Specifications

6
440 01 1024 04
Specifications are subject to change without notice
Installation
CARBON MONOXIDE POISONING HAZARD
Failure to follow this warning could result in
personal injury or death.
This furnace can NOT be common vented or
connected to any type B, BW or L vent or vent
connector, nor to any portion of a factory−built or
masonry chimney. If this furnace is replacing a
previously common-vented furnace, it may be
necessary to resize the existing vent and chimney to
prevent oversizing problems for the other
remaining appliance(s). See Venting and Combus-
tion Air Check in Gas Vent Installation section. This
furnace MUST be vented to the outside.
!
WARNING
Location and Clearances
1. Refer to Figure 1 or Figure 2 for typical installation and
basic connecting parts required. Refer to Figure 5 for
typical horizontal direct vent installation and basic
connecting parts required. Supply and return air plenums
and duct are also required.
2. If furnace is a replacement, it is usually best to install the
furnace where the old one was. Choose the location or
evaluate the existing location based upon the minimum
clearance and furnace dimensions (Figure 3).
Figure 1
Typical Upflow Installation
Vent Pipes MUST be
supported
Horizontally and
Vertically
*8″ (203.2mm) Min.
20′ (6.1m) Max.
in same atmospheric zone
*8″ (203.2mm) Min.
20′ (6.1m) Max.
in same
atmospheric
zone
Coupling on ends of
exhaust pipe. Total
pipe & coupling out
side structure = 8″
(203.2mm)
Aluminum or non-rusting shield recommended. (See Vent
Termination Shielding for dimensions).
* Increase minimum from 8 (203.2mm) to 18 (457.2mm) for cold climates (sus
tained temperatures 0F (-17C) and below for 24 or more consecutive hours).
DISCHARGE AIR
25−23−33
Inlet Pipe
(not used on
Single Pipe
model)
Figure 2 Typical Downflow Installation
*8″ (203.2mm) Min.
20′ (6.1m) Max. in
same atmospheric zone
Vent Pipes MUST
be supported Hori
zontally and Vertically
* Increase minimum from 8 (203.2mm) to 18 (457.2mm) for cold climates (sus
tained temperatures 0F (-17C) and below for 24 or more consecutive hours).
See Vent Termination
Shielding in Vent Section.
*8″ (203.2mm) Min.
20′ (6.1m) Max.
in same
atmospheric zone
8″ Min.
Coupling on inside
and outside of wall to
restrain vent pipe
25−23−33a
Inlet Pipe
(not used on
Single Pipe
model)
CARBON MONOXIDE POISONING HAZARD
Failure to follow this warning could result in
personal injury or death.
Do NOT operate furnace in a corrosive atmosphere
containing chlorine, fluorine or any other damaging
chemicals, which could shorten furnace life.
Refer to Combustion & Ventilation Air section,
Contaminated Combustion Air for combustion air
evaluation and remedy.
!
WARNING
FROZEN AND BURST WATER PIPE HAZARD
Failure to follow this caution may result in property
damage.
Special precautions MUST be made if installing
furnace in an area which may drop below freezing.
This can cause improper operation or damage to
equipment. If furnace environment has the potential
of freezing, the drain trap and drainline must be
protected. The use of electric heat tape or RV
antifreeze is recommended for these installations.
(See “Condensate Trap Freeze Protection Section”)
!
CAUTION
Do NOT operate furnace in a corrosive atmosphere
containing chlorine, fluorine or any other damaging
chemicals. Refer to Combustion & Ventilation Air section,
Contaminated Combustion Air.