Operating instructions

2 IMM AGSB-60
Table Of Contents
Introduction........................................3
General Description...................................3
Nomenclature.............................................3
Inspection...................................................3
Installation and Start-up.....................4
Handling ....................................................4
Location.....................................................5
Service Access ...........................................5
Clearance Requirements ............................6
Restricted Airflow......................................7
Vibration Isolators ...................................13
Lifting and Mounting Weights .................16
Chilled Water Pump.................................19
Water Piping ............................................19
System Water Volume..............................21
Variable Speed Pumping..........................21
Evaporator Freeze Protection ..................21
Operating Limits:.....................................23
Flow Switch.............................................23
Water Connections...................................24
Refrigerant Charge...................................24
Glycol Solutions ......................................24
Water Flow and Pressure Drop ........25
Physical Data ...................................27
Dimensional Data ............................30
Wind Baffles and Hail Guards.........32
Electrical Data..................................34
Field Wiring.............................................34
Field Wiring Diagram......................40
Solid State Starters...........................41
Component Location....................... 48
Major Component Location.....................48
Power Panel .............................................50
Control Panel ...........................................51
Optional Features............................ 52
Controls....................................................52
Electrical..................................................52
Unit ..........................................................53
Start-up and Shutdown.................... 54
Extended (Seasonal) Shutdown................55
System Maintenance ....................... 57
General.....................................................57
Compressor Maintenance.........................57
Lubrication...............................................57
Electrical Terminals .................................58
Condensers...............................................58
Liquid Line Sight Glass............................58
Evaporator Sight Glass.............................59
Lead-Lag..................................................59
Preventative Maintenance Schedule.........60
Warranty Statement......................... 60
Service............................................. 61
Liquid Line Filter-Driers..........................61
Compressor Slide Valves..........................62
Electronic Expansion Valve .....................62
Evaporator................................................62
Charging Refrigerant................................63
Charging Oil.............................................66
Standard Controls.....................................66
Controls, Settings and Functions..............71
Troubleshooting Chart .............................72
Periodic Maintenance Log .......................73
Manufactured in an ISO Certified facility
Information covers the McQuay International products at the time of publication and we reserve the right
to make changes in design and construction at anytime without notice.
®™ The following are trademarks or registered trademarks of their respective companies: BACnet from ASHRAE;
L
ONMARK and LONWORKS from Echelon Corporation; GeneSys, McQuay and MicroTech II from McQuay International.
Unit controllers are LONMARK
certified with the optional
LONWORKS
communications module.