Allied Air 4SHP13 series Installation Instructions Manual page 5

Installing Refrigerant Line
During the installation of an air conditioning system, it is
important to properly isolate the refrigerant line to prevent
unnecessary vibration. Line set contact with the structure
(wall, ceiling, or floor) may cause objectionable noise when
vibration is translated into sound. As a result, more energy
or vibration can be expected. Close attention to line set
isolation must be observed. If refrigeration lines are routed
through a wall, seal and isolate the opening so vibration is
not transmitted to the building.
Following are some points to consider when placing and
installing a high-efficiency outdoor unit:
Placement
Be aware that some localities are adopting sound ordinances
based on how noisy the unit is at the neighbor's home, not
at the original installation. Install the unit as far as possible
from the property line. When possible, do not install the unit
directly outside a bedroom window. Glass has a very high
level of sound transmission. Figure 4 shows how to place
the outdoor unit and line set to reduce line set vibration.
To hang line set from joist or rafter,
use either metal strapping material
or anchored heavy nylon wire ties.
Strapping Material
(around vapor line only)
506762-01
Refrigerant Line Sets: Installing Horizontal Ru
Floor Joist or
Roof Rafter
Metal Sleeve
Tape or Wire Tie
Outside Unit Placement and Installation
Two 90° elbows installed in lineset
will reduce lineset vibration
Line Set Isolation
Illustrations on the following pages demonstrate procedures
which ensure proper refrigerant line set isolation. Figure 5
shows how to install line sets on horizontal runs. Figure 6
shows how to make a transition from horizontal to vertical
and Figure 7 on page 6 shows how to install line sets on
vertical runs.
8'
8'
Floor Joist or Roof Rafter
Figure 5
Issue 1143
Install unit away
from windows
Figure 4
ns
Wire Tie
(around vapor line only)
Tape or Wire Tie
Strap the vapor line to the joist or rafter
at 8 intervals then strap the liquid line '
to the vapor line.
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