McQuay IM 938-1, Installation & Maintenance Data

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IM 882 / Page 2 of 36
Now that you have made an investment in modern, efficient McQuay
®
equipment, its care and operation should
be a high priority. For training information on all McQuay HVAC products, please visit us at www.mcquay.com and
click on Training or phone 540-248-0711 and ask for the Training Department.
Table of Contents
Safety Information .......................................................3
Inspection .....................................................................3
Nomenclature ............................................................... 4
Introduction .................................................................. 5
Dimensional Data .......................................................6
Wall Opening Requirements .....................................7
Louver Frame Installation ..................................... 7
Wall Sleeve Extension Installation ........................ 7
Wall Construction Types ....................................... 8
Wall Sleeve Installation ........................................8-12
Thin Wall Construction .................................... 8-10
Thick Wall Construction ...................................... 11
Anchoring Wall Sleeve ........................................ 12
Installation of Louvers .............................................12
Electrical Service ................................................. 12
Installation of Cooling Chassis ..........................12-13
Installation of Heat Section .....................................13
Installation of Room Cabinet ..................................14
Supply and Return Coil Arrangements .................14
Controls
PDAC/PDHP Digital Touchpad Control ...........15-19
Inputs & Outputs ................................................. 15
Keys and Indicators Labels ................................. 15
Display Function Legend .................................... 15
Wireless Remote Control (Option) ...................... 15
Operation .............................................................16-17
Modes of Operation-Description .......................17-19
Control Board Configuration .............................19-20
Incremental Start-up Report Audit ........................21
Equipment Start-up .................................................22
Controls Operating Instructions .......................23-25
Remote Wall Mounted Thermostats ............... 26-28
Wiring Diagrams .................................................28-31
Remote Thermostat Primary/Secondary Unit
Wiring Connections ............................................. 28
Premium (Programmable) Digital Control .......... 29
Premium (Programmable) Digital
Control Board ...................................................... 30
Premium (Programmable) Digital Control
Board with Standby ............................................. 31
Scheduled Maintenance ...........................................32
Equipment Protection from the Environment ..... 32
Recommended Spare Parts .................................33
Refrigeration Cycle ............................................33
Faults and Protection Codes
PTAC/PTHP Control Board ................................ 34
Solid State Digital Controls
LUI Display Codes .............................................. 34
Troubleshooting ...................................................35-36