Lennox 14HPX-018 Installation Instructions Manual page 6

INSTALLING REFRIGERANT LINE
Pay close attention to line set isolation during installation of
any heat pump or a/c system. When properly isolated from
building structures (walls, ceilings, floors), the refrigerant
lines will not create unnecessary vibration and subsequent
noises. Also, consider the following when placing and
installing a high-efficiency outdoor unit:
1, Placement--Some localities are adopting sound ordi-
nances based on the unit's noise level observed from
the adjacent property, not from the installation proper-
ty. Install the unit as far as possible from the property
line. When possible, do not install the unit directly out-
side a window, Glass has a very high level of sound
transmission. Figure 7 shows how to place the outdoor
unit and line set.
2, Line Set Isolation--The following illustrations dem-
onstrate procedures which ensure proper refrigerant
line set isolation, Figure 8 shows how to install line sets
on vertical runs. Figure 9 shows how to make a transi-
tion from horizontal to vertical. Figure 10 shows how
to install line sets on horizontal runs,
Install unit away
from windows.
Two 90 ° elb_
installed in line set will
• reduce line set vibration.
Figure 7. Unit Placement and Installation
NOTE - Similar instaflation practices should be used it line set Is to be Installed on exterior ot outside wall.
OUTSIDE WALL IMPORTANT - Refrigerant
lines must not contact wall. VAPOR LINE LI UID LINE
IMPORTANT!
Refrigerant
lines must
not contact
structure,
VAPOR LINE WRAPPED
WITH ARMAFLEX LIt?NIED
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CAULK
PVC PIPE FIBERGLASS
INSULATION
WIRE TIE
s INSlDEWALL
STRAP
SLEEVE
WIRE TIE
WOOD BLOCK
WIRE TIE
STRAP
SLEEVE
Figure 8. Refrigerant Line Sets: Installing Vertical Runs (new construction shown
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