Downflow Model Application; Downflow Filters - Coleman P*HU Installation Instruction

035-17405-000 Rev. B (0801)
When suspending the furnace from rafters or floor joists
using rod, pipe or straps, for furnace weights to determine
suitable means of suspension. Refer to Table3 on page6.
Angle supports should be placed at the supply air end and
near the blower deck. Refer to Figure 7 on page13. Do not
support at return air end of unit.
FIGURE 7 : TYPICAL FURNACE INSTALLATION
USING SUSPENSION MATERIALS
Units may also be suspended by using straps or other mate-
rial at the same location. All four suspension points must be
level to ensure quiet furnace operation.

DOWNFLOW MODEL APPLICATION

DOWNFLOW FILTERS

A top return filter rack is supplied with the
furnace. Two 14" x 20" permanent wash-
able filters are supplied with each unit.
Downflow furnaces typically are installed
with the filters located above the furnace,
extending into the return air duct.
Any branch duct must attach to the vertical
ductwork above the filter height (FH). See
dimensions for proper installation. Refer to
Figure 8.
The filter rack (provided) should be secured to the center of
the front and rear flanges at the furnace top. Drill a hole
through the front and rear duct flange into the filter rack and
secure it with a sheet metal screw.
Refer to the unit rating plate for furnace model then see the
dimensions page of this instruction for return air plenum
dimensions. Install the plenum following instructions under
Ductwork in this instruction.
Unitary Products Group
FIGURE 8 : DOWNFLOW FILTERS
FIGURE 9 : COMBUSTIBLE FLOOR BASE
ACCESSORY
13