Tempstar F97CMN Installation, Start-Up, Operating And Service And Maintenance Instructions page 16

F97CMN and G97CMN: Installation, Start-up, Operating and Service and Maintenance Instructions
4. Install special base coil assembly or coil box as shown in
NOTE: It is recommended that the perforated supply-air duct flanges be
completely removed from furnace when installing the furnace on a
factory-supplied cased coil or coil box. To remove the supply-air duct
flange, use wide duct pliers or hand seamers to bend flange back and
forth until it breaks off. Be careful of sharp edges, see
The return-air duct must be connected to return-air opening (bottom
inlet). DO NOT cut into casing sides (left or right). Bypass humidifier
connections should be made at ductwork or coil casing sides exterior to
furnace, see Fig. 21.
Bottom Return Air Inlet
These furnaces are shipped with bottom closure panel installed in bottom
return-air opening. Remove and discard this panel when bottom return
air is used in downflow applications. To remove bottom closure panel,
see Fig. 23.
Horizontal Installation
NOTE: The furnace must be pitched forward as shown in
proper condensate drainage.
FURNACE
CASING
WIDTH
IN. (mm)
Upflow Applications on Combustible or Noncombustible Flooring
Downflow Applications on Noncombustible Flooring
17–1/2
(445) Downflow applications on combustible flooring
Downflow Applications on Combustible Flooring with Coil Assembly
Upflow Applications on Combustible or Noncombustible Flooring
Downflow Applications on Noncombustible Flooring
21
(533) Downflow applications on combustible flooring
Downflow Applications on Combustible Flooring with Coil Assembly
Upflow Applications on Combustible or Noncombustible Flooring
Downflow Applications on Noncombustible Flooring
24-1/2
(622) Downflow applications on Combustible flooring
Downflow Applications on Combustible Flooring with Coil Assembly
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
Fig.
Fig. 19.
Fig. 18
Table 5 – Opening Dimensions - In. (mm)
APPLICATION
(subbase not required)
(subbase not required)
(subbase required)
or coil box (subbase not required)
(subbase not required)
(subbase not required)
(subbase required)
or coil box (subbase not required)
(subbase not required)
(subbase not required)
(subbase required)
or coil box (subbase not required)
A
PLENUM
OPENING
B D
FLOOR
OPENING
C
Fig. 24 – Installation on Combustible Flooring
24.
FIRE, EXPLOSION, AND CARBON MONOXIDE
POISONING HAZARD
Failure to follow this warning could result in personal injury, death, 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.
MINOR PROPERTY HAZARD
Failure to follow this caution may result in minor property damage.
for
Local codes may require a drain pan under entire furnace and
condensate trap when a condensing furnace is used in an attic
application or over a finished ceiling.
PLENUM OPENING
A
16
(406)
15-7/8
(403)
15-1/8
(384)
15-1/2
(394)
19-1/2
(495)
19-3/8
(492)
18-5/8
(473)
19
(483)
23
(584)
22-7/8
(581)
22-1/8
(562)
22-1/2
(572)
FURNACE
(OR COIL CASING
WHEN USED)
COMBUSTIBLE
FLOORING
DOWNFLOW
SUBBASE
SHEET METAL
PLENUM
FLOOR
OPENING
16
WARNING
!
CAUTION
!
FLOOR OPENING
B C
21-5/8 16-5/8
(549) (422)
19 16-1/2
(483) (419)
19 16-3/4
(483) (425)
19 16-1/2
(483) (419)
21-5/8 20-1/8
(549) (511)
19 20
(483) (508)
19 20-1/4
(483) (514)
19 20
(483) (508)
21-1/8 23-5/8
(537) (600)
19 23-1/2
(483) (597)
19 23-3/4
(483) (603)
19 23-1/2
(483) (597)
FURNACE
APPROVED
COIL ASSEMBLY
OR
COIL BOX
COMBUSTIBLE
FLOORING
SHEET METAL
PLENUM
FLOOR
OPENING
D
22-1/4
(565)
19-5/8
(498)
20-5/8
(600)
20
(508)
22-1/4
(565)
19-5/8
(498)
20-5/8
(600)
20
(508)
22-1/4
(565)
19-5/8
(498)
20-5/8
(600)
20
(508)
A10491