INSTALLATION
WARNING
Failure to provide the 1/4" clearance between
the supply duct and a combustible surface
for the first 3' of duct can result in fire causing
damage, injury or death.
WALL MOUNTING INFORMATION
1. Two holes for the supply and return air openings
must be cut through the wall as shown in Figure 3.
2. On wood frame walls, the wall construction must
be strong and rigid enough to carry the weight of
the unit without transmitting any unit vibration.
3. Concrete block walls must be thoroughly inspected
to insure that they are capable of carrying the
weight of the installed unit.
NOTE:
Before mounting the heat pump unit,
consideration should be given to the
condensate removal from the outdoor coil
when in heating mode. The unit must be
mounted high enough above grade to ensure
that ice will not build up under the unit and
come into contact with the base of the unit. If
allowed, this could cause damage to the coil
and other base components. Also, be sure
there are no air obstructions to the sides or
front of the unit, such as bushes or fences,
that would inhibit condenser airflow.
MOUNTING THE UNIT
1. These units are secured by wall mounting brackets
which secure the unit to the outside wall surface at
both sides. A bottom mounting bracket, attached
to skid for shipping, is provided for ease of
installation, but is not required.
2. The unit itself is suitable for 0" clearance, but the
supply air duct flange and the first 3' of supply
air duct require a minimum of 1/4" clearance
to combustible material for model series J30,
J36, J42, J48 and J60. However, it is generally
recommended that a 1" clearance is used for
ease of installation and maintaining the required
clearance to combustible material. See Figures
3A-D for details on opening sizes.
3. Locate and mark lag bolt locations and bottom
mounting bracket location (see Figures 3A-D).
4. Mount bottom mounting bracket.
5. Hook top rain flashing, attached to front-right of
supply flange for shipping, under back bend of top.
6. Position unit in opening and secure with fasteners
sufficient for the application such as 5/16" lag/
anchor/carriage bolts; use 7/8" diameter flat washers
on the bolts.
7. Secure rain flashing to wall and caulk across entire
length of top (see Figures 3A-D).
8. For additional mounting rigidity, the return air
and supply air frames or collars can be drilled
and screwed or welded to the structural wall itself
(depending upon wall construction). Be sure to
observe required clearance if combustible wall.
9. On side-by-side installations, maintain a minimum
of 20" clearance on right side to allow access to
control panel and heat strips, and to allow proper
airflow to the outdoor coil. Additional clearance
may be required to meet local or national codes.
NOTE:
Refer to Figures 2
–
7 for dimensions and
various mounting configurations.
Manual 2100-660
Page
6 of 32
Clearances Required for Service Access
and Adequate Condenser Airflow
MODELS
LEFT SIDE
RIGHT SIDE
J18H, J24H, J30H, J36H
15"
20"
J42H, J48H, J60H
20"
20"
Minimum Clearances Required to
Combustible Materials
MODELS
SUPPLY AIR DUCT
FIRST 3'
CABINET
J18H/J24H
0"
0"
J30H/J36H
1/4"
0"
J42H/J48H/J60H
1/4"
0"
