General Vent Installation - Williams 5508332 Owner's Manual

Surface Mount Installation (cont.)
At selected location, drill a 1 inch hole for 115V power
supply and a 1/2 inch hole for the thermostat cable.
Run wiring through holes to above furnace top leaving
enough excess wire to make electrical connections after
mounting furnace.
CAUTION
I e careful not to damage any furnace components
while making any alternate hole.
Locate and drill one (1) 1-1/2 inch hole at selected loca-
tion per Fig. 11, page 11; Fig. 13, page 12; or Fig. 14.
CAUTION
To avoid damage to wiring, be sure to route wire away
from path of furnace vent.
GAS SUPPLY OPENING
A hole may need to be drilled for the gas line supply.
Decide whether the gas line will come through the floor
or wall.
NOTE
If you decide to route gas line through right side of fur-
nace, simply remove the knock-out provided in furnace
side.
NOTE
If a pre-existing gas piping stub location is not compati-
ble with hole or knock-out provided in furnace, you may
make an alternate entry hole in furnace back wall per
Fig. 14.
Gas line can be run at this time or done after the furnace
is mounted, see section CONNECTING GAS LINE.
ALTERNATE GAS SUPPLY OPENING
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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 kit, necessary to complete your
specific venting situation through the roof. Refer to typical
venting system shown in Fig. 18, page 15.
Type B/W gas vent shall extend from the header plate of
the vented wall furnace to a point above the highest ceil-
ing plate within a stud space through which the vent
passes, without any offsets or crossovers thei'ein. 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
gas vent, of the same manufacturer, and offsets or
breakovers shall not be greater than 45 degrees from
vertical.
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 sur-
face mounted.
Make sure that the 4 x 4 inch gasket is in position on the
header plate.
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