Enviro EF2 Service Manual

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dHC 4100 normal oPeraTion - auTo/oFF mode, wiTH THermosTaT or wall swiTCH:
Thermostat contacts are closed (it is calling for heat).
If the stove is OFF then the unit will start the start-up sequence (see DHC 4100 Start-up SequenCe (15
minuteS) - on/oFF mode, With thermoStat or Wall SWitCh).
The operator can now set the heat output, low feed trim, and whether the convection blower is ON or
OFF (depending on model).
The combustion fan trim changes exhaust voltage incrementally on all heat levels. When this button
is pressed, all the lights come on except the one that is the set point. This will indicate what setting it
is on before adjustment. Hold the button down and press the up or down arrow to adjust the setting.
Depending on the model, the convection blower can be turned OFF by depressing the convection blower
control button. For the best efficiency, the convection blower should be left on at all times.
Feed trim changes ‘ON’ time in 0.25 sec. increments for each feed settings. Position #4 is the factory
default setting, there is one (1) setting up and three (3) settings down. When this button is pressed all
the lights come on except the one that is the set point. This will indicate what setting it is on before
adjustment. Hold ‘Feed Rate Trim’ button down and press the up or down arrow to adjust setting. Trim
settings are still maintained after loss of power.
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) .
1. The stove’s HEAT LEVEL and Fans will drop down to the LOW setting for 30 minutes.
2. If the thermostat contacts close within the 30 minutes, the HEAT LEVEL will return to the previous
MANUAL setting.
OR
If the thermostat contacts remain open the stove automatically begins its shutdown routine.
a. All lights turn off.
b. Auger stops feeding.
c. Combustion blower goes to full speed until exhaust sensor opens and blower stops.
The ON / OFF button can be presses at any time the the stove will immediately shut down. The stove will
re-light when the thermostat contacts close again.
dHC 4100 sHuT down - auTo/oFF mode, wiTH THermosTaT or wall swiTCH:
Thermostat contacts are closed (it is calling for heat) .
The stove will not shut off.
If you push ON/OFF button the circuit board will go through a start-up sequence (see DHC 4100
Start-up
SequenCe (15 minuteS) - on/oFF mode, With thermoStat or Wall SWitCh).
Thermostat contacts are open
(it is satisfied) .
1. Push ON/OFF button to turn stove off, turn the thermostat down, or off
2. The unit will run on low for three (3) minutes before it turns off.
3. All lights turn off.
3. Auger stops feeding.
4. Combustion blower goes to full speed until exhaust sensor opens and blower stops.
Stove Operation - Circuit Board

Enviro EF2 Specifications

General

Brand	Enviro
Model	EF2
Category	Stove
Language	English