Manual 2100-631
Page
11 of 53
7. WALL MOUNTING INFORMATION
1. Two holes for the supply and return air openings
must be cut through the wall as detailed in Figure
4.
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.
8. 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 W42G, W48G and W60G models are suitable
for 0 inch clearance on the installation mounting
wall and to the top. For all models the supply
air duct flange and the first 3 feet of supply air
duct require a minimum of 1-inch clearance to
combustible material. The W24G, W30G and
W36G models are suitable for 0 inch clearance
on the installation mounting wall, but require
1-inch clearance to the top if combustible material
overhang projects above the unit. See Figure 3
and 3A. If a combustible wall, use a minimum
of Figure 1 “A” dimension plus 2 inches and “B”
dimension plus 2 inches. See Figures 4 and 5 for
details.
3. Locate and mark lag bolt locations and bottom
mounting bracket location.
4. Mount bottom mounting bracket.
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. Use lag bolts long enough to support
the unit’s weight when mounted to the structure.
This length may be dependant on the type of
construction.
7. Secure rain flashing to wall and caulk across entire
length of top. See Figures 2 & 2A.
8. On side-by-side installations, maintain a minimum
of 20 inches clearance on right side to allow
access to control panel and burner compartment,
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 one inch clearance
between the supply duct and a combustible
surface for the first three feet of duct can result
in fire causing damage, injury or death.
CAUTION
If the bottom bracket is used, be certain the
bracket is secured to the outside wall surface
in a way sufficient to support the entire
weight of the unit during installation until side
mounting brackets are secured.
