Liebert PCW - UM - 273895 - 04.10.2018
Contents
1 - General Description ............................................................................................................................................. 1
1.1 - Single chilled water circuit - L- C versions............................................................................................................................................1
1.2 - Double chilled water circuit - X- R versions ..........................................................................................................................................1
1.3 - Operating limits ....................................................................................................................................................................................2
1.3.1 - Noise level limits................................................................................................................................................................................2
2 - Preliminary operations ........................................................................................................................................ 2
2.1 - Safety Information ................................................................................................................................................................................2
2.2 - Equipment Inspection ...........................................................................................................................................................................2
2.3 - Packing material ...................................................................................................................................................................................2
2.4 - Recommended Unit Handling Equipment ............................................................................................................................................3
2.5 - Handling the Unit While Packaged .......................................................................................................................................................3
2.6 - Unpacking the Unit (Standard Height Unit, Coil Module and Fan Module) 3
2.7 - Moving to the Installation Location with Piano Jacks ...........................................................................................................................3
2.8 - Unit Weight ...........................................................................................................................................................................................4
3 - Assembly .............................................................................................................................................................. 4
3.1 - Extended Height unit: Upow ...............................................................................................................................................................4
3.2 - Extended Height unit: Downow Up, Downow Down. ........................................................................................................................5
4 - Positioning ............................................................................................................................................................ 6
4.1 - Positioning: Upow, Downow Frontal, Downow Up. .........................................................................................................................6
4.2 - Positioning: Downow Down. ...............................................................................................................................................................6
5 - Water connections ............................................................................................................................................... 7
5.1 - General warnings .................................................................................................................................................................................7
5.2 - Water connections ................................................................................................................................................................................7
5.2.1 - Condensate drain (for unit without condensate pump) (Fig. a): 7
5.2.2 - Condensate drain for the Extended Height Downow Up and Downow Down units 7
5.2.3 - Condensate Pump.............................................................................................................................................................................7
5.2.4 - Humidier (optional): See Enclosure A..............................................................................................................................................7
5.2.5 - Hot water (optional): ..........................................................................................................................................................................7
5.3 - Chilled water connections ....................................................................................................................................................................7
5.3.1 - Pipe connection Extended Height unit. .............................................................................................................................................8
5.4 - Adding ethylene glycol..........................................................................................................................................................................9
6 - Electrical connections ....................................................................................................................................... 10
6.1 - Electrical connections.........................................................................................................................................................................10
6.2 - Wye vs. Delta Connection Power Supply for PCW ............................................................................................................................10
6.3 - Fan Module Electrical connections (Extended Height unit only) 10
6.4 - Power supply cable connection. .........................................................................................................................................................13
6.6 - Protective features of EC fan .............................................................................................................................................................13
7 - Start- up ............................................................................................................................................................... 13
7.1 - First start - up .....................................................................................................................................................................................13
7.2 - Starting and stopping .........................................................................................................................................................................14
7.3 - Automatic restart ................................................................................................................................................................................14
8 - Operation ............................................................................................................................................................ 14
9 - Calibrations......................................................................................................................................................... 15
9.1 - Chilled water valve .............................................................................................................................................................................15
9.2 - Water leakage sensor (Liquistat) ........................................................................................................................................................15
9.3 - Environment protection ......................................................................................................................................................................15
10 - Maintenance / Spare Parts............................................................................................................................... 16
10.1 - Safety instructions ............................................................................................................................................................................16
10.2 - Spare parts .......................................................................................................................................................................................16
10.3 - Maintenance schedule .....................................................................................................................................................................16
10.4 - Air lter check and replacement .......................................................................................................................................................16
10.5 - EC fan replacement..........................................................................................................................................................................17
10.6 - Dismantling the unit ..........................................................................................................................................................................18