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Installation Instructions
7.2 Horizontal Installation
WARNING: FIRE, EXPLOSION, AND CARBON MONOXIDE
P OISONING HAZARD
Failure to follow this warning could result in personal
f
injury, death, and/or property damage. Do not install
the furnace on its back or hang furnace with control
compartment facing downward. Safety control operation
will be adversely affected. Never connect return-air ducts
to the back of the furnace.
The furnace can be installed horizontally in an attic or crawl space on bottom or
either the left-hand (LH) or right-hand (RH) side (See Figure 9). The furnace can be
hung from floor joists, rafters or trusses or installed on a non-combustible platform,
blocks, bricks or pad.
7.2.1 Furnace Suspension
If suspending the furnace from rafters or joists, use 3/8" threaded rod and
2"x2"x1/8" angle iron as shown in Figure 10. The length of rod will depend on the
application and the clearances necessary. (See Fig. 10 and 11)
Figure 9
Horizontal Application-Setting Equipment
1 4 |
Horizontal Left-Hand Side Installation
FRONT VIEW
Horizontal Right-Hand Side Installation
FRONT VIEW
Tilt the unit slightly (minimum 1/2" (12.7 mm) to maximum of 3/4" (19 mm))
from back to front to aid in the draining of the heat exchanger.
1/2"~3/4"
SIDE VIEW
SIDE VIEW
Bosch 96% AFUE Condensing Gas Furnace - BTC 770503101 J (06.2023)
1/2"~3/4"
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