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Problem: Rapid accumulation of creosote in furnace and flue.

•  Use of high resin wood, such 

as pine.

•  Completely avoid using if at all possible. If hardwoods are not 

available, fuel the furnace with smaller loads. This will cause 

the thermostat to call for more heat more often, which will 

initiate the running of the draft blower. Consequently, the fires 

will be hotter, thereby reducing the accumulation of creosote.

Possible Causes:

Remedies:

•  Under-firing the furnace has 

caused low flue gas temperature.

•  Install flue gas thermometer and maintain stack temperatures 

between 300° and 400° F.

•  See #9.

•  Insufficient chimney draft.

8.

•  Improper connection in stove 

pipe causing air leakage or a 

structural defect in the chimney 

itself.

•  Inspect entire flue run, from the exhaust stack of the furnace to the 

termination cap. Repair as necessary.

•  Fire box not receiving adequate 

amount of oxygen.

•  Chimney is not tall enough, see “10/2 Rule” on page 7.

•  DANGER: Never use uninsulated stove pipe as chimney. 

Uninsulated pipe cannot be used as an outside flue because it 

causes rapid cooling of the stack gases, which causes them to 

condense as creosote on the inside of the flue.

•  Using uninsulated stove pipe for 

the chimney.

Problem: Smoke from the fire chamber is puffing back through the forced draft motor.

•  Chimney is not high enough.

•  Chimney should be a mininum of 6 feet high or refer to “10/2 Rule,” 

see page 7 for details.

Possible Causes:

Remedies:

9.

Problem: Insufficient air flow from the heat registers.

•  Return air not connected to 

furnace from the house.

•  Connect air to the home to circulate air flow.

Possible Causes:

Remedies:

•  Excessive duct run to the house.

•  Reduce duct run by placing the furnace closer to the house.

•  Replace air filter.

•  Air filter is dirty, restricting air flow.

10.

•  The hot air supply is being short 

cycled back through the return 

instead of going down stream to 

the house.

•  Redirect the hot air supply to send it down the air duct supply line. 

You may install a back draft damper from the direction of the return 

air.

•  If using flex duct, it is not straight 

and pulled tight. A sagging line 

will cause swirling in the duct and 

reduct air flow.

•  Ensure the flex duct is pulled tight and straight with no snags. 

Always go into your main supply lines at a slant pointing down 

stream.

•  Remove 90° elbows and replace with 45° elbows.

•  The use of 90° elbows in the duct 

run.

Summary of Contents for SF4200

Page 1: ...DOOR FURNACE MODEL SF4200 Manufactured by Shelter Furnace 10950 Linpage Place Saint Louis MO 63132 1 800 875 4788 MADE IN USA October 2016 Tested to UL391 and CSA B366 1 2011 and B415 1 2010 Standards...

Page 2: ......

Page 3: ...tput Wood that is properly cut and stored to dry will produce more BTUs and higher heat output than wood that has a higher moisture content Wood with higher moisture content will create creosote in th...

Page 4: ...rnace has been tested for clearance of 12 inches from the home this would give maximum airflow and provide the highest efficiency Transportation Damage Every effort has been made to ensure that your S...

Page 5: ...ion 11 General Operation 12 FIRST FIRE 12 LOADING WOOD 12 Fuel Recommendations 13 Disposal of Ashes 13 Heat Dump and Fuse Link System 14 Draft Blower 14 CREOSOTE FORMATION 14 CREOSOTE PREVENTION 15 Po...

Page 6: ...of these features as standard equipment offering you the most efficient durable and affordable appliance possible Abnormally cold weather could reduce the burn time Your Shelter Furnace is designed to...

Page 7: ...ot interchange with other brands A tube of high temp silicone caulk is included with your furnace Before using the silicone to install the anchor plate to the top of your Shelter Furnace ensure the ch...

Page 8: ...1 800 875 4788 THIS UNIT IS NOT TO BE CONNECTED TO A CHIMNEY FLUE THAT SERVES ANOTHER APPLIANCE INSTALLING THE ANCHOR PLATE Note Check with your dealer for the anchor plate that connects to Class A HT...

Page 9: ...up the chimney the length of the measurement increases Once this measurement reaches 10 feet this height on the chimney is your base height The chimney must be 2 feet taller than the base height If th...

Page 10: ...minimum Use Class A HT 2100 All Fuel 6 Inch Chimney for your Shelter Furnace Never use galvanized pipe in your flue connection Inspect the flue periodically for structural integrity Clean the flue reg...

Page 11: ...od or particleboard The prohibition against burning these materials does not prohibit the use of fire starters made from paper cardboard saw dust wax and similar substances for the purpose of starting...

Page 12: ...air duct vent as well as the vent for the cold air return The cold air return is an integral part of the system and must be used when installing the furnace Failure to use cold air return will pressur...

Page 13: ...ted insulated flexible hot air duct to connect the central duct system for the home When using flexible duct inside the home it must be pulled tight with no offsets or elbows to prevent turbulence and...

Page 14: ...rn Ideally locate each at opposite ends of the home If you don t the air will not flow evenly throughout the home This method will work well on homes built on concrete slabs and help create a good air...

Page 15: ...operating at full capacity The new steel and metal components of the furnace have a protective coating or paint on the surface which could produce an odor during the break in period Adequate ventilat...

Page 16: ...into a metal container with a tight fitting lid The closed container of ashes should be placed on a non combustible floor or on the ground well away from all combustible materials pending final dispo...

Page 17: ...motor turns on and supplies fresh air into the firebox producing a hotter fire which in turn provides more heat in the heat chamber The heat is then sent through the duct system throughout your home W...

Page 18: ...lammable liquids inappropriate materials Maintaining Your Furnace At the beginning of each heating season take time to thoroughly check your furnace and chimney system Make sure there are no leaks whe...

Page 19: ...e in any way CAUTION HOT SURFACES KEEP CHILDREN AWAY DO NOT TOUCH DURING OPERATION CAUTION INSPECT FLUE PIPES JOINTS AND SEALS REGULARLY TO ENSURE THAT SMOKE AND FLUE GASES ARE NOT DRAWING INTO AND AR...

Page 20: ...lower and motor pulleys may be changed but the electrical current flowing through the motor cannot exceed the nameplate rating On a direct drive system the motor should not be changed however the spee...

Page 21: ...1 4 PARTS LIST DESCRIPTION QTY ITEM BLOWER WHEEL 1 1 BLOWER HOUSING 1 2 MOTOR CAPACITOR 1 3 BLOWER MOTOR 1 4 2 1 3 4 1 2 2 3 2b 5 4b 5 4 SF4200 PARTS LIST ITEM QTY PART DESCRIPTION 1 1 FC000 ROLLER GR...

Page 22: ...B FAN LIMIT CONTROL WALL THERMOSTAT 120V AC 24V AC TRANSFORMER RELAY DRAFT BLOWER MOTOR BLOWER MOTOR BLACK 120V AC POWER SUPPLY WHITE BLACK GREEN BLACK WHITE YELLOW RED RED RED YELLOW BLACK ORANGE WIR...

Page 23: ...rnace not providing enough heat Furnace size is inadequate for your home 2 Open slide cover to an opening of approximately 3 8 inches Completely avoid using if at all possible If circumstances necessi...

Page 24: ...t accumulation surrounding air registers in the home Possible Causes Remedies Furnace is not connected to return air duct and is disbursing dirt throughout home Connect to return air duct system Insta...

Page 25: ...gases which causes them to condense as creosote on the inside of the flue Using uninsulated stove pipe for the chimney Problem Smoke from the fire chamber is puffing back through the forced draft mot...

Page 26: ...turing process Firing the furnace has raised the tempera ture of the fire box to a level that is sufficient to vaporize the residue The odor should disappear after a few hours of usage Possible Causes...

Page 27: ...nction containing gases within the fire chamber Possible Causes Remedies 17 Insufficient natural draft or an obstruction in the flue system See 8 9 and 16 Fire chamber filled to capacity with unburned...

Page 28: ...xcluded from this warranty In order to exercise the aforementioned warranty a certified professional must determine the appliance part to be defective He or she must submit a written statement to Shel...

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