Emerson Copeland EazyCool OM 501 Series Application Manuallines page 3

2.12 Pump-down - General ................................................................................................... 21
2.12.1 Digital operation ................................................................................................. 22
2.13 Reset to factory settings - Emerson "Hot Key" ............................................................. 22
2.13.1 How to save factory settings or user settings .................................................... 22
2.13.2 Applicable hot key for OM & OL units with XCM25D controller ......................... 23
2.13.3 Location of the "Hot Key" plug connection on the XCM25D controller .............. 23
2.13.4 How to program a "Hot Key" from the controller (upload) .................................. 23
2.13.5 How to program a controller using an Emerson "Hot Key" (download) ............. 23
2.14 Troubleshooting - Alarm history .................................................................................... 24
2.15 Compressor motor protection ........................................................................................ 25
2.16 System pressure protection ........................................................................................... 25
2.16.1 High-pressure safety switch ............................................................................... 25
2.16.2 High pressure: pressure relief valve ................................................................... 25
2.16.3 Low-pressure safety switch ................................................................................ 25
2.17 Other inputs of the XCM25D controller .......................................................................... 25
2.17.1 Customer-supplied control - Heat recovery / On/Off / Room Thermostat ......... 25
2.17.2 Ambient temperature sensor .............................................................................. 25
2.18 Output of the XCM25D controller - Alarm output (DO5) ............................................... 25
3 Installation ...................................................................................................... 26
3.1 Dimensions in mm ......................................................................................................... 26
3.2 Condensing unit handling .............................................................................................. 27
3.2.1 Transport and storage ........................................................................................ 27
3.2.1 Lifting .................................................................................................................. 27
3.2.2 Weights............................................................................................................... 28
3.2.3 Location & fixings ............................................................................................... 28
3.2.4 Required distances ............................................................................................. 29
3.3 Refrigeration piping connections ................................................................................... 29
3.3.1 Refrigeration piping installation .......................................................................... 29
3.3.2 Connection sizes ................................................................................................ 30
3.3.3 Brazing recommendations.................................................................................. 31
3.3.4 Brazing procedure .............................................................................................. 31
3.4 Electrical connection ...................................................................................................... 32
3.4.1 Power supply connections.................................................................................. 32
3.4.2 Maximum operating currents for cable selection ............................................... 32
3.4.3 Electrical wiring .................................................................................................. 32
3.4.4 Electrical protection standard (protection class) ................................................ 32
4 Starting up & operation.................................................................................. 33
4.1 Evacuation ..................................................................................................................... 33
4.2 Charging procedure ....................................................................................................... 33
4.2.1 Refrigerant charging procedure ......................................................................... 33
C6.1.9/0617/E