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INSTALLING YOUR FURNACE
General Vent Installation
The vent installation must comply with all local codes and
ordinances. If in doubt, consult your local codes or inspector.
The furnace vent must be directed to the outdoors so that
harmful combustion gases will not collect inside the building.
This furnace must not be connected to a chimney flue
serving a separate solid-fuel burning appliance.
Use U.L. listed B/W Vent Kit 9901. You must provide other
items, not contained in the kit, necessary to complete your
specific venting situation through the roof. Refer to typical
venting system as shown on Figure 18.
Type B/W gas vent shall extend from the header plate of the
vented wall furnace to a point above the highest ceiling plate
within a stud space through which the vent passes, without
any offsets or crossovers therein. After a type B/W gas vent
passes through the highest ceiling plate within a stud space
above the furnace which it serves, the vent system may be
completed with a type B vent, of the same manufacturer,
and offsets or break over, shall not be greater than 45 degrees
from vertical. Maximum of two.
NOTE
The B/W vent must extend through the ceiling and roof
terminating at least 12 feet above the finished floor on which
the furnace rests.
First vent pipe offset (if required) is recommended not to be
any closer than 2' 0" from header plate.
ATTACH HEADER & HOLD-DOWN PLATE
(SURFACE MOUNT)
Remove the fiberglass flue collar from the furnace flue
extension. This gasket is not used when the furnace is
surface mounted.
Make sure that the 4 x 4 inch gasket is in position on the
header plate.
Slide header plate over the furnace flue extension with the
junction box entering the opening in top of furnace.
Refer to Figure 15.
FIGURE 15
Fasten to matching holes in the furnace top through
holes "A" in the header plate, using two (2) #8 x 3/8 inch
screws provided.
14
COUNTERFLOW TOP VENT GAS WALL HEATER
Fasten the hold-down plate or starter plate to the top of the
header plate using holes "B" in the header plate.
ALL MODELS
ATTACH HOLD-DOWN PLATE (RECESSED MOUNT)
NOTE
Header plate should already be attached to wall studs. See
ATTACH HEADER PLATE, on Page 11 and 12.
Fasten hold-down plate to top of header plate using two (2)
screws provided.
FIGURE 16
INSTALL CEILING PLATE SPACERS (SURFACE MOUNT)
Refer to Figure 16.
Only one (1) plate spacer is required for surface mounting
within a single story dwelling.
Cut 2 inches off each end of plate spacer.
Drill two (2) 3/16 inch holes in each end of plate spacer as
shown in Figure 16.
Fasten plate spacer to wall by nailing through one (1) drilled
hole in each end, into the wall board and ceiling plate.
INSTALL CEILING PLATE SPACER (RECESSED MOUNT)
Refer to Figure 17.
Two ceiling plate spacers are in the B/W vent kit 9901. They
must be fastened along each long edge of the ceiling hole to
hold the oval vent pipe in the center of the hole.
Nail the ceiling plate spacers either across or in between the
cut out section of ceiling plate. If nailed between, ends must
be bent at 90 degrees.
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