Magnum T40AC, Owner'S Manual

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37
Startup/ normal operation
When the circuit board is energized (the On/Off button is pushed), the start up cycle is initiated. This starts a timed
8-15 minute cycle which allows the unit to light. If the unit is on AC power, the automatic ignition system will
energize. The igniter (optional feature) will glow red in the firepot for 10 minutes and then shut off to protect the
igniter. If the unit is on DC back up power the automatic ignition system will not work and the unit will have to be
lit manually. If the proof of fire thermodisk has not reached operating temperature, the unit will go into the shut
down mode. The circuit board is programmed to start on the proper feed rate no matter where the heat level is set.
The unit should be set to the # 2 or #3 heat level for the first 45 minutes. To restart the system if it does not light,
push the ON/OFF button and the startup sequence will start again. If you open the door, it will stop the startup
sequence.
The circuit board is programmed to start on the number 2 heat setting no matter what the advance heat setting is on.
NOTE: Make sure that the wall thermostat is turned up so that the unit will start. (if using T-STAT or AUTO)
Once the unit is operating at the proper temperature (usually 10-15 minutes), the circuit board switches from the
start up cycle to normal operation. Then the manual draft slide can be set for the right fuel load in the firepot.
The unit is not designed to be operated for long periods of time on the highest setting. Optimum efficiency is
achieved by using lower settings (2 or 3). It is also recommended that the unit not be run for extended periods of
time on the number 1 setting. The draft blower and venting will fill up with fly ash after a long period of time. It is
recommended to run the unit on a higher setting (2 or 3) once a week. Run it this way for a few hours to clear the
venting and draft blower.
With all models, the manual draft will have to be adjusted when the higher (4-5) heat settings are used. The circuit
board will automatically change the draft and also the room air speed when you change heat settings.
If you open the door, ash pan door, hopper lid, have negative or positive pressure in the home or place the unit in a
drafty location the vacuum pressure switch will shut off the auger and the unit will go out. You can override the
circuit board by pressing the start button or On/Off button for several seconds and the unit will re-set itself. If the
unit does not respond, then the pressure switch will have to be re-set by shutting the unit down, unplugging the
power and then starting over again.
Shutdown
To shut the unit down simply turn the heat setting knob to the off position and the system will enter the shut down
mode.
The room fan and exhaust blower will continue to operate until the low limit cool down sensor tells it that
the fire is out. Then the entire system shuts down.
CIRCUIT BOARD FUNCTIONS (how does the circuit board operate?)
Before starting up the Magnum Wood Pellet unit again, it is important to remember to clean out the
firepot, empty the ashes, clean out the heat exchangers, vacuum out the hopper if needed and fill the
hopper with fuel.