29
04/21
7019-802H
17. Snap Disc #1 (Convection Blower) 110°F
Snap disc #1 is located on the right side of the firebox.
There are 2 purple wires connected to it. This snap
disc turns the convection blower on and off as needed.
Power is always present at snap disc #1.
18. Snap Disc #2 (Fuel Delivery Interrupt) 250°F
Snap disc #2 is located on the back side of the feed
drop tube. (
See Figure 31.2 on page 31
). There is 1
orange wire and 1 black wire connected to it. This snap
disc will turn off the feed system, which will turn off the
appliance if an over fire condition should occur or if the
convection blower should fail to operate. If this occurs
the snap disc with automatically reset itself.
19. Snap Disc #3 (Burn Back Protector) 250°F
Snap disc #3 is mounted on the back of the auger tube
in the center of the appliance and has a reset button.
To access it remove the right side panel. If the fire tries
to burn back into the feed system or push exhaust up
the feed tube, this snap disc will shut the entire system
off. This disc must be manually reset.
20. Vacuum Switch
The vacuum switch is located on the lower left side
of the appliance behind left access panel. This switch
turns the feed system on when vacuum is present
in the firebox. The vacuum switch is a safety device
to shut off the feed motor if the exhaust or the heat
exchanger system is dirty or plugged or if the firebox
door is open.
21. Wiring Harness
See
Figure 29.1
below
VACUUM
SWITCH
SNAP
DISC #2
CAPACITOR
FEED
MOTOR
SNAP
DISC #1
CONVECTION
BLOWER
COMBUSTION
BLOWER
SNAP
DISC #3
FUSE
RESET
BUTTON
CALL
LIGHT
THERMOS TAT
BLOCK
HEAT OUTPUT
SWITCH
THERMOCOUPLE
IGNITOR
YELLOW
YELLOW
RED
RED
ORANGE
WHITE
BLUE
BLUE
PURPLE
GRAY
BLACK
BLACK
BLACK
BLACK
HOPPER
SWITCH
Figure 29.1
