Clayton 1602G User manual

SAFETY NOTICE:
If this furnace is not properly installed, a house re may result! For your safety, follow these installation instructions. Contact local
building or re ocials about restrictions and installation requirements in your area. is furnace must be installed by a qualied
technician. Keep these instructions for future reference.
851768C-1003G
Model: 1602G / 1802G OWNER’S
MANUAL
COAL ONLY
Gravity Style (Up-Flow) Supplemental Furnace
United States Stove Company • 227 Industrial Park Road, P.O. Box 151 • South Pittsburg, TN 37380 • www.usstove.com
Safety Tested to UL 391
U.S. Environmental Protection Agency
Certied to comply with 2015 particulate emissions standards.

2
INTRODUCTION
ank You for your purchase of a U.S. Stove Coal Burning Grav-
ity Style (Up-Flow) Furnace. Your decision to buy our Clayton
Furnace was undoubtedly reached aer much careful thought
and consideration. We are very proud you chose this furnace and
trust you will receive the comfort and economy that others real-
ize when heating with a U.S. Stove product.
IMPORTANT
Before installing and using your Clayton furnace, please read
the following pages thoroughly and carefully. If you follow the
instructions, your Clayton furnace will give you safe and more
dependable service for years to come.
• First step: Check your local codes. is installation must
comply with their rulings.
• Do Not install this furnace in a mobile home or trailer
• Always have a smoke or ionization detector and a CO detec-
tor installed in your home.
• To prevent injury or damage, do not allow anyone who is
unfamiliar with the furnace to operate it.
• is furnace must be installed ONLY in the prescribed
manner shown in illustrations 1, 2, or 3 under the Instal-
lation Examples in this manual. It is NEVER to be installed
as a counter-ow or down-dra furnace, or in any manner
wherein the heated air is directed in a downward ow into
the home or toward to an existing central furnace.
• NEVER INSTALL outside the home.
• Spend adequate time with your furnace to become well ac-
quainted with the dierent settings and how each will aect
its burning patterns. It is impossible to state just how each
setting will aect your furnace because of the variations in
each installation.
DISCLAIMER NOTICE
e BTU ranges and heating capacity specications are provided
as a guide and in no way guarantee the output or capacity of
this unit. e actual BTU output depends on the type of fuel be-
ing burned and its conditions, the thermostat setting, the dra
adjustment and the chimney to which the unit is attached. e
actual area that this unit will heat depends on factors such as
the conditions of the building, heat loss, type of construction,
amount of insulation, type of air movement, the location of the
unit and more importantly the duct work and return air facility.
Warning:
Do not alter this appliance in any way other than specied in
these instructions. Doing so may void your warranty.
LOCATING YOUR FURNACE
e furnace is to be installed maintaining the clearances speci-
ed in the following illustrations. Do not place the furnace di-
rectly on a combustible oor. If you are placing it on a combus-
tible oor, an approved re retardant material, equivalent to 3/8”
UL Listed millboard, should be placed under the unit. e mate-
rial must extend at least 16 inches beyond the front of the unit
and 8 inches on either side of the fuel loading door opening. It
must also extend underneath the chimney connector and to each
side of the connector by at least 2 inches.
CLEARANCES
REDUCED CLEARANCES
NFPA guidelines and most codes permit reduced clearances to
combustible walls and ceilings if adequate protection is added.
A common mistake is to assume that sheet metal, masonry, or
millboard placed directly against a wall protects it. Materials
installed in this manner actually provides very little protection.
ese materials are good heat conductors, so they will be almost
as hot on their back side as they are on the exposed side. ere-
fore, the combustible wall behind is still a re hazard.
A wall can be kept cool using these items but only if they are
mounted and spaced out from the wall by an inch or two to allow
free air circulation behind the protective panel. e protective
panel should also have a gap between the oor and ceiling.
ree rules to follow when constructing wall protectors:
1. Non-combustibility of all materials including mounting and
supporting.
2. A well ventilated air space between protector and wall.
3. Sucient strength and rigidity so that the protector and air
space will be durable.
CHIMNEY REQUIREMENTS
A reclay lined masonry or Class A 103HT All-Fuel Metal Insu-
lated Chimney must be used in all airtight coal furnace installa-
tions. e minimum recommended ue size for the model 1602
is 6 inches, inside diameter and for the 1802, the recommended
ue size is 8 inches, inside diameter. When making new chimney
Model
1602 - 22”
1802 - 19”
Model
1602 - 12”
1802 - 8”
Model
1602 - 20”
1802 - 25”
Model
1602 - 15”
1802 - 28”
COMBUSTIBLE WALL
COMBUSTIBLE WALL
FLUE
(TOP VIEW)
MINIMUM CLEARANCES
TO A COMBUSTIBLE
WALL
CAUTION:
DO NOT store
combustible or
flammable materials or
liquids near the
furnace.
PROTECTIVE COVERING
AND ALL SUPPORTS MUST
BE NON-COMBUSTIBLE
CONSTRUCTING
NON-COMBUSTIBLE
WALLS
2 in [5cm]
FROM FLOOR
2 in. [5cm]
FROM CEILING
1 in [2.5cm]
AIR SPACE

3
TOP OF CHIMNEY MUST BE
2 FEET [61cm] ABOVE
HIGHEST POINT OF THE
ROOF WITHIN 10 FEET
[305cm].
2 FT [61cm]
MINIMUM 3 FT [91cm]
MINIMUM
RECOMMENDED
MINIMUM HEIGHT
20 FT [610cm]
MINIMUM 3 FT[91cm] FROM
TOP OF CHIMNEY TO
POINT AT WHICH IT
PASSES THROUGH THE
ROOF.
installations, always follow the chimney manufacturer’s instruc-
tions.
If at all possible, use the factory built, class A 103HT chimney
mentioned above. ey are safer and perform better than tra-
ditional masonry chimneys. If a masonry chimney is a must,
be certain it has a re clay liner and that it is intact, clean and
recently inspected. And remember, masonry chimneys are far
more prone to the formation of hazardous creosote.
1. e furnace should be the only heating using the chimney
ue. One furnace per ue outlet.
2. A masonry chimney should have a tile or stainless steel liner.
3. e masonry chimney should not have any missing mortar
or loose bricks.
4. ere should be no mortar or parts of the chimney blocking
the chimney ue.
5. ere should be a two inch clearance between any chimney
(masonry or metal) and combustibles. (such as the house)
6. e chimney should extend at least 2 foot above the highest
point of the house, or 2 foot above the point at which the
chimney is 10 foot from the roof.
7. e chimney should be relatively straight and vertical.
8. e portion of an all-fuel metal chimney that extends above
the roof should be well secured.
9. A masonry chimney should be built on footings and not at-
tached to the house.
10. A rain cap, complete with an animal or bird screen, should
be installed on top of the chimney.
IMPORTANCE OF PROPER DRAFT
Dra is the force which moves air from the appliance up through
the chimney. e amount of dra in your chimney depends on
the length of the chimney, local geography, nearby obstructions
and other factors. Too much dra may cause excessive tempera-
tures in the appliance. Inadequate dra may cause backpung
into the room and ‘plugging’ of the chimney.
“Inadequate dra will cause the appliance to leak smoke into the
room through appliance and chimney connector joints.”
“An uncontrollable burn or excessive temperature indicates ex-
cessive dra.”
Take into account the chimney’s location to insure it is not too
close to neighbors or in a valley which may cause unhealthy or
nuisance conditions.
CREOSOTE - 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.
e creosote vapors condense in the relatively cool chimney
ue of a slow-burning re. As a result, creosote residue accu-
mulates on the ue lining. When ignited, this creosote makes an
extremely hot re.
e chimney connector and 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 the risk of a chimney re.
SMOKE PIPE INSTALLATION
Clearances to combustible materials (i.e. paneling, ceiling tile,
sheet rock, plaster, draperies, casements or wood trim, etc.) will
vary with the type of ue connection used. Be sure to maintain
the specied clearances for your type of installation.
TYPE OF FLUE REQUIRED
CONNECTION CLEARANCE
24 Gauge or Heavier ......................................... 18”
Single Wall Stainless Steel
or Black Pipe
Double Wall, Stainless Steel or......................... 6” Model 1602
Double Wall, Black Pipe w/.............................. 8” Model 1802
Stainless Steel Inner wall
Class A 103HT All-Fuel or Equivalent........... 2”
According to NFPA standards, single wall stove pipes can be
within 9” of combustibles provided an approved re retardant
material covered with 28 gauge sheet metal, spaced out 1” on
non-combustible spacers, is utilized. See illustration.
When using a Class A or double wall ue pipe connection, follow
the manufacturer’s instructions.
18” [46cm] 18” [46cm]
9” [23cm]

4
When constructing a single wall smoke pipe, the following
guidelines must be observed.
1. e connector pipe should be 24 gauge or heavier stainless
steel or black pipe.
2. Secure all joints with three #8 screws.
3. If the connector pipe must pass through a wall, an approved
insulated or ventilated thimble, at least three times the di-
ameter of the smoke pipe must be used. (i.e. a 6” diameter
smoke pipe needs an 18” thimble).
4. e connector pipe should never be used as a chimney.
IMPORTANT INFORMATION FOR ALL
CONNECTOR PIPES
e connector pipe must be constructed and installed so that
it maintains clearances, keeps condensation and creosote within
the pipe, and is capable of withstanding a 2100°F degree chim-
ney re.
1. e connector pipe should slant down toward the furnace
a minimum of 1/4” to the foot. At no time should the pipe
turn downward toward the chimney or run horizontal.
2. ere should be no more than two 90 degree elbows.
3. e connector pipe should never be longer than six feet. If
it is absolutely necessary to make a run of more than six feet
(not recommended) use extra support brackets every 3 feet.
4. e connector pipe should never be reduced to a smaller
size than ue opening on the furnace.
5. e connector pipe should not block the ue of the chimney
or extend into it in any way.
6. A good airtight thimble should be used to hold the connec-
tor pipe in the chimney. It should be constructed so the con-
nector pipe can be removed for cleaning.
7. e connector pipe should not leave the heated portion of
the building to reach the chimney.
8. e connector pipe should not pass from one story to the
next before entering the chimney, nor should it pass through
any closed or enclosed space.
9. e connector pipe and any elbows must be of 24 gauge or
greater.
10. e connector pipe should not be located near or in a walk
way or well traveled area.
11. All male ends of connector pipe should run or point to-
wards the furnace.
12. Install a cast iron adjustable damper in the rst joint of the
connector pipe, nearest to the ue collar.
DAMPERS ON STOVE PIPES
When burning coal, we recommend a Barometric Dra Damper
be installed at a safe convenient place between chimney and your
furnace preferably less than 3’ from the ue collar.
When you have installed the connector pipe between your fur-
nace and the chimney, tap the pipe hard with your ngernail.
Remember the sound it makes - it will be a “ting” echoing inside
the stove pipe. If later you tap and hear a mued thud, you are
building up soot in the pipe and should clean it. is pipe should
be cleaned at least once or twice during the heating season.
DO NOT CONNECT TWO HEATERS TO THE SAME CHIM-
NEY FLUE. e National Fire Prevention Association recom-
mends that coal burning appliances vent into a separate ue
from gas or oil furnaces. If such an installation is contemplated,
rst check with a local building inspector to nd out if a separate
ue for a coal burner is required.
Use of a Barometric Dra Control is recommended ONLY in the
event your chimney creates excessive dra leading to an over-
ring condition.
HEATED AIR DISCHARGE
e Clayton furnace is designed for use as a supplemental heating
source. When used as a supplementary furnace, the 1602/1802 is
connected in conjunction with an oil, gas, or electric furnace to
the existing duct work which distributes the heated air into sev-
eral rooms and/or areas.
ough United States Stove Company expressly Does Not rec-
ommend the use of its furnaces to be installed and/or used as
a free-standing heater, it is possible to achieve a reasonably safe
and functional installation IF certain standard procedures are
followed. e following are guidelines only and are intended to
enable the furnace user to obtain reasonable eciency from his
furnace, and with due respect to safety when installing as a “free-
standing heater”. If installed correctly, and in accordance with
the instructions found in this manual, your warm air furnace
may be installed as a “space heater” within living quarters, cab-
ins, garage, or workshop. Please adhere to the following:
1. e use of a cold air return and/or lter box is mandatory.
is will not only increase your blower life and provide l-
tered air, it will also help prevent the blower or blowers from
“capturing” heated air exiting from the top of the furnace
heat outlets.
2. If installed as purchased , without directing the heat away
from the furnace itself, it will simply sit and cycle, turning
the blowers o and on. e thermostat may not function
properly.
3. All larger furnaces (or those with multi-speed blowers) ab-
solutely require BACK PRESSURE to prevent premature
motor winding failure. If allowed to operate at high RPM
(As in “FREE AIR” mode - no duct work or ow restric-
tions) the windings overheat, insulation melts and the mo-
tor simply burns up - not covered under warranty.
CONNECTING HOT AIR DUCT
TO FURNACE
We strongly recommend that the hot air duct work be installed
by a home heating specialist. If doing the installation yourself,
before you decide which installation will best suit your needs,
consult a qualied heating technician and follow his recommen-
dations as to the safest and most ecient method of installation.
e following illustrations are the ONLY acceptable congura-
tions when installed with existing oil or gas furnaces.

5
INSTALLATION EXAMPLES
Installation #1
With this installation, a back dra damper (optional) is insert-
ed into the heat run before the plenum of the existing furnace
to prevent air from the existing furnace to blow back into the
furnace when it is not in use. When a back damper is em-
ployed, it should be located as close to the existing furnace ple-
num as practical.
INSTALLATION #3
e bae on this system should be made the full width of the
furnace plenum in order to properly direct the air into the dis-
tribution ducts.
INSTALLATION #2
Extending the hot air duct from the furnace into the existing plenum
will help direct the ow of air from the furnace as well as the ow
in the existing furnace. Ducting entering the existing plenum at an
angle (approximately 45 degrees) will facilitate air ow from the fur-
nace while diverting air from the existing furnace.
THE PLENUM OPENINGS DIFFER
BETWEEN THE 1602 AND 1802
MODEL 1602 - 13” x 18” Rectangular
MODEL 1802 - 18” x 18” Rectangular

6
NEGATIVE
PRESSURE IN
BASEMENT
(2) Door Handle
(2) 1/2” Washer
(2) 1/2” Lock Nut
(1) Spin Dra
(1) 3/8-16 Carriage Bolt
(1) 3/8-16 Lock Nut
Feed Door
Illustration
Ash Door
Illustration
(1) Feed Door Latch
(1) Ash Door Latch
(4) 1/4-20 x 3/4 Hex Bolt
(4) 1/4-20 Kep Nut
RETURN AIR IS VERY IMPORTANT
When installing a Clayton Furnace, return air MUST BE incor-
porated into the system. Return air can be provided by installing
a separate duct system or by tying into the cold air return of an
existing gas or oil furnace. e cold air return duct can be con-
nected to the furnace with either a factory manufactured U. S.
Stove lter box, model UFB908 or an equivalent fabricated from
sheet metal.
When installing a cold air return, the minimum size shall be a
16” x 20” or equivalent (320 sq. in.) in order to insure proper
furnace performance. Failure to provide return air ducts of the
specied size will void your warranty.
A lter should be installed in the cold air return. Furnace lters
should be checked and cleaned/replaced regularly.
If return air is not provided, the warm air distributed into your
home will be restricted and the eciency of the furnace is de-
creased. Without a return air system, warm air will be drawn
into your basement, unnecessarily heating unused areas of the
home. In extreme cases, if your basement or utility room is fairly
airtight, the blowers on the furnace could depressurize the room
and pull toxic ue gases from the furnace, a gas water heater, or
gas furnace. e fumes could then be distributed throughout the
house.
COMBUSTION AIR
All res need air (specically oxygen) to burn. Furnaces, re-
places, and coal burning furnaces need enough oxygen for com-
plete combustion of their fuels. e incomplete combustion that
takes place when a furnace is “air starved” causes carbon mon-
oxide (CO) to be formed in quantities that can be dangerous in-
side a well sealed house. Having a source of combustion air from
outside the home will prevent “air starvation” of the furnace. A
simple positive air supply can be constructed using dryer vent
and a modied termination.
FURNACE ASSEMBLY INSTRUCTIONS
Unpack your Furnace and insure that there is no shipping dam-
age. If damage exist, please contact your dealer immediately.
Your Clayton Furnace will require some assembly before opera-
tion. All needed hardware and components for the following as-
semblies are included within the parts boxes inside the furnace
and in the ash pan. Read and follow these instructions for proper
furnace assembly.
DOOR HANDLES
Insert door handle into door. From rear side of door, place a 1/2”
washer over the threaded part of the handle, then attach the lock
nut. Tighten the nut, then back o 1/4 turn to allow free opera-
tion of the handle.
Follow these same directions for the ash door handle assembly.
ASH DOOR SPIN DRAFT
Screw the spin dra onto the 3/8” x 2-1/2” carriage bolt. en
screw the spin dra and bolt into the ash door allowing approxi-
mately 1/2” of the bolt to stick through the back side of the ash
door. Secure the bolt in place with the 3/8”-16 lock nut.
FUEL & ASH DOOR LATCH
With two 1/4-20 x 3/4 hex bolts each, attach the door latches
to the door latch mounting brackets on the le side of the door
frames as illustrated. e slots in the brackets and latches are for
door seal adjustment. Make the proper adjustments, then tighten
the nuts. e door’s gasket should be snug against the door frame
on the furnace.

7
BRACKET
SHAKER GRATE HANDLE
Insert the Shaker Rod into the hole on the ash door frame as
shown. en attach the Shaker Bracket to the front of the fur-
nace using two 1/4-20 x 3/4” Hex Bolts and two 1/4-20 Lock
Nuts. Next, insert the shaker Rod into the bracket and attach
to the shaker grate bar using the 1/4-20 x 1” Hex Bolt and a
1/4-20 Lock Nut. e bolt and nut retaining the shaker bar and
rod should be le loose to allow free movement of the grates.
(1) Shaker Rod
(1) Shaker Bracket
(1) 1/4-20 x 1” Hex Bolt
(2) 1/4-20 x 3/4” Hex Bolt
(3) 1/4-20 Lock Nut
FRONT
SMOKE CURTAIN
SMOKE CURTAIN
CLIP
NUT
BOLT
1/4-20 NUT
SMOKE CURTAIN
CLIP
1/4-20 x 1-1/4
CARRIAGE BOLT
SMOKE CURTAIN
SMOKE CURTAIN
Using two 1/4-20 x 1-1/4” Carriage bolts, the smoke curtain
clips and two nuts, attach the smoke curtain in place above the
Fuel Feed Door as shown below. Aer installation, the smoke
curtain should swing freely back into the furnace.
(1) Smoke Curtain (2) Smoke Curtain Clips
(2) 1/4-20 x 1-1/4 Carriage Bolt (2) 1/4-20 Kep Nut
SPRING HANDLES
Attach the four(4) spring handles to the Feed/Ash Doors, Bae
Rod, and Shaker Rod by twisting the springs counter-clockwise
while applying pressure until you have screwed them approxi-
mately 3/4”-1” onto the rods.
(4) Spring Handles
DISTRIBUTION BLOWER & ACC.
1. Remove all contents and insure that all components are
present for assembly. See the part list below
2. Begin by attaching the blowers to the unit. Insert a clip into
each mounting hole in the furnace’s cabinet back. Be sure
to install the gasket between the blower and cabinet back.
Insert the eight bolts provided and tighten.
3. Mount the Honeywell limit control to the cabinet back.
e conduit assembly should already be attached to the
limit control, otherwise, do so then make the correct wir-
ing connections to the limit control. See wiring diagram.
4. Next, mount the junction box and insulation using two of
the #10 x 1/2 screws provided. Make a small slice in the
5 x 5 insulation to allow the wires from the dra blower
to protrude, then Install it between the cabinet back and
junction box, with the foil side to the cabinet back. Attach
the conduit assembly from the limit control to the junction
box as shown.
5. If not already installed, snap the rocker switch into the top
of the junction box. Provide a 110 volt power supply and
connect to the junction box with the cable clamp to the
right side.
6. Attach the two longer conduit assemblies to the junction
box and to each blower.
7. Before mounting the Fan Center, make all the wire con-
nections per the wiring diagram, then attach the fan center
to the junction box. All electrical connections should be
done by a qualied electrician.

8
WIRING DIAGRAM
NOTE: e extra brown wire on the fan center has no use. It
should be capped o or removed.
e conduit may be cut shorter to provide a cleaner installation.
(2) 800 CFM Blower
(2) Gasket, Blower
(8) Tinnerman Clip, 1/4-20
(8) 1/4-20 x 3/4 Bolt
(2) Conduit Assembly (5)
(1) Honeywell Limit Control
(1) Conduit Assembly (1)
(1) Junction Box
(1) Insulation (5” x 5”)
(1) Rocker Switch
(1) Romex Cable Clamp
(1) Fan Center Control
(3) 73B Wire Nut
(1) 74B Wire Nut
(1) Female Term. (blue)
(1) Female Term. (red)
(8) #10 x 1/2 Screw

9
FIREBOX BRICK REPLACEMENT
is furnace comes from the factory with the rebrick in-
stalled. However, if brick replacement is necessary, follow these
instructions. Before furnace operation, remove the brick re-
taining strip. is piece is used during shipping to reduce brick
damage.
For model 1602, there are 6 full brick and 1 half brick per side.
Install the half brick rst by putting the bottom of the brick in
rst and let it rest against the rebox side and re grates. en
slide it to the rear. Aer that, install the #2, #3, #4, #5 & #6
brick, sliding the 6th brick forward to allow for the 7th brick.
Repeat for opposite side.
For model 1802, there are 8 full brick and 1 half brick per side.
Install the brick in the same manner as previously instructed
for the model 1602.
FORCED DRAFT BLOWER - 69189
NOTE: Prior to operation, be sure to remove the brick retain-
ing strips.
Using two 1/4-20 x 1” bolts and nuts, attach the dra blower adapter
to the dra tube on the front of the furnace. en mount and secure
the dra blower to the adapter with the three 10-24 Kep nuts. Plug
the blower into the outlet on the front of the furnace.
(1) Dra Blower
(1) Dra Blower Adapter
(2) 1/4-20 x 1 Hex Bolt
(2) 1/4-20 Lock Nut
(3) 10-24 Kep Nut
FIREBRICK AND BAFFLE REPLACEMENT
BAFFLE/BRICK REPLACEMENT
If bae replacement is necessary, slide the bae out until you
can access the nuts thru the ue outlet. Once the nuts have
been removed, slide the bae o the rod and thru the opening
in the rebrick. You may have to remove one of the rebrick to
make bae removal easier.
For model 1602, there are 4 full brick and 1 half brick in the
top of the furnace. Install the brick by inserting one end of the
brick angled upward and then allowing the opposite end to rest
on the rebox lip. Lay the brick between the spacer and rebox
back. Slide the bae to the rear and let it rest on that half brick.
Aer installing brick #2 in the front, install #3 and slide it un-
der the bae. Finally install bricks #4 and #5.
For model 1802, there are 6 full brick in the top of the furnace.
Install the brick in the same manner as previously instructed
above.

10
GENERAL FURNACE OPERATION
Aer installation of the furnace is complete, it is ready for op-
eration. e Honeywell Limit Control, in conjunction with a
wall thermostat, operates the distribution blowers and the dra
blower on the front of the furnace. e limit control can be ad-
justed to your desired blower On/O times. e factory settings
are 100/150/200.
e wall thermostat setting operates the ON time of the dra
blower. If the temperature is below the setting on the wall ther-
mostat, the dra blower will come on. (Recommended setting at
5 to 10 degrees higher than other heating thermostats.)
e rst two set points on the limit control operates the distribu-
tion blower(s). When the furnace plenum reaches the second set
point on the limit control, the distribution blower(s) will come
on. If the temperature falls to the rst set point, the distribu-
tion blower(s) will shut-o. e rocker switch on the top of the
junction box gives you the option to run one blower or two. If
the switch is ON, both blowers will come on when the plenum
reaches the set temperature.
When the furnace reaches the third set point on the limit control,
the dra blower will shut-o. e dra blower will come back on
if the temperature falls below the setting on the wall thermostat.
TESTING
1. Check the dra blower by turning the room thermostat up
high enough so that the dra blower turns on. en lower
the thermostat setting until you hear it shut o.
2. Use a sheet of newspaper to test your dra by placing it in-
side the furnace and lighting it.
With completion of the tests above, you are ready to light the
furnace. Follow the operating steps.
FUEL SELECTION
DO NOT BURN:
1. Garbage;
2. Lawn clippings or yard waste;
3. Materials containing rubber, including tires;
4. Materials containing plastic;
5. Waste petroleum products, paints or paint thinners, or
asphalt products;
6. Materials containing asbestos;
7. Construction or demolition debris;
8. Manure or animal remains;
9. Paper products, cardboard, plywood, or particleboard.
e prohibition against burning these materials does not
prohibit the use of re starters made from paper, cardboard,
saw dust, wax and similar substances for the purpose of
starting a re in an aected coal heater.
Burning these materials may result in release of toxic fumes or
render the heater ineective and cause smoke.
ere are ONLY two types of coal allowed for use in this furnace:
Bituminous Coal (so coal) and Anthracite Coal (hard coal).
NEVER USE Cannel (or Channel) coal or Brown (Lignite) Coal.
See our Bulletin RC454 on the following pages for the best infor-
mation available on burning coal.
CAUTION: Never use gasoline, gasoline-type lantern fuel, kero-
sene, charcoal lighter uid, or similar liquids to start or “freshen
up” a re in the furnace. Keep all such liquids well away from the
furnace while it is in use.
STARTING A COAL FIRE
If you burn coal, a forced air draft is required
Shut o FAD when fuel door is open
• Open smoke pipe damper all the way. Open all dra con-
trols on your 1602/1802. Pull the slide bae forward.
• Place about 10-15 lb. of coal in on the shaker grates. It should
come up to about half of the rst rebrick level.
• Place crumpled paper over the coal and crisscross a couple
handfuls of dry kindling wood 3/4” in thickness on top of
paper.
• Ignite the paper and close loading door. Wait about 30 min-
utes until coal re is established before adding more coal.
NOTE: NEVER load coal over the level of rebrick.
• Close by-pass damper and set all dra controls to your own
needs. It may take 3 to 4 coal res to determine how your
local coal and the Clayton Furnace reacts together. Adjusts
dras accordingly.
• Loading with a good bed of coals in the morning - Open
by-pass damper.
1. In normal shaking, only rock the grates a small amount to
si ash through. Do not agitate the re bed too oen. is
practice will waste coal. If glowing coal is visible in the ash
pan, you have shaken to much.
2. Remove all ashes every day from ash pit.
CAUTION: Ashes should be placed in a metal container with a
tight tting lid. e closed container of ashes should be placed
on a non-combustible oor or on the ground well away from
all combustible materials pending nal disposal. If the ashes are
disposed of by burial in soil or otherwise locally dispersed, they
should be retained in the closed container until all coals have
thoroughly cooled.
3. With your poker, push hot burning embers to the rear of the
unit and add green coal in front. NEVER load over height
of rebrick. is can result in damage to your furnace and
home.
4. Close by-pass damper.
• Too much dra air will cause clinkering of coal and will
waste heat up the chimney. Shut dra down to as low a point
as you can and still heat your home.
1. NOTE: Never stand in front of loading door when opening
it. Stand to the side.
2. NEVER completely cover the live re with fresh coal. Al-
ways leave a generous area of glowing coal at the top of the
re and at the rear.
3. Always keep the ash pit clean.
• If the re goes out or does not hold overnight, look for:
1. Poor dra.
2. Incorrect damper settings.
TESTING AND OPERATING PROCEDURES

11
THIS IS A COAL ONLY BURNING FURNACE AND SHOULD NOT BE ALTERED IN ANY
WAY! DOING SO WILL VOID YOUR WARRANTY!
3. Improper ring methods for coal being used.
4. More combustion air needed.
5. Coal not sized to the furnace. We recommend 1” to 3” di-
ameter pieces of coal.
6. Ashes, if allowed to accumulate in the ash pit, will not al-
low the passage of required air for combustion. Keep ash
pit clean.
7. is furnace is not to be used with an automatic stoker un-
less so certied.
• ere are ONLY two types of coal allowed for use in this
furnace: Bituminous Coal (so coal) and Anthracite Coal
(hard coal). NEVER USE Cannel (or Channel) coal or
Brown (Lignite) Coal.
• See our Bulletin RC454 at the rear of this manual for the
best information available on burning coal.
• Do not over dra the furnace! It is designed to operate at .06
inches of water column and must be set with a dra gauge
to maintain a steady dra. (Barometric Damper recom-
mended.)
OPERATING NOTES
• Do not allow ashes to build up higher than 2” above grates.
• Never allow the ashes in the ash pan touch the grate section.
REMOVE ASHES FREQUENTLY!
• Be extremely careful when removing furnace ash pan; it can
get very hot.
• With new steel, there is a small amount of oil or dirt on the
metal. You may smell an odor. is is normal during the
rst operation. You may want to assemble the furnace out of
doors and build a small re in it to “burn o ” this dirt and
oil before installing the unit.
• e furnace is designed to burn coal at a predetermined r-
ing rate. Over ring could result in damage to the heat ex-
changer and cause dangerous operation. Over ring occurs
when the ash door is le open during operation or a highly
volatile fuel, i.e. large amounts of small kindling, is used. If
any portion of the connector pipe glows orange or red, you
are in an over-ring situation. Close all dampers.
• When tending the rebox always pull the bae slide rod out
prior to opening load door. Open load door slowly to avoid
a “ash back”. Aer closing load door, push the bae slide
rod to the rear.
• Equip your home with re extinguishers and smoke detec-
tors appropriately located.
• Inspect air lters regularly. e air lter in the lter box
should be changed at least every 30 days.
• Oil motor on forced air dra every 90 days with a few drops
of 30 wt. oil.
• e distribution blower motors may be one of two types. If
the motor has sealed bearings, no oiling is required.
• If the motor is equipped with ll holes, the motor should be
oiled every 90 days with several drops of 30 wt. oil.
• Check the t on the load door. It must t tightly. If it does not,
check for deterioration or wear of the ceramic rope seal. Replace
defective seals.
• Inspect and clean your chimney and stove pipe regularly.
• In event of chimney re, shut all dra controls and call your re
department immediately. Alert everyone in the house. If the re
is still burning vigorously, throw baking soda into rebox or dis-
charge a re extinguisher into the rebox. Aer chimney re is
over, completely inspect system for damage before further use.
• NEVER throw water on the re or at the furnace, as rapidly ex-
panding steam could result in a severe scalding.
• Slow res: It is not recommended burning the Clayton furnace any
more than necessary early in the fall and late spring, as you can-
not keep the rebox hot enough (without overheating your home)
to burn gases. Slow res can cause excessive creosote build-up in
smoke pipe, chimney and rebox.
• Wood should be placed directly onto the cast iron shaker grate of
the furnace. Do not use additional grates and/or irons.
• In the event of a power failure, you may operate the 1602/1802
furnace provided the following instructions are followed:
1. Any air lter should be removed.
2. Observe the furnace operation closely and oen till power is re-
stored.
• Do not burn garbage, plastics, gasoline, drain oil or other am-
mable liquids. Plastics, when burned, form hydrouoric and hy-
drochloric acids which will damage and destroy your furnace pipe
and chimney. e burning of trash or oil can result in an extremely
hot re and is sometimes a cause of chimney res. NEVER BURN
GREEN WOOD OR TIRES.
• Do not store fuel or other combustible material within marked in-
stallation clearances.
NOTE: For further information on using your furnace safely, obtain
a copy of the National Fire Protection Association publication “Using
Coal and Wood Stoves Safely.” NFPA NO. NW-8-1974. e address of
the NFPA is 470 Atlantic Ave., Boston, Massachusetts 02210.
TAMPER WARNING
is coal heater has a manufacturer-set minimum low burn rate
that must not be altered. It is against federal regulations to alter
this setting or otherwise operate this coal heater in a manner
inconsistent with operating instructions in this manual.
VISIBLE SMOKE
e amount of visible smoke being produced can be an eective
method of determining how eciently the combustion process
is taking place at the given settings. Visible smoke consist of un-
burned fuel and moisture leaving your stove. Learn to adjust the
air settings of your specic unit to produce the smallest amount
of visible smoke.

12
EFFICIENCY
Eciencies can be based on either the lower heating value (LHV)
or the higher heating value (HHV) of the fuel. e lower heating
value is when water leaves the combustion process as a vapor,
e higher heating value is when water leaves the combustion
process completely condensed. e best way to achieve optimum
eciencies is to learn the burn characteristic of you appliance.
Higher burn rates are not always the best heating burn rates; af-
ter a good re is established a lower burn rate may be a better
option for ecient heating. A lower burn rate slows the ow of
usable heat out of the home through the chimney, and it also
consumes less coal.
OPERATIONAL TIPS
• Get the appliance hot and establish a good coal bed before
adjusting to a low burn rate
• Use smaller pieces of wood during start-up and a high burn
rate to increase the stove temperature
• Burn small, intense res instead of large, slow burning res
when possible
• Learn your appliance’s operating characteristics to obtain
optimum performance
OVER FIRING
Attempts to achieve heat output rates that exceed heater design
specications can result in permanent damage to the heater.
ASH REMOVAL AND DISPOSAL
Whenever ashes get 3 to 4 inches deep in your rebox or ash pan,
and when the re has burned down and cooled, remove excess
ashes. Leave an ash bed approximately 1 inch deep on the rebox
bottom to help maintain a hot charcoal bed.
Ashes should be placed in a metal container with a tight-tting
lid. e closed container of ashes should be placed on a non-
combustible oor or on the ground, away from all combustible
materials, pending nal disposal. e ashes should be retained
in the closed container until all cinders have thoroughly cooled.
SMOKE AND CO MONITORS
Burning coal naturally produces smoke and carbon
monoxide(CO) emissions. CO is a poisonous gas when exposed
to elevated concentrations for extended periods of time. While
the modern combustion systems in heaters drastically reduce the
amount of CO emitted out the chimney, exposure to the gases in
closed or conned areas can be dangerous. Make sure you stove
gaskets and chimney joints are in good working order and seal-
ing properly to ensure unintended exposure. It is recommended
that you use both smoke and CO monitors in areas having the
potential to generate CO.
GASKETS
It is recommended that you change the door gasket (which
makes your stove door air tight) once a year, in order to insure
good control over the combustion, maximum eciency and
security. To change the door gasket, simply remove the dam-
aged one. Carefully clean the available gasket groove, apply a
high temperature silicone sold for this purpose, and install the
new gasket. You may light up your stove again approximately 24
hours aer having completed this operation. is unit’s doors
each use a 3/8” diameter rope gasket.
ATTENTION:
This coal heater needs periodic inspection and repair for proper operation. It is against federal regulations to operate this
coal heater in a manner inconsistent with operating instructions in this manual.

13
TROUBLE SHOOTING AND PROBLEM SOLVING
Problem Solution
1. Smoke pus from furnace
• Check chimney dra. Check for blocked chimney or ue pipe. Use mirror to check
chimney clearance.
• Check ash pit — if it is too full, empty.
• Make sure furnace room is not too airtight.
• Make sure all of chimney mortar connections are airtight.
• Check ash drawer. Make sure it’s airtight.
• Check chimney for possible down-dra caused by taller surrounding trees or objects.
Correct with proper chimney vent cap.
• Check the possibility of a cold chimney forcing cool gases backward. Remedied by
properly insulating chimney with non-combustible liner — non-combustible insulation.
• Fuel may be too green.
• Make sure no other fuel burning devices are connected to the chimney impairing the
dra.
• Check chimney dra, it should be .06 inches of water column. is service is provided by
a certied chimney sweep.
2. Inadequate heat being delivered to your
home
• Check home insulation — is it adequate?
• Check hook-up to furnace — is it installed correctly?
• Cool air inlet may be inadequate or furnace room too airtight.
• Make sure your hot air duct (and other duct work) is airtight.
• If furnace room is warm but your home isn’t, check back dra dampers.
• Is air to the blower available?
3. Excess smoke or ames coming out door
when refueling
• Wait 15 seconds and open door SLOWLY — then refuel.
• Check length of ue pipe to chimney. Your unit should be within six (6) feet of your
chimney.
• Make sure chimney cap is not too close to the top of the chimney.
• Check chimney dra — make sure chimney ue pipe is clean and chimney is of adequate
height.
• Make sure you’re not suocating the re with excessive amounts of unburned coal.
• Slide bae should be pulled out prior to load door opening.
4. Distribution blower vibrating • Tighten blower wheel to motor sha.
• Check for bad fan bearings.
5. Distribution blower continues to run or
will not run
• Check fan limit or heat sensor and cable.
• Check to see that blower is properly wired. (See Wiring and Assembly Instructions).
• Check fuse box or power source.
• Check power supply.
6. Dra blower continues to run or will not
run
• Check wiring.
• Check thermostat or thermostat wire for short.
• Make sure temperature is calling for heat.
7. Odor from rst re • e odor from new steel should disappear in a few hours.
• If the odor remains, call you dealer immediately. A bad weld can cause a fume leak.
8. Excessive Creosote
• Make sure your unit is serviced by its own proper chimney.
• Check length of ue pipe and its connections.
• Make sure you are burning the smallest, hottest re to adequately heat your home.
• Also see Solutions to Problem one.
9. If the re goes out or does not hold over
night
• Poor Dra.
• Incorrect damper settings.
• Improper ring methods if burning coal.
• More combustion air needed.
• Coal not sized to the furnace. We recommend 1” to 3” diameter pieces of coal.
• Ashes, if allowed to accumulate in the ash pit, will not allow passage of the required air
for combustion. Keep ash pit clean.
• is furnace is not to be used with an automatic stoker unless so certied.

14
PARTS DIAGRAM
11
12
13
16
15
17
14
7
10
5
23
6
32 31
4
3
2
1
37
3
8
9
24
26
25
27
17
16
3 19
18
20
28 29 30
36 21
22
34
34
35
23
33

15
38
39
41
40
44
43
47
45
48
49
42
46
50
PARTS DIAGRAM AND LIST
N/S = Not Shown
P = Items designated for model 1800
IMPORTANT NOTE:
When ordering repair parts, a color code (G) should be placed aer the part
number of any part that is painted.
Key Description Part # Qty
1Feed Door Assy. (w/Rope Gasket) 69091 1
2Door Handle 24179 2
N/S Lock Nut, 1/2-13 83444 2
N/S Washer 83835 2
3 Spring Handle 89574 4
4Feed Door Latch 23786 1
5Ash Door Assy. (w/Rope Gasket) 68880 1
6 Dra Cap 23859 1
7Ash Door Latch 23823 1
N/S Hinge Pin, 5/16” x 1” C21399 4
8Shaker Handle 69005 1
9Bracket, Shaker Handle 24204 1
10
P
Ash Pan
Ash Pan - 1800
68882
68919
1
1
11
P
Grate Retainer
Grate Retainer - 1800
40312
40337
2
2
12 Shaker Bar 891341 1
13
P
Shaker Grate Section
Shaker Grate Section - 1800
40314
.............
5
7
14
P
Back Liner
Back Liner - 1800
40313
40339
1
1
15
P
Front Liner
Front Liner - 1800
40344
40338
1
1
16
P
Full Firebrick (4-1/2 wide x 9 tall x 1-1/4 thick)
..............................................................................
89066
.............
16
22
17
P
Half Firebrick (2-1/4 wide x 9 tall x 1-1/4 thick)
..............................................................................
891414
.............
3
2
18 Slide Bae 24231 1
19
P
Bae Rod
Bae Rod - 1800
86603
86607
1
1
20 Lock Nut, 1/2-13 83444 2
21 Gasket, Flue Collar 88032 1
22 Flue Collar 40246 1
23
P
Flue Collar Ring
Flue Collar Ring - 1800
22761
23958
1
1
24 Smoke Curtain 23800 1
25 Smoke Door Clip 23787 2
26 Carriage Bolt, 1/4-20 x 1-1/4 Long 83445 2
27 Kep Nut, 1/4-20 83250 2
28
P
Cabinet Side, Le
Cabinet Side, Front Le - 1800
68821
68962
1
1
29
P
Insulation, Side
Insulation, Side - 1800
C98771
23977
2
2
30 Insulation Retainer 83884 41
31
P
Cabinet Side, Right
Cabinet Side, Right - 1800
68822
68961
1
1
N/S Cabinet Side, Back - 1800 69002 2
32 Receptacle, Snap-In 80351 1
33
P
Cabinet Back
Cabinet Back - 1800
69573
69613
1
1
34
P
Insulation, Panel
Insulation, Back - 1800
C98871
23978
2
2
PInsulation, Top - 1800 23979 2
35
P
Cabinet Top
Cabinet Top - 1800
69088
68964
1
1
Key Description Part # Qty
36
P
Front Filler
Front Filler - 1800
23817
24190
1
1
37
P
Dra Cover
Dra Cover - 1800
23818
24508
1
1
38 Room Blower - 800 CFM 80530 2
39 Blower Gasket 88127 2
40 Tinnerman Clip, 1/4-20 83340 8
41 Bolt, 1/4-20 x 3/4 83339 8
42 Conduit Assembly (5) 69578 2
43 Honeywell Limit Control 80145 1
44 Conduit Assembly (1) 68859 1
45 Junction Box 25625 1
46 Insulation (5” x 5”) 25626 1
47 Rocker Switch C42373 1
48 Romex Cable Clamp 80362 1
49 Fan Center Control 80130 1
50 Water Coil Access Cover 23819 1

16
PARTS DIAGRAMS AND LISTS - 69189
UFB908 COLD AIR RETURN / FILTER BOX - OPTIONAL KIT
1
43 5
2
Key Description Part # Qty
1Drq Blower Assembly 69190 1
2 FAD Bracket 69192 1
3Bolt, 1/4-20 x 1” 83379 2
4Lock Nut, 1/4-20 83261 2
5Kep Nut, 10-24 83244 3
As mentioned earlier in this manual, a cold air return and/or
lter box should be incorporated into your furnace installation.
A cold air return or lter box will increase the life of your blow-
ers and oer ltered distribution air for your home. U.S. Stove
oers the model UFB908 as an option and can be purchased
from your local dealer.
e UFB908 utilizes a standard 16” x 20” lter that can be
purchased from your local dealer or any hardware/duct work
supply store. When installing a UFB908, follow the installation
instructions supplied with the kit.

17
DOMESTIC HOT WATER COIL KIT - OPTIONAL
DOMESTIC HOT WATER
COIL
REAR WALL OF
FIREBOX
TURN INSIDE NUTS UP
TO END OF THREADS
1. NUT
2. WASHER
3. GASKET
2
3
4
5
6
ACCESS
PANEL
1
is Furnace will accept the installation of a Domestic Hot Wa-
ter Coil Kit. e U.S. Stove kit is a 1124 Water Coil and it may
be purchased from your local dealer.
1. Remove the access panel on the rear of the furnace enclo-
sure.
2. With a utility knife, cut away a section of the insulation (if
equipped) directly behind the access panel.
3. Remove the cover plate from the rear of the furnace re-
box.
4. Place one nut on each end of the water coil and thread each
nut up to the end of the threads on the coil.
5. Insert the coil through the holes from the inside of the re-
box. Install a gasket, washer and nut onto each end of the
water coil. Tighten the nuts down securely to insure an air
tight seal.
e installation is now ready to be plumbed to your existing
hot water system. Choose one of the three methods described
in the Hot Water Coil instructions.
6. Remove knockouts from the access panel and re-attach to
the furnace enclosure.
Have a qualied plumber connect your domestic hot water
pipe to the coil with the appropriate ttings.
DR6 - 6” DRAFT REGULATOR KIT - OPTIONAL KIT
In the unlikely event that your furnace “overres” (a condition
evidenced by elbows, stove pipes, and connectors glowing red
in appearance or otherwise discoloring), then your installa-
tion is subject to excessive dra created by either a chimney
too tall or too great in diameter in conjunction with its height,
or some other factor of an indeterminate cause. In this event,
you should install a barometric dra regulator. Such installa-
tion will preclude any over-ring and/or any hazardous conse-
quences of potential overring.
Barometric dra regulators are generally available where you
purchased your stove or may be ordered directly from United
States Stove Company at a nominal charge.

18
BULLETIN RC454
A GUIDE TO BURNING COAL IN YOUR FURNACE
Furnaces that are capable of burning coal usually will burn both
Bituminous and Anthracite coal. Anthracite is perhaps the best
coal fuel because of its long even burn time, high heat output,
and cleanliness which make it a good choice for the home. How-
ever, keep in mind it is a much more dicult fuel to use, requires
more care and patience, is not so widely available, and is usually
much more expensive than Bituminous.
SIZE OF COAL
Most sizes of Bituminous Coal will work in a coal furnace; for
best results we recommend large “nut” coal to small “egg” coal
(1-3/4” diameter to 4” diameter). When burning Anthracite, use
“egg” or “broken” with sizes between 2-5/16” thru 4-3/8”. Note
that it is important to the long life of your stove to buy coal which
has been sized and cleaned. Cleaning insures removal of rocks
and other minerals. Never use coal smaller than 1” or larger than
5” in diameter. Small sized coal will smother the re. Too large a
size of coal will not burn well.
STOVE OPERATION
All coal res should be started with wood which will allow the
re to get hot enough to ignite the coal. e best ignition res
utilize dry pine or other resinous so woods as kindling, with
hard wood (oak, hickory, ash) added to increase the heat prior to
addition of the coal.
Before starting the re, open the stove pipe damper (if epuipped),
turn the thermostat to high, open the ash pit door and feed door,
place newspaper and nely split kindling on the grate, light the
paper, add larger hard wood aer the kindling is burning bright-
ly. Caution: Never use gasoline, lantern fuel, kerosene, charcoal
lighter uid, or other ammable liquids to start or freshen up a
re in any heater. Place the larger pieces of wood on the re so
that they are slightly separated and form a level for the addition
of coal. It will take 10 to 20 minutes before this wood is thor-
oughly ignited. Adding coal too soon will cut the air supply and
smother the re.
BURNING BITUMINOUS
Once your kindling and wood re has produced a bed of well
established coals, start adding coal in layers allowing each to ig-
nite before adding more. Bituminous has a high volatile content
and, as a result, should be red with the “conical method” - with
the highest portion of your re bed in the center of the rebox.
e rst ames will be long and generally orange or yellow and
produce quite a bit of smoke. As the gases burn o the ames
become shorter, change color and produce less smoke.
Once the re is WELL ESTABLISHED add coal to the center of
the rebox forming the cone. Burning in this fashion allows heat
to drive o the volatile gases, and turbulence created increases
the burn eciency. ere will have to be some experimenting
with the individual setup as no two chimney’s or installations are
going to be the same. Just remember to allow enough air to enter
the rebox and keep the stove pipe damper open so that volatiles
are properly burned. Before refueling, take the time to break up
the cone a little with a poker, especially if it has caked over or
formed a crust. But, be careful not to mix the coal as this increas-
es the chances of forming clinkers. When shaking the grate(s)
be gentle. Just a few short movements - a couple of “cranks” - is
better than a lot of agitation. e objective is to remove a small
amount of the ashes without disturbing the re. Stop when you
see a glow in the ashes or the rst red coals fall into the ash pan.
Excessive shaking wastes fuel and can expose the grate(s) to very
high temperatures which can cause warpage or burnout.
For overnight operation (long duration burn time) shake the re
and add coal, retaining the center cone. Once the volatiles are
burned o, close the feed door and adjust the stove pipe damper,
if epuipped. en adjust the thermostat to the desired heat level.
More MAINTENANCE will be needed with bituminous coal
than with anthracite coal as more soot will collect on heating
surfaces and in pipes, requiring more frequent cleaning.
ANTHRACITE
Add a thin layer of coal (preferably smaller chunks) to the wood
re, being careful not to disturb it too much or cut o the dra.
en, add a second heavier layer aer the coal is ignited and
burning well. If necessary, add a third layer to bring the coal up
to the top of the front liner (not above!). Be sure to close the ash
door.
Before adding further fuel, be sure to leave a red spot of glowing
coals in the center of the rebox to insure that the re has not
been smothered and to help ignite the gases given o by the new
charge. A deep charge will give a more even heat and a longer
re, but it may take one to two hours before the whole bed is
fully ignited.
When the re is well established and the room is becoming
warm, partially close the dampers. Some experimenting will
have to take place with each particular setting of all dampers and
controls as the chimney provides the dra necessary to not only
exhaust the smoke, but to pull combustion air into the heater as
well - and no two chimney’s perform the same. Under ideal dra
conditions, one should be able to turn the secondary air supply
below the feed door (some models) to a near closed position -
but leave the ash pit damper at least partially open to prevent the
re from going out. Adjust the stove pipe damper to reduce the
dra on the re. With anthracite there will be short blue ames
above the coal, except when the re is started or a new charge is
added. If, however, there is no ame then the re needs more air
from the bottom (unless it is near the end of its burn cycle and
needs to be recharged).
Only when the coal is burned down to half its original depth it
is time to add fresh coal. When doing so, open the stove pipe
damper and turn the thermostat damper to high, which will al-
low the re to burn o any accumulated gases. Open the feed
door, and with a small rake, hoe, or hooked poker pull the glow-
ing coals to the front of the rebox. Try not to disturb the re too
much. Next, add a fresh charge to the back being careful not to
seal o the top. Close the feed door, but leave the spin damper
(or thermostat) open for a few minutes until the volatile gases
have burned o. It is not necessary to shake down the ashes each
time you refuel the furnace. Experience will be your best teacher.

19
BULLETIN RC454
A GUIDE TO BURNING COAL IN YOUR FURNACE
BANKING THE FIRE
For extended operation, such as overnight, the re will need to
be banked. To do so heap coal up along the sides and back of the
rebox so that the re gradually burns it over a longer period of
time. e intensity of the re will also be reduced without letting
it go out. Follow the same procedure as for refueling. If possible,
avoid shaking, as a heavier layer of ash will help reduce the inten-
sity of the re during this time. Aer loading, let the re establish
itself for about 30 minutes. en close your damper and auto-
matic control to the point where the house does not become too
cold. It is important that you begin banking early enough before
retiring or leaving that you can make necessary adjustments aer
the re is well established.
To revive a coal re that is almost out, (1) open the ash door and
stove pipe damper and close the spin damper under the door to
get a good dra through the grate. (2) place a thin layer of dry
coal over the entire top of the re. DO NOT POKE OR SHAKE
THE FIRE AT THIS TIME! (3) aer the fresh coal has become
well ignited shake the grate (just a little), refuel.
DO NOT burn coke, charcoal, high volatile bituminous coal, sub
bituminous, lignite or cannel coal (sometimes called channel
coal or candle coal).
NEVER burn wax or chemically impregnated sawdust logs -
their intended use is for replaces only.
NEVER ll the stove or furnace above the rebrick or cast iron
liner.

20
NOTES