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S
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L
H
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MODEL 1321
Owners Manual
SOLID FUEL WARM AIR FURNACE
ASSEMBLY
INSTALLATION
OPERATION
REPAIR PARTS
CAUTION
IMPROPER INSTALLATION
MAY VOID YOUR WARRANTY
SAVE THIS MANUAL FOR
FUTURE REFERENCE
READ ALL INSTRUCTIONS CAREFULLY
BEFORE STARTING THE INSTALLATION
OR OPERATING THE FURNACE
FOR PARALLEL INSTALLATION WITH EXISTING AIR, GAS OR OIL FIRED FURNACE
OR FOR INSTALLATION AS A CENTRAL FURNACE
DO NOT USE THIS FURNACE IN A MOBILE HOME OR TRAILER
UNITED STATES STOVE COMPANY
WARNOCK HERSEY
227 Industrial Park Rd., P.O.Box 151
S
C
South Pittsburg, TN 37380
U S
R
(423) 837-2100
P
851153A 10/96
CAUTION LABELS
Your Furnace has the following labels. Read and obey all labels.
DANGER: RISK OF FIRE OR EXPLOSION
DO NOT burn garbage, gasoline, drain oil, or other flammable liquids.
WARNING: FIRE HAZARD
DO NOT operate with fire draft exceeding .06 inches w.c.
DO NOT operate with fuel loading or ash removal doors open.
DO NOT store fuel or other combustible material within the marked
installation clearances.
DO NOT store fuels, paints, thinners, flammable liquids, or other highly
volatile substances in the furnace room.
CAUTION: HOT SURFACES
Keep children away.
Do not touch during operation
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.
3
Rules for safe installation and operation
Read these rules and the instructions carefully. Failure to follow them will cause a hazard that
could result in death, serious bodily injury, and/or property damage.
1. Check your local codes. The installation must comply with their rulings.
2. Do not install this furnace in a mobile home or trailer.
3. Always connect this furnace to a chimney and vent to the outside. Never vent to another
room or inside a building.
4. Do not connect this furnace to an aluminum Type B gas vent. This is not safe and is pro-
hibited by the National Fire Protection Association Code. This furnace requires a masonry
or listed factory built chimney for residential type or building heating appliance chimney.
Use a 6" diameter chimney or larger, that is high enough to give a good draft,(See Page 8)
5. Be sure to use a masonry chimney that it is safely constructed and in good repair.
Have the chimney inspected by the Fire Department or an inspector.
6. Inspect chimney connector and chimney before and frequently during the heating season
for any deposit of creosote or soot which must be removed (See Chimney Maintenance,
page 18).
7. Provide air for combustion into the room where the furnace is located. If the intake is not
in the same room, air must have free access to the room.
8. CAST IRON PARTS MUST BE "SEASONED" TO AVOID CRACKING. BUILD ONLY
SMALL FIRES ON FIRST USE.
9. To prevent injury, do not allow anyone to use this furnace who is unfamiliar with the
correct operation of the furnace.
10. For further information on using your furnace safely, obtain a copy of the National Fire
Protection Association (NFPA) publication "Chimneys, Fireplaces, and Solid Fuel Burning
Appliances" NFPA 211. The address of the NFPA is Batterymarch Park, Quincy, MA
02269.
11. Keep the ash pit section free of excess ashes. Do not allow ashes to stack higher than
the sides of the ash pan.
12. DISPOSAL OF ASHES - Place ashes in a metal container with a tight fitting lid. Keep the
closed container on a noncombustible floor or on the ground, well away from all combus-
tible materials. Keep the ashes in the closed container until all cinders have thoroughly
cooled. The ashes may be buried in the ground or picked up by a refuse collector.
13. CAUTION - The special paints used on your furnace may give off some smoke while they
are curing during the first few fires. Build small fires at first. The metal used in construc-
tion of the furnace and duct work has a light coating of oil. This could give off smoke and/
or odors from registers when furnace is used for the first time. This should disappear after
a short period of time. Once this burn-off has occurred, it should not reoccur.
14. CARING FOR PAINTED PARTS - This furnace has a painted outside jacket, which is
durable, but it will not stand rough handling or abuse. When installing your furnace, use
care in handling. Clean with soap and warm water when furnace is not hot. DO NOT use
any acids or scouring soap, as these wear and dull the finish. DISCOLORATION WILL
OCCUR IF THE FURNACE IS OVERFIRED, FOLLOW OPERATING INSTRUCTIONS
CAREFULLY.
15. Keep the feed and ash doors closed at all times, except while tending the furnace.
Your furnace is designed to be installed in a parallel air flow arrangement with a gas or oil- fired forced
air flow - type central furnace, or it may be installed as a central furnace.
4
How The Furnace Functions
YourModel1321Furnaceisdesignedto PARALLEL INSTALLATION: The design is
be a supplemental or central heating source for suchthatwhentheblowercomeson,theblower
your home. This solid fuel furnace may be will only come on when the temperature in the
installed in conjunction with a properly operat-
ing central furnace that is listed or certified in
accordance with nationally recognized safety
standards and equipped with the required con-
plenum has reached the setting on the blower
control. This is to insure that there is sufficient
warmairinthesystemtomakeitefficientforthe
unit to operate. When the central system ther-
trols and other safety features and which has mostat calls for heat, the central system will
been installed in accordance with appropriate operate by the burner igniting and the blower
standards of the National Fire Protection Asso-
ciation with installation clearances specified in
coming on. It is possible that both systems will
operate simultaneously. It is recommended
the furnace nameplate marking. The installa- that for the most efficient use of your Supple-
tionmustbeaccomplishedbyaqualifiedagency
(one who is engaged in, and is responsible for,
or is thoroughly familiar with the installation and
operation of the gas, oil, and solid fuel burning
mental Furnace, that it be fired as much as
possible in order to reduce the demand on your
existing central heating system.
TheWarmairsupplyoutletoftheSupple-
heating appliances, who is experienced in such mentary Furnace shall not be connected to the
work, familiar with all precautions required, and
has complied with all the requirements of the
authority having jurisdiction.) The installation
shall be in strict accordance with the
manufacturer'sinstallationinstructionsfurnished
with the solid fuel furnace.
cold air return inlet of the central furnace be-
cause the possibility exists of components of
thecentralfurnaceoverheatingandcausingthe
centralfurnacetooperateotherthanisintended.
CENTRAL FURNACE INSTALLATION: As a
The chimney connector of the furnace is centralfurnace,theunitfunctionsindependently
tobeinstalledtoprovideclearancestocombus- of any other system. The blower will come on
tible material not less than specified in the
individual classifications and marked on the
furnace. The chimney connector must be con-
nected to a chimney suitable for use with resi-
dentialtypeorbuildingheatingapplianceswhich
burn solid fuel.
when the plenum temperature reaches the set-
ting on the blower control.
The Model 1321 Furnace is designed to
operate in a parallel air flow arrangement with
an existing central furnace or as a central fur-
nace. The furnace is designed to operate in
either of the following installations:
5
1321
DIMENSIONS
Shown in Fig. 1 are the dimensions of the furnace.
37 5/8
Fig. 1
22 5/16
28 3/4
2
34
36 5/8
6
18"
Locating the Furnace
1. The furnace should be located in the
same room as the central system and as
close as possible, but not closer than 9".
There should be no wall between the
furnace and the warm air outlet duct that is
connected directly to the warm air outlet
plenum of the central furnace.
CENTRAL
FURNACE
12"
9"
See Fig. 2.
Fig. 2
48"
2. The unit will require installation with the
following clearances:
Unittosidewall....................................12"
Unit to backwall..................................30"
Chimney connector pipe to sidewall
.........................................................21"
Chimney connector pipe to backwall
.........................................................18"
Hot air ducts to combustibles................6"
18"
NOTE: Install only on a noncombustible
floor. (REFER TO FIG. 2 & 3)
6" SOLID DAMPER
3. Place the furnace on a noncombustible
floor.
6" BAROMETRIC
DRAFT REGULATOR
(OPTIONAL)
4. Check figures 2 and 3. Be sure you
have the clearances shown from the fur-
nace and the connector pipe to combus-
tible surfaces. If you have a solid brick or
stone wall behind your heater, you can
place the furnace as close as you wish to
the wall. If the wall is only faced with brick
or stone, treat it as a combustible wall.
18"
Fig. 3
NON-COMBUSTIBLE FLOOR
7
18" MIN. CLEARANCE FROM
FROM CEILING TO TOP OF
CONNECTOR
THIMBLE
6" ELBOW
6" SOLID DAMPER
6" BAROMETRIC
DRAFT REGULATOR
(OPTIONAL)
6" CHIMNEY
CONNECTOR
NON-COMBUSTIBLE
WALL
6" ELBOW
Chimney Connection
Fig. 4
MASONRY CHIMNEY
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 furnace. See page 4, item 5. Look at Fig. 4.
The connector pipe and fittings you will need to connect directly to a masonry chimney are shown.
The chimney connection should be as short as possible.
If the connector pipe must go through a combustible wall before entering the masonry chimney,
consult a qualified mason or chimney dealer. The installation must conform to local fire codes, and
N.F.P.A. 211.
DO NOT CONNECT THIS FURNACE TO A CHIMNEY FLUE SERVING ANOTHER APPLI-
ANCE.
The chimney used for a furnace 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.
REFER TO CHIMNEY
2' MIN.
MANUFACTURER'S
INSTRUCTIONS AND
PARTS.
10'
3' MIN.
6" SOLID DAMPER
6" BAROMETRIC
DRAFT REGULATOR
(OPTIONAL)
6" CHIMNEY CONNECTOR
6" ELBOW
Fig. 5
LISTED FACTORY BUILT CHIMNEY
Carefully follow chimney manufacturer's instructions. Use only a Listed Residential Type or
Building Heating Appliance Chimney. If your chimney starts at the ceiling (Fig. 5), 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. 5).
8
Rules for Connector
Pipe Installation
1. The crimped end of the chimney connector fits
inside the furnace flue collar. Install additional chim-
ney connectors and elbow with the CRIMPED END
TOWARD THE FURNACE. This will allow any
condensation in the flue to run back into the furnace.
Use 6" dia. steel pipe and elbows for connection to
chimney. Never use less than 24 gauge and al-
though blued steel is satisfactory, high temp painted
black is much more desirable.
2. Slope any horizontal pipe upward toward the
chimney at least 1/4 inch for each foot of horizontal
run.
RIGHT
WRONG
WRONG
3. You must have at least 18 inches of clearance
between any horizontal piping and the ceiling.
(See Fig. 3)
Fig. 6
4. The chimney connector must not extend into the
chimney flue. (See Fig. 6)
5. Seal each chimney connector pipe joint with fur-
nace cement. Also seal the pipe at the chimney.
6. Use 3 sheet metal screws at each chimney pipe
joint to make the piping rigid.
7. The chimney connector may include a section for
abarometricdraftregulatorbetweenthefurnaceand
the chimney (fig. 4,5, &7). The barometric draft
regulator must be installed in the same room (same
pressure zone) as the furnace.
NON-COMBUSTIBLE
INSTALLATION PER
NFPA 211
8. Install the barometric draft regulator strictly in
accordance with the instructions that are provided
with the barometric draft regulator.
9. A solid damper must be used in the chimney
connecting pipes between the flue collar and the
chimney. When used in conjunction with a baromet-
ric draft regulator, the solid damper must be placed
between the barometric and the chimney. (See Fig.
4,5,7)
6" SOLID DAMPER
6" BAROMETRIC
DRAFT REGULATOR
(OPTIONAL)
MEASURE FLUE
DRAFT HERE
Adjusting the Barometric Draft Regula-
tor
Fig. 7
1. Drill a hole in the chimney connector within 18" or
the flue collar below the barometric draft regulator
just large enough for the tube of the manometer.
2. Build a fire after all chimney connections have
been made.
3. Use a manometer to measure the draft in the flue,
(U. S. Stove Model DG-26).
4. Adjust the Barometric Draft Regulator to obtain a
draftof0.05-0.06"W.C. understablefireconditions.
9
Assembly of Furnace
Your furnace requires the following items to be assembled or installed by the service person:
BLOWER AND BLOWER CONTROLS
ELECTRICAL CONNECTIONS
1.Removeallpartsfrominsidethefurnaceandinspectfordamage. Includingthefirebrick,assome
damage could have occurred during shipment.
2. Place base assembly in area where furnace will be installed, and place furnace on base as
shown in Figure 8. Be certain furnace fits inside tabs as shown.
3. Install Honeywell Fan/Limit Control on rear of cabinet as shown in Fig. 8.
NOTE: Remove cover of Fan/Limit control for access to screw holes.
4. Remove blower from carton and inspect for damage. Remove cover from 4" junction box on rear
of furnace. (See Fig. 8)
5. Attach clip nuts to blower opening on rear of furnace as shown. Install blower and gasket using
1/4-20x3/4" bolts provided.
6. Completeallwiringin4"junctionboxbyreferencetowiringdiagram, Fig. 9, Page11. Afterwiring
is completed, remember to replace junction box cover.
Fig. 8
Honeywell
FAN/LIMIT
CONTROL
4" ELECTRICAL
JUNCTION BOX
BLOWER
ASSEMBLY
CLIP NUTS
NOTE: DO NOT USE CLIP NUT OR BOLT
ON UPPER CENTER HOLE
GASKET
10
Model 1321 Wiring Diagram
LOAD
FAN
LINE
LOAD
LIMIT
LINE
FAN "OFF"
INDICATOR
LIMIT
INDICATOR
BREAK OFF
JUMPER FOR
LOW VOLTAGE
FAN "ON"
INDICATOR
Honeywell
LIMIT SWITCH
R2
R1
WIRE COLOR CODE
G- GREEN- GROUND
B- BLACK- POWER SUPPLY
W- WHITE- POWER SUPPLY
R1- WHITE- FAN CONTROL
R2- BLACK- FAN CONTROL
M1- BLACK- FAN CONTROL
M2- WHITE- BLOWER MOTOR
GROUND
G
POWER
CORD
G
B
W
110
VAC,
60
W
HZ.
ELECTRICAL JUNCTION BOX
M2
M1
BLOWER
MOTOR
IMPORTANT: POWER SUPPLY WIRING MUST NOT BE LESS THAN 90 CENTIGRADE.
Fig. 9
11
Installation
Please see all methods of Installation in
Appendix at the rear of this booklet.
Pipe to combustible:
Sides: 21"
Back: 18"
The installation must be made only on a noncom-
bustible floor.
This is a furnace, not a free standing stove.
Youmustdirectheatedairfrom8"outletsawayfrom
the furnace, or it will not function properly.
d) Install the smoke pipe connector to the chim-
ney with 26-gauge pipe and elbows (to be pur-
chased separately), maintaining the proper clear-
ances for the specific model. Seal the spoke pipe in
the chimney with furnace cement. (The chimney
connector shall be securely supported, and joints
fastened with sheet metal screws or rivets.)
e) Install 8" diameter heat pipe to plenum of the
central hot air furnace. Use 26-gauge pipe and
connectors (to be purchased separately). (See Fig.
14) If central air conditioning is installed in the
plenum, install heat pipe above the air conditioning
unit. Secure heat pipe connection with supports
and sheet metal screws.
f) Connect electrical supply in the electrical junc-
tion box that is mounted on the back of the Model
1321 Furnace. See Wiring Diagram (Fig. 12 or Fig.
13). Remove the cover from electrical junction box
and connect power supply wires to wires desig-
nated, using wire nuts. The power cord supplied
may be used for installation, if permitted by local
codes and regulations. If the power cord supplied
cannot be used, the power supply wiring must be 90
degrees centigrade in a metal cable and should be
completed by a qualified installer complying with
NFPA Standard No. 70 and local codes.
1. This installation must be done by a qualified
heating equipment installer.
2. The installation is to be done in compliance with
NationalFireProtectionAssociationinstallationstan-
dards: No. 89M, 90B, 211, 70 (National Electrical
Code) and Uniform Mechanical Code 913, 6-4, in
the states where applicable. (Their code offers
connecting smoke pipe connectors into chimney
with other fuel burning appliances.)
3. Rooms large in comparison with size of the
appliance:
a)Wood or Coal Burning Furnace needs air for
combustion and circulation to house.
b) Provision must be made to make up this air
and not starve gas or oil furnace of combustion air.
c) Have "Authority Having Jurisdiction" deter-
mine that air is of adequate makeup. (Reference
N.F.P.A. Nos. 30&54, Code for Installation of Gas &
Oil Equipment).
4. Have"AuthorityHavingJurisdiction"istoinspect
all chimneys and installations for adequate venting
and for compliance with standard and local codes
and regulations regarding installation of wood burn-
ing appliances.
g) Optional Plenum Fan Control Switch (Part No.
11PCS) is available for installation on the plenum of
central hot air heating furnace. The purpose of this
switch is to activate the circulating fan of the central
hot air heating furnace when the temperature in the
plenum exceeds 120 degrees F., and shut off the
fan when the temperature in the plenum is reduced
to 100 degrees F. This avoids overheating the
plenum.
5. Installation for Supplemental Heat Application to
Existing Central System. (See Fig. 2 for typical
installation.)
a) Place Wood or Coal Burning Furnace so that
the chimney connector will be as short as practi-
cable and avoiding unnecessary sharp turns in the
smoke pipe connector and the installation of de-
vices that would create excessive resistance to the
flow of flue gases.
The electrical supply for operation of this fan
control switch is to be obtained from the same
electrical supply as the central hot air heating sys-
tem. (See Fig. 14) Follow the instructions of the
wiring diagram (Fig. 5) Do not make connections
across Limit Control in the furnace.
b) Locate the Wood or Coal Burning Furnace as
close as practical to the existing central hot air
heating system, maintaining clearances as stated
on the label on the fuel door.
c) Clearance from combustible materials must
comply with those stated on the label on the fire
Make electrical wire connections in accordance
with NFPA Standard No. 70 and local codes in the
power supply junction box (See Fig. 15). The wiring
to complete the connections should be 18 AWG
minimum copper and 90 degrees centigrade in a
cable.
door:
Unit to combustible:
Front: 48"
Back: 30"
Sides: 12"
Ceiling: 62"
12
Repair Parts List Model 1321
KEY
1
2
3
4
5
6
7
8
PART NO.
24147
24148
88032
40246
22761
24149
68950
68944
68952
89066
40076
24151
22245
67743
24146
89577
40091
40220
24142
89574
24152
67444
22108
21467
83045
83250
21047
83243
24180
83362
22171
83086
83250
68229
83339
83340
89319
80154
80145
80231
80232
68231
68232
24165
DESCRIPTION
CabinetSide
Cabinet Back Panel
Flue Collar Gasket
FlueCollar
QNTY.
2
1
1
1
1
1
1
1
1
10
2
1
1
1
1
1
1
1
1
1
1
1
1
2
2
1
1
1
1
3
2
3
3
1
FlueCollarRing
CabinetTopPanel
FireboxWeldment
FeedDoorAssembly(40340)
Ash Door Assembly (40289)
Firebrick
Grate
ThermostatCover
DamperDoor
Thermostat Assembly
CabinetBottom
DoorHandle(FeedDoor)
DoorHandle(AshDoor)
FrontFireboxLiner
SmokeCurtain
BrassSpringHandle
DamperDoorPin
Ash Pan
9
*
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
*
*
*
*
*
*
*
*
*
*
*
*
*
DoorLatch
LatchSpacer
5/16" I.D. Washer
1/4 - 20 Kep Nut
FeedDoorLatch
7/16 - 20 Nut
Air Deflector
10 - 24 Machine Screw
Smoke Curtain Bracket
1/4 - 20 x 3/4 MS SL FL
1/4 - 20 Kep Nut
Blower Motor Assembly
1/4 - 20 x 3/4 Bolt
1/4 - 20 J-Clip
5
5
1
1
1
1
1
1
BlowerGasket
Cord Strain Relief Bushing
BlowerLimitControl
Junction Box Cover
PowerSupplyCord
Limit Control Conduit Assembly
Blower Conduit Assembly
Baffle
1
1
30
13
14
18" MIN.
2" MIN. AIR SPACE
REQUIRED BY CODE
CENTRAL
FURNACE
Fig. 10
Power Failure Instructions:
Operation after loss of power--
1. Remove filter if provided
2. Do not expect to keep home at normal temperatures.
3. Do not load fuel above bottom of feed door.
2
15
Central Installation
COLD AIR DUCT
6" PIPE
90 ELBOW
DAMPER
OPTIONAL
11 RPT
PIPE
CONNECTOR
FURNACE
Fig. 11
Add-On Installation
COLD AIR DUCT
8" PIPE
6" PIPE
90 ELBOW
DAMPER
PIPE
CONNECTOR
FURNACE
EXISTING GAS/OIL/ELECTRIC FURNACE
FIG. 11-B
16
Operating Instructions
ADJUSTINGBLOWERLIMITCONTROLSET-
TINGS
FUEL, MODEL 1321
Hardwood, 18" to 26" should be split and air
dried (seasoned) for 6 months.
The temperature in the plenum of the warm air
furnaceatwhichtheblowerturnsonorturnsoff,
is controlled by the setting of the pointers in the
blower limit control. (See Fig. 12) These point-
ers may be adjusted to achieve the desired
warm air output from the furnace. (See Fig. 12
Below)
LIGHTING
1. Set the thermostat on "HIGH" for maximum
draft.
2. Open the feed door and place paper and
kindling on the grate for starting the fire.
3. Light fire and close feed door.
4. Add wood after fire is burning briskly. Be
careful not to smother the kindling fire.
5. Set thermostat for desired temperature.
"MEDIUM" setting is normally satisfactory. Set
higher or lower for your comfort.
ADDING FUEL
1. Movingbothpointerstowardtheright(counter
clockwise)- this increases the temperature set-
ting at which the blower will turn on and off.
2. Moving both pointers toward the left (clock-
wise)-thisdecreasesthetemperaturesettingat
which the blower will turn on and off.
When starting a fire, use small amounts of fuel.
This will allow for more complete combustion
and less build-up of tars or soot in the chimney.
1. Set thermostat to HIGH before opening feed
door.
3. Moving the pointers away from each other
will increase the time that the blower will run on
each warm air cycle.
2. Wood Fire-Model 1321- Add wood to a
convenient level.
CAUTION!
DO NOT OPERATE WITH THE FEED AND/
OR ASH DOOR OPEN. THIS FURNACE IS
DESIGNED FOR THERMOSTATIC OPERA-
TION. OPERATION WITH ANY OF THESE
DOORS OPEN WILL OVERHEAT AND DAM-
AGE THE FURNACE.
BLOWER FAN
"OFF" POINTER
BLOWER FAN
"ON" POINTER
CAUTION!
NEVER USE GASOLINE, GASOLINE-TYPE
LANTERN FUEL, KEROSENE, CHARCOAL
LIGHTER FLUID, OR FLAMMABLE LIQUIDS
TO START OR "FRESHEN UP" A FIRE IN
THE FURNACE.
BLOWER LIMIT
POINTER & STOP
Fig. 12
WARNING!
NEVER STORE FLAMMABLE LIQUIDS, ES-
PECIALLY GASOLINE, IN THE VICINITY OF
THE FURNACE.
17
Service Hints
If the chimney is operating too cool, water
will condense in the chimney and run back
into the furnace. Creosote formation will be
rapid and may block the chimney. Operate
the furnace at a high enough fire to keep the
chimney warm, preventing this condensa-
tion.
Do not expect a furnace to draw. It is the
chimney that creates the draft. Smoke spillage
into the house or excessive build-up of water or
creosote in the chimney are warnings that the
chimneyisnotfunctioningproperly. Correctthe
problembeforeusingfurnace. Possiblecauses
are:
4.
5.
If the fire burns well, but sometimes smokes
or burns slowly, it may be caused by the
chimney top being lower than another part
of the house or a nearby tree. The wind
blowing over a house or a tree, falls on top
of the chimney like water over a dam, beat-
ingdownthesmoke. Thetopofthechimney
should 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. 5).
1. The connector pipe may be pushed into the
chimney too far, stopping the draft (Fig. 6)
2. Do not connect two furnaces or a stove and
furnace into the same chimney flue.
3. The chimney used for a furnace 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.
6.
See page 19 for list of trouble shooting tips.
A draft reading of .05 to .06 w.c. is suggested for proper burning of this unit when using
wood.
Chimney Maintenance
Creosote and Soot - Formation and Need for Removal
When wood is burned slowly, it produces tar
and other organic vapors, which combine with
expelled moisture to form creosote. The creo-
sote vapors condense in the relatively cool
chimney flue of a slow-burning fire. As a result,
creosote residue accumulates on the flue lin-
ing. When ignited, this creosote makes an
extremely hot fire.
If creosote or soot has accumulated, it should
be removed to reduce the risk of a chimney fire.
Chimney fires burn very hot. If the chimney
catches fire, immediately call the fire depart-
ment, thenreducethefirebyclosingtheinletair
control. Pour a large quantity of coarse salt,
baking soda or cool ashes on top of the fire in
the firebox.
When coal is burned, the products of combus-
tion combine with moisture to form a soot resi-
duewhichaccumulatesonthefluelining. When
ignited, this soot makes an extremely hot fire.
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 per-
son before using again.
The chimney should be inspected at least twice
monthly during the heating season to deter-
mineifacreosoteorsootbuilduphasoccurred.
18
Trouble Shooting Tips for Warm Air Furnace
LIST OF PROBLEMS
POSSIBLE CAUSE
SOLUTIONS
1. Smoking when feed door is
open.
a) Insufficient Draft.
b) Clogged chimney or chimney
connector.
a) Set thermostat higher.
b) Clean chimney.
c) Add raincap to chimney.
c) Down draft in chimney
2. Furnace does not heat.
3. Blower does not run.
a) Wood not seasoned and dry.
a) Allow wood to season in a dry,
well ventilated area for 6 mo.
b) Set blower control to higher
temperatures.
b) Blower control set too low.
c) Insufficient flue draft.
c) Set flue draft. (See page 9)
a) Improperly wired.
b) Bad blower control.
c) Bad relay.
a) Wire unit properly.
b) Replace blower control.
c) Replace relay.
d) Bad blower motor.
d) Replace blower.
4. No air from registers-
fan running.
a) Registers are closed.
a) Open registers.
b)Correctductworkinstallations.
c) Wire unit properly.
b) Duct work improperly installed.
c) Improper wiring between cen-
tral furnace and Model 1303.
5. Air from registers is not hot.
6. Blower runs too long.
a) Blower control is set too low.
b) Bad blower control.
a) Adjust blower control to
higher setting.
b) Replace blower control.
a) Blower control cut-off set too
low.
a) Set blower control cut-off
to higher setting.
7. Blower does not run long
enough.
a) Blower control cur-off set too
high.
a) Set blower control cut-off to
lower setting.
b) Bad blower motor.
b) Replace blower.
8. Smoke and/or odor from
registers when furnace is
used for first time.
Oil from furnace and duct work.
The metal used in construction
of the furnace and duct work has
a light coating of oil. This should
disappear after a short period of
time. Once this burn-off has oc-
curred, it should not reoccur.
9. Creosote build-up.
a) Burning green wood (not
seasoned or dry).
a) Burn only seasoned wood.
b) Thermostat setting too low for
type fuel.
b) Set thermostat higher to at-
tain higher flue temperatures.
10. Flame spillage when feed
door is open.
a) Insufficient draft.
b) Smothering fire when adding
fresh fuel.
a) Set thermostat higher.
b) Add fuel so as not to
smother fire.
19
APPENDIX
INSTALLATION A
TO EXISTING
DUCT WORK
COLD AIR
RETURN
WARM AIR
EXISTING
FURNACE
FILTER BOX
MODEL 1321
FURNACE
NOTE:
INSTALL GRAVITY-TYPE BACKDRAFT DAMPERS IN THE 8" ROUND HEAT
OUTLET PIPES FOR SUPPLEMENTARY INSTALLS.
NOTE:
COMBINED STATIC PRESSURE IN OUTLET PLENUM MUST NOT EXCEED
0.25 INCHES WATER COLUMN WITH BOTH FURNACE'S FANS RUNNING.
20
INSTALLATION B
PLENUM
COLLECTOR BOX
TO EXISTING
DUCT WORK
COLD AIR
RETURN
WARM AIR
EXISTING
FURNACE
FILTER BOX
MODEL 1321
FURNACE
INSTALLATION C
PLENUM ELBOW
TO EXISTING
DUCT WORK
COLD AIR
RETURN
WARM AIR
PLENUM TOP
(OPTIONAL)
EXISTING
FURNACE
FILTER BOX
MODEL 1321
FURNACE
21
INSTALLATION D
DUCT
WORK
2" MINIMUM
CLEARANCE
11 PCS
(OPTIONAL PLENUM
FAN CONTROL LOCATION)
COLD AIR
RETURN
FURNACE PLENUM
EXISTING FURNACE
ANTI-BACKDRAFT
FLAPPER
SOLID FUEL
FURNACE
INSTALLATION E
DUCT
WORK
2" MINIMUM
CLEARANCE
BAFFLE
COLD AIR
RETURN
FURNACE PLENUM
EXISTING FURNACE
SOLID FUEL
FURNACE
22
INSTALLATION F
DUCT
WORK
2" MINIMUM
CLEARANCE
COLD AIR
RETURN
FURNACE PLENUM
EXISTING FURNACE
SOLID FUEL
FURNACE
INSTALLATION G
DUCT
WORK
2" MINIMUM
CLEARANCE
CENTRAL
FURNACE
INSTALLATION
COLD AIR
RETURN TO
FILTER BOX
SOLID FUEL
FURNACE
23
OWNERS MANUAL
HOW TO ORDER REPAIR PARTS OR "OPTIONS"
THIS MANUAL WILL HELP YOU TO OBTAIN EFFICIENT, DEPENDABLE
SERVICEFROMTHEFURNACE, ANDENABLEYOUTOORDERREPAIR
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 FRONT OF THE FURNACE.
WHEN ORDERING REPAIR PARTS OR OPTIONS, ALWAYS GIVE THE
FOLLOWING INFORMATION AS SHOWN IN THIS LIST:
1. The PART NUMBER
2. The PART DESCRIPTION
3. The MODEL NUMBER: 1321
4. The SERIAL NUMBER
BEFORE INSTALLING YOUR HEATER, FILL IN THE SERIAL
NUMBER IN THE SPACE PROVIDED ABOVE FOR YOUR
RECORDS.
UNITED STATES STOVE COMPANY
227 Industrial Park Rd., P.O. Box 151
S
C
South Pittsburg, TN 37380
(423) 837-2100
U S
P
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