Crown Boiler BWF Series Installation Instructions Manual page 31

9. Wiring (continued)
Power
Supply
120/60/1
GND
L1
L2
DHW
Circulator
(By Others)
Boiler Limit
Temperature
Sensor
VI
VI
NO
BL
C
Pressure
Switch
BL
BL RD
BL
Auxiliary
Limit Jumper
(remove per
optional kit
instructions)
109836-01 - 04/20
Overcurrent Service
Protection/ Switch
Disconnect (optional)
(By Installer) (By Installer)
System
Circulator
Boiler Control
P7
3
2
1
P8
I
DHW
1 2
24V DHW
Thermostat
(By Others)
24V CH YE
Thermostat
YE
(By Others)
WH
RD
WH
BL
Wire Type Legend
Low Voltage Factory Wiring size 18 AWG Type TEW/AWM stranded wire, 105°C
Low Voltage Field Wiring
Line Voltage Factory Wiring size 14 AWG Type TW or TEW/AWM wire, 105°C
Line Voltage Field Wiring
Low Voltage Factory Wiring size 18 AWG Type SF-2 stranded wire, 200°C
Ignitor - NAT Gas: 16 AWG UL Style 3257, Honeywell 394803-2F, color RD (Red)
Ignitor - LP Gas: 250°C (integral to pilot)
Notes:
1. If any of the original wire supplied with the appliance must
be replaced, it must be replaced with the same type shown or its equivalent.
Figure 9.3: Wiring Connections Diagram
8.5
Internal J-Box
P5
P3
1 2 3
9 6 3
P9
8 5 2
1 2 3
7 4 1
ENVIRACOM
RD
Flame
Rollout
Switch
RD
Gas Valve
RD
WH
RD
LWCO Connections
Red from Jumper Plug
Red to Flame Rollout Switch
Ladder Diagram Other Side
Green Ground
Screw
GR
BK
WH
Ground Terminal
On Gas Valve
YE
RD
T1
P2
WH
3 6
BK
2 5
1 4
P4
1 2 3 4 5
1 2
L2 GND L1
P1
PI BR
BK
1
WH
2
BR
PI
Transformer
Pilot
Assembly
IDL 1200 LWCO
Lead PIN #
Blue 1
White 2
3
4
RD
YE
Fan
24V
WH
BK
Wire Code
BK - Black
BL - Blue
BR - Brown
GR - Green
PI - Pink
RD - Red
WH - White
YE - Yellow
VI - Violet
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