SHELTER FURNACE WOOD BURNING OUTDOOR FURNACE MODEL: SF4200 Contains Proper Burn Practices! October 2016 Manufactured by: Shelter Furnace 10950 Linpage Place Saint Louis, MO 63132 1-800-875-4788 MADE IN USA Tested to UL391 and CSA B366.1-2011 and B415.
PROPER BURN PRACTICES FOR MAXIMUM EFFICIENCY AND SAFETY! • The chimney is one of the most important elements of the furnace. If the chimney is not connected properly and installed according to manufacturer’s specification and national and local codes, the unit is not safe and will not burn efficiently. Lack of proper chimney installation will cause unit to produce more smoke and less heat output. See Pages 6-7 of this manual to ensure proper installation.
SHELTER OUTDOOR FURNACE MANUAL MODEL: SF4200 EPA Certified to the Warm Air Furnace NSPS requirements, for sale May 2017 through May 2020. SAVE THESE INSTRUCTIONS Congratulations! You have selected the finest quality outdoor wood burning 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.
TABLE OF CONTENTS General Information 3 Furnace Clearances and Operation 4 Installing the Anchor Plate 5 Chimney Location and Clearances 6 Wood Storage and Care 7 Furnace Installation 7 Grounding Furnace 8 Hot Air Duct and Cold Air Return Installation 8 Burying Ductwork 9 Types of Installations 10 Central Duct Connections 10 Mobile Home Down Draft Furnace Connection 11 No Ductwork Conn
General Information ALWAYS KEEP YOUR WOOD COVERED YEAR ROUND; DRY WOOD WILL PRODUCE MORE BTU OUTPUT AND LONGER BURN TIMES. This EPA-Approved Shelter Furnace is an airtight central outdoor furnace engineered to accommodate the heating requirements of the average sized home, even during winter’s coldest months, with a heat output range up to 140,000 BTUs. It is constructed of high grade, heavy gauge steel and is continuously welded to assure the utmost in structural strength.
Furnace Clearances and Operation Before beginning your installation, consult with local authorities regarding the codes governing all such installations. DO NOT connect your Shelter Furnace to any flue that is servicing ANY other appliances. The Shelter Furnace may be placed outdoors or indoors.
You must install the wall thermostat for the furnace to operate. When the wall thermostat calls for heat, the draft motor will engage, allowing combustion air to flow into the firebox. This causes a hotter fire, increasing the heat in the heat chamber. When the home reaches the selected temperature on the wall thermostat, it will disengage the draft motor and the fire in the firebox will reduce to a low burn until the thermostat calls for another heat cycle.
Chimney Location and Clearances: Requires Class “A” HT 2100 All Fuel 6” Chimney The furnace requires a minimum of 6 feet of chimney. When positioning the furnace, maintain the “10/2 Rule” for the chimney – In order to determine proper chimney height above the roof, measure from the side of the chimney horizontally. As you move up the chimney, the length of the measurement increases. Once this measurement reaches 10 feet, this height on the chimney is your base height.
Wood Storage and Care: KEEP WOOD COVERED AT ALL TIMES. This cannot be over emphasized. Wood stored/stacked, uncovered, exposed to rain and snow has a higher moisture content, causing the formation of creosote, excess smoke, and it takes longer to ignite as well as producing poorer fires with lower sustained BTU output. Unseasoned wood ends up costing more in time trying to achieve and maintain proper temperatures in the firebox, while using more wood with less heat output.
Do Not Burn: • • • • • • • • • • • • Garbage; Lawn clippings or yard waste; Materials containing rubber, including tires; Materials containing plastic; Waste petroleum products, paints or paint thinners, or asphalt products; Materials containing asbestos; Construction or demolition debris; Railroad ties or pressure-treated wood; Manure or animal remains; Salt water driftwood or other previously salt water saturated materials; Unseasoned wood; or Paper products, cardboard, plywood, or particleboard.
• One 10 inch starter collar • One 12 inch starter collar If using 10 inch insulated flex hot air duct, it is for indoor use only. Outside the house, you must use 10 inch galvanized pipe, wrapped with weatherproof UV-jacketed insulation for protection from the sun’s UV rays. The 12 inch return air may be galvanized pipe. The 12 inch return air must be attached to the home so as not to pressurize the home.
TYPES OF INSTALLATIONS: Your Shelter Furnace is designed to be a supplemental or central heating source for your home. This wood burning furnace may be installed in parallel with a properly operating electric, gas, or oil-fired central furnace that is listed or certified in accordance with a nationally recognized safety standard within installation clearances as specified on the Shelter Furnace nameplate. When in a parallel installation the static pressure of the central furnace plenum may not exceed .
rise through the central furnace instead of going through the duct work. Split the hot air supply for the Shelter Furnace by using a “Y” and install one branch into each of the hot air ducts. Be sure both are pointing downstream. See diagram. EXISTING DOWNDRAFT FURNACE 8" BACK DRAFT DAMPER 8 INCH DIAMETER, MINIMUM HOT AIR DUCT FROM OUTDOOR FURNACE 10" TO 8" Y-TEE 8 INCH DIAMETER, MINIMUM 8 " BACK DRAFT DAMPER NO DUCT WORK INSTALLATION CONNECTION: A qualified professional should do the installation.
Outside Combustion air may be necessary for an indoor installation 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 alleviates these symptoms. • The house is equipped with a well-sealed vapor barrier and tight fitting windows, and/or has any powered devices, which exhaust house air. • There is excessive condensation on windows in the winter.
IMPORTANT: FOR TECHNICAL SUPPORT OR CUSTOMER SERVICE ISSUES, DO NOT RETURN TO THE STORE (THE STORE MAY NOT HAVE REPLACEMENT PARTS), CALL 1-800-875-4788. BURN WOOD ONLY! Fuel Recommendations: For the SF4200 model, heat resistant gloves are recommended when loading the furnace. Only use 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.
REPLACING THE FUSE LINK: Remove the hex nut on top of the release lid and pull the bolt down through the lid. Remove the separated fuse link pieces and connect the new fuse link to the shaft inside the furnace heat chamber. Connect the other end of the fuse link to the bolt that goes through the lid. Feed the bolt through the lid and replace the hex nut onto the bolt on top of the lid. As a precaution, always have a replacement fuse link on hand.
Creosote Prevention: To help prevent the formation of creosote within the flue, ALWAYS BURN DRY, SEASONED WOOD. Dry wood burns hotter, allowing flue gases to maintain temperatures above 212°F which should reduce the formation of creosote in the chimney. If the flue gas temperature falls below 212°F, condensation occurs causing creosote formation and accumulation within the chimney.
ALWAYS: • • • • • • • • • • • Locate the Shelter Furnace on a level, solid, non-combustible surface. Follow local codes concerning installation requirements. Connect power cord to a grounded 110 outlet. Connect cold air return to the house. Use Class “A” HT2100 All Fuel 6 inch chimney. Follow guidelines within this manual regarding burn procedures. Operate furnace with fuel door and ash door closed.
• DO NOT RELOCATE OR BYPASS ANY OF THE SAFETY CONTROLS IN THE ORIGINAL GAS/OIL/ELECTRIC FURNACE INSTALLATION. • DO NOT CONNECT TO ANY GAS FURNACE THAT HAS NOT BEEN CERTIFIED INITIALLY AS COMPLYING WITH CAN/CGA-2.3. • THE OPERATION OF THE GAS FURNACE MUST BE VERIFIED FOR ACCEPTABLE OPERATION BEFORE AND AFTER INSTALLATION OF THE ADD-ON APPLIANCE BY A GAS FITTER WHO IS RECOGNIZED BY THE REGULATORY AUTHORITY.
Grate and Fire Brick Diagrams 4 4b 5 5 2b SF4200 PARTS LIST 3 2 2 1 ITEM QTY 1 1 FC000 ROLLER GRATE HANDLE PART DESCRIPTION 2 1 ROLLER GRATE BASE 2b 1 ROLLER GRATE EXTENSION BASE 3 1 ROLLER GRATE SUPPORT 4 1 FC000 ROLLER GRATE 4b 1 FC000 ROLLER GRATE EXTENSION 5 12 FIRE BRICK 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 PARTS LIST 4 ITEM 1 2 3 4 QTY 1 1 1 1 DES
WIRING DIAGRAM Wiring Diagram OUTDOOR FURNACE B B FAN LIMIT CONTROL ORANGE YELLOW WALL THERMOSTAT BLACK YELLOW RED RED RED RELAY 120V AC/24V AC TRANSFORMER 120V AC POWER SUPPLY A BLACK A WHITE BLACK WHITE BLACK GREEN BLOWER MOTOR DRAFT BLOWER MOTOR 2 19 1
Troubleshooting 1. Problem: Bugs found in wood. 2. Problem: Home does not achieve comfortable temperature. 3. Possible Causes: • Wood has rotted or has been laying around for an extended period of time. Possible Causes: • Improper ductwork connection to existing furnace. Remedies: • Inspect the wood for obvious signs of insect infestation such as burrows or holes, avoid using if possible. Do not store wood indoors.
4. Problem: Draft blower will not run. NOTE: Verify that the wall thermostat is in the “HEAT” position, and make sure batteries are installed. Possible Causes: • Defective wall thermostat. • This can be checked by turning the thermostat to a temperature setting that is higher than the temperature in your home. If the draft blower does not operate, the thermostat may be defective. Replace if necessary. • Wall thermostat is in the wrong position.
8. Problem: Rapid accumulation of creosote in furnace and flue. Possible Causes: • Use of high resin wood, such as pine. 9. Remedies: • 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.
11. Problem: Circulation blower vibrates during operation. Possible Causes: • Screw on squirrel cage is not tight. 13. Remedies: • Check squirrel cage alignment and position so that it does not drag on the housing during rotation, then tighten the screw sufficiently to fasten the squirrel cage securely to the shaft. • Balance weights on squirrel cage have become dislocated. • You may attempt to adjust the weights yourself to obtain an acceptable balance.
16. Problem: Down draft on chimney caused by one or more of the following. Possible Causes: • There is an obstruction outside chimney, such as a tree. Remedies: • Remove obstruction. • Flue is located too close to the peak of the roof or does not rise above it to provide the proper draft. • Increase chimney height. • Flue is too close to another building. • Increase chimney height. • Obstruction in chimney. • Check entire chimney system including stove pipe run.
Warranty Information CERTIFICATE OF LIMITED WARRANTY: EXTENT OF COVERAGE: This warranty covers Shelter Furnaces SF4200, sold in the United States and Canada. This warranty is void if the Shelter Furnace is not installed, maintained, and operated in accordance with the instructions in the owner’s manual and local codes. Warranty is also null and void if the unit is used to burn materials for which the unit is not certified by the EPA.
