12
Dual Fuel Supplemental Manual
-T
1
3
2
1 2
4 5
3
2 3
1
1 2
4 5
3
M
1
2
3
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. Exceptions: Replacement high vo ltage spark lead and ribbon cables must be purchased from the factory. Use of a non-approved spark lead
or ribbon cables can lead to operational problems which could result in non-repairable damage to the integrated controller or other components.
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 troubleshoot unit.
100267551 REV A
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
CN1-12
CN1-5
CN1-10
CN1-11
CN1-6
CN1-9
CN1-8
CN1-7
CN1-1
CN1-2
CN1-3
CN1-4
17
CN3-6
CN6-2
CN3-7
CN3-14
CN6-1
CN3-13
CN3-12
CN3-11
CN3-10
CN3-9
CN3-8
CN6-3
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
CN3-1
CN3-2
CN3-5
CN3-3
X3-2
X3-4
X6-1
X6-11
X3-1
X6-2
X6-14
X6-10
X6-13
X6-4
X3-3
X7-8
X7-7
X8-14
X8-13
X8-12
X8-11
X8-15
X8-5
X8-6
X8-16
X8-7
X8-17
X8-18
X8-1
ALARM
CONTACTS
RUN-TIME
CONTACTS
TANK
THERMOSTAT
LOUVER
PROVING
24 VAC LOUVER
RELAY COIL
AUX
SWITCH 1
AUX
SWITCH 2
SHIELD
SHIELD
A
B
MODBUS
OPTION
+
-
-
+
RATE
OUT
BOILER
PUMP OUT
SYSTEM RETURN
SENSOR
SYSTEM SUPPLY
SENSOR
0-10V
0-10V
TANK
SENSOR
OUTDOOR
SENSOR
+
+
-
-
0-10V
0-10V
BMS
IN
SYSTEM
PUMP IN
SHIELD
SHIELD
A
B
CASCADE
R
R
R
O
R
O
L
B
K
B
R
B
R
Y
R
O
HIGH LIMIT
SWITCH
R
R
X6-1
X6-2
X6-3
Y
G
R
R
P
BAS
L
B
R
L
B
R
R
B
W
R
O
W
/
R
O
P
W
L
B
K
B
J3-5
J3-4
J3-6
LWCO
BOARD
J3-3
J3-2
J2-1
J2-2
X6-3
R
O
K
B
/
R
O
K
B
/
R
O
TEST
SWITCH
LWCO
PROBE
R
O
R
O
LWCO RESET
X6-5
X6-15
BLOWER PROVING SWITCH (LARGE)
R
O
X6-12
BLOWER PROVING SWITCH (SMALL)
T
X13-1
BLOCKED FLUE SWITCH
R
P
X6-6
BLOCKED DRAIN SWITCH
K
B
ENABLE
X8-3
X8-8
X8-2
X8-4
X8-9
X7-1
X7-5
X7-2
X7-6
INLET SENSOR
OUTLET SENSOR (S9)
OUTLET SENSOR (S1)
FLUE SENSOR
FLUE SENSOR (S10)
PRE-MIX SENSOR 1 (S11)
PRE-MIX SENSOR 1 (S13)
PRE-MIX SENSOR 2 (S12)
PRE-MIX SENSOR 2 (S14)
R
W
X4-1
X4-2
X4-3
X8-20
X8-10
X5-8
X5-7
X5-3
X5-9
X5-2
X5-4
X5-10
X5-5
X5-41
X5-6
X5-12
X5-1
"X5"
BLOCK WIRING
IS MODEL
DEPENDENT
K
B
T
L
B
W
/
R
R
W
Y
G
Y
G
R
B
T
X10-1
X1-3
X10-4
X1-1
X1-12
X1-2
X1-4
X10-2
X10-5
X10-3
X10-6
X1-6
L
N
GND
120V
SUPPLY
ON/OFF
SWITCH
GND
SMALL
PROPANE
VALVE
LARGE
PROPANE
VALVE
K
B
W
R
P
T
R
O
L
B
R
L
B
X6-18
X6-8
X1-8
G
X6-9
X6-17
SMALL
BLOWER
RELAY
LARGE
BLOWER
RELAY
X2-4
X13-2
X13-3
BLOWER
(SMALL)
BLOWER
(LARGE)
R
K
B
Y
G
W
T
T
K
B
/
W
T
K
B
W
/
K
B
W
/
G
R/W
BK/W
X2-3
X1-7
X1-10
X1-5
FLAME SENSE 2
FLAME SENSE 1
SPARK
GENERATOR
SPARK ROD
X2-5
FLUE DAMPER
TRANSFORMER
X13-4
FLUE DAMPER
24V
TRANSFORMER
L
B
R
R
R
P
K
B
L
B
Y
R
O
BL
Y
BK
X1-2
X1-3
X1-1
INTEGRATED CONTROL
LARGE CONNECTION BOARD
SMALL CONNECTION BOARD
JUNCTION
BOX
X11
X4
USB
INTERFACE
BOILER PUMP
CONTACTOR
SYSTEM PUMP
CONTACTOR
DHW PUMP
CONTACTOR
K
B
HIGH VOLTAGE
LOW VOLTAGE
120 VAC
1.5A EACH MAX
R
O
OR
BR
OR
GPS3
GPS2
CAM
SWITCH
PROPANE LGPS
NATURAL LGPS
CAM SWITCH
SMALL
NATURAL
VALVE
LARGE
NATURAL
VALVE
OR/BK
OR/W
CAM
SWITCH
CAM
SWITCH
R/BK
R/W
CAM
SWITCH
PROPANE LIGHT
NATURAL LIGHT
CN3-4
K
B
/
Y
E
GND
LG CON BRD
WIFI
DONGLE
SW1
J2
8
43
J9
J17
J23
J12
J11
J8
USB CABLE
OPTIONAL USB/WIFI
EXTENSION CABLE
J10
R
J6
J7
COMMUNICATION
CONTROL BOARD
OPTIONAL
ETHERNET CABLE
PR
GY
24V
CN6-3
CN6-1
CN6-2
BAS
DISCONNECT POWER
BEFORE SERVICING
!
BOX DEPICTS
DUAL SENSOR
SINGLE HOUSING
BOX DEPICTS
OPTIONAL ITEMS
WARNING
LCD
DISPLAY
Y
L
B
-T
-T
-T
-T
-T
-T
-T
-T
3
Diagrams
Figure 3-1 Wiring Diagram_2.5 - 3.5 Models
