Liebert CR020 User Manual page 72

62 Appendix 4 Refrigerant, Hydraulic And Electrical Connections
2
4
5
16
1
3
15 8 9
Wire bridge
10
13 6 12 11
7
Figure 14 Electrical board layout (50Hz)
Electrical field connecions descriptions (50Hz)
1. Standard electrical connections
1) Primary high voltage entrance - 64mm; 44mm; 35mm diameter concentric knockouts located in bottom of the box.
2) Secondary high voltage entrance - 64mm; 44mm; 35mm diameter concentric knockouts located in top of the box.
3) Primary low voltage entrance - Quantity: 3, 28mm diameter knockouts located in bottom of the unit.
4) Secondary low voltage entrance - Quantity: 3, 28mm diameter knockouts located in top of the box.
5) Earth ground - Terminal for field supplied earth grounding wire.
6) Remote unit shutdown - Replace existing jumper between terminals 52 & 53 with field supplied normally closed
switch having a minimum 75VA, 24Vac rating. Use field supplied Class 1 wiring.
Liebert.CRV Series Air Conditioner User Manual