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Condensate Drainage
A 3/4" condensate fi tting extends out of the side of the
unit (Figure 3). 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 fi tting, 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.
Elbow
Figure 3. Drain Trap
ITEM
NUMBER
1
12" x 20" Return Air
2
16" x 20" Air Filter
3
12" x 20" Grille
4
Supply Damper
5
14" Diameter Flex Return Duct
6
12" Diameter Flex Supply Duct
7
12" x 12" x 12" "Y" Fitting
Table 1. Typical Applications
SINGLE DUCT APPLICATION
6
P-Trap
DESCRIPTION
Figure 4. Single and Multiple Duct Applications
DUCTING SYSTEM
Air ducts should be installed in accordance with the
standards of the National Fire Protection Association
"Standard for Installation of Air Conditioning and Ventilation
Systems" (NFPA 90A), "Standard for Installation of
Residence Type Warm Air Heating and Air Conditioning
Systems" (NFPA 90B), these instructions, and all applicable
codes.
The supply duct system, including the number and type of
registers, will have much more effect on the performance
of the system than any other factor. The duct must be
suffi ciently large to conduct an adequate amount of air
to each register. See Table 1 and Figure 4.
The air conditioning output of the system will not cool
the home if air is lost to the outside through leaks in
the duct system. Ducts that are collapsed or restricted
by foreign objects will also prevent adequate air fl ow.
Note: For highly resistive duct systems it may be necessary
to add an additional return air duct and or supply to
achieve maximum performance and prevent coil icing
and refrigerant fl ood back.
Installing Return and Supply Air Fittings
The supply and return fi ttings are included with the unit and
located in the supply duct. They attach to the unit openings
(Figure 5, page 7) with a fl ange and bead arrangement
and may be secured with sheet metal screws. For easier
access, install fi ttings before positioning unit in fi nal
location. Air opening sizes are shown in Table 5 (page 13).
Supply Duct
1. Position the supply duct collar so the edge of the unit
opening fi ts between the fl ange and the bead.
2. Overlap the collar ends keeping the small screw holes
underneath.
3. Align the holes in the crimped area and install one
screw. Note: It may be necessary to loosen the four
screws that hold the transition duct in order to install the
supply fi tting. Re-tighten when installation is complete.
MULTIPLE DUCT APPLICATION
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