3
Table of Contents
Safety .............................................................................................................................................. 7
LL Series Feature String Nomenclature ....................................................................................... 11
General Information ...................................................................................................................... 19
Codes and Ordinances ............................................................................................................... 19
Receiving Unit ........................................................................................................................... 19
Storage ....................................................................................................................................... 19
Outdoor Mechanical Room ....................................................................................................... 20
Wiring Diagrams ....................................................................................................................... 21
General Maintenance ................................................................................................................. 21
Chiller Primary Pumping .......................................................................................................... 21
Chiller Primary/Secondary Pumping ........................................................................................ 21
Boiler System ............................................................................................................................ 22
Boiler Primary/Secondary Pumping .......................................................................................... 22
Make Up Water ......................................................................................................................... 23
Compression/Expansion Tank ................................................................................................... 23
Pressure Relief Valve ................................................................................................................ 24
Automatic Air Vent ................................................................................................................... 24
Dual Pumps ............................................................................................................................... 24
Pressure Gauges and Thermometers ......................................................................................... 24
Pipe Insulation ........................................................................................................................... 25
Installation..................................................................................................................................... 26
Outdoor Mechanical Room Placement...................................................................................... 26
Curb and Steel Mount Installation ............................................................................................ 26
Lifting and Handling ................................................................................................................. 27
Water Connection ...................................................................................................................... 28
Gas Connection ......................................................................................................................... 29
Boiler Exhaust Connection ........................................................................................................ 29
Boiler Intake Connection .......................................................................................................... 31
Mounting Isolation .................................................................................................................... 31
Access Doors ............................................................................................................................. 31
Low Ambient Operation ............................................................................................................ 31
LAC Valve ............................................................................................................................. 31
OROA Valve ......................................................................................................................... 32
ORI/ORD Valves ................................................................................................................... 33
Condenser Flooding ............................................................................................................... 34
Electrical .................................................................................................................................... 35
Startup ........................................................................................................................................... 38
Axial Flow Condenser Fans ...................................................................................................... 39
General ...................................................................................................................................... 42
Compressors .............................................................................................................................. 42
Refrigerant Filter Driers ............................................................................................................ 42
Evaporator/Heat Exchangers ..................................................................................................... 42
Adjusting Refrigerant Charge ................................................................................................... 42
Lubrication ................................................................................................................................ 47
Air-Cooled Condenser ............................................................................................................... 47
