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FIGURE 13 - KNOCKOUT DIMENSIONS
MODELS: 6008831 / 6008832
Surface Mount Installation
FIND THE STUDS AND CEILING JOISTS
(See CAUTION on page 7)
Find two studs at spot where furnace is to be placed. Use
a stud indicator or small finishing nails. Repeatedly drive
and remove a nail into the wall in the area of the stud until
you find it. Then find one side. Leave the nail there. Drive
another nail just on the other side of the same stud.
Inside edge of the other stud should be about 14 1/2 inches
from the one found. Drive finishing nail on inside edge of
this stud.
Using the nails as a guide, draw a line up both sides to the
ceiling to locate hole cut out for vent pipe and electrical
connections.
CUT CEILING OPENING
Mark off and cut 3 1/2 x 12 inch rectangular hole in ceiling,
centered between wall studs. The back edge of the opening
should be about 1/8 inch from the wall. As shown on Page
14, Figure 16.
ELECTRICAL SUPPLY ROUGH-IN
The electrical supply openings must be made in the wall
or floor below furnace to match holes in furnace bottom.
See Figure 13.
If desired, the power supply and thermostat cable can come
into the wall stud space from a basement, crawl space or an
adjoining stud space.
At selected location, drill a 1 inch hole for 115V power supply
and a ½ inch hole for the thermostat cable.
Run wiring through the holes to the furnace leaving enough
excess wire to make electrical connections after mounting
furnace.
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
furnace, simply remove the knock-out provided in
furnace side.
NOTES
If a pre-existing gas piping stub location is not compatible
with hole or knock-out provided in furnace, you may make
an alternate entry hole in furnace back wall per Figure 14.
CAUTION: Be careful not to damage any furnace
components while making any alternate hole.
Locate and drill one (1) 1-1/2 inch hole at selected location
as shown on Page 12, Figure 11; Page 13, Figure 13, or
Page 13, Figure 14.
Gas line can be run at this time or done after the furnace is
mounted, see section CONNECTING GAS LINE.
FIGURE 14 - ALTERNATE GAS SUPPLY OPENING
MAGNUM FORSAIRE COUNTERFLOW TOP VENT GAS WALL HEATER
13
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