FURNACE SPECIFICATIONS
11
1. These furnaces are manufactured for natural gas operation. Optional kits are available for conversion to propane operation.
2. For elevations above 2000 feet the rating should be reduced by 4% for each 1000 feet above sea level. The furnace must not be derated, orifice changes should only
be made if necessary for altitude.
3. The total heat loss from the structure as expressed in TOTAL BTU/HR must be calculated by the manufacturers method or in accordance with the "A.S.H.R.A.E.
GUIDE" or "MANUAL J-LOAD CALCULATIONS" published by the AIR CONDITIONING CONTRACTORS OF AMERICA. The total heat loss calculated should be equal
to or less than the heating capacity. Output based on D.O.E. test procedures.
4. Minimum Circuit Ampacity calculated as: (1.25 x Circulator Blower Amps) + I.D. Blower Amps.
Unit specifications are subject to change without notice.
ALWAYS
refer to the units serial plate for the most up-to-date general and electrical information.
(1)
Wire size should be determined in accordance with National Electrical Codes. Extensive wire runs will require larger wire sizes.
(2)
Maximum Overcurrent Protection Device: May use Time Delay Fuse or HACR type Circuit Breaker of the same size as noted.
(3)
Off Heating - this fan delay timing is adjustable (100 and 150 seconds). Furnaces are shipped with 150 second off delay.
(4)
See Installation Instructions for appropriate vent diameter, length and number of elbows.
(5)
See Installation Instructions for appropriate combustion air pipe diameter, length and number of elbows.
NOTE: This data is provided as a guide, it is important to electrically connect the unit and properly size fuses/circuit breakers and wires in
accordance with all national and/or local electrical codes. Use copper wire only.
GMH95
M ODEL
GM H95
0453BXA*
GMH95
0703BXA*
GMH95
0704CXA*
GMH95
0904CXA*
GM H95
0905CXA*
GM H95
0905DXA*
GMH95
1155DXA*
Btuh
Input (U S)
46,000
69,000
69,000
92,000
92,000
92,000
115,000
Output (U S)
44,400
66,400
66,900
89,000
88,400
88,400
110,500
Input (C AN )
46,000
69,000
69,000
92,000
92,000
92,000
115,000
Output (C AN )
44,400
66,400
66,900
89,000
89,400
89,400
110,500
A.F.U .E.
95.0%
95.0%
95.0%
95.0%
95.0%
95.0%
95.0%
R ated External Static (" w .c.)
.20 - .50
.20 - .50
.20 - .50
.20 - .50
.20 - .50
.20 - .50
.20 - .50
Tem perature R is e (°F)
35 - 65
30 - 60
35 - 65
30 - 60
30 - 60
35 - 65
35 - 65
ID Blow er Pres s ure Sw itch Trip Point (" w .c.)
-1.10
-0.95
-1.10
-1.20
-1.35
-1.10
-1.10
Front C over Pres s ure Sw itch Trip Point (" w .c.)
-0.37
-0.37
-0.37
-0.60
-0.10
-0.37
-0.60
Blow er Wheel (D " x W")
10 x 8
10 x 8
10 x 10
10 x 10
11 x 10
11 x 10
11 x 10
Blow er H ors epow er
1/3
1/3
1/2
1/2
3/4
3/4
3/4
Blow er Speeds
4
4
4
4
4
4
4
Max C FM @ 0.5 E.S.P.
1200
1200
1600
1600
1800
2000
2000
Pow er Supply
115-60-1
115-60-1
115-60-1
115-60-1
115-60-1
115-60-1
115-60-1
Minim um C ircuit Am pacity (MC A)
(1)
9.4
9.4
13.8
13.8
13.2
13.2
13.2
Maxim um Overcurrent D evice
(2)
15.0
15.0
15.0
15.0
15.0
15.0
15.0
Trans form er (VA)
40
40
40
40
40
40
40
Prim ary Lim it Setting (°F)
150
160
160
150
130
160
160
Auxiliary Lim it Setting (°F)
150
150
150
150
120
150
160
R ollout Lim it Setting (°F)
200
200
200
200
210
200
200
Fan D elay On H eating
30 s ecs .
30 s ecs .
30 s ecs .
30 s ecs .
30 s ecs .
30 s ecs .
30 s ecs .
Off H eating
(3)
150 s ecs .
150 s ecs .
150 s ecs .
150 s ecs .
150 s ecs .
150 s ecs .
150 s ecs .
Fan D elay On C ooling
6 s ec.
6 s ec.
6 s ec.
6 s ec.
6 s ec.
6 s ec.
6 s ec.
Off C ooling
45 s ecs .
45 s ecs .
45 s ecs .
45 s ecs .
45 s ecs .
45 s ecs .
45 s ecs .
Gas Supply Pres s ure (N atural/Propane) ("w .c.)
7 / 11
7 / 11
7 / 11
7 / 11
7 / 11
7 / 11
7 / 11
Manifold Pres s ure (N atural/Propane) ("w .c.)
3.5 / 10
3.5 / 10
3.5 / 10
3.5 / 10
3.5 / 10
3.5 / 10
3.5 / 10
Orifice Size (N atural/Propane)
43 / 55
43 / 55
43 / 55
43 / 55
43 / 55
43 / 55
43 / 55
N um ber of Burners
2
3
3
4
4
4
5
Vent C onnector D iam eter (inches )
(4)
2
2
2
2
2
2
2
C om bus tion Air C onnector D iam eter (inches )
(5)
2
2
2
2
2
2
2
Shipping Weight (lbs .)
132
135
136
158
172
172
175
