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Refrigerant Connections
Liebert
®
CRV
™
26
6.3 Vacuum and Refrigerant Charge
NOTICE
Risk of improper refrigerant charge. Can cause equipment damage and reduced efficiency.
Check the refrigerant type to be used on the data plate of the air conditioner and on the
refrigerating compressor.
Topping up is requested for short pipeline, too, due to the extra-charge of refrigerant.
The air conditioner is supplied pressurized with helium at 1 bar.
Table 12 R-410A refrigerant and oil charge for air-cooled models
Model
Base
Refrigerant
Charge
1
lb (kg)
Base Oil Charge
1
Max. System
Refrigerant Charge
before Oil Addition,
lb (kg)
Weight of Oil to Add for
Every 10lb (4.5kg) of
Refrigerant over Max
System Charge,
oz (kg)
Initial Oil
Charge
oz (kg)
Max. Topping
Up
oz (kg)
CR020RA 7 (3.2) 60 (1.68) 56 (1.57) 38 (17.1) 1.6 (.045)
CR035RA 10 (4.5) 110 (3.08) 106 (2.97) 28 (12.6) 4 (.113)
1. The recommended oil is EMKARATE RL 32-3MA.
Table 13 Refrigerant charge
1
External Pipe Diameter
in (mm)
Gas R-410A,
lb/feet (kg/m)
Liquid (+), at Different Condensing
Temperatures - R-410A, lb/ft (kg/m)
95°F (35°C) 115°F (46°C) 135°F (57°C)
1/2" x 0.049 (12 x 1) - 0.05 (0.08) 0.05 (0.07) 0.04 (0.07)
9/16" x 0.049 (14 x 1) 0.0084 (0.0124) 0.07 (0.11) 0.07 (0.11) 0.06 (0.10)
5/8" x 0.049 (16 x 1) 0.0114 (0.0169) 0.10 (0.16) 0.10 (0.14) 0.09 (0.13)
3/4" x 0.049 (18 x 1) 0.0149 (0.0221) 0.14 (0.20) 0.13 (0.19) 0.11 (0.17)
7/8" x 0.065 (22 x 1.25) 0.0232 (0.0346) — — —
1-1/8" x 0.065 (28 x 1.5) 0.0392 (0.0584) — — —
(+) Liquid pressure and density varies according to condensing temperature (see refrigerant tables).
1. For distance D see Figure 16 Pipeline air conditioner - condenser
Table 14 Air-cooled condenser refrigerant charge
Model
VFD
Liebert Lee-Temp
™
(inc. receiver)
lb (kg) lb (kg)
28 K 7 (3.2) 41 (18.6)
60 K 16 (7.3) 75 (34.0)
90 K 25 (11.3) 109 (49.4)
Table 15 Refrigerant and oil charge for water-cooled models
Model
R-410A
Refrigerant Charge
Initial Oil
Charge
1
lb (kg) oz (kg)
CR020RW 13.0 (5.9) 60 (1.68)
CR035RW 17.0 (7.7) 110 (3.08)
The air conditioner is supplied complete with refrigerant and oil.
1. The recommended oil is EMKARATE RL 32-3MA.
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