
■ Enablefanandcompressoroperation.
■ Monitorallequipmentprotectioncontrols.
■ Monitordischargeairtemperature.
■ Monitorleavingwatertemperature.
■ Relaystatusofallvitalunitfunctions.
■ Supportoptionalcontroloutputs.
Anamber,on-boardstatusLEDaidsindiagnosticsbyindi-
cating the water source heat pump operating mode and alarm
conditions. If there are no current alarm conditions, the LED
will indicate the unit operating mode. If there are one or more
alarmconditionspresent,theLEDwillashtoindicatean
alarm condition.
MicroTech III heat pumps with a MicroTech III unit control-
lerareLonMarkcertiedanddesignedtobelinkedwitha
centralizedbuildingautomationsystemthroughaLonWorks
communicationsnetworkforcentralizedschedulingandman-
agementofmultipleheatpumps.Wall-mountedroomsensors
areavailabletocontroltheheatingandcoolingoperationof
each MicroTech III Water Source Heat Pump Unit Controller.
Availableroomsensorsinclude:roomsensorwithLEDstatus
andtenantoverridebutton,roomsensorwithLEDstatus,
timed-overridebutton,roomsensorwithLEDstatus,timed-
overridebutton,andsetpointadjustment,androomsensor
withLEDstatus,timed-overridebutton,setpointadjustment.
The MicroTech III water source heat pump unit controller
providescontrolofDaikinMcQuaywatersourceheatpumps.
Thecontrollerenablesthemodeofoperation,monitorsthe
water and air temperatures, and indicates fault conditions.
Each unit controller is factory programmed, wired, and tested
foreffectiveoperationofyourDaikinMcQuaywatersource
heat pump.
The MicroTech III water source heat pump controller uses
LonWorks technology. One of the following two versions
of the application software is loaded into the controller at the
factory.
LonMark®3.4certiedapplicationcodeisthecurrentstan-
dard application code for MicroTech III units.
MicroTech III Controller with BACnet
Communication Module
For installation and operation information on MicroTech III
unitcontrollerandotherancillarycomponents,see:
■ IM928-MicroTechIIIBACnetCommunicationModule
■ OM931-MicroTechIIIUnitControllerforWaterSource
Heat Pumps Operation and Maintenance Manual
■ IM955-MicroTechIIIWallSensorForusewith
Microtech III Unit Controller
DaikinMcQuaywatersourceheatpumpsareavailablewith
DaikinMcQuayBACnetMS/TPcommunicationmodulethat
isdesignedtocommunicateoveraBACnetMS/TPcommu-
nicationsnetworktoabuildingautomationsystem(BAS).It
canbefactoryoreld-installed.
The unit controller is programmed and tested with all the
logic required to monitor and control the unit. An optional
wallsensormaybeusedwiththecommunicationmoduleto
provide limited local control of the water source heat pump.
The unit controller monitors water and air temperatures and
passes information to the communication module. The mod-
ulecommunicateswiththeBAS,toprovidenetworkcontrol
of the water source heat pump.