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BRADFORD WHITE
Page 20
Copper Brute B4 Volume Water Heaters
Page 21
IGNITION SYSTEM NO. 12 (SIZES 325-400)
ON/OFF WITH EM2
2 AMP
FUSE
TRANSFORMER
LOW WATER
CUT-OFF (OPTIONAL)
POWER
SWITCH
HOT
PUMP
RELA
Y
TERMINAL
STRIP
MANUAL
RESET
HI-LIMIT
TEMP
CONTROL
200°F MAX
FIELD INTERLOCK
(REMOVE JUMPER
WHEN USED)
PILOT BURNER
WITH SP
ARK
ELECTRODE
SENSOR
GAS VALV
E
SPARK
FLOW
SWITCH
115V/60HZ
POWER SUPPL
Y
PUMP
NEUTRAL
GROUNDING
CONDUCTOR
1
2
3
4
5
6
7
8
9
10
11
12
BK - BLACK
W -
WHITE
R -
RED
Y -
YELLOW
BL - BLUE
BR - BROWN
O -
ORANGE
G -
GREEN
P -
PURPLE
FACTORY WIRING
24V
115V
FIELD WIRING
24V
115V
R
R
24V
115V
BK
BR
W
Y
Y
W
R
R
R
BR
O
Y
BK
BL
W
R
R
BR
BR
BR
Y
O
BR
BR
BK
W
BK
BK
W
G
Y
BR
O
Y
Y
P
1 2
3
4
5
A
T
B
1
3
IGNITION
CONTROL
1 M
V
2 MV/PV
3 P
V
4 GND
5 24V (GND)
6 24V
7 TH-W
8 M
V
9 S
PARK
TH-TR
TR
TH
IF ANY OF THE ORIGINAL WIRE AS SUPPLIED
WITH THE HEATER MUST BE REPLACED, IT
MUST BE REPLACED WITH APPLIANCE WIRING
MATERIAL 105°C (220°F) OR ITS EQUIVALENT.
WHITE WIRES TO FUSIBLE LINK MUST BE
REPLACED WITH WIRE HAVING INSULATION
RATED AT 200°C (390°F). (AVAILABLE FROM
FACTORY).
Figure 29. Typical example of wiring schematic, System 12, Sizes 325-400.