035-15241-003 Rev. A (201)
Unitary Products Group 3
FURNACE SPECIFICATIONS
* All models are supplied with 3” vent connections. An installer supplied transition to 4” or 5” diameter must be used where necessary.
** Upflow / Horizontal applications only.
FIGURE 1: FURNACE DIMENSIONS AND SPECIFICATIONS
BTUH
INPUT
BTUH
OUTPUT
NOMINAL
CFM
FURNACE
WIDTH
A
BLOWER
WHEEL
SIZE
TEMP.
RISE
°F
MAX
OUTLET
TEMP. °F
MOTOR
HP
VENT
DIA.
DOWNFLOW
SUB-BASE
50,000 40,000 1200 17-1/2 10 x 8 30-60 160 1/3 3” 1FB0318
75,000 60,000 1200 17-1/2 10 x 8 35-65 165 1/3 4” 1FB0318
75,000 60,000 1600 21 10 x 10 30-60 160 1/2 4” 1FB0319
100,000 80,000 1600 21 10 x 10 40-70 170 1/2 4” 1FB0319
100,000 80,000 2000 24-1/2 (2) 10 x 6 35-65 165 3/4 4” 1FB0320
125,000 100,000 2000 24-1/2 (2) 10 x 6 40-70 170 3/4 5” 1FB0320
150,000** 120,000** 2000 24-1/2 (2) 10 x 6 40-70 170 3/4 5” NA
MODELABCDEFGHJ
50/40/1200
75/60/1200
17-1/2 16-1/2 20-3/8 20 16 14-1/2 18-5/8 15-1/8 19
75/60/1600
100/80/1600
21 20 20-3/8 20 19-1/2 18 18-5/8 18-5/8 19
100/80/2000
125/100/2000
24-1/2 23-1/2 20-3/8 20 23 21-1/2 18-5/8 22-1/8 19
DOWNFLOW
UPFLOW
A
A
B
E
D
BOTTOM VIEW
F
G
29-3/4
29-3/4
C
31-1/2
31-1/2
14
BOTTOM VIEW
H
J
16-1/4