LOCATION / PLACEMENT
Site Selection: This furnace may be located in an attic, closet, basement, crawl space, alcove or suspended from the ceiling of a utility room or basement. Select a location that will meet all requirements for safety, clearances, ventilation and combustion air, ductwork design, gas piping, electrical wiring and venting.
Clearances: The following minimum clearances, or greater, must be provided between the furnace and adjacent construction.
TABLE 1 |
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| MINIMUM INSTALLATION CLEARANCES | ||||
"UPFLOW" POSITION | "DOWNFLOW" POSITION | "HORIZONTAL" POSITION | ||||||
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Suitable for alcove or closet | Suitable for alcove or closet installation† on non- | Suitable for attic, alcove or closet installation† on | ||||||
installation† on combustible | combustible flooring at minimum clearance from | combustible flooring at minimum clearance from | ||||||
flooring at minimum | adjacent construction not less than the following: | adjacent construction not less than the following: | ||||||
clearance from adjacent | * Installation on combustible flooring only when | * Line contact only permissible between lines | ||||||
construction not less than | installed on special base (see model & rating label | formed by intersection of the top and two sides of | ||||||
the following: |
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| for proper special base). | the furnace jacket and building joist, studs, or | ||||
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| framing. |
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Top |
| Sides |
| Back |
| Front |
| Vent |
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2" |
| 1" |
| 1" |
| 6" |
| 6" with single wall vent |
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2" |
| 1" |
| 1" |
| 3" |
| 1" with B1 vent |
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†For closet installation see Air for Combustion and Ventilation.
Failure to comply with all of the clearances will create a fire hazard.
INSTALLATION POSITIONS
flooring, on wood flooring in the upflow or horizontal positions, however, it must not be installed directly on carpeting, tile or any other combustible material. In the downflow position, it must be installed on non- combustible flooring, on the special base listed on the rating label OR on a cased coil.
In a horizontal position, line contact with combustibles is only permissible between lines formed by the intersection of the furnace top, the front and back sides, and building joists, studs or framing (See Figure 1).
Figure 1
HORIZONTAL LINE CONTACT
The furnace should also be located as near to the center of the air distribution system as possible, and should be installed level.
This furnace may be installed on
Furnace must not lean back. It must be level or tilt up to 2° to the front. (See Figure 1.)
A clearance of at least 30" should be provided at the front of the unit for servicing. For attic installations, the passageway and servicing area adjacent to the furnace should be floored.
20571201 | Issue 0527 | Page 7 of 28 |