Bard SH261, Installation Instructions Manual

Page: 9 / 25

Manual 2100-409C
Page
9 of 25
INSTALLATION INSTRUCTIONS
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.
See Figures 4 and 5.
3. Concrete block walls must be thoroughly inspected
to insure that they are capable of carrying the
weight of the installing unit. See Figure 4.
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 it 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 28½" x 10½"
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 12". See Figures 3
and 4 for details.
3. Locate and mark lag bolt locations and bottom
mounting bracket location. See Figure 4.
4. Mount bottom mounting bracket. If used.
5. Hook top rain flashing under back bend of top.
Top rain flashing is shipped attached to the back of
the unit on the right side.
6. Position unit in opening and secure with 5/16 lag
bolts; use 3/4 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.
TYPICAL INSTALLATIONS
See Figure 7 for common ways to install the wall-mount
unit.
WARNING
Failure to provide the 1/4 inch clearance
between the supply duct and a combustible
surface for the first three feet of duct can
result in fire causing damage, bodily injury or
death.