Installation, Operation &
Maintenance Instructions
Large Commercial Series
Water Source Heat Pumps
LCU Series
Page 1: ...Installation Operation Maintenance Instructions Large Commercial Series Water Source Heat Pumps LCU Series...
Page 2: ...Installation 3 Location and Access 4 Installation 4 Installation of Supply and Return Piping 4 Condensate Piping 5 Sound Attenuation for Large Commercial Units 6 Electrical Wiring 6 Wall Mounted Therm...
Page 3: ...after it is removed Inspection Upon receipt of shipment at the job site carefully check the shipment against the bill of lading Make sure all units have been received Inspect the carton or crating of...
Page 4: ...vicing of the compressor and coils without removal of the unit 3 Provide an unobstructed path to the unit within the closet or mechanical room to enable removal of the unit if necessary 4 Provide acce...
Page 5: ...to avoid condensate pan overflow at initial start up DO NOT bend or kink supply lines or hoses Optional pressure rated hose assemblies designed specifically for use with ClimateMaster units are availa...
Page 6: ...hock open the power supply disconnect switch and secure it in an open position during installation Use only copper conductors for field installed electrical wiring Unit terminals are not designed to a...
Page 7: ...nt of 40 F with entering air at 40 F entering water at 40 F and with both air and water at the stated flow rates of ARI Standard 320 96 rating test for initial winter start up Notes 1 These are not no...
Page 8: ...e to equal the rate of bleed 7 Refill the system and add trisodium phosphate in a proportion of approximately one pound per 150 gallons of water Reset the boiler to raise the loop temperature to about...
Page 9: ...ystem Water Temperature Ensure that it is within an acceptable range to facilitate start up When conducting this check also verify proper heating and cooling set points 3 System Water pH Verify system...
Page 10: ...e imme diately after checking cooling cycle operation A time delay will prevent the compressor from re starting for approximately 5 minutes NOTE Large Commercial heat pump units are UNIT START UP WARN...
Page 11: ...ore than 10 of the values noted on the unit nameplate Maintain a log of amperage values to detect deterioration prior to compo nent failure When replacing the compressor contactor or lockout relay in...
Page 12: ...d source the air coil Grounding the condensate overflow signal from the controller causes a fault after 30 continuous seconds Over Under Voltage When the controller senses a voltage over 30Vac or unde...
