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BLOWER DATA
FILTER AIR RESISTANCE
cfm (L/s)
in. w.g. (Pa)
0 (0)
0.00 (0)
200 (95)
0.01 (0)
400 (190)
0.03 (5)
600 (285)
0.04 (10)
800 (380)
0.06 (15)
1000 (470)
0.09 (20)
1200 (565)
0.12 (30)
1400 (660)
0.15 (35)
1600 (755)
0.19 (45)
1800 (850)
0.23 (55)
2000 (945)
0.27 (65)
2200 (1040)
0.33 (80)
2400 (1130)
0.38 (95)
2600 (1225)
0.44 (110)
HIGH ALTITUDE INFORMATION
No gas pressure adjustment is needed when operating from 0 to 4500 ft. (0 to 8 m). See below for correct manifold pressures for altitudes
greater that 4500 ft. (1372 m) for natural and L.P. gas.
Manifold Absolute Pressure (outlet)
in. w.g. (kPa)
Model No.
0 to 4500 ft. (0 to 1372 m)
above sea level
4501 to 5500 ft.
(1373 to 1676 m)
above sea level
5501 to 6500 ft.
(1677 to 1981 m)
above sea level
6501 to 7500 ft.
(1982 to 2286 m)
above sea level
G32−75 natural
no adjustment
G32−100 natural
3 5 (0 88)
3 4 (0 85)
3 3 (0 82)
3 2 (0 80)
G32−125 natural
3.5 (0.88)
3.4 (0.85)
3.3 (0.82)
3.2 (0.80)
G32−75 L.P.
no adjustment
G32−100 L.P.
7.5 (0.19)
7.3 (0.185)
7.1 (0.180)
7.0 (0.177)
G32−125 L.P.
7.5 (0.19)
7.3 (0.185)
7.1 (0.180)
7.0 (0.177)
INTAKE AND EXHAUST PIPE VENTING TABLE
Vent Pipe
Maximum
Minimum Vent Pipe Diameter Required
Maximum
Equivalent Length
75,000 Btuh (22.0 kW)
100,000 Btuh (29.3 kW)
125,000 Btuh (36.6 kW)
Feet
Meters
in.
mm
in.
mm
in.
mm
15
4.6
2
51
2
51
2
51
20
6.1
2
51
2
51
3
76
25
7.6
2
51
2
51
3
76
30
9.1
2
51
3
51
3
76
40
12.2
2
51
3
51
3
76
50
15.2
2
51
3
51
3
76
55
16.8
2
51
3
76
3
76
60
18.3
3
76
3
76
3
76
70
21.3
3
76
3
76
3
76
80
24.4
3
76
3
76
3
76
90
27.4
3
76
3
76
3
76
100
30.5
3
76
3
76
3
76
110
33.5
3
76
3
76
3
76
120
36.6
3
76
3
76
3
76
130
39.6
3
76
3
76
− − − −
− − − −
MINIMUM PIPE LENGTHS FOR FURNACES
G32−75
5 feet (1.5 m) with two 90
elbows of 2 inch (51 mm) diameter pipe. (15 equivalent feet (4.6 m) total).
G32−100
5 feet (1.5 m) with two 90
elbows of 2 inch (51 mm) diameter pipe. (15 equivalent feet (4.6 m) total).
G32−125
5 feet (1.5 m) with two 90
elbows of 2 inch (51 mm) diameter pipe. (15 equivalent feet (4.6 m) total).
VENTING NOTES
One 90
elbow is equivalent to 5 feet (1.5 m) of straight vent pipe.
Two 45
elbows are equal to one 90
elbow.
One 45
elbow is equivalent to 2.5 feet (.75 m) of straight vent pipe.
One foot (305 mm) length of 2 in. (51 mm) diameter pipe is equivalent to 8 feet (2.4 m) of 3 in. (76 mm) diameter pipe.
Intake and Exhaust pipes must be the same diameter.
2 inch x 3 inch (51 mm x 76 mm) adaptor is furnished with −100 and −125 furnaces for exhaust pipe connection.
Exhaust pipe must terminate with 1−1/2 inch (38 mm) diameter pipe for furnaces using1−1/2 (38 mm) or 2 inch (51 mm) diameter pipe runs.
Exhaust pipe must terminate with 2 inch (51 mm) diameter pipe for furnaces using 3 inch (76 mm) diameter pipe runs.