United States Stove Automobile Alarm 2421 User Manual

O w n e r s Ma n u a l  
Logwood 2421  
EPA EXEMPT PER  
METHOD 28A  
TESTED TO  
UL 1482  
CAUTION!  
Read All Instructions Care-  
fully Before Starting The In-  
stallation or Operating This  
Heater.  
DO NOT USE THIS HEATER  
IN A MOBILE HOME OR TRAILER  
SAVE THIS MANUAL FOR FUTURE REFERENCE  
THIS MANUAL WILL HELP YOU TO OBTAIN EFFICIENT, DEPENDABLE SERVICE FROM THE HEATER, AND ENABLE  
YOU TO ORDER REPAIR PARTS CORRECTLY. KEEP IN A SAFE PLACE FOR FUTURE REFERENCE.  
UNITED STATES STOVE COMPANY  
227 Industrial Park Road  
P.O. Box 151  
S
C
U S  
South Pittsburg, TN 37380  
(423) 837-2100  
P
851094D  
 
Safety Rules  
SAFETY NOTICE: If this heater is not properly installed a house fire may result. For your safety, follow the  
installation directions. Contact local building or fire officials about restrictions and installation inspection  
requirements in your area.  
Read these rules and the instructions carefully.  
1.  
Check with local codes. The installation comply  
with their rulings. Observe closely the clearances  
to combustibles (page 4).  
9.  
For further information on using your heater  
safely, obtain a copy of the National Fire Pro-  
tection Association (NFPA) publication "Using  
Coal and Wood Stoves Safely" NFPA No. HS-  
10-1978. The address of the NFPA is  
Batterymarch Park, MA 02269.  
2.  
3.  
Do not install this heater in a mobile home or  
trailer.  
Alwaysconnectthisheatertoachimneyandvent  
to the outside. Never vent to another room or  
inside a building.  
10.  
Disposal of Ashes- Place ashes in a metal  
container with a tight fitting lid. Keep the closed  
container on a non-combustible floor or on the  
ground, well away from all combustible mate-  
rials. Keep the ashes in the closed container  
until all cinders have thoroughly cooled. The  
ashesmaybeburiedinthegroundorpickedup  
by a refuse collector.  
4.  
Do not connect a wood burning heater to a Type  
B gas vent. This is not safe and is prohibited by  
the National Fire Protection Association Code.  
This heater requires approved masonry or UL  
Listed Residential Type and Building Heating  
Appliance Chimney. Use a 6" diameter chimney  
or larger, that is high enough to give a good draft.  
11.  
12.  
CAUTION- The special paints used on your  
heater may give off some smoke while theyare  
curing during the first few fires. Build small fires  
at first.  
5.  
Be sure that your chimney is safely constructed  
and in good repair. Have the chimney inspected  
by the Fire Department or a qualified inspector.  
Your insurance company may be able to recom-  
mend a qualified inspector.  
CARING FOR PAINTED PARTS- This heater  
has a painted jacket, which is durable but it will  
not stand rough handling or abuse. When  
installing your heater, use care in handling.  
Clean with soap and warm water when heater  
is not hot. DO NOT use any acids or scouring  
soap, as these wear and dull the finish. PAINT  
DISCOLORATION WILL OCCUR IF THE  
HEATER IS OVERFIRED. FOLLOW OPER-  
ATING INSTRUCTIONS CAREFULLY.  
6.  
7.  
8.  
Inspect chimney connector and chimney twice  
monthly during the heating season for any de-  
posit of creosote or soot which must be removed  
(see Chimney Maintenance, page 9).  
Provideairforcombustionfromoutsidethehouse  
into the room where the heater is located. If the  
intake is not in the same room, air must have free  
access in to the room.  
13.  
14.  
All persons, especially children, should be  
alerted to hazards from high surface tempera-  
tures and kept away while in operation. Small  
children should not be left unsupervised when  
in the room with the heater.  
To prevent injury, do not allow anyone to use this  
heater who is unfamiliar with the correct opera-  
tion of the heater.  
Keep the area adjacent to the heater free from  
all combustible materials, gasoline, and other  
flammable vapors.  
CAUTION! Do not touch the heater until it has cooled.  
NOTE:  
FOR YOUR SAFETY, WE RECOMMEND INSTALLING SMOKE DETECTORS IN YOUR HOME IF NOT  
ALREADY INSTALLED.  
3
 
MINIMUM CLEARANCE  
TO COMBUSTIBLE WALLS  
Installation  
Place the heater on solid masonry or solid concrete. When  
the heater is used on a combustible floor, use an Underwrit-  
ers Listed floor protector. The floor protector must comply  
with UL Standards.The base should extend at least 16"  
beyond the door of the heater and should extend under the  
flue pipe if it is elbowed towards a wall  
18"  
458mm  
(Fig. 5).  
(60" MIN.)  
1.  
2.  
Uncrate and/or unpack the heater, removing all pack-  
ing material, being careful not to dispose of the Parts  
Bag.  
Open the front feed door and remove the parts from  
inside the stove. You should find the following: Hearth  
Plate (1); Solid Damper (1); Lids (2); Pivoting Top (1);  
Lid Support (1); Parts Package (1) containg nuts,  
bolts, door handle, door latch and securing harware;  
Legs (4); Cast Iron Collar (1); Cast Iron Damper (1);  
Baffle Assembly (1); Lid Lifter (1).  
28"  
712mm  
37-1/2"  
953mm  
26"  
660mm  
34"  
865mm  
FIG. 2  
FIG. 3  
20"  
508mm  
28"  
712mm  
FLOOR  
PROTECTOR  
FLOOR  
PROTECTOR  
3.  
Place cardboard or other soft material adjacent to the  
stove and carefully turn the stove onto its top side  
(bottom facing up).  
HEATER/FLOOR PROTECTOR LOCATION  
(Dimensions are required for non-protected surfaces.  
4.  
5.  
Attachhearthplatetothefrontofthestoveinitsproper  
location.  
See chart for dimensions for protected surfaces.)  
BACK WALL  
Attach both rear and front legs to the stove. Tighten  
the nuts and bolts securely. The stove may now be  
CAREFULLY turned over to stand on its four legs.  
Attach the baffle assembly and flue collar to the stove  
by inserting the baffle studs thru the two holes located  
on the top of the rear of the stove; place the flue collar  
over the studs and mount using the proper nuts and  
washers. Place lid support and lid in position on  
pivoting top. Place the slide damper in position on the  
top of the hearth plate and under the feed door, and  
secure with screw in slot.  
After consulting the installation instructions for mini-  
mum clearances to combustibles, locate your floor  
protector accordingly and carefully place the stove in  
your selected location. Install stove pipe, elbows and  
thimbleasnecessary,utilizingeitherarecentlycleaned  
and inspected masonry chimney (properly lined) or a  
UL Listed chimney. Insure that the damper provided  
is installed in the flue collar.  
Again, check the following illustrations and be sure  
you have the clearances shown from the heater and  
the connector pipe to combustible surfaces. If you  
have a solid brick or stone wall behind your heater,  
you may place your heater as close as you wish to the  
wall. However, if the wall is only faced with brick or  
stone, consider it a combustible wall.  
If your chimney drafts excessively, purchase and use  
a Barometric Draft Regulator (DR6 available from  
factory).  
DASHED LINES  
SHOW STRAIGHT  
OUT CHIMNEY  
CONNECTOR  
NON- COMBUSTIBLE  
CONSTRUCTION IN  
ACCORDANCE WITH  
NFPA 211  
6.  
7.  
8.  
34"  
865mm  
26"  
660mm  
28-3/4"  
730mm  
6"  
153mm  
60"  
FLOOR  
PROTECTOR  
16"  
407mm  
FIG. 4  
6"  
153mm  
6"  
153mm  
28"  
204mm  
Protected Surfaces (NFPA 211)  
Parallel  
Side  
Corner  
Rear  
9.  
12-inches  
305-mm  
12-inches  
305-mm  
12-inches  
305-mm  
10.  
The chimney connection should be as short as pos-  
sible, and the heater must have its own flue. Do not  
connect this unit to a chimney flue serving other  
appliances.  
CAUTION!  
11.  
Use three sheet metal screws in each stove pipe and  
or elbow joint to firmly hold the pipe together.  
Do not install this heater in a mobile home or trailer.  
Check your local building and insurance codes. The  
installation must comply with their rulings.  
KEEP FURNISHINGS AND OTHER  
COMBUSTIBLE MATERIALS  
AWAY FROM THE HEATER.  
12.  
13.  
4
 
Operation of the Heater  
FLUE CONNECTION-NON-COMBUSTIBLE WALL  
1. BE SURE TO PUT A LAYER OF SAND OR FIREBRICK  
APPROXIMATELY 1 1/2" THICK IN THE BOTTOM OF THE  
STOVE BEFORE STARTING FIRE.  
NON-COMBUSTIBLEWALL  
2. Burn wood or wood products only. The wood should be air  
dried for at least six months prior to use for maximum effi-  
ciency.  
3. After the fire has been started and is burning satisfactorily,  
adjust the rate of burning by opening or closing the draft  
damper wheel on the feed door.  
THIMBLE  
COLLAR  
PIPE  
ELBOW  
4. Never build extremely large fires in this type of heater as  
damage to the heater or smoking may result.  
BAROMETRIC  
DRAFT REGULATOR  
5. Provide air into the room for combustion.  
6. Do Not touch the heater after firing until it has cooled.  
7. Do Not use a grate or elevate fire, build fire directly on hearth.  
8. The fuel feed door must remain closed during operation.  
PIPE  
FIG. 5  
Chimney Connection  
MASONRY CHIMNEY  
The masonry chimney must comply with UL codes. Before using  
an existing masonry chimney, clean the chimney and inspect the  
flue liner to be sure it is safe to use. Make repairs before attaching  
the heater. See Page 3, Item 5. Look at Fig. 6. The connector pipe  
and fittings you will need to connect directly to a masonry chimney  
are shown. If the connector pipe must go through a combustible  
wall before entering the masonry chimney, consult a qualified  
masonor chimney dealer. The installation must conform to local fire  
codes. Do not connect this heater into the same chimney flue as  
the fireplace or flue from another heater.  
FLOOR REGULATOR  
CHIMNEY CAP MANDATORY  
2 FT. MIN.  
3 FT. MIN.  
10 FT.  
The chimney used for a heater must not be used to ventilate the  
cellar or basement. If there is a cleanout opening at the base of the  
chimney, close it tightly.  
UL LISTED CHIMNEY  
PIPE REDUCER  
Carefully follow chimney manufacturer's instructions. Use only listed  
type HT per UL 103, 6-in diameter black or blued chimney connector,  
minimum 24 gauge steel. If your chimney starts at the ceiling (Fig. 7),  
you will need enough 6" pipe to reach the ceiling.  
The top of the chimney must be at least 3 feet above the roof and be  
at least 2 feet higher than any point of the roof within 10 feet. (Fig 6)  
11 FT. MINIMUM  
NON-COMBUSTIBLE  
CONSTRUCTON IN  
ACCORDANCEWITH  
BAROMETRIC  
DRAFT REGULATOR  
PIPE  
NFPA 211  
RULES FOR CONNECTOR PIPE INSTALLATION  
FIG. 6  
1. Crimped end of the pipe must be installed toward the heater.  
The pipe should slide into the flue collar. The pipe should be  
firmly attached to the flue collar with 3 screws and sealed with  
furnace cement.  
FLOOR PROTECTOR  
2. Slope any horizontal pipe upward toward the chimney at least  
1/4 " inch for each foot of horizontal run.  
3. You must have at least 18" inches clearance between any  
horizontal piping and the ceiling. (Fig. 4)  
4. The pipe cannot extend into the chimney flue.(Fig. 8)  
5. Seal each connector pipe joint with furnace cement. Also seal  
the pipe at the chimney.  
6. Use 3 sheet metal screws at each joint to make the piping rigid.  
7. It is recommended that no more than two (2) 90 degree bends  
be used in the stove pipe installation as more than two (2) may  
decrease the amount of draw and possibly cause smoke  
spillage.  
RIGHT  
WRONG  
WRONG  
FIG. 7  
NOTE: The chimney connector shall not pass through an  
attic, roof space, floor, ceiling, or similar concealed space.  
Where passage through a wall or partition of combustible  
construction is desired, the installation must conform with  
NFPA 211.  
5
 
CONNECTION OF CHIMNEY CONNECTOR TO A MASONRY CHIMNEY THROUGH A COMBUSTIBLE WALL  
Figure 8 shows how to connect the chimney connector of a heater to a masonry chimney through a combustible wall.  
There are five allowable ways that a chimney connector can be connected to a masonry chimney by passing through  
a combustible wall. NFPA Standard 211 allows the following wall pass-through systems.  
FIGURE 8 -  
CONNECTION OF CHIMNEY CONNECTOR TO A  
MASONRY CHIMNEY THROUGH A COMBUSTIBLE  
WALL  
CEILING  
SEE PARTS A, B,  
C, D, AND E OF  
THIS FIGURE FOR  
OPTIONS.  
CHIMNEY CONNECTOR  
MASONRY CHIMNEY  
CONSTRUCTED TO  
NFPA 211  
TO  
HEATER  
COMBUSTIBLE WALL  
FLOOR  
PROTECTOR  
AIRTIGHT  
CLEANOUT  
DOOR  
(FIGURE 8 CONTINUED ON NEXT PAGE)  
6
 
PART A, FIGURE 8  
(FIGURE 5 CONTIUED ON NEXT PAGE)  
MINIMUM CHIMNEY CLEARANCE TO  
BRICK AND COMBUSTIBLES IS 2 IN.  
MINIMUM CLEARANCES 12 IN.  
OF BRICK ALL AROUND  
CHINEY CONNECTOR TO  
HEATER  
FIRE CLAY LINER  
MINIMUM 12 IN.  
(5/8" MIN. WALL THICKNESS)  
TO COMBUSTIBLES  
MASONRY CHIMNEY  
CONSTRUCTED TO  
NFPA 211  
MIN. 3-1/2" THICK BRICK  
MASONRY WALL  
1. Use a minimum 3-1/2" thick brick masonry wall framed into the combustible wall. A fireclay liner (ASTM C315 or  
equivalent) having a 5/8" minimum wall thickness must be used and it must be at least 12" away from any material  
that could catch fire. The inside diameter of the fireclay liner shall be sized for the proper snug fit of a 6" diameter  
chimney connector pipe. The fireclay liner shall run from the outer surface of the brick wall to, but not beyond, the  
inner surface of the chimney flue and shall be firmly cemented in place. See Part A of Figure 8.  
2. Use a solid insulated listed factory-built chimney length having an inside diameter of 6" and having 1" or more of  
solid insulation. There must be at least a 9" air space between the outer wall of the chimney length and any  
combustible materials. The inner end of the chimney length shall be flush with the inside of the masonry chimney  
flue shall be sealed to the flue and to the brick masonry penetration with nonwater-soluble refractory cement. Sheet  
steel supports which are at least 24 gauge(0.024") in thickness shall be securely fastened to wall  
surfaces on all sides. Fasteners between supports and the chimney length shall not penetrate the chimney liner.  
See Part B of Figure 8.  
3. Use a 10" diameter ventilated thimble made of at least 24 gauge(0.024") steel having two 1" air channels. The venti-  
lated thimble must be separated from combustible materials by a minimum of 6" glass fiber insulation. The opening  
in the combustible wall shall be covered and the thimble supported with sheet steel supports which are at least 24  
gauge (0.024") in thickness. The sheet steel supports shall be securely fastened to wall surfaces on all sides and  
shall be sized to fit and hold the chimney section. Fasteners used to secure chimney sections shall not penetrate  
chimney flue liner. See Part C of Figure 8.  
4. Use an 8" inside diameter solid insulated listed factory-built chimney length which has 1" or more of solid insulation.  
The minimum length of this chimney section shall be 12" and will serve as a pass-through for the 6" diameter  
chimney connector. There must be at least a 12" air space between the outer wall of the chimney section and any  
combustible materials. The chimney section shall be concentric with and spaced 1" away from the chimney connec  
tor by means of sheet steel support plates on both ends of the chimney section. The opening in the combustible wall  
shall be covered and the chimney section supported on both sides with sheet steel supports which are at least 24  
gauge (0.024") in thickness. The sheet steel supports shall be securely fastened to wall surfaces on all sides and  
shall be sized to fit and hold the chimney section. Fasteners used to secure chimney sections shall not penetrate  
chimney flue liner. See Part C of Figure 8.  
5. A listed factory-built wall pass-through system may be purchased and installed according to the instructions pack  
aged with it to provide a safe method of passing the chimney connector through a combustible wall for connection  
to a masonry chimney.  
Additional requirements pertaining to Figure 8 and the above wall pass-through systems:  
1. Insulation material used as part of wall pass-through system shall be of noncombustible material and shall have a  
thermal conductivity of 1.0 Btu • in./ft.² • °F (4.88 kg • cal/hr • m² • °C) or less  
2. All clearances and thicknesses are minimums: larger clearances and thickness are acceptable.  
3. A chimney thimble, as shown for 3" and 4" above (Parts C and D respectively of Figure 8) shall be for types "3" and  
4" connections to facilitate removal of the chimney connector for cleaning. The chimney thimble shall be of ASTM  
C315 fireclay with 5/8" minimum wall thickness , or material or equivalent durability. The inside diameter of the  
thimble shall be sized for the proper snug fit of a 6" diameter chimney connector pipe. The thimble shall be installed  
without damage to the chimney flue. The thimble shall extend through the chimney wall to, but not beyond, the  
inner surface of the chimney flue and shall be permanently cemented in place with high temperature cement.  
4. A chimney connector to a masonry chimney, except for 2" above (Part B of Figure 8), shall extend through the wall  
pass-through system to the inner face of the chimney flue, but not beyond. It does not have to be fastened in place  
so long as it cannot accidently be pulled out of the chimney or shoved into the chimney flue. If fasteners are used  
to secure the chimney connector to a masonry chimney, the fasteners shall not penetrate the chimney flue liner.  
5. Any material used to close up any opening for the connector shall be noncombustible.  
7
 
PART B  
FIGURE 8 -  
MINIMUM CHIMNEY CLEARANCES FROM MASONRY TO  
SHEET STEEL SUPPORTS AND COMBUSTIBLES 2 IN.  
(FIGURE 8 CONTINUED)  
FACTORY-BUILT  
CHIMNEY LENGHT  
MINIMUM CLEARANCE  
9 IN. ALL AROUND  
NONSOLUBLE  
REFACTORY  
CEMENT  
CHIMNEY CONNECTOR  
TO HEATER  
CHIMNEY LENGHT  
FLUSH WITH INSIDE  
OF FLUE  
USE CHIMNEY MFRS. PARTS TO  
ATTACH CONNECTOR SECURELY  
AIR SPACE  
9 IN. MINIMUM  
SOLID INSULATED, LISTED  
FACTORY-BUILT CHIMNEY LENGHT  
MASONRY CHIMNEY CONSTRUCTED  
TO NFPA 211  
SHEET STEEL SUPPORTS  
(24 GAUGE MIN. THICKNESS)  
PART C  
FIGURE 8  
MINIMUM CHIMNEY CLEARANCES FROM MASONRY TO  
SHEET STEEL SUPPORTS AND COMBUSTIBLES 2 IN.  
24 GAUGE  
VENTILATED THIMBLE WITH  
TWO 1 INCH AIR CHANNELS  
CHIMNEY THIMBLE  
CHIMNEY CONNECTOR  
TO HEATER  
TWO VENTILATED AIR  
CHANNELS EACH 1 INCH.  
CONSTRUCED OF  
MINIMUM 6 IN. GLASS  
FIBER INSULATION ALL AROUND  
SHEET STEEL.  
SHEET STEEL SUPPORTS  
(24 GAUGE MIN. THICKNESS)  
MASONRY CHIMNEY CONSTRUCTED  
TO NFPA 211  
MINIMUM CHIMNEY CLEARANCES FROM MASONRY TO  
SHEET STEEL SUPPORTS AND COMBUSTIBLES 2 IN.  
PART D  
FIGURE 8  
SHEET STEEL SUPPORTS  
CHIMNEY SECTION  
MINIMUM CLEARANCE  
2 IN. ALL AROUND  
1 IN. AIR SPACE TO  
CHIMNEY LENGHT  
CHIMNEY THIMBLE  
CHIMNEY CONNECTOR  
TO HEATER  
CHIMNEY  
CONNECTOR  
SOLID INSULATED, LISTED  
FACTORY-BUILT CHIMNEY  
LENGHT (12 IN. LONG MIN.)  
AIR SPACE  
2 IN.  
SHEET STEEL SUPPORTS  
(24 GAUGE MIN. THICKNESS)  
MASONRY CHIMNEY CONSTRUCTED  
TO NFPA 211  
PART E - (Figure 8)  
In addition to the methods shown by A, B, C, and D of Figure 8, a listed factory-built wall pass-through system  
may be purchased and installed according to the instructions packaged with it to provide a safe method of  
passing chimney connector through a combustible wall for a connection to a masonry chimney.  
CONNECTION OF CHIMNEY CONNECTOR TO A MASONRY CHIMNEY WHEN CHINEY CONNECTOR  
DOES NOT PASS THROUGH A COMBUSTIBLE WALL  
If the chimney connector does not have to pass through a combustible wall to get to a masonry chimney, simply connect  
the chimney connector directly to the masonry chimney's chimney thimble as described and shown by parts C and D of  
Figure 8. Remember, the chimney connector should extend into the chimney thimble to the innerface of the chimney flue  
but not beyond; if the chimnney connector is extended through the chimney thimble into the chimney flue, resistance to  
the flow of smoke and gases up the chimney will occur; that flow resistance will have an adverse affect on the operation  
and performance of the heater and venting system.  
8
 
WARNING!  
CAUTION!  
NEVER STORE FLAMMABLE LIQUIDS,  
ESPECIALLY GASOLINE. IN THE  
VICINITY OF THE HEATER.  
NEVER USE GASOLINE, GASOLINE-TYPE  
LANTERN FUEL, KEROSENE, CHARCOAL  
LIGHTER FLUID, OR FLAMMABLE  
LIQUIDS TO START OR "FRESHEN UP" A  
FIRE IN THE HEATER.  
CAUTION!  
OVERFIRING THE APPLIANCE MAY  
CAUSE A HOUSE FIRE. IF A UNIT OR  
CHIMNEY CONNECTOR GLOWS, YOU  
ARE OVERFIRING.  
CAUTION!  
USE WOOD OR WOOD-LIKE MATERIALS  
ONLY. DO NOT USE COAL OR  
CHARCOAL. COAL OR CHARCOAL WILL  
DESTROY THE FIREBOX. DO NOT USE  
DRIED LUMBER OR TREATED WOOD.  
WARNING!  
NEVER OPERATE THIS HEATER WITH THE  
FUEL DOOR OPEN.  
NOTE:  
DO NOT ELEVATE FIRE OR USE WITH A  
GRATE - BUILD FIRE DIRECTLY ON THE  
HEARTH.  
WARNING!  
USE ONLY THE LEGS PROVIDED WITH THIS  
HEATER. REFER TO STEP 5 IN THE "INSTAL-  
LATION" SECTION OF THIS MANUAL.  
WARNING!  
DO NOT OBSTRUCT THE SPACE BENEATH  
THE HEATER  
Service Hints  
Do not expect a heater to draw. It is the chimney that creates  
the draft. Smoke spillage into the house or excessive buildup  
of water or creosote in the chimney are warnings that the  
chimney is not functioning properly. Correct problem before  
using heater. Possible causes are:  
4. If the chimney is operating too cool, water will condense  
in the chimney and run back into the stove. Creosote  
formation wil be rapid and may block the chimney.  
Operate the heater at a high enough fire to keep the  
chimney warm preventing this condensation.  
1. Theconnectorpipemaypushecintothechimneytoofar,  
stopping the draft. (Fig. 7)  
5. If the fire burns well but sometimes smokes or burns  
slowly, it may be caused by the chimney top being lower  
thananotherpartofthehouseoranearbytree. Thewind  
blowing over a house or tree, falls on top of the chimney  
like water over a dam, beating down the smoke. The top  
of the chimney should be at least 3 feet above the roof  
and be at least to 2 feet higher than any point of the roof  
within 10 feet (Fig. 6).  
2. Do not connect two heaters into the same chimney flue.  
3. The chimney used for a heater must not be used to  
ventilate the cellar or basement. If there is a cleanout  
opening at the base of the chimney, It must be closed  
tightly.  
Chimney Maintenance  
Creosote - Formation and Need for Removal  
Ifcreosotehasaccumulated, itshouldberemoved. Failureto  
remove creosote may cause a house fire. Creosote may be  
removed by using a chimney brush or other commonly  
available materials.  
When wood is burned slowly, it produces tar and other  
organic vapors, which combine with expelled moisture to  
form creosote. The creosote vapors condense in the rela-  
tively cool chimney flue of a slow burning fire. As a result,  
creosote residue accumulates on the flue lining. When ig-  
nited this creosote makes an extremely hot fire.  
Chimney fires burn very hot. If the chimney connector should  
glow red, immediately call the fire department, then reduce  
thefirebyclosingtheinletaircontrolandpouralargequantity  
of coarse salt, baking soda or cool ashes on top of the fire in  
the firebox. CAUTION: A chimney fire may cause ignition of  
wall studs or rafters which you thought were a safe distance  
from the chimney. If you have a chimney fire, have your  
chimney inspected by a qualified person before using again.  
The chimney connector and chimney should be inspected at  
least twice monthly during the heating season to determine  
if a creosote buildup has occurred.  
9
 
14  
Model 2421  
Repair Parts  
12  
11  
15  
10  
21  
22  
8
5
16  
4
19  
17  
18  
1
9
20  
3
13  
2
6
7
KEY  
PART NO.  
DESCRIPTION  
QNTY.  
1
2
3
4
5
6
7
8
9
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
*
40319  
40319  
40320  
40321  
40322  
40323  
40324  
40325  
40326  
40327  
40329  
40330  
40331  
40332  
D6  
83427  
40334  
89971  
89972  
89973  
89974  
89975  
851094  
REAR LEG  
FRONT LEG  
MAIN BOTTOM  
MAIN SIDE  
MAIN BACK  
HEARTH PLATE  
2
2
1
2
1
1
1
1
1
1
2
1
1
1
1
2
1
1
1
2
1
1
1
SLIDING DRAFT PLATE  
DOOR FRAME  
DOOR  
MAIN TOP  
LID  
LID SUPPORT  
LID LIFTER  
FLUE COLLAR  
SOLID FLUE DAMPER  
DOOR PINS  
DRAFT CONTROL KNOB  
HANDLE  
LATCH  
NUTS  
HANDLE EXTENSION  
HANDLE BRACKET  
OWNERS MANUAL  
* NOT SHOWN  
10  
 
NOTES  
11  
 
HOW TO ORDER REPAIR PARTS  
THIS MANUAL WILL HELP YOU OBTAIN EFFICIENT, DEPENDABLE SERVICE FROM  
THE HEATER, AND ENABLE YOU TO ORDER REPAIR PARTS CORRECTLY.  
KEEP IN A SAFE PLACE FOR FUTURE REFERENCE.  
WHEN WRITING, ALWAYS GIVE THE FULL MODEL NUMBER WHICH IS ON THE  
NAMEPLATE ATTACHED TO THE BACK OF THE HEATER.  
WHEN ORDERING REPAIR PARTS, ALWAYS GIVE THE  
FOLLOWING INFORMATION AS SHOWN IN THIS LIST:  
1. The PART NUMBER  
2. The PART DESCRIPTION  
3. The MODEL NUMBER: 2421  
4. The SERIAL NUMBER:  
UNITED STATES STOVE COMPANY  
227 Industrial Park Road  
P.O. Box 151  
South Pittsburg, TN 37380  
(423) 837-2100  
 

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