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SINGLE DUCT APPLiCATiON
MULTIPLE DUCT APPLiCATiON
Figure 3. Single & Multiple Duct Applications
• Ductworkshould
be attached directlytothe
unitflanges
for horizontal applications,
• 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 flood back.
• The heat purnpsysternwill
notcool or heatthe 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 flow,
• All duct work passing through unconditioned
space
must be properly insulated to minimize duct losses
and prevent condensation. Use insulation with an outer
vapor barrier. Refer to local codes for insulation material
requirements,
Transition
Duct
Duct ScreWS Dimples
Supply Air
Figure 4. Return & Supply Air Collars
AIR CONDITIONER
INSTALLATION
Unpacking
the Unit
It is recommended
that the unit be unpacked at the
installation site to minimize damage due to handling,
CAUTION'.
Do not tip the unit
on its side.
Oil may enter
the compressor
cylinders
and cause
starting
trouble,
if unit has been set on its side, restore
to upright
position
and do not run for several
hours.Then
run unit for a few seconds.
Do this
three
or four
times
with five minutes
between
runs,
1. Remove the bands from around the unit.
2. Unfold the top and bottom cap flanges.
3. Carefully remove the top cap and tube,
Installing
Return & Supply Air Collars
If the supply and return collars are supplied with the unit,
they will be located in the supply duct.They can be easily
positioned over the unit openings (Figure 4) and secured
with sheet metal screws.
• The diameter of the return duct collar is 14".
• The diameter of the supply duct collar is 12".
•
Before
permanently
installing
the collars,
it is
recommended you pre-fit them over the openings first
to determine best fit and alignment,
Supply Duct
1. Position the supply duct collar so the edge of the unit
opening fits between the flange 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 fitting, Re-tighten when installation is complete,
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