Bryant 108-451 - Manual (Page 9)

CONTROL BOX'S'
BLUE
BROWN
YELLOW
HIGH
PRESS.
CUTOUT
m
BLACK
BROWN
X Y G R
1 • 1» ( » 1 f
\
HIGH TEMP.
CUTOUT
o
YELLOW
0
BLACK
/
GAS
VALVE --------------------y-----------------
TO CONTROL BOX NO. A
BLUE
GAS PRESSURE
SWITCH
REIGNITION
PILOT SWITCH
FACTORY LINE VOLTAGE
FACTORY LOW VOLTAGE '
SCHEMATIC WIRING DIAGRAM
X OF 108-451
1. PRESSURE SWITCHES
2. PILOT
3. GLOW COIL
4. GAS PRESS. SW.
5. RESISTOR
6. GAS VALVE
7. POWER RELAY COIL
8. TRANSFORMER
10 .
11 .
12 .
13.
14.
15.
16.
17.
THERMOSTAT
HI-TEMP RELAY
HI-TEMP CUTOUT
FAN MOTOR
PUMP MOTOR
TIMER MOTOR
TIMER SWITCH
POWER RELAY
9. THERMOSTAT OVERRIDE SW. 18. PART LOAD CONTROL
597saci
o 00 Figure 4 - Unit Wiring Natural Gas - Control Box B
With Re ignition