Installation; Wall Mounting Information; Mounting The Unit; Table 1 Clearance Required For Service Access And Adequate Condenser Airflow - Bard WA Series Installation Instructions Manual

INSTALLATION

Wall Mounting Information

1. Two holes for the supply and return air openings
must be cut through the wall as shown in Figures
Figures 3A – B on pages 8 and 9.
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 and brick 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. The supply air duct flange and the first 3' of supply
air duct require a minimum of 1/4" clearance to
combustible material for model series W30 and
W36. However, it is generally recommended that
a 1" clearance is used for ease of installation and
maintaining the required clearance to combustible
material. See Figures 3A – B for details on opening
sizes.
WARNING
!
Fire hazard.
Maintain minimum 1/4" clearance between the
supply air duct and combustible materials in
the first 3' of ducting.
Failure to do so could result in fire causing
damage, injury or death.
3. Locate and mark lag bolt locations and bottom
mounting bracket location (see Figures 3A – B).
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" diameter flat washers on the lag
bolts.
7. Secure rain flashing to wall and caulk across entire
length of top (see Figures 3A – B).
Manual 2100-689
Page 6 of 32
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" clearance on right side (on W**A units) to
allow access to control panel and heat strips and
proper airflow to the outdoor coil (20" clearance on
left side on W**L units). Additional clearance may
be required to meet local or national codes.
Clearance Required for Service Access and
Adequate Condenser Airflow
Left
Model
Side
W18A
W24A
15"
W30A
W36A
W18L
W24L
20"
W30L
W36L
NOTE: For side-by-side installation of two W**A
models, there must be 20" between units. This
can be reduced to 15" by using a W**L model
(left side compressor and controls) for the left
unit and W**A (right side compressor and
controls) for right unit.
See Specifications Sheet S3573.
TABLE 2
Minimum Clearances Required
to Combustible Materials
Model Supply Air Duct (1st 3')
W18A, L
0"
W24A, L
W30A, L
1/4"
W36A, L
TABLE 1
Right Discharge
Side Side
20" 10'
15" 10'
Cabinet
0"
0"