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CLASSIC EDGE OUTDOOR FURNACE • OWNER'S MANUAL
Adding Wood - Best Practices for Frequency and Amount
For the best results, it is best to burn seasoned split wood less than 25%
moisture by weight. Burning wood with a high moisture content increases
maintenance requirements and can lower the service life of the outdoor
furnace.
To reduce condensation and creosote formation and to increase efficiency, the
recommendation is to load the outdoor furnace with only enough wood to
maintain the fire for your heat load requirements for 12 hours. There should be
enough wood left at the end of 12 hours to re-ignite the fire.
Adding more wood than is needed between fills causes increased condensation
in the firebox. Condensation reduces efficiency and increases the amount of
combustion by-products like creosote. Air flow can also be restricted because
too much wood in the firebox will create excessive coals or too deep of a coal
bed.
CAUTION
Do not burn wood with an excessively high moisture content and/or operate the outdoor
furnace frequently or for extended periods of time with the water temperature below
150˚F as this will result in more condensation in the firebox that can lead to excessive
corrosion.
NOTE: Operating at temperatures of 170˚F or more will decrease condensation in the
firebox. As a result, the outdoor furnace will operate with a greater efficiency and require
less maintenance. Failure to follow proper operating instructions may result in furnace
damage.
NOTE: To reduce flare-ups when opening the firebox door to reload with wood, it is best to
wait 15 minutes or more after the water temperature setpoint is met.
CAUTION
To reduce condensation, DO NOT overload the firebox with wood.
1. For Classic Edge 750 models, slowly lift and push the bypass door handle
toward the back of the outdoor furnace to open the bypass door; then
wait for 15 seconds.
NOTE: For Classic Edge 750 models, if the optional bypass alarm is installed, the alarm is
a reminder that the bypass door is open. During a cold start, it will continue to sound.
Keep your face away and stay as far away as possible from the firebox door area when
opening the door.
Run the cleaning rod
through the coal bed
once every 8-12 hours
to avoid bridging
and to help optimize
combustion.