SERVICING
47
PVE oils maintain a consistent viscosity over a large temperature range which aids in the oil return to the compressor; however,
there will be some installations which require oil return traps. These installations should be avoided whenever possible, as
adding oil traps to the refrigerant lines also increases the opportunity for debris and moisture to be introduced into the system.
Avoid long running traps in horizontal suction line.
Liquid Line
Suction Line
Wrapped in Armaflex
®
Metal
Sleeve
Hanger
Wall
Stud
Liquid Line
Strapped to
Suction Line
Figure 1-1.
Installation of Refrigeration Piping From Vertical to Horizontal
Outside Wall
Inside Wall
Liquid Line
Suction Line
IMPORTANT
- Refrigerant lines must not touch wall.
Strap
Sleeve
Strap
Sleeve
Wire Tie
Wire Tie
PVC Pipe
Caulk
Outside Wall
Armaflex
Wrapped
Suction Line
®
Liquid
Line
Wood Block
Between Studs
IMPORTANT:
Refrigerant lines must NOT
come into contact with structure.
Fiberglass Insulation
Wood
Block
Figure 1-2. Installation of Refrigerant Piping (Vertical)
New construction shown
NOTE:
If line set is installed on the exterior of an outside wall, similar installation practices are to be used.
