15
not exceed the rated input shown on the rating
plate. Overfiring of the fur nace can result in
premature heat exchanger failure. Gas pressures
in excess of 13 inch es water column can also cause
permanent damage to the gas valve.
At all altitudes, the manifold pressure must be within 0.3
inches w.c. of that listed in the Specification Sheet applicable
to your model for the fuel used. At all altitudes and with either
fuel, the air tempera ture rise must be within the range listed
on the furnace nameplate. Should this appliance be convert-
ed to LP, refer to the instructions included in the factory au-
thorized LP conversion kit.
High Altitude Derate
IMPORTANT NOTE: The furnace, as shipped, re
-
quires no change to run between 0 - 5500 feet. Do
not attempt to increase the fir ing rate by changing
orifices or increasing the manifold pressure be
-
low 5500 feet. This can cause poor combustion and
equipment failure.
High altitude installations above 5500 feet may require both
a pressure switch and an orifice change. These changes are
necessary to compensate for the natural reduction in the
density of both the gas fuel and the combustion air at higher
altitude.
For installations above 5500 feet, please refer to your dis-
tributor for required kit(s).
All conversions must be performed by a qualified installer, or
service agency.
Propane Gas Conversion
WARNING
Possible property damage, personal injury or death may
occur if the correct conversion kits are not installed. The
appropriate kits must be applied to ensure safe and proper
furnace operation. All conversions must be performed by a
qualified installer or service agency.
This unit is configured for natural gas but may be converted
for use with L.P. gas by installing the specified L.P. conver
-
sion Kit.
If converting to LP gas, it is recommended that an LPLP0* kit
also be installed. The use of this kit will prevent the furnace
from firing when the LP gas supply pressure is too low to
support proper combustion.
OF
F
O
N
W
R
G
C
+
1
2
3
4
1
2
3
4
LOW
ER
SLOT
SI
DE
+
+
R
1
R12
4
R12
7
R12
8
R12
9
R13
5
R3
3
R1
R34 R63
4
R7
9
R8
8
R9
7
R10
4
R10
5
R19
8
R20
1
R7
0
R7
2
R55
R65
R4
0
R30
R7
R64
R
3
1
O
R4
N
1
R
5
1
R6
0
R1
84
R
18
2
R5
3
R
45
R6
1
R5
R5
4
R183
OFF
R1 85
R56
R44
R4
7
R18
7
R18
6
R 42
R16
6
R21
2
R9
2
R14
5
R8
9
R9
3
R18
1
R7
6
R7
5
R8
0
R179
R178
R4
9
R4
3
R18
0
R2
2
R5
2
R1
5
R
1
3
R2
8
R1
46
R155
R2
1
R1
2
R1
3
1
R2
3
R1
9
R
4
R
3
R2
0
R1
1
R1
8
R
1
0
R12
0
R14
7
R152
R169
R 1 3 0
R11
0
R113
R121 R115 R126
R125 R123
R11
2
R11
1
R15
1
R13
7
R13
6
R14
4
R
8
R1 93
R150
R168 R170 R149
R148
R4
6
R21
7
E3
7
1
E2
2
E2
8
K
2
K1
0
K
8
K
6
K
7
1
U
1
DS
1
O FF
O N
SW
1
O FF
O N
SW
2
1
2
4
SW
3
CR2
9
CR3
0
CR1
7
2
0
CR1
CR1
3
CR
7
CR
3
CR3
5
CR1
8
CR2
6
CR3
4
CR
2
1
Q1
0
Q1
4
Q
6
CR
1
CR
6
CR1
6
CR2
0
CR2
2
R134 R216
CR28
R133
CR
3
1
R2
CR
23
1
Q
5
Q
3
Q
2
CR19
Q16
Q
9
Q
7
R117 R118 R119
Q8
CR2
4
Q1
1
R16
1
CR32
R162
R160 R163
K9
R157
R16
7
R101
R210
R10
2
R1 03
R8
6
R
85
R32
R 69
R 39
R2
7
CR
4
R19
9
R 91
R8
1
R
6
R15
9
R20
0
R10
9
R20
9
R100
R
96
R14
3
R20
7
R213
R215
CR1R1
96 1
C
R
1
0
R57
R7
R35 1
R48
R9
4
R6
2
R2
9
R98
R173
R12
2
R139
CR27
CR4
R19
5
R82 R1
7
C1
9
C21
R158
C2
3
C1
4
C3
7
C3
8
R50
C3
6
R164
R172
C31
CR9
3
C
3
C2
7
C
18
C33
R132
C2
0
C
1
6
C2
4
C
1
7
C4
4
C1
5
C1
3
C1
1
C1
0
C22
CR25
Q12
R9
C4
C
1
C
2
Q4 R177
R176 C28
CR
33
R95 R171
Q13
R1
38
Q
1
C3
5
C3
4
C3
2
C4
3
C42
K4
C41
K3
K1
C40
C3
0
R11
6 R10
C1
7
2
CR5
D H U M
CR2
Y1
Y/ Y2
R59 R16 R87 R78 CR8
CR 39
FLAME
CURRENT
1VDC=1UA
CR38
R25
R24
R2
6
R37
R36
R3
8
R6
6
R6
7
R6
8
R8
3
R9
0
R9
9
R10
8
R154
R156
R19
7
R14
2
R14
1
R20
2
R20
3
R20
4
R20
5
R20
6
R21
1
R10
6
6
CR14
1
E2
4
W
1
W
2
TP
5
TP
6
TVS1
R58
F
1
C2
6
E3
2
E2
5
E
2
E
1
E
3
E2
9
RV
2
U
5
U
4
U
3
U
2
CR3
6
CR3
7
Q1
8
Q1
9
C2
5
R15
3
R1
40 R11
C4
R
4
E4
2
59-
5240
REV.0
03
RV1
E1
5
TP
4
TP
3
TP
2
TP
1
E2
6
1
E18
CR15
R175
E3
8
E4
0
1
E3
0
TVS
2
OF
F
O
N
W
R
G
C
+
1
2
3
4
1
2
3
4
LOW
ER
SLOT
SI
DE
+
+
R
1
R12
4
R12
7
R12
8
R12
9
R13
5
R3
3
R1
R34 R63
4
R7
9
R8
8
R9
7
R10
4
R10
5
R19
8
R20
1
R7
0
R7
2
R55
R65
R4
0
R30
R7
R64
R
3
1
O
R4
N
1
R
5
1
R6
0
R1
84
R
18
2
R5
3
R
45
R6
1
R5
R5
4
R183
OFF
R1 85
R56
R44
R4
7
R18
7
R18
6
R 42
R16
6
R21
2
R9
2
R14
5
R8
9
R9
3
R18
1
R7
6
R7
5
R8
0
R179
R178
R4
9
R4
3
R18
0
R2
2
R5
2
R1
5
R
1
3
R2
8
R1
46
R155
R2
1
R1
2
R1
3
1
R2
3
R1
9
R
4
R
3
R2
0
R1
1
R1
8
R
1
0
R12
0
R14
7
R152
R169
R 1 3 0
R11
0
R113
R121 R115 R126
R125 R123
R11
2
R11
1
R15
1
R13
7
R13
6
R14
4
R
8
R1 93
R150
R168 R170 R149
R148
R4
6
R21
7
E3
7
1
E2
2
E2
8
K
2
K1
0
K
8
K
6
K
7
1
U
1
DS
1
O FF
O N
SW
1
O FF
O N
SW
2
1
2
4
SW
3
CR2
9
CR3
0
CR1
7
2
0
CR1
CR1
3
CR
7
CR
3
CR3
5
CR1
8
CR2
6
CR3
4
CR
2
1
Q1
0
Q1
4
Q
6
CR
1
CR
6
CR1
6
CR2
0
CR2
2
R134 R216
CR28
R133
CR
3
1
R2
CR
23
1
Q
5
Q
3
Q
2
CR19
Q16
Q
9
Q
7
R117 R118 R119
Q8
CR2
4
Q1
1
R16
1
CR32
R162
R160 R163
K9
R157
R16
7
R101
R210
R10
2
R1 03
R8
6
R
85
R32
R 69
R 39
R2
7
CR
4
R19
9
R 91
R8
1
R
6
R15
9
R20
0
R10
9
R20
9
R100
R
96
R14
3
R20
7
R213
R215
CR1R1
96 1
C
R
1
0
R57
R7
R35 1
R48
R9
4
R6
2
R2
9
R98
R173
R12
2
R139
CR27
CR4
R19
5
R82 R1
7
C1
9
C21
R158
C2
3
C1
4
C3
7
C3
8
R50
C3
6
R164
R172
C31
CR9
3
C
3
C2
7
C
18
C33
R132
C2
0
C
1
6
C2
4
C
1
7
C4
4
C1
5
C1
3
C1
1
C1
0
C22
CR25
Q12
R9
C4
C
1
C
2
Q4 R177
R176 C28
CR
33
R95 R171
Q13
R1
38
Q
1
C3
5
C3
4
C3
2
C4
3
C42
K4
C41
K3
K1
C40
C3
0
R11
6 R10
C1
7
2
CR5
D H U M
CR2
Y1
Y/ Y2
R59 R16 R87 R78 CR8
CR 39
FLAME
CURRENT
1VDC=1UA
CR38
R25
R24
R2
6
R37
R36
R3
8
R6
6
R6
7
R6
8
R8
3
R9
0
R9
9
R10
8
R154
R156
R19
7
R14
2
R14
1
R20
2
R20
3
R20
4
R20
5
R20
6
R21
1
R10
6
6
CR14
1
E2
4
W
1
W
2
TP
5
TP
6
TVS1
R58
F
1
C2
6
E3
2
E2
5
E
2
E
1
E
3
E2
9
RV
2
U
5
U
4
U
3
U
2
CR3
6
CR3
7
Q1
8
Q1
9
C2
5
R15
3
R1
40 R11
C4
R
4
E4
2
59-
5240
REV.0
03
RV1
E1
5
TP
4
TP
3
TP
2
TP
1
E2
6
1
E18
CR15
R175
E3
8
E4
0
1
E3
0
TVS
2
ROOM
THERMOSTAT
Y W R G C
CONDENSOR
CONTACTOR COILS
ISOLATING RELAY
(SEE NOTES)
TWINNING CONNECTION DIAGRAM
NOTES:
1. ISOLATING RELAY MAY BE ELIMINATED IF LINE VOLTAGE
SUPPLY TO FURNACES IS THE SAME PHASE .
TO VERIFY PHASING:
A) VERIFY SOURCE IS EXACTLY THE SAME EITHER L1, L2,
OR L3 FROM THE SAME TRANSFORMER OR
B) CHECK WITH SCOPE OR PHASE METER
C) IF IN DOUBT USE RELAY
2. IF ISOLATING RELAY IS NOT USED, CONNECT FURNACE “W” TERMINALS TOGETHER.
