2 AGZ 025D through 190D OMM 1166-1
Table of Contents
Introduction ........................................3
Operating/Standby Limits ............................ 9
Pressure Drop Curves ........................9
Minimum Allowable Flow Rates ................. 9
Pressure Drop Curves ................................ 10
MicroTech III Controller .............13
Controller Section Table of Contents ......... 13
Security ...................................................... 20
Unit Functions ..................................20
Definitions ................................................. 20
Unit Enable ................................................ 21
Unit Mode Selection .................................. 22
Unit States .................................................. 22
Power Up Start Delay ................................ 23
Ice Mode Start Delay ................................. 23
Unit Status ................................................. 23
Evaporator Pump Control .......................... 24
LWT Target ................................................ 25
Unit Capacity Control ................................ 26
Unit Capacity Overrides ............................ 27
Circuit Functions..............................29
Definitions ................................................. 29
Circuit Control Logic ................................. 29
Pumpdown Procedure ................................ 31
Low Ambient Starts ................................... 31
Circuit Status ............................................. 31
Compressor Control ................................... 31
Condenser Fan Control .............................. 32
EXV Control .............................................. 34
Liquid Line Solenoid Valve ....................... 35
Hot Gas Bypass Solenoid Valve ................ 35
Capacity Overrides – Limits of Operation . 35
Alarms ...............................................35
Unit Fault Alarms ....................................... 35
Unit Problem Alarms .................................. 37
Unit Warning Alarms .................................. 38
Circuit Fault Alarms ................................... 38
Circuit Events ............................................. 40
Circuit Warning Alarms .............................. 41
Events ............................................... 41
Unit Events ................................................. 42
Circuit Events ............................................. 42
Clearing AlarmsError! Bookmark not defined.
Using the Controller ........................ 44
Navigating .................................................. 45
Menus ......................................................... 47
Optional Low Ambient Fan VFD .. 60
VFD Interface (HMI) ................................. 61
Recommended Periodic Inspection ............ 65
Optional BAS Interface .................. 65
Startup .............................................. 66
Operation ......................................... 68
Unit Maintenance ............................ 73
Planned Maintenance Schedule .................. 74
Service .............................................. 75
R-410A ....................................................... 75
Refrigerant Charging .................................. 76
Evaporator .................................................. 78
AGZ-D Troubleshooting Chart ...... 79
Warranty StatementError! Bookmark not
defined.
Cover picture: AGZ 190D
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©2014 Daikin Applied. Illustrations and data cover the Daikin Applied product at the time of publication and we reserve the right to make
changes in design and construction at anytime without notice.
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