Emerson Liebert CRV 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 C R 0 2 0 R A 1 C 7 S D 1 8 1 1 E L 1 0 P A - Manual (Page 33)

Refrigerant Connections
25 Liebert ® CRV ™
Table 11 Unit connections, air-cooled models
Unit Connections CR20A (50Hz) CR35A (50Hz) CR20A (60Hz) CR35A (60Hz)
RL
Refrigerant Liquid
Line Inlet
12mm O.D. Cu Sweat 16mm O.D. Cu Sweat 1/2" O.D. Cu Sweat 5/8" O.D. Cu Sweat
RG
Refrigerant Gas
Line Outlet
16mm O.D. Cu Sweat 22mm O.D. Cu Sweat 5/8" O.D. Cu Sweat 7/8" O.D. Cu Sweat
GD Gravity Coil Pan Drain 20mm I.D. 1" MPT
GDH Gravity Humidifier Drain 22mm I.D. N/A
CP Condensate Pump 1/2" GAS F 1/2" FPT
HS Humidifier Supply
1/2" GAS F (top connection)
3/4" GAS F (bottom connection)
1/2" FPT (top connection)
1/4" Compression Fitting (bottom connection)
HVT
High Voltage
Top Connection
Combination Knockout
Hole Diameter 1-3/8" (35mm)
1-3/4" (44.5mm) and 2-1/2" (63.5mm)
Combination Knockout Hole
Diameter 1-3/8" (35mm)
1-3/4" (44.5mm) and 2-1/2" (63.5mm)
HVB
High Voltage Bottom
Entrance (feed through
the base of the unit)
Hole Diameter 2-1/2" (63.5mm) Knockout Hole Diameter 2-1/2" (63.5mm)
LVT
Low Voltage
Top Connection
Hole Diameter 7/8" (22mm) 2 places
Knockout Hole Diameter 7/8" (22mm)
2 places
LVB
Low Voltage Bottom
Entrance (feed through
the base of the unit)
Hole Diameter 1-7/64" (28mm) 2 places
Knockout Hole Diameter 1-3/32" (27.8mm)
2 places
LVB
2
Low Voltage Bottom
Entrance (feed through
the base of the unit)
—
Knockout Hole Diameter 1-3/4" (44.5mm)
1 place
Source: DPN001792, Rev.2