Quadra-Fire CB1200MI-MBK Owner's Manual page 23

16. Thermostat
The appliance is designed to run on a 12 volt AC thermostat.
The heat anticipator, if present, should be set on the lowest
setting available.
17. Snap Disc #1 (Convection Blower) 125°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) 200°F
Snap disc #2 is located on the left side of the appliance behind
the access door. There are 2 yellow wires connected to it. This
snap disc will interrupt the thermostat circuit, which will shut
down 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 and the appliance
will start up if the thermostat is still calling for heat. .
Thermocouple
Yellow
Purple
Red
Orange
White
Blue
Black
Black
Yellow
Red
Purple
Gray
Blue
High Temp
High Temp
Igniter
Figure 23.1
November 28, 2017
Heat
Output Thermostat
Switch Block
Snap
Disc #2
Call Light Reset
Button
19. Snap Disc #3 (Burn Back Protector) 250°F
Snap disc #3 is mounted on the right side of the auger tube
just below feed motor 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 at the rear of the appliance.
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 23.1 below
Vacuum
Switch
Snap
Disc #1
7014-286B
CB1200 Pellet Insert
Hopper Feed
Capacitor
Motor
Switch
Blower
Speed
Convection
Blower
Exhaust
Blower
Fuse
Snap
Disc #3
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