Ductworkand Filter(Downflow) - ICP 8MPT Installation Insrtuctions

Internal Filter in Bottom Return Installation
When installing _bottom-mounted filter inside the furnace, install
the filter clips on the edge of the bottom duct opening with the wid-
er end of the clips toward the blower, as shown in Figure 26. Clips
may be obtained from your distributor or fabricated from sheet
metal (Figure 27). Insert filter into side clips first and push filter
back until it is fully engaged into back clip.
Bottom Mounted Filter
Center Clip ,/
side to side _
Note: If filters are only suitable for heating application, advise
homeowner that filter size may need to be increased if air condi-
tioning is added.
Addition Of Air Conditioning
When a refrigeration coil is used in conjunction with this furnace, it
must be installed on the discharge side of the furnace to avoid
condensation on the heat exchanger. All furnaces are designed
with a break-away duct flange on the supply air side of the fur-
nace. This allows for installation in the horizontal right or downflow
applications. The coil installation instructions must be consulted
for proper colt location and installation procedures. With a parallel
flow arrangement, dampers must be installed to prevent chilled air
from entering the furnace. If manually operated dampers are
used, they must be equipped with a means to prevent operation of
either unit unless the damper is in full heat or full cool position.
Copper or plastic tubing may be used for the condensate drain
line.
Filter Clip Construction in(mm)
_._'(38.1) _ --.. . _,,
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\>\ \ J T
26 Ga. Galvanized Steel "_.\
FAST part number 1008482 _'\_,/ 11/16" (27)
11. Ductwork and Filter (Downflow)
CARBON MONOXIDE POISONING HAZARD
Failure to properly seal duct could result in
personal injury or death.
Do NOT draw return air from inside a closet or utility
room where furnace is located. Return air duct
MUST be sealed to furnace casing.
FIRE HAZARD
Side return air duct(s) could cause excessive
furnace and/or air temperatures, which could
result in personal injury, death and/or property
damage.
Return air duct is to be connected to only the top of
downflow furnace.
BURN HAZARD
Failure to properly install vent shield could result in
personal injury or death.
The vent may be hot.
Vent Shield
A vent shield is required for all downflow installations. The vent
Must exit out the side of the furnace for all downflow installations.
This places the hot vent pipe (over 300 ° F) within reach of children.
The vent shield attaches to side of furnace to cover vent pipe. See
Figure 4 in "Installation" section.
Outlet Duct Flange
Downflow installations with cased coils require the furnace outlet
duct flange to be bent outward and flat to mate the outlet of the fur-
nace to the cased coil.
27
Specifications are subject to change without notice
441 01 202301