ICP NDN5050BFA1 User Manual

Set the base over the opening in the floor, centering the
opening in the base over the opening in the floor. Fasten the
base to the floor with screws or nails. See Figure 10 and
Figure 12.
Exploded View of Base for
Figure 10 Furnace ONLY
4. Drop the plenum through the opening in the base. The
flange of the plenum should rest on top of the combustible
floor base.
Subbase for Combustible Floors- Downflow Coil Box
The Subbase for Combustible Floors MUST be used when a
downflow furnace, used with a downflow coil box, is set on
combustible flooring.
Figure 11 Exploded View of Base for
Downflow Cased Coil
Figure 12
Furnace
Subbase
Insulation
Setting the Base
Wood
Wood Floor
NOTE: Supply opening is 37/8" from the rear of the furnace.
Therefore maintain a 37/8', clearance from wall (where applica-
ble).
Cut the opening in the floor according to Table 6. The hole
in the floor must be cut to the dimensions listed in Table 6
since the base is equipped with locating tabs that center the
base over the opening.
The opening in the base is 11/4"(32mm) shorter and 1 1/8"(29mm )
narrower than the recommended size of the opening in the floor.
This is done to provide a 1" clearance between the floor and the
plenum.
2. Fabricate the plenum to the dimensions given in Table 6.
Note that the dimensions given are outside dimensions.
Set the base over the opening in the floor, centering the
opening in the base over the opening in the floor. Fasten the
base to the floor with screws or nails. See Figure 11 and
Figure 12.
Non-Combustible Floor:
Set the furnace over the opening in the floor. If necessary, grout
around the base to seal air leaks between the base and the floor.
Figure 13 Condensate Line Raised by Base
25-20-52
4. Drop the plenum through the opening in the base. The
flange of the plenum should rest on top of the combustible
floor base. Filters:
This subbase for combustible floors has been designed so that The filters supplied with the furnace may be installed in the return
the height of the subbase raises the downflow coil off the floor to air plenum above the furnace. A filter rack is supplied with each
allow easy installation of the condensate drain. See Figure 13. furnace. See Figure 14.

ICP NDN5050BFA1 Specifications

General

Brand	ICP
Model	NDN5050BFA1
Category	Furnace
Language	English