Manual 2100-193
Page 7
INSTALLATION INSTRUCTIONS
3. Concrete block walls must be thoroughly inspected to
insure that they are capable of carrying the weight of
the unit installed.
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 is provided
for ease of installation, but is not required.
2. The unit itself is suitable for “0” inch clearance but
the supply air duct flange and the first 3 feet of
supply air duct require a minimum of 1/4 inch
clearance to combustible material. If a combustible
wall, use a minimum of 28-1/2" x 8-1/2" dimensions
for sizing. However, it is generally recommended that
a 1 inch clearance is used for ease of installation and
maintaining the required clearance to combustible
material. The supply air opening would then be 30" x
10". See Figures 3, 4, 5 and 6 for details.
WARNING
Fire hazard can result if 1/4 inch clearance
to combustible materials for supply air duct
is not maintained. See 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.
WALL MOUNTING INFORMATION
1. Two holes, for the supply and return air openings,
must be cut through the wall as shown in Figure 3.
3. Locate and mark lag bolt locations and bottom
mounting bracket location. See Figure 3.
4. Mount bottom mounting bracket, if used.
5. Hook top rain flashing under back bend of top. Top
rain flashing is shipped secured to the back of the
unit on the right side.
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 Figure 3.
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
heat strips and control panel and to allow proper
airflow to the outdoor coil. Additional clearance may
be required to meet local or national codes.
TOP OUTLET ONLY
1. Remove airframe angles from the back of the unit.
2. Coat angles with two 1/8" beads of silicone as shown.
Silicone is shipped in the control panel. See Figure 5.
3. Secure angles to the top of the unit with 14 screws
provided. Use prepunched holes provided. Do not
relocate. See Figure 5.
4. After installation of duct work, seal around airframe
and duct work to provide a rain tight seal.
5. It is strongly recommended, but not required, that this
unit be installed under a soffit area large enough to
shield the top of the unit. See Figure 6.
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.
