Owner`s manual

32 7036-187 January 29, 2014
MT. VERNON AE INSERT
Input Line Voltage
AC out to Control
Board
15V DC out to
Control Board
Fuse
15A 250V
Power Supply shown with cover removed
Input Line
Voltage
Heat sinks are taped to cover for shipping. Slowly lift cover
and cut the tape holding them in place and then you can
remove the cover.
17
1
2
3
4
5
6
7
8
910111213
14
15 16
n/a
Fuse 15A 230V,
under the cover
Fuse 15A 230V,
under the cover
Figure 32.2 - Control Board
Figure 32.1 - Power Supply
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retriesto
burnbackintothefeedsystemorpushexhaustupthefeed
tube,thissensorwillshuttheappliancedown,howeverthe
wallcontrolwillstilldisplaymessages.Thissensormustbe
manuallyre-set.Disconnectpowerbeforeresetting.
19. Thermocouple - Firepot
This thermocouple is located on top of the repot inside
the thermocouple cover (ceramic protection tube). The
thermocouple sends a millivolt signal to the control board
tellingthecontrolboardthereisareintherepot.
20. Thermocouple - Drop Tube
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.
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rebox.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rebox
door is open.
22. Wall Control Thermostat
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
appliancelocatedinthecomponentpack.
23. Wiring Schematic for Power Supply
See Figure 32.1 below.
24. Wiring Schematic for Control Board
See Figure 32.2 below.
# Description
1 CombustionBlower
2 Auto-Clean System
3 Feed/AugerMotors
4 Hopper/DoorSwitches
5 Auger/Auto-Clean/Vacuum
Switches
6 Low Fuel
# Description
7 Thermostat Wall Control
8 CombustionBlower(feedback)
9 Firepot Thermocouple
10 DropTubeThermocouple
n/a Not Used
11 ConvectionBlower(feedback)
# Description
12 Igniter
13 AC Power In for Igniter
14 ConvectionBlowerPower
15 OverheatSensor(SnapDisc)
16 DC Power In from Power Supply
17 12VoltBatteryBack-up