SHELTER FURNACE WOOD AND COAL BURNING INDOOR FURNACE MODEL: SF2400 Manufactured by: Shelter Furnace 10950 Linpage Place Saint Louis, MO 63132 1-800-875-4788 August 2013 Revision II MADE IN USA Tested to UL391 Standards
SHELTER INDOOR FURNACE MANUAL SF2400 SAVE THESE INSTRUCTIONS Congratulations! You have selected the finest quality wood and coal burning indoor furnace, manufactured with pride in the USA. Please take a few moments to carefully read the owner’s manual. By taking the time to familiarize yourself with your new Shelter Furnace, you will be able to look forward to years of trouble-free, dependable service. Installation: First: Check local codes.
TABLE OF CONTENTS General Information 3 Location and Installation 3 Assembly of Unit 4 Blower and Housing 4 Filter Box 5 Junction Box/Thermo-Disc 6 Chimney Types and Recommendations 7 Duct Runs 9 General Operation 10 Types of Wood to Use 10 First Wood Fire 11 Loading Wood 12 First Coal Fire 12 Disposal of Ashes 13 Creosote Formation 13 Creosote
General Information The Shelter Furnace has been engineered to accommodate the heating requirements of the average sized home, even during winter’s coldest months. It is constructed with high grade, heavy gauge steel and is continuously welded to assure the highest structural strength. In addition, the firebox is lined with firebrick to ensure many years of energy efficient service.
RECOMMENDATION: Purchase Chimfex™ Dry Chemical Chimney Fire Extinguisher. These are readily available at most stove shops and hardware stores. Smoke detectors should be installed on all levels of your home. Having a fire extinguisher in the furnace room or area is strongly recommended. Assembly of Unit Please review the parts list and diagrams contained on pages 15 - 16 of this manual. DOUBLE CHECK TO MAKE SURE YOU HAVE RECEIVED ALL THE REQUIRED COMPONENTS.
3. Assemble the following parts using 6 #10 sheet metal screws. Both “B” and “C” panels should fit inside of “D” and “A” panel flanges. Attach “D” (bottom panel) to “B” (side panel with electric) and “C” (side panel). After the top and sides are assembled, attach ”A” (top panel) using 6 #10 sheet metal screws provided.
CAUTION: DO NOT PLUG IN ELECTRICAL CORD AT THIS TIME 5. Mount the electrical box (A) with 4 #10 screws (provided). Remove face plate from junction box (B). Mount Thermo-disc (C) using 2 #10 screws (provided). Assemble junction box (B) to side of furnace using 2 #10 screws (provided). Mount green wire with eyelet to the bottom of the junction box mounting screw. Install wires to Thermo-disc posts. Wires are interchangeable. Reinstall junction box cover. B C A 6.
Install 10” starter collar and bend tabs for a tight connection to top of the furnace. The filter box requires one 20” x 25” x 1” filter (not included, but available at most hardware and home centers). With the connection of the chimney pipe and ductwork, your furnace installation is complete. Inspect your filter regularly and replace the filter every 30 days during heating season for maximum efficiency. Chimney Types and Recommendations See Diagram on page 8.
For the best draw, the chimney termination should be at least 2 feet above the highest portion of the roof that is within a 10 foot radius of the chimney. The termination cap should be designed to inhibit downdrafting without restricing the exhaust discharge. USE LISTED UL 103 TYPE HT 2100 CHIMNEY ONLY. When using a brick chimney, you must line the entire chimney with stainless steel liner. The liner must be a 6 inch liner.
WARNING- RISK OF FIRE: • Do not operate with flue draft exceeding .08 water column inches (19.9 Pa). • Do not operate with fuel loading door or ash drawer open. • Do not store fuel or other combustible materials within marked installation clearances. • Inspect and clean flues and chimney regularly. DANGER: Risk of Fire and Explosion. Do not burn garbage, gasoline, naphtha, engine oil, or other flammable liquids/inappropriate materials.
IMPORTANT: FOR TECHNICAL SUPPORT OR CUSTOMER SERVICE ISSUES, DO NOT RETURN TO THE STORE (THE STORE DOES NOT HAVE REPLACEMENT PARTS), CALL 1-800-875-4788. BURN WOOD AND COAL ONLY! General Operation NOTE: Types of Wood to Use: We advise using only dry, seasoned hardwoods in your Shelter Furnace rather than high resin woods such as pine. Firewood should be cut at least one full season prior to the time of its intended use, for optimum heat output.
DANGER: RISK OF FIRE OR EXPLOSION – do not burn garbage, gasoline, naphtha, engine oil, or other flammable liquids/inappropriate materials. Supplemental Outside Combustion air may be necessary if: • the solid-fuel-fired appliance does not draw steadily, smells, experiences smoke rollout, burns poorly, or back-drafts whether or not there is combustion present. Opening a window slightly on a calm day may alleviate these symptoms.
the break in period. Adequate ventilation within the home and furnace room or area is recommended during the initial firing and break in period to accommodate this possibility. Your new Shelter Furnace is classified as having airtight construction. This type of design should enable you to experience an average burn time between 6 and 12 hours per full load of fuel (dry, seasoned hardwood). However, abnormally cold weather may reduce the burn time somewhat.
NOTE: Do not burn coke, charcoal, highly volatile Bituminous coal, sub Bituminous, lignite or cannel coal (sometimes called channel coal or candle coal). Never burn chemically processed logs, such as fire logs, as their use is intended for fireplaces only. Please follow all guidelines in this manual concerning wood and coal burning applications due to safety concerns and to maintain warranty coverage.
There is no warranty on electrical components damaged due to power failure. NOTE: OVER-FIRING OR DELIBERATE ABUSE CAN EASILY BE DETERMINED UPON INSPECTION AND WILL VOID THE WARRANTY. Always keep your wood covered year round. Dry wood will produce a higher BTU output and a longer burn time. Refer to the nameplate on furnace for additional information. WARNING: RISK OF FIRE • Do not operate with the flue draft exceeding .08 water column inches (19.9 Pa).
Furnace Diagram - SF2400 9 8 10 7 11 6 12 13 5 3 2 1 4 SF2400 PARTS LIST 15 ITEM QTY 1 1 Ash Pan Tray PART DESCRIPTION PART NUMBER 2 1 Draft Control FCDCA 3 1 Furnace Shell FC45SHELL 4 1 Right Side Panel with Insulation FC45RA 5 1 Thermo-Disc FCTD110 6 1 Electrical Box FC45ECC 7 1 Filter Box 8 1 Blower Assembly FC45AP FCFB FC3SPMOTOR 9 1 Top Panel 10 1 Left Side Panel with Insulation FC45TOP 11 4 Door Hinge Pin FCDP 12 1 Fuel Door Assembl
Grate System Diagram - SF2400 2 SHELTER PARTS LIST 1 1 10 FIRE BRICK 2 2 WOOD GRATES Blower Motor Assembly Diagram PARTS LIST ITEM 1 2 3 4 QTY 1 1 1 1 DESCRIPTION BLOWER WHEEL BLOWER HOUSING MOTOR CAPACITOR BLOWER MOTOR 2 1 3 SHELTER PARTS LIST 4 1 1 BLOWER WHEEL 2 1 BLOWER HOUSING 3 1 MOTOR CAPACITOR 4 1 BLOWER MOTOR 16
WIRING DIAGRAM Wiring Diagram BLACK (L1) BLACK L1 WHITE (L2) THERMAL FAN CONTROL SWITCH GREEN (GRD) L2 L3 L4 BLOWER MOTOR JUNCTION BOX THERMO SWITCH BOX Adjusting the Thermo-Disc Your SF2400 comes with an adjustable Thermo-Disc that turns the blower on and off automatically. The settings are preset at the factory to turn the blower on at 125 degrees F and off at 105 degrees F.
Troubleshooting 1. 2. Problem: Circulation blower will not turn on. • Defective motor. • Contact your supplier for replacement. • Improper wiring. • Review wiring diagram. If wired correctly, seek professional assistance. • Defective capacitor (makes humming noise without engaging motor.) • Replace capacitor. Problem: Circulation blower runs constantly. Possible Causes: • Improper wiring. • 3. Remedies: • If the blower fails to run, replace the fan Thermo-Disc switch.
4. 5. Problem: Flames discharging from fuel door during reloading. Possible Causes: • Opening the door has provided additional oxygen which has ignited the accumulated gases from partially spent fuel. • Cast iron damper in the “CLOSED” position. • Open damper. • Insufficient natural draft or an obstruction in the flue system. • See #6 and #9. • Fire chamber filled to capacity with unburned fuel. • Do not attempt to overload the furnace.
7. 8. Problem: Rapid accumulation of creosote in furnace and flue. Possible Causes: • Use of high resin wood, such as pine. Remedies: • Completely avoid using if at all possible. If hardwoods are not available, fuel the furnace with smaller loads. This will cause the draft control to call for more heat more often. Consequently, the fires will be hotter, thereby reducing the accumulation of creosote. • Under-firing the furnace has caused low flue gas temperature.
9. Problem: Down draft on chimney caused by one or more of the following. Possible Causes: • Cast iron damper in “CLOSED” position. Remedies: • Open damper. • Flue has a cold spot which inhibits exhaust discharge from rising properly. • This problem may occur in factory built flues because the insulation has settled or a seam has ruptured. In masonry flues, mortar loss may be causing seepage of cooler outside air into the stack. Check entire flue for structural integrity and leakage.
12. Problem: Home does not achieve comfortable temperature. Possible Causes: • Improper ductwork connection to existing furnace. Remedies: • Refer to information in the manual relating to the proper installation procedures or contact your local heating and cooling contractor. • Improperly sized ducting. • Refer to information in the manual relating to the proper ducting procedures or consult your local heating and cooling contractor. • Excessive dirt accumulation in air filter.
Warranty Information CERTIFICATE OF LIMITED WARRANTY: EXTENT OF COVERAGE: This warranty covers any Shelter Furnace sold in the United States and Canada. This warranty applies only if the Shelter Furnace is installed, maintained, and operated in accordance with the instructions in the owner’s manual and local codes. This warranty applies to the original purchaser/owner of the Shelter Furnace and is not transferable.
