Liebert PW017 User Manual

• Do not run piping directly in front of discharge air stream.
• Refrigerant oil – do not mix oil types (see Compressor Oil on page85).
Refer to ASHRAE Refrigeration Handbook for general, good-practice refrigeration piping. The indoor
cooling unit has a factory-installed high-pressure safety switch in the high side refrigerant circuit. Consult
building codes to determine whether condensers without receivers require field-provided pressure relief
devices. A fusible plug kit is available for field installation on condensers without receivers.
NOTE: All indoor and outdoor field refrigerant piping must have at least 1/2 in. of insulation. All outdoor
insulation must be UV and ozone resistant.
5.2.2 Refrigerant Line Sizes and Equivalent Lengths
Table 5.4 below lists requirements for field-installed refrigerant piping for the system.
Model PX011 PX018 PX023 PX029
Equivalent
Length
Hot Gas
Line
Liquid
Line
Hot Gas
Line
Liquid
Line
Hot Gas
Line
Liquid
Line
Hot Gas
Line
Liquid
Line
50 ft. (15 m) 1/2 3/8 5/8 1/2 3/4 5/8 7/8 5/8
100 ft. (30 m) 5/82 1/2 5/8 1/2 3/4 5/8 7/8 5/8
150 ft. (45 m) 5/8
2
1/2 5/8 1/2 3/4 5/8 7/8 5/8
300 ft. (91 m) 5/8
2
1/2 3/4
2
5/8 7/8
2
5/8 1-1/8
2
3/4
1. Contact your Vertiv™ representative for line sizing for runs longer than maximum equivalent length shown in the table.
2. Must down-size vertical riser one trade size (1-1/8” to 7/8”, 7/8” to 3/4”, 3/4” to 5/8”, or 5/8” to 1/2”).
Source: DPN000788, Rev. 5
Table 5.4 Recommended refrigerant line sizes for standard- and digital-scroll
models, OD Copper (inches)
5.2.3 Refrigerant Charge Requirements for Air-cooled Systems
The following tables provide the refrigerant charge requirements for the Liebert PDX, connected piping,
and condenser options.
Model
Downflow,
lb (kg)
Upflow,
lb (kg)
PX011 4.6 (2.1) 5.1 (2.3)
PX018 5.0 (2.3) 7.1 (3.2)
PX023 5.0 (2.3) 7.1 (3.2)
PX029 6.6 (3.0) 7.4 (3.4)
Table 5.5 Approximate R-410A refrigerant charge forair-cooled Liebert PDX
Vertiv | Liebert® PDX™ and PCW™ Installer/User Guide | 36

Liebert PW017 Specifications

General

Brand	Liebert
Model	PW017
Category	Control Unit
Language	English