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MODEL F80A
DIMENSIONS (Inche
MODEL WIDTH DEPTH HEIGHT SUPPLY
A
35-2 14-1/2 29 35 13-1/2 x 19
50-3 14-1/2 29 35 13-1/2 x 19
70-3 16 29 35 15 x 19
70-4 17-1/2 29 35 16-1/2 x 19
85-3 17-1/2 29 35 16-1/2 x 19
85-4
4100- 20-1/2 29 35 19-1/2 x 19
100-5 20-1/2 29 35 19-1/2 x 19
115-5 22 29 35 21 x 19
MODEL RETURN
S
35-2 14 x 22 13-1/2 x 22 1/2 3
1
50-3 14 x 22 13-1/2 x 22 1/2 3
1
70-3 14 x 22 14-1/2 x 22 3/4 4
70-4 14 x 22
2
85-3 14 x 22 14-1/2 x 22 1-1/2 4
85-4
4100- 14 x 22 16 x 22 2-1/4 4
100-5 14 x 22
2
115-5 14 x 22
2
1
Vent outlet 4” -
2
Two return air openings required
G
A
H
C
G
B
F
E
D
J
L
L
K
DIMENSIONS (Inches)
MODEL WIDTH DEPTH HEIGHT SUPPLY
ABCFx G
35-2
14-1/2 29 35 13-1/2 x 19
50-
3
70-3 16 29 35 15 x 19
70-4
17-1/2 29 35 16-1/2 x 19
85-3
85-4
4
20-1/2 29 35 19-1/2 x 19
100-
3100-
100-5 20-1/2 29 35 19-1/2 x 19
115-5 22 29 35 21 x 19
135-5 22 29 35 21 x 19
135-5
MODEL RETURN
SIDE BOTTOM
VENT
D x E J x K L H
35-2
14 x 22 13-1/2 x 22 1/2 3
1
50-3
70-3 14 x 22 14-1/2 x 22 3/4 4
70-4 14 x 22
2
14-1/2 x 22 1-1/2 4
85-3 14 x 22 14-1/2 x 22 1-1/2 4
85-4
4
14 x 22 16 x 22 2-1/4 4
100-
3100-
100-5 14 x 22
2
16 x 22 2-1/4 4
115-5 14 x 22
2
19 x 22 1-1/2 5
1
14 x 22
2
19 x 22 1-1/2 5
1
1
Vent outlet 4” - Use reducer fittings.
2
Two return air openings required
F
IGURE 2: DIMENSIONS
TABLE 3: DIMENSIONS
C
LEARANCES
Table 2 (below) provides the certified clearances to
c
ombustibles.
I
MPORTANT:
T
his furnace requires a minimum of 24-inches of front
clearance for service purposes. For this purpose, service
clearance takes precedence over clearance to combustibles.
DANGER
COMBUSTIBLE MATERIAL MUST NOT BE PLACED ON OR
AGAINST THE FURNACE JACKET.
THE AREA AROUND THE FURNACE MUST BE KEPT CLEAR
AND FREE OF ALL COMBUSTIBLE MATERIALS INCLUDING
GASOLINE AND OTHER FLAMMABLE VAPORS AND
LIQUIDS.
PLACEMENT OF COMBUSTIBLE MATERIALS ON, AGAINST
OR AROUND THE FURNACE JACKET CAN CAUSE AN
EXPLOSION OR FIRE RESULTING IN PROPERTY DAMAGE,
PERSONAL INJUR
Y OR LOSS OF LIFE.
THE HOMEOWNER SHOULD BE CAUTIONED THA
T THE
FURNACE AREA MUST NOT BE USED AS A BROOM
CLOSET OR FOR ANY OTHER STORAGE PURPOSE.
UPFLOW FURNACES ARE DESIGN CERTIFIED FOR
INSTALLATION ON COMBUSTIBLE FLOORS. THIS SHALL
BE INTERPRETED AS A WOOD FLOOR ONLY
.
THE FURNACE MUST NOT BE INSTALLED DIRECTLY ON
CARPETING, VINYL TILE, OR OTHER COMBUSTIBLE
MATERIAL EXCEPT WOOD. INSTALLATION ON
COMBUSTIBLE MATERIAL CAN RESULT IN FIRE, CAUSING
PROPER
TY DAMAGE, PERSONAL INJUR
Y OR DEA
TH.
UPFLOW
COUNTERFLOW
HORIZONTAL
1" 0" 2"
1" 1" 2.5"
.5" .5" .5"
3.5"* 3.5"* 3.5"*
0" 0" 0"
0" 0" 1"**
0"*** 0"**** 0"
6" 6" 6"
1" 1" 1"
CLOSET
CABINET
CLOSET
CABINET
CLOSET
CABINET
UNIT TOP
PLENUM
TOP/BOTTOM
PLENUM SIDES
UNIT FRONT
UNIT BACK
UNIT SIDES
ENCLOSURE
UNIT BASE
FLUE
PIPE
C VENT
B VENT
TABLE 2: CLEARANCES TO COMBUSTIBLES
* 24 inches required for service
** Supply air end 1 inch / return air end 0 inches
*** Certified for closet installation on combustible flooring
**** Certified for installation on combustible flooring
only when installed on special base (part # 30476).
See the appliance rating plate affixed to the furnace
for specific model number, serial number and
clearance to combustibles information.