SF1000 Operator Manual | 8.2018

5. Mount the forced draft blower with three 1/4-20 x 3/4" bolts (provided).

Attach with three 1/4-20 x 3/4" Bolts (provided) 6. Attach Fan limit with three #8 screws in pre-drilled holes. 7. Mount the electrical control center with four #8 screws (provided) 8. Secure the flex conduit to the side of the furnace using the brackets with two (2) screws provided.

Fan Limit Control: To install, remove cover, attach with three (3) #8 sheet metal screws and replace cover.

Thermostat Terminals

9. Plug motor into the back of the electrical control center. 10. Connect the thermostat wire (not included) to the two (2) posts located on the side of the control center. For convenience, you might consider locating the wall thermostat next to your existing thermostat in your home. The thermostat MUST be installed for the furnace to operate. 11. Plug the 3 pronged grounded plug into a grounded electrical outlet.


Attach the two wall thermostat wires to the terminals shown.


Chimney Types and Recommendations See Diagram on page 8. Safety requirements demand that your Shelter Furnace be connected to “Class A” HT2100 All Fuel, or stainless-lined masonry chimney ONLY. By definition, “Class A” refers to either a lined masonry chimney or all fuel factory-built chimney. Although experts have expressed differing opinions as to which system is the best, it is a matter of what you find most suitable. Regardless of your choice of chimney type, for models SF1000, a minimum 6-inch diameter chimney is needed. In order to create the most effective draft, the chimney size should not exceed 12 inches, with a maximum .08 water column inches of draft. The flue draft can be measured with the use of a draft gauge or manometer. The stovepipe required to connect the furnace to the chimney should be a minimum of 24 gauge black or stainless steel. NEVER USE GALVANIZED PIPE. Horizontal run should not exceed 5 feet and should have a minimum rise of 2 inches per foot. No installation should have more than 2 elbows, a 45° elbow is recommended over a 90° elbow. As a safety precaution, all pipe selections should be fastened together with a minimum of 3 sheet metal screws. For your convenience, the crimped male ends of the pipe should point toward the furnace to form drip-free connections, thereby reducing the possibility of creosote leakage from the joints. Always install a "T" with clean-out cap to the chimney outlet on the back of the furnace. This allows for easier cleaning of the chimney system. When using a masonry chimney, you must line the chimney with a stainless steel liner. The stainless steel liner will keep the chimney temperature hotter for better draw and significantly reduce the creosote formation in the chimney. If using this method, a 6-inch stainless liner should be used for SF1000.


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