Manual 2100-594
Page 6 of 19
Clearances Required for Service Access
and Adequate Condenser Airflow
MODELS
LEFT SIDE
RIGHT SIDE
W48A, W60A
20"
20"
W48L, W60L
20"
20"
NOTE: For side by side installation of two (2) 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
WA (right side compressor and controls) for right unit.
See W**A / W**L Specification S3402.
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 1 or 2.
Figure 1 is for models W48A23 and W60A23.
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.
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 30½"
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 32" x 12".
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.
7. Secure rain flashing to wall and caulk across entire
length of top.
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
Fire hazard can result if 1/4 inch clearance to
combustible materials for supply air duct is not
maintained.
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.
TABLE 1
MAXIMUM ESP OF OPERATION
ELECTRIC HEAT ONLY
VALUES SHOWN ARE FOR UNITS EQUIPPED WITH
STANDARD 1" THROWAWAY FILTERS OR 1" WASHABLE
FILTERS. DERATE ESP BY .15 FOR 2" PLEATED FILTERS.
MODELS
ESP
W60A23 - ONLY
W60L23 - ONLY
A05
A10
.4
.3
