
REV. 7/7/14 3 3090032.
TO CLEAN FRESH AIR INTAKE FILTER:
A. Follow steps A and B at left
“TO CHANGE SYSTEM FILTER”.
B. Gently pull out the filter from the bottom.
C. Wash the filter with water.
D. Reinstall the filter, by sliding it into the
retaining rail.
E. Replace the access door and turn the
power on to the unit.
2. Keep the outdoor coil clean. Wash it down
with a garden hose if necessary.
BE SURE THE UNIT DISCONNECT IS IN THE “OFF”
POSITION AND THAT ALL ELECTRICAL POWER TO THE
UNIT IS TURNED OFF BEFORE CLEANING THE SYSTEM.
Remove any loose grass, leaves, papers, etc., from the area
around the condenser coil. These could reduce the air
supply through the coil and reduce the amount of cooling
capacity.
3. Since the heat pump is located outdoors, it is exposed to all
weather elements. Treat it with a good automobile paste wax
twice a year (in the spring and fall).
Check with your contractor if you have any questions regarding
the maintenance or operation of your unit.
INSTALLATION
A. CODES
The installer SHALL comply with all local, state, and federal
codes and/or regulations pertaining to this type of equipment
and its installation. Such codes and/or regulations should take
precedence over any recommendations contained herein.
Installations SHALL be made in accordance with the National
Electrical Code, local codes, and recommendations made by
the National Board of Fire Underwriters.
B. UNIT SITE SELECTION
1. To eliminate noise from being transmitted into noise
sensitive areas, the unit should NOT be installed on walls
adjoining bedrooms, sleeping quarters, or adjacent to
windows. To further reduce interior space noise levels,
the unit should be installed in a reinforced location.
2. Locating the unit as close as possible to the main duct
system or area to be conditioned, will prevent lengthy
duct runs and unnecessary thermal and air-pressure
losses.
3. The clearance to combustibles is 0" on all sides, and 1/4"
for the first three (3) feet of supply duct.
4. The condenser air inlets (left, right and bottom inlets)
SHALL be located at least 8" away from walls or other
obstructions for unrestricted airflow.
5. The condenser air outlet should be located at least 6’
away from any obstructions to prevent recirculation of
condenser air.
6. Bottom of the unit SHALL be located at least 12" away
from the ground or other obstructions for unrestricted
airflow.
7. Service clearance is 28" from the electrical box access
panel located on the front of the unit and 28" from the
center, upper, and lower front access panels.
8. The wall selected for unit installation MUST be able to or
be made to safely support the weight of the unit.
9. Do NOT locate where heat, lint or exhaust fumes will be
discharged on the unit (as from dryer vents).
C. UNIT PREPARATION
1. The S Series model units have a separate top rain
flashing accompanying the unit. The bottom-mounting
flange for all models is shipped separately and in place.
(Refer to “Section J. Unit Installation” for the
recommended use of the bottom flange.)
2. Electrical entrances are located on the right side and left
side of all S Series units. Refer to “Section H. Electrical
Hook-up” for details.
3. Firmly attach return and supply air collars to the wall and
install foam air gaskets.
4. The supply and return air ducts should be checked to be
sure they:
a. Match the openings on the unit to be installed.
b. Have the same distance between them vertically as
the openings on the unit to be installed.
5. Return and supply grilles must be used when the return
and supply are not ducted.
6. If the factory-installed filter is used on your installation,
access to the filter is made through the center panel on
the front of the unit.
IF A REMOTE FILTER IS USED, SUCH AS A FILTER
GRILLE, THE FACTORY-INSTALLED FILTER MUST BE
REMOVED AND DISCARDED.
D. DUCTWORK
1. Properly-sized duct systems are critical for satisfactory
operation of any air conditioning system. All ductwork
MUST be correctly sized for the design air flow
requirement of the equipment.
2. For increased static pressure operation, connect the
orange and red wires on the Indoor Blower Motor (IBM)
Signal Cable.
3. The recommended operation duct static is to deduct
0.07" W.C. for any size of heater 5 kW to 20 kW on
factory or field-installed heaters.
4. Ductwork routed through wall cavities, as well as any
duct not in conditioned space, MUST be insulated.
Supply ducting routed through exterior walls MUST be
insulated with 1" insulation to the back of the unit.
5. Supply and return air ducts should be flush with the
exterior wall and sized to fit over the unit duct collars in
order to compress the collar air gasket.
6. If supply duct is flashed to the exterior of a building
constructed with combustible material, the flashing
MUST be insulated in order to maintain the required
clearances to combustible materials. Required
clearance is 1/4" for the first three (3) feet of supply
duct.
E. FILTERS
1. Filter grilles with one-inch disposable filters are supplied
standard in each unit. A filter grille with two-inch disposable
filters can also be used and are available as an option.
2. If a filter grille (other than the one accompanying the unit) is
used in the installation, the filter should be properly sized to
allow a maximum velocity of 400 FPM.
WHEN A FILTER GRILLE IS USED, THE FACTORY-
INSTALLED FILTER MUST BE REMOVED.