12
Dual Fuel Supplemental Manual
3
Diagrams
Figure 3-1 Ladder Diagram
PRE-MIX SENSOR 1 (S13)
PRE-MIX SENSOR 1 (S11)
FLUE SENSOR (S10)
OUTLET SENSOR (S1)
-T
-T
-T
-T
-T
-T
FLUE SENSOR
OUTLET SENSOR (S9)
1.5A EACH MAX
WARNING
OPTIONAL USB/WIFI
J3-3
JUNCTION BOX
TERMINAL STRIP
120V SUPPLY "L"
TERMINAL STRIP
120V SUPPLY "N"
120VAC
NEUTRAL
INTEGRATED CONTROL
ON/OFF
SWITCH
F2
3.15 A
F4
5.0 A
SYSTEM PUMP
RELAY
BOILER PUMP
RELAY
DHW PUMP
RELAY
X1-1
X1-2
X1-4
X1-8
SMALL GAS
VALVE RELAY
LARGE GAS
VALVE RELAY
X1-6
2
-
0
1
X
1
-
0
1
X
X10-3
SMALL GAS
VALVE RELAY
LARGE GAS
VALVE RELAY
X10-6
X10-5
X10-4
TERMINAL STRIP
SYSTEM PUMP
CONTACTOR
BOLIER PUMP
CONTACTOR
DHW PUMP
CONTACTOR
BLOWER
RELAY
BLOWER
X6-10
X13-4
X6-1
X2-5
2
1
3
BAS
X1-1
X1-2
X1-3
FLUE DAMPER
TRANSFORMER
1
2
3
24V
TRANSFORMER
FLUE DAMPER
X6-3
X1-12
!
RIBBON CABLE
BOARD
TEST
SWITCH
LWCO
PROBE
LWCO RESET
J2-2
J3-5
X6-5
X6-15
X6-12
X13-1
X6-6
X3-3
X3-4
X3-1
X3-2
X6-11
X6-2
X1-3
LWCO
CONTROL
BLOCKED FLUE
SWITCH
BLOCKED DRAIN
SWITCH
ALARM
CONTACTS
RUN-TIME
CONTACTS
TANK
THERMOSTAT
LOUVER
PROVING
AUX
SWITCH 1
AUX
SWITCH 2
ENABLE
W
CN1-12
J3-6
CN1-10
CN1-11
CN1-9
X6-4
CN1-8
CN1-7
CN1-1
CN1-3
X1-3
X1-7
X1-10
X2-3
FLAME
SENSE 2
FLAME
SENSE 1
SPARK
GENERATOR
SPARK
ROD
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
LARGE
CONNECTION BOARD
CN6-1
CN3-6
CN3-7
CN3-14
CN3-13
CN3-11
CN3-9
CN3-8
CN3-1
CN3-2
CN3-3
CN3-4
CN6-2
CN6-3
CN3-10
X6-14
INTEGRATED
BOARD
X4-1
X4-2
X4-3
X6-3
X6-1
X6-2
X8-20
X8-10
X7-8
X8-13
X8-14
X8-12
INTEGRATED
CONTROL
CN3-4
X8-15
X7-7
X8-11
X8-6
X8-16
X8-7
X8-17
X8-1
X8-3
X8-8
X8-2
X8-4
X8-9
X7-1
X7-5
GROUND
X11
LCD
DISPLAY
X4
X5-1
X5-7
X5-2
X5-8
X5-3
X5-9
X5-4
X5-10
X5-5
X5-41
X5-6
CN3-12
BAS
X5-12
J3-2
BOX DEPICTS
SINGLE HOUSING
HIGH VOLTAGE
LOW VOLTAGE
BOX DEPICTS
OPTIONAL ITEMS
X6-8
INLET SENSOR
-T
X6-9
4
BLOWER
120 VAC
locations when using diagrams to troubleshoot unit.
USB
INTERFACE
"X5"
BLOCK WIRING
IS MODEL
DEPENDENT
X8-1
X8-5
100266316 REV A
24 VAC LOUVER
RELAY COIL
X6-13
CN1-2
R
BLOWER
RELAY
CN1-5
CN1-4
HIGH LIMIT
SWITCH
SMALL
CONNECTION BOARD
CN-1
CN1-6
CN-2
CN-3
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
CAM
SWITCH
PROPANE LGPS
NATURAL LGPS
AIR VALVE
PRESS. SWITCH
CAM
SWITCH
PROPANE LIGHT
NATURAL LIGHT
CAM
SWITCH
PROPANE
NATURAL
PROPANE
NATURAL
M
J23
3. Actual connector block locations may vary from those show n on diagrams. Refer to actual components for proper connector blo ck
E
J3-4
DUAL SENSOR
ETHERNET CABLE
USB CABLE
8
43
J17
J8
EXTENSION CABLE
OPTIONAL
GND
J12
J7
J6
J11
J10
J2
24V
BAS
J9
CN-4
DONGLE
AIR VALVE
M
CN6-1
CN6-3
CN6-2
LG CON BRD
X6-18
1
2
5
X6-17
Notes
1. All wiring must be installed in accordance with: local, st ate, 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 mu st be replaced, it must be replaced with wire having same wi re gauge
(AWG) and rated for a minimum of 105°C. Exceptions: Replacement high voltage 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.
WIFI
J2-1
DISCONNECT POWER
BEFORE SERVICING
