Page 17
VI − REFRIGERANT LINE NOISE
It is important to properly isolate the refrigerant lines to
prevent unnecessary vibration. Line set contact with the
structure (wall,ceiling or floor) causes some objectionable
noise when vibration is translated into sound.
The following illustrations demonstrates procedures which
ensure proper refrigerant line set isolation. Figure 17
shows how to install line sets on vertical runs. Figure 18
shows how to install line sets on horizontal runs. Figure 19
shows how to make a transition from horizontal to vertical.
Finally, figure 20 shows how to place the outdoor unit and
line set.
REFRIGERANT LINE SETS
HOW TO INSTALL VERTICAL RUNS
(new construction shown)
PVC Pipe
Fiber Glass
Insulation
Caulk
Outside Wall
Vapor Line (wrapped
with Armaflex)
Liquid Line
IMPORTANT-Refrigerant
lines must
not contact structure.
Outside Wall
Inside Wall
Liquid Line
Vapor Line
IMPORTANT-Refrigerant lines
must not contact wall.
Wood Block
Between Studs
Strap
Sleeve
Wood Block
Strap
Sleeve
Wire Tie
Wire Tie
Wire Tie
NOTE-Similar installation practices should be used if line
set is to be installed on exterior of outside wall.
FIGURE 17
