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Installation & Operation Manual
63
NOTE: NUMBER OF GAS VALVES VARIES BY MODEL
GROUND
X11
X4
X9
X5
X6
X7
X8
X13
N
UNIT
1
18
2
3
5
6
20
19
17
16
12
7
15
14
Y
T
W
GY
BL
Y/G
BR/W
BL
BK/R
R/BK
BL/BK
BR
BK
1
R/BK
4
8
O/R
PR
1
12
2
3
4
5
6
10
11
13
14
12
7
15
16
BL
Y
R
W/BK
O/BK
T
R
GY
O/R
T/W
R/O
R/W
BR
BR/W
1
6
2
3
4
5
BL
R
/O
R
/W
1
3
5
2
4
BK
W
G
BK/W
BK/R
CONTROLLER
L
AY
IDENTIFICATION PLUG
MODEL SPECIFIC
CONSULT
FACTORY
T= TAN
Y=YELLOW
BR=BROWN
G=GREEN
GY=GRAY
W = WHITE
BK = BLACK
PR=PURPLE
BL=BLUE
P=PINK
O=ORANGE
FACTORY
OPTIONS
Y/G = YELLOW WITH GREEN STRIPE
R= RED
8
12
13
12
W/BK
W/R
R/W
10
11
R
W
L HARNESS
GAS VALVE XFMR
FLOW
SWITCH
O
O/BK
1
2
3
4
BL
Y
1
2
4
BL
Y
O
1
2
1
2
O
O/BK
R
Y
Y
Y
R/BK
R
BL
S1
1
21
3
R Y
R
S2
3
2
1
3
R/BKYR/BK
S3
5
2
1
3
R/O Y R/O
S4
6
2
1
3
R/WY R/W
S3
4
21
3
R/O Y R/O
S1
2
21
3
R
Y R
4
1
3
5
2
6
GY
G
GY
GY/W
G
GY/W
FLOW SWITCH
LWCO
BK
W
BL
Y
LOW GAS
SWITCH
O
O/
BK
BL
Y
BK
W
LO - GAS
BL
AUXILLIARY
HI-LIMIT
C NONC
C
2
1
GROUNDHSI
G
STAGE #1 STAGE #2
STAGE #1 STAGE #3 STAGE #4
STAGE #3
GY
GY
#1
GY/W
GY/W
CHASSIS
GROUND
1
2
3
PR
5
2
4
1
6
3
LWCO
24VAC
RESET
PR
~~~~
~~~~
LWCO
PROBE
TEST
~~~~
T
T
AIR PROVE
SWTICH
BLOCK
FLUE
SWITCH
BLOWER RELAY
120VAC COIL
BK/
W
BK
BK/
W
HI/LO SPEED RELAY
120VAC COIL
W
BK/
R
BK/
W
R
BK
NO
COM
NC
COM
O/BK
HSI#2
W
BL
R
BL
HI
O
O/BK
BL
BL
BL
CIRCUIT
BREAKER
LO
MAIN UNIT HARNESS
Notes:
1. All wiring must be installed in accordance with : local, state, provincial and national code requirements per either
N.E.C. in USA or C.S.A. in Canada.
2. If any original equipment wire as supplied with the appliance must be replaced , it must be replaced with wire
having same wire gauge (AWG) and rated for a minimum of 105°C
3. Actual connector block locations may vary from those shown on diagrams . Refer to actual components for
proper connector block locations when using diagrams to trouble shoot unit .
TO PREVENT ELECTRICAL SHOCK
THIS HEATER MAY BE CONNECTED TO MORE THAN ONE BRANCH
CIRCUIT. MORE THAN ONE DISCONNECT SWITCH MAY BE
REQUIRED TO DE-ENERGIZE THE EQUIPMENT FOR SERVICING
.
DANGER
!
LBL20082 REV A
G
BURNER
BURNER
4
3
2
1
G
W
R
BK
2-SPD BLOWER
50VA
60VA
75VA
100VA
HI
LO
NEU
GND
HI-GAS
++
3
2
1
3
W
BK
1
3
1
GBK
SILENCING
SWITCH
ALARM
BELL
1
6
4
5
PR
Y
1
6
2
3
45
BL
BLY
ALARM RELAY
120VAC COIL
R
P
P
OPT. ALARM
LOW
VOLTAGE
HARNESS
CONNECTION
BOARD
LT HARNESS
LOW VOLT HARNESS
4
3
2
1
G
W
R
BK
HI
LO
NEU
GND
GROUNDING
OPTION
JUMPER
DIGITAL
HARNESS
R
BL
G
3 1
2
TO
CONNECTION
BOARD
TO
PWR
TO
XFMR
MODBUS ADAPTER
G
120V
120V
120V
120V
24V
120V
T
P
BL
R
R
BL
PR
2
W
FIELD
OPTIONS
WIRE COLOR REFERENCE
1
2
BL
O/R
O
O/BK
1
2
1
2
1
2
O
1 2
O
O/BK
O/BK
O/BK
O
1
2
O
1
2
O/BK
1
2
G
O
GY
3
1
2
9 Connection diagram (continued)