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Upflow
No modifications are required for upflow installation. (See Figure 2)
Typical Upflow Installation
Figure 2
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Pressure Switch Relocation
If the furnace is installed in the upflow position, the pressure switch
will remain in the same position as installed by the factory unless the
inducer is rotated. If the furnace is installed in an orientation that
places the pressure switch below the pressure tap on the inducer
housing, then the switch MUST be relocated. In order to relocate
the switch, locate 2 mounting holes or drill above the inducer
pressure tap. When drilling the 2 holes make sure to keep the switch
and tubing far enough away from the burners or hot surfaces as to
not melt the hose, switch, or wires. To prevent possible kinking of
the pressure switch hose, trim the hose to remove excess length.
Note: When drilling new holes make sure metal shavings do not fall
on or in components, as this can shorten the life of the furnace.
Horizontal
If you purchased a multi--position furnace, it can be installed
horizontally in an attic, basement, crawl space, alcove, or
suspended from a ceiling in a basement or utility room in either a
right or left airflow position. (see Figure 3)
Horizontally installed furnaces may be vented out the top of the
furnace or out the side facing up. See "Side venting" for
instructions to rotate the vent to the side.
The minimum clearances to combustibles MUST be maintained
between the furnace and adjacent construction, as shown in
3. Side Venting
This furnace is shipped from the factory in the upflow configuration
(top vent). It can easily be converted to a side vent configurations for
horizontal installations by rotating the venter assembly.
When using a side vent configuration (side outlet instead of top
outlet), it may be necessary to relocate the pressure switch to the
alternate position on the opposite side of the top panel. Two screw
holes are provided at the alternate position. Route the pressure
switch tubing so the tubing is not kinked and not touching the hot
collector box, venter housing, or motor. It may be necessary to
shorten the length of the tubing to properly route the tubing and
eliminate kinks.
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GAS SUPPLY
25- - 23- - 17
Specifications are subject to change without notice
Figure 1. ONLY the corner of the cabinet is allowed to contact the
rafters as shown in Figure 3. All other clearances MUST be
observed as shown in Figure 1.
Typical Horizontal Installation
Figure 3
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If the furnace is to be suspended from the floor joists in a basement
or crawl space or the rafters in an attic, it is necessary to use steel
pipe straps or an angle iron frame to attach the furnace. These
straps should be attached to the furnace bottom side with sheet
metal screws and to the rafters or joists with bolts. The preferred
method is to use an angle iron frame bolted to the rafters or joists.
If the furnace is to be installed at ground level in a crawl space,
consult local codes. A concrete pad 1" (25.4 mm) to 2" (51 mm)
thick is recommended.
Twenty--four inches (24" or 610 mm) is required between the front of
the furnace and adjacent construction or other appliances. This
should be maintained for service clearance.
Keep all insulating materials clear from louvered door. Insulating
materials may be combustible.
The horizontal furnaces may be installed directly on combustible
wood flooring or supports, however, it is recommended for further
fire protection cement board or sheet metal is placed between the
furnace and the combustible wood floor and extend 12" (305 mm)
beyond the front of the furnace louver door. (This is a
recommendation only, not a requirement).
This furnace MUST NOT be installed directly on carpeting, tile or
other combustible material other than wood flooring or supports.
Rotating the Venter Assembly
1.
If gas and electrical power have already been connected to
furnace, shut off gas and remove power from furnace. Unscrew
screws on burner compartment door and remove burner
compartment door. (see Figure 4.)
2.
Disconnect power leads to the venter motor and hose to
pressure switch. Remove four (4) screws which secure the
venter to the collector box, (see Figure 5).
3.
Cut webbing with a pair of snips holding the vent plate to the
cabinet on either the left or right side of furnace depending on
right or left venting as desired. Discard vent plate, (see
Figure 4).
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OPTIONAL
VENT LOCATION
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441 01 5003 01
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