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Flex Fuel Owner’s Manual
March 2011
15: Maintenance
Cleaning the Ash Chamber
• Check that the furnace is not operational and is cool
• Open the outer enclosure door
• Open the ash chamber door
• Push the ash tray onto the bottom door frame
• Use the ash scraper to carefully pull the ash onto the ash tray. Leave approximately .5 in of ash in the
entire bottom of ash chamber to extend the life of the refractory
• Carefully remove the filled ash try and empty it into a metal container for final disposal
• Clean the area around the door seal to ensure the door closes properly
• Close the ash door, making sure the door is closed tight
Cleaning the Heat Exchanger
Heat exchanger cleaning is automatically activated by the Eco manager. The heat exchanger
cleaning can be manually activated in the Output Test screen. (section 9)
Cleaning the Furnace Surface
Only use a damp cloth to clean the surface of the furnace. A mild soap may be used if needed. DO NOT
use harsh chemicals or abrasive material.
Cleaning the Flue Pipe
Ash should be removed from the flue pipe through the cleaning openings approximately 2 times a year.
Annual Buffer Tank Blow Down
Water should be drained from the bottom of the buffer tank to remove any sediment buildup. The water
should drain until it runs clear, approximately 2 gallons, depending on tank size. A sample of water
should be tested to determine if the water should be replaced.
Annual Furnace Water Jacket Blow Down
Water should also be drained from the bottom of the furnace to remove any sediment buildup. The
the water should drain until it runs clear, approximately 2 gallons. You can also completely drain and
flush your furnace separate from the rest of the system.
Annual Water Testing
After the Blow Down procedure is preformed on the furnace, a sample of water is to be taken from the
bottom of the furnace. A water testing kit and mailing instructions is available at your dealer. Failure to
preform this test annually will result in a voided warranty.
