4 ● gForce Ultra User Manual 10-2014
3.13 Wiring Diagrams ..................................................................................................31
4. INSTALLATION OF REMOTE OUTDOOR HEAT EXCHANGER ................................ 32
5. CHARGING ....................................................................................................... 32
5.1 General Charging Guidelines .................................................................................32
5.2 Voltage Phase Check ............................................................................................32
5.2.1 Evaporator ........................................................................................... 32
5.2.2 Secondary Heat Exchanger .................................................................... 33
5.2.3 Fan Speed Control System .................................................................... 34
5.3 Air Cooled Systems ..............................................................................................34
5.3.1 Charging .............................................................................................. 34
5.3.2 Flooded System Charging ...................................................................... 37
5.4 Water/Glycol System ............................................................................................41
5.4.1 Water/Glycol Cooled System Charging ................................................... 41
5.5 Check a Running Compressor ................................................................................42
5.6 Refrigerant Handling ............................................................................................42
5.7 Commissioning ....................................................................................................43
5.8 Important Refrigeration Components .....................................................................43
5.8.1 Variable Capacity Compressor with VFD ................................................. 43
5.8.2 Electronic Expansion Valve .................................................................... 44
5.8.3 High Pressure Cutout Switch ................................................................. 44
5.8.4 Low Pressure Cutout Switch .................................................................. 44
5.8.5 Liquid Line Solenoid Valve ..................................................................... 44
6. GLYCOL SYSTEMS ............................................................................................ 46
6.1 Glycol Concentration ............................................................................................46
6.2 Internal (Fluid) Volume – Downflow Units ..............................................................46
6.3 Internal (Fluid) Volume – Upflow Units ..................................................................46
6.4 Internal (Fluid) Volume – Fluid Coolers ..................................................................47
6.4.1 Fluid Cooler Information........................................................................ 47
7. Variable Speed Compressor............................................................................... 48
7.1 Features ..............................................................................................................48
7.2 Oil Management ..................................................................................................48
7.3 Crankcase Heaters ...............................................................................................48
7.4 Oil Level ..............................................................................................................49
7.5 VFD Drive ............................................................................................................50
7.5.1 Local Control for Charging ..................................................................... 51
7.5.2 View Drive Alarms ................................................................................ 52
8. CONTROLS ...................................................................................................... 53
8.1 dap4™ Microprocessor Control Panel .....................................................................53
8.1.1 Control Module ..................................................................................... 53
8.1.2 Display Module ..................................................................................... 54
8.1.3 Buttons ................................................................................................ 54
8.1.4 Accessing Menus/Passwords .................................................................. 54
8.1.5 Changing the Service Level Password..................................................... 56
8.2 Entering Menu Settings ........................................................................................56