R
Mt. Vernon Pellet Stove (AE)
17.Power Supply
The power supply is located at the rear of the appliance. It converts 120 volt AC current to 15 volt DC current to power the appliance.
18.Overheat Sensor (Snap Disc)
The overheat sensor is mounted on the back of the drop 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 sensor will shut the stove down, however the wall control will still display messages. This sensor must be manually
19.Thermocouple - Firepot
This thermocouple is located on top of the firepot inside the thermocouple cover (ceramic protection tube). The thermocouple sends a millivolt signal to the control board telling the control board there is a fire in the firepot.
20.Thermocouple - Drop Tube
21.Vacuum Switch
The vacuum switch is located on the right side of the appliance under the feed motor behind right side panel and connects to the drop tube with a hose. 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, plugged or if the firebox door is open.
22.Wall Control
The appliance is designed to run on a custom designed 3.3 volt DC thermostat wall control. It will not operate on any other wall control. Refer to the instructions supplied with the thermostat wall control.
23.Wiring Schematic for Control Board See Figure 39.1 below.
24.Wiring Schematic for Power Supply See Figure 39.2 below.
This thermocouple is located on the bottom of the drop tube on the right side and attached with a wing nut. It turns the convection blower on and off, varies the speed of the convection blower and will shut down appliance if internal heat exceeds set temperature.
13 | 12 | 11 n/a | 10 | 9 | 8 | 7 | 6 | 5 |
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Fuse 15A 120V, |
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Figure 39.1
Fuse 15A 250V |
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120V AC in | 120V AC out to | 15V DC out to |
| Control Board | Control Board |
Figure 39.2
#Description
1Combustion Blower
2
3 Feed/Auger Motors
4 Hopper/Door Switches
5
6Low Fuel
#Description
7Thermostat Wall Control
8Combustion Blower (feedback)
9 Firepot Thermocouple
10 Drop Tube Thermocouple n/a Not Used
11 Convection Blower (feedback)
#Description
12Igniter
13AC Power In for Igniter
14Convection Blower Power
15Overheat Sensor (Snap Disc)
16DC Power In from Power Supply
1712 Volt Battery
September 1, 2008 | Page 39 |