Shelter® Operator Manual | SF2600, SF3100


Problem: Home does not achieve comfortable temperature.


• Improper ductwork connection to existing furnace. Possible Causes:

• Refer to information in the manual relating to the proper installation procedures or contact your local heating and cooling contractor. • Refer to information in the manual relating to the proper ducting procedures or consult your local heating and cooling contractor. • Check and replace filter. Proper filter size is 20” by 25” by 1”.

• Improperly sized ducting.

• Excessive dirt accumulation in air filter. • Combustion chamber not receiving an adequate amount of oxygen. • Furnace size is inadequate for your home. • Fueling furnace with wet or unseasoned wood.

• Furnace room may be too airtight. Install an aperture to the outside consisting of a minimum of 12 square inches or 4 inches round.

• Consult a professional to determine correct sizing.

• Completely avoid using if at all possible. If circumstances necessitate the use of wet or unseasoned wood, then fuel the furnace with smaller loads. This will cause the thermostat to call for heat more often, which will initiate the running of the draft blower. Consequently, the fires will be hotter, thereby reducing the accumulation of creosote.


Problem: Bugs found in wood.

Possible Causes:


• Inspect the wood for obvious signs of insect infestation such as burrows or holes, avoid using if possible. Do not store wood indoors.

• Wood has rotted or has been laying around for an extended period of time.


Problem: Circulation blower will not turn on.

Possible Causes:


• Defective fan limit control.

• Check by pushing the white button on the fan limit control to the manual position where the blower should turn on. If the blower fails to run, replace the fan limit. • Replace capacitor. • Contact your supplier for replacement. • Review wiring diagram. If wired correctly, seek professional assistance.

• Defective capacitor.

• Defective blower. • Improper wiring.


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