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Refrigerant Connections
21 Liebert
®
CRV
™
Figure 16 Pipeline air conditioner - condenser
6.2.2 Pipe Diameter and Thickness
!
WARNING
Risk of explosive discharge. Can cause equipment damage, injury or death.
Use only Type ACR copper tubing sized per Tables 7, 8, 9 and 10 for pipes connecting the
Liebert CRV and the condensing unit.
Table 7 Piping and refrigerant sizes for Liebert Lee-Temp
™
condensers with R-410A
Condenser Piping Connection Sizes
Condenser Connections, O.D., in.
Liebert Lee-Temp
Size, in. (mm)
Liebert Lee-Temp Connections, I.D., in.
Condenser Model # Hot Gas Liquid
Hot Gas
Tee
Liquid To
L-T Valve
Receiver
Out
DCSL28K 1-1/8 7/8 9 x 36 (229 x 914) 1-1/8 5/8 7/8
DCSL60K 1-1/8 7/8 11 x 36 (279 x 914) 1-1/8 5/8 7/8
DCSL90K 1-1/8 7/8 11 x 48 (279 x 1219) 1-1/8 5/8 7/8
Source: DPN001623, Rev. 6, Page 3
Table 8 Recommended refrigerant line sizes for Liebert Lee-Temp condensers with R-410A Cu, OD
Liebert CRV Model #
Total Equivalent
Length, ft. (m)
Hot Gas Line,
in. (mm)
Liquid Line,
in. (mm)
CR020RA
50 (15.2) 3/4 (19.1) 5/8 (15.9)
100 (30.5) 3/4 (19.1) 5/8 (15.9)
150 (45.7) 3/4 (19.1) 5/8 (15.9)
300 (91.4) 7/8 (22.2)* 3/4 (19.1)
CR035RA
50 (15.2) 7/8 (22.2) 3/4 (19.1)
100 (30.5) 7/8 (22.2) 3/4 (19.1)
150 (45.7) 7/8 (22.2) 3/4 (19.1)
300 (91.4) 1-1/8 (28.6)* 7/8 (22.2)
Consult factory for proper line sizing for runs longer than 300 ft. (91.4m) equivalent length.
* Must downsize vertical riser one trade size (1-1/8” to 7/8” or 7/8” to 3/4”).
Source: DPN001623, Rev. 6, Page 3
B
C
CDT
COND
A
(Distance) D = A + B + C
CDT = Conditioner
COND = Condenser
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