Manual 2100-385B
Page
7
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.
PROPER UNIT PLACEMENT
Refer to Technical Bulletin TB01-4 “Wall Mount
Equipment Clearance for Proper Operation”. This
bulletin will provide information concerning the
placement of units as to clearance between dual unit
installation (mounted on common wall) of units
discharging against a wall or essentially solid barrier,
and units discharging against opposing (facing) units.
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. However, it is
highly recommended that a 1-inch clearance is used
for ease of installation and maintaining the required
clearance to combustible material. See Figures 3
and 4 for details.
3. Locate and mark lag bolt locations and bottom
bracket location, if desired. See Figure 3.
4. Mount bottom mounting bracket, if used.
INSTALLATION INSTRUCTIONS
5. Hook top rain flashing under back bend of top. Top
rain flashing is shipped secured to the right side of
the back.
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
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.
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.
MIS-1641
