4
Some specifi c examples of service calls which
cannot be included in warranty payments are:
1. Converting the furnace to use another type
of gas.
2. Repairing duct work in the home found to
be faulty.
3. Correcting wiring problems in the electrical
circuit supplying the furnace.
4. Resetting circuit breakers, blown fuses or
other switches.
5. Correcting problems due to improper gas
supply pressure to the furnace.
6. Providing instructional training on how to
light and operate the furnace.
7. Furnace problems caused by installation of
an air conditioner, heat pump or other air
comfort devices.
8. Adding a Roof Jack extension because of
unusual wind and/or snow conditions.
9. Revising installation of the furnace fl ue as-
sembly (Roof Jack).
10. Adjusting or calibrating of thermostat.
11. Any construction debris which falls into fl ue
system.
Carefully review these responsibilities with your
manufactured housing dealer, service company
or gas supplier so there will be no misunderstand-
ing at a later time.
Electrical Supply - 120 volts, 60HZ, 1 Ph.
Fuse or Breaker - 15 amps
Temperature Rise - 45° to 75°F
High Altitude - See Table 11. For Canadian
High Altitude (2,000’ to 4,500’), reduce the
gas manifold pressure to 3.0” W.C. for
natural gas and to 8” W.C. for LP gas.
Thermostat Circuit - 24 volts, 60HZ, 30 vac
Normal Anticipator Setting - 0.4
Manifold Pressure - Natural Gas: 3.5” w.c.
LP Gas: 10” w.c.
*Blower capacity only - needs relay box for AC
Table 2. M1 Furnace Specifi cations
Furnace
Input
Output
Orifi ce No
E.S.P.
Pilot
Ignitor
Comb.
Motor
A/C Ready
Model No
MBtu/h
MBtu/h
Nat.
LP
In WC
Burner
Direct
Blower
Hp
Tons
M1GH 056
56
45
29
45
0.3
x
1/8
2*
M1GB 056
56
45
29
45
0.3
x
1/4
3
M1GC 056
56
45
29
45
0.3
x
1/2
4
M1GD 056
56
45
29
45
0.3
x
3/4
5
M1GH 070
70
57
24
42
0.3
x
1/5
2½*
M1GB 070
70
57
24
42
0.3
x
1/4
3
M1GC 070
70
57
24
42
0.3
x
1/2
4
M1GD 070
70
57
24
42
0.3
x
3/4
5
M1GH 077
77
62
21
40
0.3
x
x
1/4
3*
M1GB 077
77
62
21
40
0.3
x
x
1/4
3
M1GC 077
77
62
21
40
0.3
x
x
1/2
4
M1GD 077
77
62
21
40
0.3
x
x
3/4
5
M1GH 090
90
72
17
36
0.3
x
x
1/4
3*
M1GB 090
90
72
17
36
0.3
x
x
1/4
3
M1GC 090
90
72
17
36
0.3
x
x
1/2
4
M1GD 090
90
72
17
36
0.3
x
x
3/4
5
M1MA 056
56
46
29
45
0.3
x
x
1/8
2
M1MB 056
56
46
29
45
0.3
x
x
1/4
3
M1MC 056
56
46
29
45
0.3
x
x
1/2
4
M1MD 056
56
46
29
45
0.3
x
x
3/4
5
M1MA 070
70
57
24
42
0.3
x
x
1/5
2½
M1MB 070
70
57
24
42
0.3
x
x
1/4
3
M1MC 070
70
57
24
42
0.3
x
x
1/2
4
M1MD 070
70
57
24
42
0.3
x
x
3/4
5
M1MB 077
77
62
21
40
0.3
x
x
1/4
3
M1MC 077
77
62
21
40
0.3
x
x
1/2
4
M1MD 077
77
62
21
40
0.3
x
x
3/4
5
M1MB 090
90
72
17
36
0.3
x
x
1/4
3
M1MC 090
90
72
17
36
0.3
x
x
1/2
4
M1MD 090
90
72
17
36
0.3
x
x
3/4
5
M1BA 066
66
53
26
43
0.3
x
x
1/5
2½
M1BB 066
66
53
26
43
0.3
x
x
1/4
3
M1BC 066
66
53
26
43
0.3
x
x
1/2
4
M1BB 086
86
68
18
37
0.3
x
x
1/4
3
M1BC 086
86
68
18
37
0.3
x
x
1/2
4
M1SA 066
66
54
.50 Gph
0.3
x
Burner Model
1/5
2½
M1SB 066
66
54
.50 Gph
0.3
x
AF-10 Nozzle
1/4
3
M1SC 066
66
54
.50 Gph
0.3
x
AF-10 Nozzle
1/2
4
M1SB 086
86
71
.65 Gph
0.3
x
Spray Angle
1/4
3
M1SC 086
86
71
.65 Gph
0.3
x
80° A
1/2
4
