Shelter Furnace | SF2626 | Owner`s manual | Shelter Furnace SF2626 Owner`s manual

SHELTER FURNACE
WOOD AND COAL BURNING
INDOOR FURNACE
MODELS: SF2626, SF2631, SF2639
Manufactured by:
Shelter Furnace
10950 Linpage Place
Saint Louis, MO 63132
1-800-875-4788
AUGUST 2014
Revision IV
MADE IN USA
Tested to
UL391 and
CSA B366.1-2011
Standards
SHELTER INDOOR FURNACE MANUAL
MODELS: SF2626, SF2631, SF2639
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. The installation must comply with all local rules and requirements.
Furnace installation is to be performed by a qualified installer. This furnace must not be installed in trailers, modular or mobile
homes. Always have a properly installed and functioning smoke detector in your home. To prevent accidental injury, do not
allow anyone who is unfamiliar with the furnace to operate it. Spend time familiarizing yourself with your Shelter Furnace,
especially the different settings and the effects they have on burn patterns. It is impossible to predict how each setting will
affect your furnace due to variations in conditions, fuels and temperatures.
Transportation Damage:
Every effort has been made to ensure that your Shelter Furnace will arrive in perfect condition. Any visible damage should be
noted on the freight bill at the time of delivery. If upon unpacking your Shelter Furnace you find damage has occurred during
transit, notify your supplier immediately. Your supplier will advise you what actions must be taken to address the problem.
Disclaimer Notice:
The listed BTU rating for your new Shelter Furnace was obtained using laboratory calculations. The actual BTU output you
experience may vary somewhat depending on the type, condition and moisture content of the fuel used, damper adjustment,
chimney type and other factors. Therefore, the manufacturer disclaims any guarantee as to the BTU output or capacity.
Shelter Furnace disclaims any responsibility for the following: installation of a furnace that has been altered or modified in any
way; installation of the furnace other than as instructed in this manual; installation and/or use of any component or part not
approved by Shelter Furnace for use with this furnace. Be sure to complete and return your warranty card within 30 days of
purchase in order to activate warranty coverage on your furnace.
Manufacturer’s Notice:
Please be advised that we periodically make changes to improve our products, therefore the information in this manual may
not be completely applicable to your Shelter Furnace. Please refer to markings on the appliance for additional information.
THIS IS A WOOD AND COAL BURNING FURNACE ONLY AND SHOULD NOT BE
ALTERED IN ANY WAY.
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TABLE OF CONTENTS
General Information 3
Location and Installation 3
Assembly of Unit 4
Blower and Housing 4
Filter Box 5
Draft Blower 6
Draft Blower Shield 6
Fan Limit / Electrical Control Center 7
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
Draft Blower 13
Creosote Formation 13
Creosote Prevention 13
Chimney Fire Warning 14
Power Failure 14
Furnace Diagram with Parts List 15
Grate System Diagram - SF2626 16
Grate System Diagram - SF2631 16
Grate System Diagram - SF2639 17
Blower Motor Assembly Diagram 17
Wiring Diagram 18
Troubleshooting 19
Warranty Information 25
DOUBLE CHECK TO MAKE SURE YOU HAVE RECEIVED ALL OF THE
REQUIRED COMPONENTS. IF YOU FIND THAT THERE IS A PART MISSING,
CALL 1-800-875-4788 FOR FASTEST SERVICE, PLEASE DO NOT GO BACK TO
THE STORE. STORE DOES NOT HAVE REPLACEMENT PARTS.
2
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. The design of the secondary combustion
chamber increases fuel efficiency by creating a “secondary burn” of smoke and wood gases before they are vented up the chimney. The
cast iron doors are custom fitted to provide an airtight seal, greatly extending the burn time and ensuring maximum efficiency in fuel
consumption. The heavy-gauge cast iron shaker grate, designed for maximum heat transfer, allows for convenient ash removal and
reduced maintenance.
For total comfort and convenience, a thermostatically controlled draft and circulation blower system is included. These fully automatic
components furnish rapid heat disbursement throughout your home, minimizing recovery time when the wall thermostat demands heat.
All of these features are standard, offering you the most efficient, durable and affordable indoor wood and coal burning furnace.
Your Shelter Furnace is designed to be either a supplemental or central heating source for your home. This wood and coal burning
furnace may be installed in parallel with a properly operating electric, gas or oil-fired central furnace, listed or certified in accordance
with a nationally recognized safety standard, and within clearances specified on the Shelter Furnace nameplate. When in a parallel
installation the static pressure of the central furnace plenum may not exceed 0.15 water column inches and the maximum setting on
central furnace limit switch is 182°F. With the Shelter Furnace in an “Interconnection Arrangement” your furnace should be upstream
of the central furnace. The Shelter Furnace warm air supply should never be connected to return air for the central furnace. A qualified
installer should perform the installation.
IMPORTANT: FOR TECHNICAL SUPPORT OR CUSTOMER SERVICE
ISSUES, DO NOT RETURN TO THE STORE (THE STORE DOES NOT HAVE
REPLACEMENT PARTS), CALL SHELTER FURNACE AT 1-800-875-4788.
Forced Hot Air Circulation:
The plenum size of your Shelter Furnace must not be reduced to less than 12 inches in diameter or 113 square inches, and must provide
a minimum of 18 inches between the top of your Shelter Furnace and the main trunk connection. The plenum attached to the furnace
must be constructed of metal. The warm air supply duct system should be constructed of materials with a minimum temperature rating of
250° Fahrenheit.
Clearances:
Unit must be placed on a non-combustible floor. This floor must extend at least 16 inches in front, 8 inches on either side of fuel loading
and ash removal doors, underneath the chimney connector and must extend 2 inches on either side of the chimney connector. The
furnace must maintain the following clearances to combustibles:
• Heat plenum = 2 inches
• Chimney connector = 18 inches
• Front = 48 inches
• Rear = 31 inches
• Sides = 12 inches
• Main furnace = 12 inches
These are minimum clearances and should be strictly followed. In the case of a power outage, a dangerous level of heat accumulation
may develop. Do not store fuel or other combustible materials within installation clearances.
Location and Installation
NOTE: Before beginning installation, consult proper local authorities regarding local codes governing all such applications and
installations.
DO NOT CONNECT THIS UNIT TO A CHIMNEY FLUE SERVING ANOTHER APPLIANCE. Your furnace must be placed on a non-
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combustible floor. Position the furnace as close to the chimney as possible. Air for combustion must be provided into the room where the
furnace is located. Allow air free access to the furnace for combustion and ventilation.
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.
OPEN/CLOSE
RETURN DAMPERS
3 PLACES
RETURN AIR DUCT
SUPPLY DUCT
BACK DRAFT
DAMPERS
Assembly of Unit
Please review the parts list and diagrams contained on pages 15 - 17 of this manual.
DOUBLE CHECK TO MAKE SURE YOU HAVE RECEIVED ALL THE REQUIRED
COMPONENTS. IF YOU FIND THAT THERE IS A PART MISSING, CALL
1-800-875-4788 FOR FASTEST SERVICE, PLEASE DO NOT GO BACK TO THE
STORE. STORE DOES NOT CARRY REPLACEMENT PARTS.
NOTE: For your convenience your Shelter Furnace has been factory assembled and the electrical control assembly pre-wired.
1. Fasten the right and left side angle brackets to the
circulation blower using (4) ¼ - 20 bolts and nuts.
Line up the blower with the pre-drilled holes on the
backside of the furnace, firmly attach with the
screws provided.
2. Attach blower to the left and right mounting brackets.
1/4-20- Bolt
1/4
20 Bolt
AngleBracket
Bracket
Angle
Four Places
1/4 - 20 Nut
1/4-20 Nut
Blower
Assembly
Blower
Assembly
Blower
Assembly
Mounting
Screw
Mounting
Screw
Mounting
Screw
4
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.
Top
Panel
(A) (A)
Panel
TopTop
Panel
(A)
#10
Metal
Screw
#10 Sheet
Sheet
Metal
Screw
#10
Sheet
Metal
Screw
Twelve Places
Side
Panel
(C)
Side
Panel
(C)
Side
Panel
Side
Panel
With
Electric
Side
Panel
with
Electric
Side
Panel
with
Electric
(B)(B) (B)
Bottom
Panel
(D)(D)
Bottom
Panel
Bottom
Panel
4. Position the assembled filter box on rear of furnace, supporting it approximately 4 inches from the floor, covering the rear
distribution blower. Make sure the filter box is tightly pressed to the back of the furnace. Use 8 #10 self-tapping
screws (included) to firmly attach the filter box to the sides of the furnace.
Filter Filter
BoxBox
Box
Filter
#10 Screw
#10
Screw
#10
Screw
5
5. Mount the forced draft blower with 3 ¼-20 x 3/4 inch bolts (provided).
-- 20
1/4
20 Bolt
Screw
1/4-20
Screw
6. Attach the draft blower shield to the bracket that is mounted on the front of the furnace, above the draft
blower, using the ¼-20 x ¾ inch bolts and nuts provided.
1/4
- 20
xx Bolt
3/4
3/4 Bolt
Bolt
1/41/4-20
- 20
x 3/4
1/4-20
1/4
- 20
Nut
1/4
- 20
NutNut
6
7. Attach Fan limit with 3 #10 screws in pre-drilled holes.
8. Mount the electrical control center with 4 #10 screws (provided).
Fan Limit Control:
Fan
Limitremove
thermostat
To
install,
cover, attach
To install,
remove
with
three #10
sheetthermostat
metal screws
cover, attached with three #10
and replace cover.
sheet metal screws and replace
thermostat cover
THERMOSTATTERMINALS
TERMINALS
THERMOSTAT
DETAIL B
SCALE 1
B
Attach the two wall thermostat
ATTACH THE TWO WALL
wires
to the terminals
THERMOSTAT
WIRES shown
TO
THE TERMINALS SHOWN
9. Secure the flex conduit to the side of the furnace using the bracket with 1 screw (provided).
10. Plug motor into the back of the electrical control center.
11. Connect the thermostat wire (not included) to the 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. (See diagram for step 8)
12. Plug the 3 pronged grounded plug into a grounded electrical outlet.
The filter box requires one 20” x 25” x 1” filter (not included, but available at most hardware and home centers).
See diagram for proper installation of electrical assembly and filter box. The bracket must be attached to the side of the furnace to secure
the conduit. With the connection of the thermostat, 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.
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 SF2626 and SF2631, a minimum 6-inch diameter chimney is needed. For model SF2639, a minimum 8-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 gage or manometer. If there is more than .08 water
column inches of draft, it can be adjusted with the installation of a flue damper. The stovepipe required to connect the furnace to the
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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. Installing a heat reclaimer in the pipe is not recommended because it reduces the stack temperature thus
causing creosote formation. Installing a manually operated cast iron damper in the stovepipe between the furnace and the chimney pipe is
recommended. The addition of a damper will greatly assist in regulating the fire and achieving optimum results. Always install a tee with
clean-out cap to the chimney outlet on the back of the furnace. This allows for easier cleaning of the chimney system. Never use a 90°
elbow off the back of the furnace.
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 models SF2626 and SF2631; an 8-inch stainless liner should be used for the SF2639.
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WARNING- RISK OF FIRE:
• Do not operate with flue draft exceeding .08 water column inches (19.9 Pa).
• Do not operate with fuel loading or ash removal doors 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.
WARNING:
• NEVER use galvanized pipe in your chimney connection, it produces poisonous gases when subjected to extreme
temperatures.
• USE only lined masonry or manufactured Class “A” HT2100 All Fuel Chimney for your furnace.
• INSPECT chimney system periodically for structural integrity.
• CLEAN the chimney system regularly to prevent creosote accumulation.
• NEVER leave the ash pan in your furnace during operation.
• DO NOT CONNECT THIS UNIT TO A CHIMNEY FLUE SERVING ANOTHER APPLIANCE.
Duct Runs
Ductwork should be designed so the external static pressure on high speed does not exceed .02 water column inches while developing
air velocities of 450 - 600 feet per minute at the registers. The heat outlet area should never be less than 12 inches round or 113 square
inches. The furnace can be installed with a cold air return system, or the return air can be drawn from the basement. If the return air is
drawn from the basement, you will have to install 3 “open and close” air register vents in the return air duct connected to your existing
furnace; the air will take the path of least resistance without using ductwork to connect the two together. The return air system should
be a minimum of 10% larger than the heat outlet to readily transfer the cold air back to the furnace. Avoid using 90° elbows in duct runs;
45° elbows provide better airflow and less resistance. CAUTION: The warm air supply outlet of the supplementary furnace should not be
connected to the cold air return inlet of the central furnace, because a possibility exists for components to overheat and cause the central
furnace to operate other than intended.
Canadian Requirements for Supplemental/Add-On Furnaces
• DO NOT USE DUCT ELBOWS HAVING AN INSIDE RADIUS OF LESS THAN 6 inches (150mm) ON OIL,
ELECTRIC, OR GAS FURNACES.
• DO NOT CONNECT TO A DOWNFLOW FURNACE.
• DO NOT CONNECT DUCTWORK SO THAT A REVERSE FLOW IS POSSIBLE.
• OPERATE THE GAS/OIL/ELECTRIC/ FURNACE PERIODICALLY TO ENSURE THAT IT WILL OPERATE
SATISFACTORILY WHEN NEEDED.
• CERTIFIED FOR INSTALLATION WITH APPROPRIATE DUCTWORK CONFIGURATIONS ONLY.
• 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.
• DO NOT CONNECT TO ANY GAS FURNACE THAT IS NOT EQUIPPED WITH AN AIR-CIRCULATION BLOWER,
OR TO A CHIMNEY OR VENT SERVICING A GAS FURNACE OR GAS APPLIANCE.
The add-on unit should only be installed on a furnace duct system and chimney that are in good operating condition.
On a belt-driven system, blower 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 speed of the motor may be increased. The
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blower cannot be changed. This equipment should be installed, acceptable to regulatory authority, by experienced licensed personnel.
The installation should comply with requirements of CAN/CSA-B365, and changes to the installation should comply with CSA-B139 (for
oil-fired), C22.1 (for electric), or CAN/CGA-B149.1 or CAN/CGA-B149.2 (for gas-fired).
IMPORTANT: FOR TECHNICAL SUPPORT OR CUSTOMER SERVICE
ISSUES, DO NOT RETURN TO THE STORE (THE STORE DOES NOT HAVE
REPLACEMENT PARTS), CALL SHELTER FURNACE AT 1-800-875-4788.
BURN WOOD AND COAL ONLY!
General Operation
NOTE: Always pull the bypass rod all the way out before opening the fuel door.
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. Firewood should be stacked to provide a free
flow of air between the logs, thus allowing more rapid seasoning of the wood. If wood is stored outdoors, it should be completely covered
year round to protect it from moisture and exposure to the elements.
FUEL RECOMMENDATIONS: (Log size by model)
• SF2626 – 22 inch maximum log length
• SF2631 – 28 inch maximum log length
• SF2639 – 34 inch maximum log length
Use extreme caution when opening the door during operation, temperatures can exceed 300°F. Always pull the bypass rod all the way
out before opening the fuel door. Wait at least 10 seconds after releasing the latch, and then proceed to the fully open position. Opening
the door in this manner is designed to eliminate the possibility of gaseous ignition. Heat resistant gloves are recommended when
opening the fuel door, regulating the spin draft, or emptying the ash pan.
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 ARE NOT BEING CIRCULATED BY THE AIR-CIRCULATION SYSTEM.
• CLEANING OF THE HEAT EXCHANGER, FLUE PIPE, CHIMNEY AND DRAFT INDUCER (IF USED), IS
ESPECIALLY IMPORTANT AT THE END OF THE HEATING SEASON TO MINIMIZE CORROSION DURING THE
SUMMER MONTHS CAUSED BY THE ACCUMULATED ASH.
• Never use chemicals or gasoline to start or maintain your fire.
• Do not burn oil, garbage, trash, plastic, or any fuel other than wood or coal in your furnace. Doing so will void the
warranty.
• DO NOT operate your furnace with the fuel bypass rod open; the handle must be pushed all the way in (except
when refueling).
• DO NOT leave the ash pan inside your furnace during operation.
WARNING: – RISK OF FIRE
• DO NOT operate with flue draft exceeding .08 water column inches (19.9 Pa).
• DO NOT store fuel or other combustible materials within marked installation clearances.
• Inspect and clean flues and chimney regularly.
• DO NOT operate your furnace with the fuel or ash doors open.
WARNING: NEVER fuel your furnace with wet, unseasoned wood or wood that has been exposed to a recent rainfall. Burning wood with
high moisture content will cause a rapid accumulation of hazardous creosote, which has been proven to be the most common cause of
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flue fires. NEVER burn plastics, any wood product containing glue, or wood treated with chemical preservatives in your furnace. The
combustion of these substances may release harmful, toxic gases.
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 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.
• A ventilation system is installed in the house.
BURN WOOD AND COAL ONLY!
First Wood Fire:
Set the wall thermostat to 90°F. Check to make sure the spin draft is wide open to allow oxygen into the firebox. Make sure the switch for
the draft blower is in the ON position. Adjust slide cover on draft blower to an opening of approximately ⅜ inches.
slide cover to
make adjustment
OPEN
CLOSE
Place several crumpled newspapers on the grate with some dry kindling layered on top of the papers, then ignite the newspaper. When
the kindling is burning, add several small pieces of wood, allow wood to fully ignite. After about 20 minutes the fire should be established,
allowing you to add more wood – do not overload which would smother the fire. Add more wood slowly, so the flames have time to engulf
the fresh wood. Once the fire is burning and there is a glowing ember bed, adjust the draft to achieve desired burn pattern. Learning how
to adjust the draft to maintain the desired temperature for your home may take several days. After a short time you will know which settings
and adjustments work best for your home. Set the wall thermostat to the desired home temperature.
Do not over-fire the furnace. Over-firing by overloading/over fueling the furnace causes the metal to superheat and expand, then cool
rapidly, which causes cracking, therefore voiding the warranty. Over-firing or abuse can easily be determined upon inspection.
It will take about 40 minutes to establish a bed of hot embers. Once you have achieved the hot ember bed, add larger pieces of firewood
and push the bypass rod in all the way. Within 30 to 40 minutes, adjust the spin draft and the damper to obtain optimum performance.
Finally adjust the wall thermostat and draft blower cover to a comfortable setting. Ash pan must remain out of furnace during operation.
NOTE: Your new Shelter Furnace is capable of producing a very high BTU output. Do not fuel your furnace to capacity upon initial firing.
It’s recommended that you become thoroughly familiar with your Shelter Furnace before 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
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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, but if your burn cycle is significantly less, for instance, 2 to 4 hours, you
are over-firing your furnace. This type of occurrence is usually symptomatic of heat demands in excess of furnace capacity. Contact an
authorized professional to determine if your Shelter Furnace has been improperly sized for your home.
Loading Wood:
When opening the fuel door during operation, always pull the bypass rod all the way out before opening the fuel door, wait 10 seconds
after releasing the first latch, then open the door the rest of the way. The dual latch system has been incorporated as a safety feature,
designed to eliminate the possibility of gaseous ignition. Laboratory testing has determined that when incomplete combustion occurs
the partially spent fuel sometimes concentrates large amounts of potentially hazardous gases within the fire chamber. If the door is
opened suddenly under these conditions, the oxygen may combine with these gases and cause ignition referred to as “back flash.” Use
EXTREME CAUTION when opening the fuel door.
When reloading the furnace, spread embers evenly over the grate. Place smaller pieces of wood or coal on the hot embers and layer
larger pieces on top of them. Finally, due to the wide variety of temperature ranges during the winter, you may experience periods when
it is not necessary to fully load the fire chamber in order to maintain an overnight burn. Your Shelter Furnace will operate at the highest
efficiency by adding fuel in amounts needed to maintain comfortable temperatures in your home.
Starting the First Coal Fire:
Burning coal is much harder than burning wood. There is more care and work in building and maintaining a coal fire than a wood fire.
Anthracite is the best coal to burn, due to its long even burn with higher heat output and clean burn quality but is more difficult to manage
than Bituminous coal.
The size of coal is important. “Nut” coal sizes of 4 inches for Bituminous and 2¾ to 4½ inches for Anthracite coal are recommended.
Never use coal other than the sizes recommended. If the coal is too small it will smother the fire and if it is too large the coal will not burn
well.
When burning Bituminous coal, start the fire with wood (as described above). Always use dry kindling, as this will provide a hotter fire
and add small pieces of wood until you get a good hot ember bed. At this point add a small amount of coal. When the coal is hot enough
to ignite, add small amounts at a time, so as not to smother the fire. Keep in mind that Bituminous coal will require more maintenance as
this type of coal will produce more soot, requiring more frequent cleaning to prevent buildup.
Also make sure that the spin draft is wide open to establish the correct burn pattern. When adding coal to Bituminous fires always add
coal to the center of the bed creating the cone effect. Bituminous coal is more volatile and adding coal to the center of the bed causes
the flames to drive off the volatile gases. Remember that no two installations and chimney set-ups are the same, so be prepared to
experiment until you achieve the desired results. Always allow enough air to the firebox and keep the damper open so that volatile gases
are properly burned. When adding fuel, remember to break up the cone with a poker if it has formed a crust, but be careful to avoid
mixing the coal as this can form clinkers. Shake the grates a couple times so as not to disturb the fire. Excessive shaking wastes fuel
and exposes the grate to extreme heat, which will cause warping or burnout. For overnight burn operations, follow the above instructions
and adjust the chimney damper and set the thermostat.
When burning Anthracite coal, start the fire with wood (as described above). Add layers of coal making sure not to smother the fire,
the third layer should be a little heavier, but should not to extend above 2 inches below the top of the brick in the firebox. Before
adding more fuel, be sure to leave a red spot in the center of the bed. This hot spot will help ignite the gases given off the new charge.
A deep charge will give a more even heat and a longer fire. It may take up to a couple hours before the whole bed is fully ignited. When
the fire is established and the home is becoming warm, you may adjust the damper. It may still take some experimenting with the wall
thermostat to ensure proper operation, as no two installations are the same. Once the coal bed has reduced to half its original depth it is
time to add fuel to the furnace. At this point pull out the bypass rod and turn up the wall thermostat. This will allow the fire to burn off the
accumulated gases. Open the fuel door, using a small rake or hoe pull the coals towards the front of the bed, trying not to disturb the fire
too much. Next, add coal to the back, being careful not to seal off the top. Only shake the grates a couple times a day to allow the ash
to fall into the ash pan. Keep the ash pan cleaned out to ensure good airflow. You may want to start this banking process early in the
evening before retiring or before leaving the home so that you may make proper adjustments after the fire is well established.
WARNING: It is unsafe to load any type of coal within 2 inches of the top of the firebrick. Load fuel carefully or damage may result.
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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.
BURN WOOD AND COAL ONLY!
Disposal of Ashes:
Heat resistant gloves are recommended. In order to remove ashes from your Shelter Furnace, open the ash door and slide the ash
pan to the rear of the furnace. Remove the ash pan from the furnace and dump the ashes 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 disposal. If the ashes are disposed of by burial in soil or otherwise locally dispersed, they should be retained in the closed
metal container until all cinders have thoroughly cooled.
The ash pan must be removed from your Shelter Furnace during operation. This precautionary measure is recommended because
if the ash pan is allowed to remain inside the furnace during operation, it will become dangerously hot to touch, block the flow of air under
the grates and reduce the efficiency of the furnace.
Remove the ashes from your Shelter Furnace at least once a day, or as often as necessary to ensure the ashes do not accumulate to
the height of the grates. If ash build-up occurs at grate level, it will cause premature failure of the grate system, voiding the warranty on
the grates. Unacceptably high temperatures will result because the ashes have restricted the flow of cooling air beneath the grates. This
flow of air was designed to not only cool the grates, but to also provide warmed air for better combustion. If the ash level is improperly
maintained the firebox will be starved of combustion air, greatly reducing the efficiency and heat output of your Shelter Furnace.
CAUTION: HOT SURFACES. KEEP CHILDREN AWAY. DO NOT TOUCH DURING OPERATION.
IMPORTANT: FOR TECHNICAL SUPPORT OR CUSTOMER SERVICE
ISSUES, DO NOT RETURN TO THE STORE (THE STORE DOES NOT HAVE
REPLACEMENT PARTS), CALL SHELTER FURNACE AT 1-800-875-4788.
Draft Blower:
The front draft blower plays an important role in the operation of your Shelter Furnace. When the wall thermostat calls for heat, the draft
motor turns on and supplies fresh air into the firebox producing a hotter fire, which in turns provides more heat in the heat chamber. The
heat is then sent through the duct system throughout your home. When the wall thermostat temperature is met, the draft blower shuts off
until the thermostat calls for heat, beginning the cycle again. The draft blower has a slide cover located on the side of the motor that is
factory preset, with an opening of approximately 3/8”. The cover should be fully closed only when there is a power failure and electricity
is lost. With the cover closed, no air is introduced into the firebox, then the fire dies, preventing the furnace from possible overheating
and damage. The manual combustion air spin damper control on the ash door should be set with a 1/8 inch gap. To begin, adjust slowly
by making 1 rotation at a time to find the correct air setting.
Important: Blower Speed Changes:
Your FC500, FC700 or FC1100 furnace is equipped with a 3 speed high efficiency bearing shaft motor (started with a capacitor) that
draws a maximum of 5 amps when set at high speed. The 3 speed switch on your electrical control center allows you to manually adjust
speeds to your desired setting.
If you are unable to detect or hear the speed change when you move the switch selector to a different setting it doesn’t mean
the blower motor didn’t change speeds.
Most blower motors that are manufactured today are sleeve shaft motors that don’t have any bearings so the motor creates more
variation in sound. Your motor has bearings so it runs very smoothly and quietly.
The furnace needs to be connected to ductwork to have significant resistance (static pressure) against the blower so it will operate at full
power. If you are running the blower without a fire in the furnace, the speeds will be different than when you have a fire burning. Hot air
flows through the ductwork with less resistance than cold air.
13
Creosote Formation and Need for Removal:
When wood is burned slowly, it produces compounds in exhaust smoke, which combine with expelled moisture to form creosote. The
creosote vapors condense in the relatively cooled chimney flue of a slow burning fire. As a result, creosote residue accumulates on the
flue lining. When ignited, this creosote makes an extremely dangerous fire in the chimney. The chimney connector and the chimney
should be inspected at least twice monthly during the heating season to determine if a creosote build-up has occurred. If creosote has
accumulated it should be removed to reduce risk of a chimney fire.
Creosote Prevention:
To help reduce 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 quantity of creosote in the chimney. If the flue gas temperature
falls below 212°F, condensation occurs causing creosote formation and accumulation within the chimney.
As an added precaution, periodic chimney inspections are recommended during the heating season to determine if creosote formation
has occurred. For safety and efficiency, it is recommended that the chimney system be inspected and cleaned prior to each heating
season.
Chimney Fire Warning:
In the event of a chimney fire, take the following actions immediately:
• Activate and toss a Chimfex™ Dry Chemical Chimney Fire Extinguisher into the firebox.
• Close the ash door, fuel door, spin draft and slide cover on the draft motor.
• Alert entire household and prepare to evacuate if necessary.
• Call your local fire department.
Power Failure:
In case of power failure, to prevent your Shelter Furnace from over-heating and causing damage to the electrical components, follow
these steps:
• Ensure that the bypass rod is pulled out, allowing heat to go up the chimney.
• Close the spin damper control on the ash door.
• Close the slide cover on the side of the draft motor.
• Do NOT add more fuel (coal or wood) to the firebox.
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 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).
• Do not operate with fuel loading or ash removal doors open.
• Do not store fuel or other combustible material within marked installation clearances.
• Inspect and clean flues and chimney regularly.
THIS IS A WOOD AND COAL BURNING FURNACE ONLY AND SHOULD NOT BE
ALTERED IN ANY WAY.
14
Furnace Diagram
PARTS LIST
QTY
DESCRIPTION
1
ASH DOOR ASSEMBLY
12
13
11
1
ASH PAN TRAY
1
FAN SHIELD BRACKET
1
DRAFT BLOWER
1
FURNACE SHELL
1
RIGHT SIDE PANEL
1
1
1
ELECTRICAL CONTROL
CENTER
FAN LIMIT CONTROL
FILTER BOX
1
SMOKE SLIDE DAMPER
1
BLOWER ASSEMBLY
1
TOP PANEL
1
SMOKE DAMPER ROD
1
LEFT SIDE PANEL
1
FAN SHIELD
4
1
DOOR HINGE PIN
FUEL DOOR ASSEMBLY
1
AIR CONTROL DAMPER KNOB
14
10
9
15
8
16
17
7
5
4
3
18
1
6
2
PARTS LIST
ITEM
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
15
TOTAL
QUANTITY
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
4
1
1
ITEM DESCRIPTION
Ash Door Assemply
Ash Pan Tray
Draft Blower Shield Bracket
Draft Blower
Furnace Shell
Right Side Panel with Insulation
Electrical Control Center
Fan Limit Control
Filter Box
Smoke Slide Damper
Blower Assembly
Top Panel
Smoke Bypass Rod
Left Side Panel with Insulation
Draft Blower Shield
Door Hinge Pin
Fuel Door Assembly
Spin Draft
COMMON ITEM SF2626 ITEM SF2631 ITEM SF2639 ITEM
NUMBERS NUMBERS
NUMBERS
NUMBERS
SFFDA
FC5AP
FC7AP
FC11AP
SFBMB
ECC
FCFLC
FCFB
FC000-15
FC3SPMOTOR
SFBMS
FCDP
SFFDA
FCSD
FC5SHELL
SF26RA
SF26TOP
FC5DR
SF26LA
FC7SHELL
SF31RA
SF31TOP
FC7DR
SF31LA
FC11SHELL
SF39RA
SF39TOP
FC11DR
SF39LA
-
-
-
Grate System Diagram - SF2626
5hw.1
5hw.3
5hw.2
6
SF2626 PARTS LIST
ITEM
7 & 7a
PART NUMBER
ITEM DESCRIPTION
SFSCH
Handle Shaker Control
1
1hw.3
IS25HLN
Screw .25-20 NC x 1 HH
1
1.hw.2
ISHH25
Nut .25-20 NC Lock Hex
1
1.hw.1
CP13
Cotter Pin
2
2
SFCBL
Control Bar Link Shaker
1
3
SFCB3
Control Bar Shaker 3
1
3hw.1
ISHH25
Nut .25-20 NC Lock Hex
3
3hw.2
IS25HLN
Screw .25-20 NC x 1 HH
3
4
SFSR3
Cast Rail 3 Slot
1
5
FCRCP
Back Plate
1
5hw.1
FC4344CH2
Screw .44-14 NC x 2.75 HCS Z
2
5hw.2
FC43WSAE
Washer .44 USS Flat
2
5hw.3
FC43NF
Nut .44-14 NC Hex Z
2
6
SFSG
Cast Grate Shaker
1
7
HTFB
Firebrick 9.00 x 4.50 x 1.25
8
7a
HTFB5
Firebrick 9.00 x 3.50 x 1.25
2
8
SFFP
Front Plate
1
8hw.1
FC3716CH2
Screw .38-16 NC x 1.00 HCS Z
2
8hw.2
FC3720WF
Washer .38 x 1.25 USS Fender
2
8hw.3
FC37NF
Nut .38-16 NC Hex Z
2
1
5
8hw.3
8
8hw.2
8hw.1
4
3hw.2
3hw.1
1
3
1hw.3
2
TOTAL QTY
1hw.2
1hw.1
Grate System Diagram - SF2631
5hw.1
PARTS LIST
QTY
DESCRIPTION
1
SHAKER HANDLE
1
CONTROL BAR LINK
1
CAST REAR PLATE
4
SHAKER GRATE
12
1
FIRE BRICK
FRONT PLATE
1
CONTROL BAR
2
CAST RAIL
5hw.2
5hw.3
7
SF2631 PARTS LIST
6
ITEM
PART NUMBER
ITEM DESCRIPTION
SFSCH
Handle Shaker Control
1
1hw.3
IS25HLN
Screw .25-20 NC x 1 HH
1
1.hw.2
ISHH25
Nut .25-20 NC Lock Hex
1
1.hw.1
CP13
Cotter Pin
2
2
SFCBL
Control Bar Link Shaker
1
3
SFCB3
Control Bar Shaker 3
1
3hw.1
ISHH25
Nut .25-20 NC Lock Hex
3
3hw.2
IS25HLN
Screw .25-20 NC x 1 HH
3
4
SFSR3
Cast Rail 3 Slot
1
5
FCRCP
Back Plate
1
5hw.1
FC4344CH2
Screw .44-14 NC x 2.75 HCS Z
2
5hw.2
FC43WSAE
Washer .44 USS Flat
2
5hw.3
FC43NF
Nut .44-14 NC Hex Z
2
6
SFSG
Cast Grate Shaker
1
7
HTFB
Firebrick 9.00 x 4.50 x 1.25
12
8
1
5
4b
8hw.3
8hw.2
8
8hw.1
3hw.2
3hw.1
1
TOTAL QTY
SFFP
Front Plate
1
8hw.1
FC3716CH2
Screw .38-16 NC x 1.00 HCS Z
2
8hw.2
FC3720WF
Washer .38 x 1.25 USS Fender
2
8hw.3
FC37NF
Nut .38-16 NC Hex Z
2
3a
1hw.1
2
1hw.2
1hw.3
16
Grate System Diagram - SF2639
5hw.2
5hw.1
SF2639 PARTS LIST
5hw.3
6
ITEM
PART NUMBER
ITEM DESCRIPTION
SFSCH
Handle Shaker Control
1
1hw.3
IS25HLN
Screw .25-20 NC x 1 HH
1
1.hw.2
ISHH25
Nut .25-20 NC Lock Hex
1
1.hw.1
CP13
Cotter Pin
2
2
SFCBL
Control Bar Link Shaker
1
3
SFCB3
Control Bar Shaker 3
1
3hw.1
ISHH25
Nut .25-20 NC Lock Hex
3
3hw.2
IS25HLN
Screw .25-20 NC x 1 HH
3
4
SFSR3
Cast Rail 3 Slot
1
5
FCRCP
Back Plate
1
5hw.1
FC4344CH2
Screw .44-14 NC x 2.75 HCS Z
2
5hw.2
FC43WSAE
Washer .44 USS Flat
2
5hw.3
FC43NF
Nut .44-14 NC Hex Z
2
6
SFSG
Cast Grate Shaker
1
7
HTFB
Firebrick 9.00 x 4.50 x 1.25
16
8
1
7
5
8hw.3
8hw.2
8
8hw.1
4b
1
1
1
TOTAL QTY
SFFP
Front Plate
1
8hw.1
FC3716CH2
Screw .38-16 NC x 1.00 HCS Z
2
8hw.2
FC3720WF
Washer .38 x 1.25 USS Fender
2
8hw.3
FC37NF
Nut .38-16 NC Hex Z
2
3b
2
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
1
3
PARTS LIST
4
17
ITEM
PART NUMBER
ITEM DESCRIPTION
1
FCBW
Blower Wheel
TOTAL QTY
1
2
FCBH
Blower Fan and Housing
1
3
FC3610J370
Motor Capacitor
1
4
FC3SPM
Blower Motor
1
WIRING DIAGRAM
Wiring Diagram
INDOOR FURNACE
B
B
FAN LIMIT CONTROL
ORANGE
YELLOW
WALL
THERMOSTAT
BLACK
YELLOW
RED
RED
RED
RELAY
3 SPEED SWITCH
120V AC/24V AC
TRANSFORMER
RED (LOW)
DRAFT MOTOR
ON/OFF SWITCH
120V AC
POWER SUPPLY
A
WHITE
BLACK
BLACK (HI)
3 SPEED BLOWER
MOTOR
DRAFT BLOWER
MOTOR
2
A
WHITE
BLACK
GREEN
BLUE (MED)
1
18
Troubleshooting
1.
2.
3.
Problem: Circulation blower runs constantly. NOTE: Make sure the white button on fan
limit control is pulled out and in the “auto” position.
Possible Causes:
• “Off”setting on fan limit control is
low.
•
White button on fan limit control
is pushed in.
•
Pull white button out and the blower should stop.
•
Defective fan limit.
•
Check by moving “ON” and “OFF” point indicator to a temperature
position where blower should turn off. If the blower continues to run,
replace the fan limit.
•
Improper wiring.
•
Review wiring diagram. If unit is wired correctly, seek professional
assistance.
•
Backdraft damper is in the
“closed” position.
•
Open backdraft damper.
Problem: Circulation blower vibrates during operation.
Possible Causes:
• Screw on squirrel cage is not
tight.
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. If you are unsuccessful, contact your supplier.
•
Defective main bearings.
•
Return the blower to your supplier for replacement.
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.
Remedies:
• Always open the door cautiously and allow the safety latch system
to perform its designed function, containing gases within the fire
chamber.
•
Bypass rod is in the “CLOSED”
position.
•
Pull out bypass rod.
•
Cast iron damper in the
“CLOSED” position.
•
Open damper.
•
Insufficient natural draft or an
obstruction in the flue system.
Fire chamber filled to capacity
with unburned fuel.
•
See #6 and #9.
•
Do not attempt to overload the furnace.
•
19
Remedies:
• Remove cover on fan limit control and check for the proper setting.
The point indicators should be set at 100° “Off” and 150° “On.”
Do NOT attempt to adjust the fan limit by manually adjusting the
temperature indicators on the dial.
4.
5.
6.
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 rocker switch on control
center.
Remedies:
• Replace rocker switch.
•
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.
•
Move switch on wall thermostat to the “HEAT” position.
•
Defective relay in transformer.
•
Replace relay.
•
Defective draft motor.
•
Replace draft motor.
•
Improper wiring.
•
Review wiring diagram. If unit is wired correctly, seek professional
assistance.
Problem: Excessive dirt accumulation surrounding air registers in the home.
Possible Causes:
• Smoke discharge from loading
door while refueling.
Remedies:
• Always pull exhaust bypass rod completely forward before opening
fuel door.
•
Furnace is not connected to
return air duct and is drawing
dirt from furnace room floor and
disbursing it throughout home.
•
Connect to return air duct system.
•
Filter box not installed, or no filter
in filter box.
•
Install filter box on furnace. Install filter in filter box.
Problem: Smoke from the fire chamber is puffing back through the forced draft motor.
Possible Causes:
• Furnace is not connected to
return air and is drawing smoke
fumes from the flue.
Remedies:
• Connect to return air duct system. Or room may be too airtight, refer
to “Location and Installation” section on page 3.
•
Excessively long run of stove
pipe from furnace to flue.
•
Relocate the furnace so the horizontal run does not exceed 5 feet
and has a 2 inch rise per foot.
•
Too many elbows.
•
The run should not contain more than 2 elbows.
•
Insufficient flue size.
•
Replace with a larger flue providing a minimum of 50 square
inches but not more than 100 square inches of draft area. If the
flue is within these specifications, check the draft with a draft gage
(manometer). Your flue should provide a minimum of .04 water
column inches and a maximum of .08 water column inches.
20
7.
8.
21
Problem: Draft blower runs constantly.
Possible Causes:
• Defective wall thermostat.
Remedies:
• This can be checked by turning the thermostat to a lower setting
than the temperature in your home. If the draft blower continues to
run, the thermostat may be defective. Replace if necessary.
•
Defective relay in transformer.
•
Replace transformer and relay.
•
Home is not being supplied with
a sufficient amount of heat to
satisfy the wall thermostat.
•
Have a professional determine the proper size furnace and
insulation factor of your home.
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
thermostat to call for more heat more often, which will initiate the
running of the draft blwoer. Consequently, the fires will be hotter,
thereby reducing the accumulation of creosote.
•
Under-firing the furnace has
caused low flue gas temperature.
•
Install flue gas thermometer and maintain stack temperatures
between 300° and 400° F.
•
Insufficient chimney draft.
•
See #9.
•
Using uninsulated stove pipe
for the chimney, especially if the
construction is on the exterior of
the home.
•
DANGER: Never use uninsulated stove pipe as chimney. It must not
be used on the inside of your home due to high stack temperatures,
which create an extreme fire hazard. 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.
•
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.
•
Furnace room may be too airtight to supply sufficient amount of
oxygen for combustion. Install an aperture to the outside consisting
of a minimum of 12 square inches or 4 inches round.
•
Use of an unlined masonry
chimney with a large clay tile
opening.
•
Install stainless steel liner in masonry chimney to reduce creosote
formation and improve draw. Use appropriate size stainless liner for
the furnace.
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. Correct or repair as
needed, or replace or re-line the chimney.
•
There is an obstruction outside
chimney, such as a tree.
•
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. Utilize
chimney cleaning device to remove any obstruction or foreign
matter.
•
Excessive ash accumulation.
•
Remove as necessary.
10.
Problem: Excessive smoke discharge from fuel door during reloading.
Possible Causes:
• Exhaust bypass rod is in
“CLOSED” position.
Remedies:
• Always pull the exhaust bypass rod completely out before opening
the loading door.
•
Cast iron damper in the
“CLOSED” position.
•
Open damper.
•
Excessively long stove pipe run
from furnace flue.
•
See #6.
•
Too many elbows.
•
See #6.
•
Insufficient draft.
•
See #6.
•
Excessive smoke accumulation.
•
See #9.
22
11.
12.
23
Problem: Odor detected in home during initial firing.
Possible Causes:
• There is an oily film that remains
on the steel after the manufacturing process. Firing the
furance has raised the temperature of the fire box to a level that is
sufficient to vaporize the residue.
Remedies:
• The odor should disappear after a few hours of usage.
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.
•
Check and replace filter. Proper filter size is 20” by 25” by 1.”
•
Combustion chamber not
receiving an adequate amount
of oxygen.
•
Furnace room may be too airtight. Install an aperature to the outside
consisting of a minimum of 12 square inches or 4 inches round.
•
Inadequate insulation of the
home.
•
Provide additional insulation.
•
Furnace size is inadequate for
your home.
•
Consult a professional to determine correct sizing.
•
Slide cover on draft blower is
“CLOSED.”
•
Open slide cover.
•
Fueling furnace with wet or
unseasoned wood.
•
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 initate the running of the draft
blower. Consequently, the fires will be hotter, thereby reducing the
accumulation of creosote.
•
Ash pan is in the furnace,
resulting in an insufficient air flow
for combustion.
•
Remove ash pan and store under furnace during operation.
13.
Problem: Bugs found in wood.
Possible Causes:
• Wood has rotted or has been
laying around for an extended
period of time.
14.
15.
Remedies:
• Inspect the wood for obvious signs of insect infestation such as
burrows or holes, avoid using if possible. Do not store wood indoors.
Problem: Circulation blower will not turn on.
Possible Causes:
• Defective fan limit control.
Remedies:
• 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.
•
Defective capacitor.
•
Replace capacitor.
•
Defective blower.
•
Contact your supplier for replacement.
•
Improper wiring.
•
Review wiring diagram. If wired correctly, seek professional
assistance.
Problem: Cannot hear or detect changes in blower motor speed.
Possible Causes:
• Your motor has bearings so it
runs smoothly and quietly.
Remedies:
• Refer to information in the manual on page 13 to understand the
operation of the blower motor.
24
Warranty Information
CERTIFICATE OF LIMITED WARRANTY:
EXTENT OF COVERAGE: This warranty covers any Shelter Furnace SF2626, SF2631, and SF2639 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.
Replacement or repair parts are warrantied for the remaining period of the original warranty.
All warranty claims must include:
• Date of purchase
• Model and serial number
• Proof of purchase (dated invoice, bill of sale, cancelled check, or payment record)
• The name / address of the store from which you purchased the furnace
Shelter Furnace warranties the firebox and cast iron grates to be free of defects in material and workmanship for 5 years. Intentional
misuse or abuse causing burn through of the cast iron components voids all warranties. Over firing the furnace will cause the front
face to crack and is not covered by the warranty. Furthermore, some aesthetic deterioration can be expected as the result of normal
operation, therefore the physical appearance is not guaranteed to remain unchanged. The manufacturer warranties all electrical
components for 1 year. Please be advised that the firebrick and door gaskets are excluded 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 Shelter Furnace detailing an assessment of the problem. This assessment MUST be accompanied
by substantiating proof of purchase (dated invoice, bill of sale, cancelled check, or payment record), model and serial number. Shelter
Furnace will then authorize repair or replacement as appropriate to the submitted claim. Shelter Furnace will not honor expenses
incurred from any action that was not expressly consented to in writing. The owner is hereby notified that he or she will be obligated
to assume liability for removal, reinstallation, shipping, and labor costs involved in servicing/repairing or replacing the part or unit. The
merchandise in question must be shipped via PREPAID FREIGHT to Shelter Furnace. Shelter Furnace will return the repaired or
replacement part to the purchaser on a FREIGHT COLLECT basis.
This warranty will be rendered null and void if this part/unit exhibits symptoms of obvious over-firing, deliberate abuse or negligence,
improper installation, or is used for commercial purposes.
Finally, Shelter Furnace will not be responsible for any claim not stated in our warranty nor does any implied warranty extend beyond the
limits stated above.
Please contact Shelter Furnace with all pertinent information including daytime phone number and detailed description of the type of
problem you are having. Shelter Furnace technical service personnel will contact you as soon as possible. Call 1-800-875-4788 or mail
information to: Shelter Furnace, 10950 Linpage Place, Saint Louis, MO 63132.
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