Monessen Hearth DFS42NVC User Manual

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  1.  STOP! Read the safety information label.
  2.  Make sure the manual shutoff valve is fully open.
  3.  This gas log set is equipped with an ignition device (piezo) which automatically lights the pilot. If piezo 

ignitor does not light the pilot, refer to instructions for “Match Lighting Instructions,” page 29.

  4.  Turn gas control knob clockwise 

 to the OFF position, and turn ON/OFF switch to OFF position.

  5.  Wait (5) minutes to clear out any gas. Then smell for gas, including near the floor. If you smell gas, 

STOP! Follow “What to Do if You Smell Gas,” page 27.  If you don't smell gas, go to next step.

  6.  From OFF position, turn the gas control knob counterclockwise 

 to IGN position. Push 

in control knob for 5 seconds. NOTE: If you are running the heater for the fi rst time, it 
will be necessary to press in the control knob for 30 seconds to allow air to bleed 
out of the gas piping. 

  7.  With the control knob pushed in, push in and release the piezo ignitor button to light the pilot.
  8.  Continue pushing the control knob in for a further 60 seconds to prevent the flame detector from shutting 

off the gas while the probe is warming up. Release the control knob.

  9.  Turn gas control knob counterclockwise 

 to the ON position.

 10.  After the pilot has been lit for one minute, the burners can be turned on. Turn the ON/OFF switch to 

ON position or adjust thermostat to desired setting.

 11.  If the gas logs will not operate, follow the instructions “To Turn Off Gas To Heater” below and call 

your service technician or gas supplier.

  1.  Turn control knob clockwise 

 to OFF position to completely shut off the heater.

  2.  If applicable: Turn ON/OFF switch to OFF position and/or set thermostat (if present) to lowest setting.
  3.  If applicable: Turn off all electric power to the heater.

Hi/Lo Control 

Ignitor Pilot Control

On/Off Switch

Piezo