Vertiv Liebert CRV Plus - Page 40

Vertiv | Liebert CRV+ | User Manual 30
The unit has refrigerating pipe connectors and labels on its top and bottom as shown in Figure 2-21 and
Figure 2-22.
During welding, do not burn the labels. The labels assist and point out the connections to the discharge
pipe and liquid pipe of the indoor unit. The horizontal sections of the discharge pipes must be tilted
downwards from the compressor with a slope of at least 1:200 (5mm down for every 1m run). The
discharge pipes must be insulated from heat at the location they are routed in the conditioned space
(including the raised floor).
Figure 2-21 Top pipe connectors
Figure 2-22 Bottom Pipe connectors
 For bottom piping, before welding the compressor discharge pipe and liquid pipe, follow the
requirement labeled on the copper pipe; Cut the copper pipe using a cutter (a little bit of
the compressor lubricating oil may leak); however, do not weld the copper cap on the seal
directly as it may result in heating of the oil following which it may catch fire.
 The exposure time of the system pipes should not exceed 15 minutes. If exposed for too
long, it will lead to the POE refrigeration oil being affected with damp. It may result in an
adverse effect on the life of the key components and the stability of the system operation.
进水孔
排水孔
液管孔
排气管孔
进线孔
进线孔
Cable entry hole
Discharge pipe hole
Cable entry hole
Liquid pipe hole
Drainage hole
Water inlet hole
Drain hole
Cable entry hole
Liquid pipe hole
Discharge pipe hole