Vertiv | Liebert PEX4 | User Manual 35
Installation
2.6. Refrigerant Piping Connection
Select the appropriate dimensions (Pipe diameter & Wall thickness) of pipes connecting the indoor and
outdoor units. Considering the eect of the diameter and wall thickness of copper piping on the pressure drop
of the system, the pipe dimensions of the indoor and outdoor units should be determined according to the
specications in Table 2-9 or consult Vertiv local representative. The recommended dimensions of piping is
given in Table 2-6 & Table 2-7.
Table 2-6 Recommended Dimensions for Piping
Model P1035 P1045 P1050 P1060
P2070 P2080
Pipe
length
D L D L D L D L
D L D L
10m 19/19 16/16 19/19 16/16 19/19 16/16 22/19 16/16
19/19 16/16 19/19 16/16
20m 19/19 16/16 22/19 16/16 22/22 16/16 22/22 19/16
19/19 16/16 22/19 16/16
30m 22/19 16/16 22/22 16/16 22/22 19/16 25/22 19/16
22/19 16/16 22/19 16/16
40m* 22/19 16/16 25/22 19/16 25/22 19/16 25/25 19/19
22/19 16/16 22/22 19/16
50m* 22/22 19/16 25/22 19/16 25/22 19/16 28/25 22/19
22/22 19/16 25/19 19/16
60m* 25/22 19/16 25/22 19/16 28/22 19/19 28/25 22/19
25/22 19/16 25/22 19/16
Table 2-7 Recommended Dimensions for Piping
Model P2090 P2100 P2110 P2120
Pipe
length
D L D L D L D L
10m 19/19 16/16 19/19 16/16 19/19 16/16 22/19 16/16
20m 22/19 16/16 22/22 16/16 22/22 16/16 22/22 19/16
30m 22/22 16/16 22/22 19/16 25/22 19/16 25/22 19/16
40m* 25/22 19/16 25/22 19/16 25/22 19/16 25/25 19/19
50m* 25/22 19/16 25/22 19/16 25/25 19/19 28/25 22/19
60m* 25/22 19/16 28/22 19/19 28/25 22/19 28/25 22/19
Table 2-8 Metric and Imperial Equivalent Values of Piping
Metric/Imperial Equivalents
mm 13 16 19 22 25 28 32 35
inch 1/2 5/8 3/4 7/8 1 1-1/8 >1-1/4 1-3/8