Daikin McQuay AGZ-D, Operating And Maintenance Manual, Page: 13 / 82

OMM 1087 AGZ 025D through 190D 13
MicroTech
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III Controller
Controller Section Table of Contents
Overview........................................................................................................................14
Controller Inputs and Outputs........................................................................................14
Setpoints ........................................................................................................................16
Security ..........................................................................................................................20
Unit Control Functions ..................................................................................................20
Unit Enable ....................................................................................................................21
Unit Mode Selection ......................................................................................................22
Unit States......................................................................................................................22
Start Delays....................................................................................................................23
Evaporator Pump Control ..............................................................................................24
Leaving Water Temperature (LWT) Reset/Target ..........................................................25
Unit Capacity Control....................................................................................................26
Unit Capacity Overrides……………………………………………………………….27
Circuit Control Functions ..............................................................................................29
Circuit Control Logic.....................................................................................................29
Pumpdown Procedure ....................................................................................................31
Compressor Control.......................................................................................................31
Condenser Fan Control ..................................................................................................32
EXV Control ..................................................................................................................34
Liquid Line Solenoid .....................................................................................................35
Hot Gas Bypass Solenoid ..............................................................................................35
Alarms............................................................................................................................35
Events…………………………………………………………………………....…….41
Clearing Alarms .............................................................................................................43
Using the Controller…………………………………………………………………...44