Pipe lengths calculated for Indoor unit with Airedale Outdoor Unit match.
Tandem Compressor and suction throttle valve applications: In part load, gas velocity should be
taken into account when selecting and commissioning pipework to ensure full oil return.
REMEMBER excessive pressure loss in interconnecting pipework will impair system performance;
this should be factored in during the design of the system and where necessary oil separators
employed.
Refrigerant Pipesizing Guide - X Type Upow
(1) For interconnecting pipework with a predominantly horizontal layout.
(2)
For interconnecting pipework with a predominantly vertical layout.
Indoor Outdoor
Indoor Unit Equivalent Pipe Lengths with R410A
Connection Size 0-15m 15-40m
Liquid Discharge Liquid
Discharge
Liquid
Discharge
Horizontal(1) Vertical(2) Horizontal(1) Vertical(2)
V6X CR12
3/8” 1/2” 3/8” 1/2” 3/8” 3/8” 1/2” 3/8”
V8X CR16
3/8” 1/2” 3/8” 1/2” 1/2” 3/8” 5/8” 1/2”
V10X CR16
3/8” 1/2” 3/8” 5/8” 1/2” 3/8” 5/8” 1/2”
V13X CR22
3/8” 5/8” 3/8” 5/8” 1/2” 1/2” 3/4” 5/8”
V15X CR22
3/8” 5/8” 1/2” 5/8” 5/8” 1/2” 3/4” 5/8”
V17X CR30
3/8” 5/8” 1/2” 3/4” 5/8” 1/2” 7/8” 5/8”
V20X2 CR30
1/2” 7/8” 1/2” 3/4” 5/8” 1/2” 7/8” 3/4”
V22X2 CR50
1/2” 7/8” 1/2” 3/4” 5/8” 5/8” 7/8” 3/4”
V26X2 CR50
1/2” 7/8” 1/2” 3/4” 3/4” 5/8” 7/8” 7/8”
V28X CR50
1/2” 7/8” 5/8” 7/8” 3/4” 5/8” 7/8” 7/8”
V28X2 CR50
1/2” 7/8” 5/8” 7/8” 3/4” 5/8” 7/8” 7/8”
V31X CR50
1/2” 7/8” 5/8” 7/8” 7/8” 5/8” 1 1/8” 7/8”
V31X2 CR50
1/2” 7/8” 5/8” 7/8” 7/8” 5/8” 7/8” 7/8”
V35X CR50
1/2” 7/8” 5/8” 7/8” 7/8” 5/8” 1 1/8” 7/8”
V35X2 CR50
1/2” 7/8” 5/8” 7/8” 7/8” 5/8” 7/8” 7/8”
V40X CR65
5/8” 1 1/8” 5/8” 1 1/8” 7/8” 3/4” 1 1/8” 7/8”
V40X2 CR65
5/8” 1 1/8” 5/8” 7/8” 7/8” 3/4” 7/8” 7/8”
V45X2 CR80
5/8” 1 1/8” 5/8” 7/8” 7/8” 3/4” 7/8” 7/8”
V50X2 CR80
5/8” 1 3/8” 3/4” 1 1/8” 1 1/8” 3/4” 1 1/8” 1 1/8”
V55X2 CR80
5/8” 1 3/8” 3/4” 1 1/8” 1 1/8” 3/4” 1 1/8” 1 1/8”
V60X2 CR80
5/8” 1 3/8” 3/4” 1 1/8” 1 1/8” 7/8” 1 1/8” 1 1/8”
IMPORTANT
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