Fig. 18—Schematic Wiring Diagram A99306
W
BK
120
VAC
CONTROL
TRANSFORMER
24 VAC
120 VAC
1
HOT SURFACE
IGNITER
W
BK
TRANSFORMER
PRIMARY
IGNITER
R
R
P6
P7
120VAC
BLOWER
P5
DRAFT INDUCER
CIRCULATOR
P4
CASTING TEMPERATURE SAFETY SWITCH (MANUAL RESET)
CONTROL
P2
24 VAC
TRANSFORMER
1013-10 INTEGRATED BOILER CONTROL
P3
60 HZ, 1
BLOWER TEMPERATURE SAFETY SWITCH
AT140B1297
G
GAS VALVE
P9
SECONDARY
R
R
R
G
DIAGNOSTIC INDICATOR LIGHTS
R
POWER
PURGE
IGNITOR
VALVE
FLAME
CIRCULATOR
PUMP
P1
1
2
3
1
2
12
3
M
V
3
M
V
2
1
2
3
4
2
1
1
2
3
4
24V THERMOSTAT
AQUA STAT
CONTROL
3
2
1
4
7
5
8
69
HI LIMIT
WR
2
1
2
1
PRESSURE SWITCH
DIFFERENTIAL AIR
1
3
54
YY
Y
Y
HOT
NEUTRAL
GROUND
Y
Y
V
V
BR
BR
PUR
BK
BK
W
W
PUR
P10
DRAFT INDUCER
PUR
PUR
P12
IGNITER
(N.O.)
ON/OFF SWITCH
* RECEPTACLE
1 POWER SUPPLY. PROVIDE DISCONNECT MEANS AND
OVERLOAD PROTECTION AS REQUIRED
NOTE: "P" LABEL REFERENCE LOCATION OF CONNECTOR PLUG
BETWEEN SCHEMATIC AND LADDER DIAGRAM.
AND THE UNIT
USE ONLY COPPER WIRE BETWEEN THE DISCONNECT
PUR = PURPLE
BR = BROWN
V = VIOLET
R = RED
G = GREEN
Y = YELLOW
BK = BLACK
W = WHITE
COLOR DESIGNATION
ALL CONDUCTORS ARE 18 AWG, AWM STYLE 1015, CSA TYPE
TEW, 105°C WITH .105" PVC INSULATION
24 VOLT WIRING
24 VOLT FIELD WIRING
120 VOLT WIRING
120 VOLT FIELD WIRING
* CAUTION RECEPTACLE IS LIVE WHEN BOILER SWITCH IS OFF
—21—
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