Manual 2100-588A
Page 6 of 29
Clearances Required for Service Access
and Adequate Condenser Airflow
MODELS
LEFT
SIDE
RIGHT
SIDE
DISCHARGE
SIDE
J17A, J24A, J30A, J36A
15"
20"
10'
J17L, J24L, J30L, J36L
20"
15"
10'
J42A, J48A, J60A, J70A
20"
20"
10'
J42L, J48L, J60L, J70L
20"
20"
10'
Minimum Clearances Required to
Combustible Materials
MODELS
SUPPLY AIR DUCT
FIRST THREE FEET CABINET
J17A, L / J24A, L
0"
0"
J30A, L / J36A, L
1/4"
0"
J42A, L / J48A, L
J60A, L / J70A, L
1/4"
0"
NOTE: For side by side installation of two (2) J**A models there
must be 20" between units. This can be reduced to 15" by using a
J**L model (left side compressor and controls) for the left unit and
JA (right side compressor and controls) for right unit.
See J**A Specification S3438 & J**L Specification S3439 & J70
Specification S3440 (Right & Left-Hand).
INSTALLATION INSTRUCTIONS
WARNING
Failure to provide the 1/4 inch clearance
between the supply duct and a combustible
surface for the first 3 feet 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 Figures 3A-3C.
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.
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. Models J17 and J24 are suitable for 0 inch clearance
to the unit and the supply air duct. Models
J30-J70 require 1/4 inch clearance to combustible
materials to the supply air duct flange and the first
3 feet of supply air duct. However, it is generally
recommended that a 1-inch clearance is used for
ease of installation and maintaining the required
clearance to combustible material. See Figure 3 for
details on opening sizes.
3. Locate and mark lag bolt locations and bottom
mounting bracket location. See Figures 3A - 3C.
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 5/16 lag
bolts; use 7/8 inch diameter flat washers on the lag
bolts.
7. Secure rain flashing to wall and caulk across entire
length of top. See Figures 3A - 3C.
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 inches 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.