2
FURNACE SPECIFICATIONS
BTUH
INPUT
FURNACE
WIDTH
A
BLOWER
WHEEL
SIZE
TEMP.
RISE
°
F
CFM
HIGH @
0.5” W.C.
MAX
OUTLET
TEMP.
°
F
MOTOR
HP
VENT
DIA.
DOWNFLOW
SUB-BASE
50,000
17-1/2
10 x 8
30-60
1200
160
1/3
3”
2802-5521
75,000
17-1/2
10 x 8
35-65
1200
165
1/3
4”
2802-5521
75,000
21
10 x 10
30-60
1600
160
1/2
4”
2804-5521
100,000
21
10 x 10
40-70
1600
170
1/2
4”
2804-5521
100,000
24-1/2
(2) 10 x 6
35-65
2000
165
3/4
4”
2805-5521
125,000
24-1/2
(2) 10 x 6
40-70
2000
170
3/4
5”
2805-5521
* All models are supplied with 3” vent connections. An installer supplied transition to 4” or 5” diameter must be
used where necessary.
A
B
C
D
E
F
G
H
J
17-1/2
21
24-1/2
16-1/2
20
23-1/2
20-3/8
20-3/8
20-3/8
20
20
20
16
19-1/2
23
14-1/2
18
21-1/2
18-5/8
18-5/8
18-5/8
15-1/8
18-5/8
22-1/8
19
19
19
FIGURE 1 – FURNACE DIMENSIONS AND SPECIFICATION
