6
Locating & Installing the Supply Damper(s)
CAUTION:
If installing this air conditioning system in
conjunction with a furnace, a damper must be
installed in the furnace base assembly to prevent
cold air from being discharged around the heat
exchanger. Damage to the heat exchanger
and asphyxiation may occur if a damper is not
installed.
Check with the furnace manufacturer for damper
requirements. Failure to install the required
furnace damper may invalidate code agency
listing and limited warranty on the furnace.
When locating the supply damper(s), carefully check floor joists
and frame members that could interfere with the installation of the
damper or flexible duct. Ideally, the damper should be located
in the bottom of the main duct, forward of center of the home,
at least three feet from the nearest register. See
. The
round supply opening in the slanted side of the damper should
face the side of the home where the air conditioner is located.
1. Locate the center of the heat duct by cutting a small hole in
the fiberboard below the duct at the desired location.
2. Cut a hole approximately 3/4” larger than the damper opening
in the fiberboard.
3. Cut a 9-1/8” x 13-1/8” hole in the duct and bend over all tabs
flat on the inside of the heat duct.
4. Insert the damper into the duct and bend over all tabs flat on
the inside of the heat duct.
5. Seal the opening between the fiberboard and damper or
flexible duct.
Condensate Drainage
A 3/4” condensate fitting extends out of the side of the unit
). The drain trap, shipped in the electrical compartment,
must be installed to prevent water from collecting inside the unit.
1. Thread the elbow provided with the unit into the drain
connection until hand tight.
2. Connect the condensate tubing onto the fitting, forming a trap
near the drain connection.
3. Route the condensate tube from the trap to a suitable drain.
NOTE:
For proper drainage, make sure the trap is level to
the ground and tubing outlet is below trap level.
ELECTRICAL CONNECTIONS
WARNING:
ELECTRICAL SHOCK, FIRE OR
EXPLOSION HAZARD
Failure to follow safety warnings exactly could
result in serious injury, death or property damage.
Improper servicing could result in dangerous
operation, serious injury, death or property
damage.
• Before servicing, disconnect all electrical power
to the indoor blower.
• When servicing controls, label all wires prior
to disconnecting. Reconnect wires correctly.
• Verify proper operation after servicing.
• All electrical connections must be in compliance with all
applicable local codes and ordinances, and with the current
revision of the National Electric Code (ANSI/NFPA 70).
• For Canadian installations the electrical connections and
grounding shall comply with the current Canadian Electrical
Code (CSA C22.1 and/or local codes).
Pre-Electrical Checklist
√
Verify that the voltage, frequency, and phase of the supply
source match the specifications on the unit rating plate.
√
Verify that the service provided by the utility is sufficient to
handle the additional load imposed by this equipment. Refer
to the unit wiring label for proper high and low voltage wiring.
√
Verify factory wiring is in accordance with the unit wiring
diagram
.
Inspect for loose connections.
Line Voltage
• A wiring diagram is located on the inside cover of the electrical
box of the unit. The installer should become familiar with the
wiring diagram before making any electrical connections to
the unit.
•
An electrical disconnect must be located within sight
of and readily accessible to the unit.
This switch shall be
capable of electrically de-energizing the unit.
• Line voltage to the unit should be supplied from a dedicated
branch circuit containing the correct fuse or circuit breaker for
the unit. Incoming field wiring and minimum size of electrical
conductors and circuit protection must be in compliance with
information listed on the unit data label. Any other wiring
methods must be acceptable to authority having jurisdiction.
• Provide power supply for the unit in accordance with the
unit wiring diagram, and the unit rating plate. Connect the
line-voltage leads to the terminals on the contactor inside
the control compartment. Extend leads through power wiring
). Connect L1 & L2 directly to the contactor.
Figure 5. Supply Damper
Figure 6. Drain Trap
Elbow
P-Trap
