Quadra-Fire CB1200MI-MBK Owner's Manual Installation And Operation page 41

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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 fi rebox. 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 back side of the feed drop
tube. 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 overfi re 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 right side of the auger tube
Thermocouple
Yellow
Purple
Red
Orange
White
Blue
Black
Black
Yellow
Red
Purple
Gray
Blue
High Temp
High Temp
Igniter
Figure 41.1
November 22, 2011
Heat
Output Thermostat
Switch Block
Snap
Disc #2
Call Light Reset
Button
just below feed motor and has a reset button. To access
it remove the right side panel. If the fi re 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 fi rebox. 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 fi rebox door is open.
21. Wiring Harness
See Figure 41.1 below
Vacuum
Switch
Snap
Disc #1
7014-188C
CB1200-I Pellet Insert
Hopper
Feed
Capacitor
Motor
Switch
Blower
Speed
Convection
Blower
Exhaust
Blower
Fuse
Snap
Disc #3
Page 41