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Cartridge Filter Installation ....................................................................................................... 45
Adjusting Refrigerant Charge ................................................................................................... 45
Before Charging .................................................................................................................... 45
Checking Liquid Sub-Cooling .............................................................................................. 46
Checking Evaporator Superheat............................................................................................ 46
Adjusting Sub-cooling and Superheat Temperatures............................................................ 47
Refrigerant Filter Driers ............................................................................................................ 47
Indirect Gas Heat Startup .......................................................................................................... 49
Access Doors ............................................................................................................................ 50
Operation....................................................................................................................................... 51
Indirect Gas Heater Operation .................................................................................................. 51
Electric Heating Operation ....................................................................................................... 51
Steam or Hot Water Preheating and Heating Operation ........................................................... 51
Packaged DX Cooling Operation ............................................................................................. 51
Chilled Water or Non-Compressorized DX Cooling Operation ............................................... 51
Maintenance .................................................................................................................................. 52
Gas Heating ............................................................................................................................... 52
Direct Fired Gas Heat ............................................................................................................... 52
Ignition Sequence of Operations: ............................................................................................. 53
Safeties: ..................................................................................................................................... 53
Initial Start-up Procedure: ......................................................................................................... 54
First Firing or Restart after Extended Shut-down: .................................................................... 54
General Maintenance Instructions: ........................................................................................... 54
Inspection and Maintenance of Gas Ports: ............................................................................... 55
DX Cooling ............................................................................................................................... 55
Condensate Drain Pans ............................................................................................................. 56
Supply Fans ............................................................................................................................... 56
Lubrication ............................................................................................................................ 56
Filter Replacement .................................................................................................................... 56
Evaporative-Cooled Condenser ................................................................................................ 56
Severe Service ........................................................................................................................... 57
Safety ........................................................................................................................................ 57
Performance .............................................................................................................................. 57
Warranties ................................................................................................................................. 58
Condenser Tube Inspection ...................................................................................................... 58
Freeze Protection ...................................................................................................................... 58
Recirculating Water System ..................................................................................................... 58
Pre Start-Up .............................................................................................................................. 58
Cleanliness ................................................................................................................................ 58
Storage ...................................................................................................................................... 58
Pump Operation ........................................................................................................................ 58
Running ..................................................................................................................................... 59
Condenser Fan Motors .............................................................................................................. 59
Water Makeup Valve ................................................................................................................ 59
Water Treatment System .......................................................................................................... 60
Sequence of Operations ............................................................................................................ 60
