21
Stove Operation - Circuit Board
dHC 2000 sTarT-uP sequenCe (15 minuTes) - HigH/low mode, wiTH THermosTaT or wall swiTCH:
Thermostat contacts open (it is satisfied) or closed (it is calling for heat) at time of start-up.
1. Push the ON/OFF button to start. The stove may take up to 30 seconds to establish rebox vacuum.
2. The ON/OFF light turns on solid.
3. The ON/OFF light starts to flash after the vacuum sensor has closed (approximately 15 seconds).
• The Auger Light will flash with each pulse of the auger (the auger feed rate is pre-programmed during
start-up). The auger light flashes:
- 3 seconds ON
- 8 seconds OFF
5. The combustion blower comes on at full speed.
6 a. The ignitor comes on.
b. The convection blower stays off.
c. The heat level indicator will show the heat level that the stove will run at after start-up.
d. The operator has no control over the start-up sequence. The operator can press and hold the
manual feed button to run the auger continuously for 60 seconds then must be pressed again for
another 60 seconds. The operator can also pre-set the heat output setting for operation. When the
unit reaches operating temperature the heat output will go to that setting.
7 a. The unit should light after 5 to 12 minutes.
b. Once the 120°F (49°C) exhaust temperature sensor closes, the convection blower will come on.
8. Fifteen minutes after pushing the start button, the ON/OFF light will change to solid. This signals that
the unit is at operating temperature.
Note: The circuit board can only be turned off during start-up if vacuum has been established and the
thermostat contacts are closed. The ON/OFF light will continue flashing
dHC 2000 normal oPeraTion - HigH/low mode, wiTH THermosTaT or wall swiTCH:
Thermostat contacts are closed (it is calling for heat).
The ON/OFF light is solid. The operator can now set the heat output, low feed trim, and whether the
convection blower is ON or OFF.
(Depending on the model) The convection blower can be turned OFF by depressing the convection
blower control button. When the air jacket reaches 160°F (71°C) the convection blower will come on
high, cooling the unit. For the best efficiency and to prevent cycling, the convection blower should be left
on at all times.
When operating on LOW HEAT LEVEL, the feed rate can be adjusted, using the auger trim, for different
quality fuels.
Please note: When the heat output is changed, the combustion blower and convection blower speed
change as well.
Thermostat contacts are open (it is satisfied).
The ON/OFF light starts flashing.
All functions drop to LOW speed. Combustion blower speed, convection blower speed and heat output
all change to LOW together.
Operator has no control over the Heat output, but can control the Low Feed Trim and Convection Blower
ON/OFF.
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