USSC Ashley 22AF User manual

1
•DRAWINGS FOR ILLUSTRATION PURPOSES ONLY•
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CAUTION:
READALLINSTRUCTIONSCARE-
FULLY BEFORE STARTING THE
INSTALLATION OR OPERATING
THE FURNACE
IMPROPER INSTALLATION MAY VOID
YOUR WARRANTY
DO NOT USE THIS FURNACE
IN A MOBILE HOME OR TRAILER
851533A
*FOR INSTALLATION AS A CENTRAL FURNACE
*CERTIFIED UNDER ANSI/UL 391 & CAN/CSA-B366.1-M91
CRUS
Model 22AF
OWNER'SMANUAL
SOLID FUEL
WARMAIRFURNACE
UNITED STATES STOVE COMPANY
227 Industrial Park Road
P.O.Box 151
South Pittsburg, TN 37380
[phone]
Keeping North America WKeeping North America W
Keeping North America WKeeping North America W
Keeping North America Warm Since 1869arm Since 1869
arm Since 1869arm Since 1869
arm Since 1869

2•DRAWINGS FOR ILLUSTRATION PURPOSES ONLY•
TOOLS AND MATERIALS NEEDED
TOOLS
Pencil
6 Foot Folding Rule or Tape
Tin Snips
Drill, Hand or Electric
Drill Bit (For Sheet Metal Screws) 1/8" Dia.
Screw Driver (Blade-Type)
Gloves
Sabre Saw
5/16" Nut Driver or
5/16" Socket with Rachet
MATERIALS
6" Pipe, 6" Elbow, Collar and Thimble; as required
(24 gauge min.)
1/2" Sheet Metal Screws
6" Inside Diameter Listed Residential Type or
Building Heating Appliance Chimney or Existing
Masonry Chimney (SEE Page 8).
ElectricalWiring
6"DraftRegulator
1/2"Conduit
(ConduitConnectors)
FurnaceCement(ManufacturerRecommends:
Rutland Black - Code 78 or Equivalent)
PlenumandDuctWorkasRequired
CONGRATULATIONS!
You've purchased one of America's Finest Wood and Coal Burning Furnaces.
By heating with wood and coal you're helping to CONSERVE AMERICA'S
ENERGY! Wood is our Renewable Energy Resource. Please do your part to
preserveourwoodsupply.Plantatleastonetreeeachyear.Futuregenerations
will thank you.
NOTE: YOUR UNIT MUST BE INSTALLED BY A QUALIFIED
FURNACE INSTALLER. IMPROPER INSTALLATION COULD
VOID YOUR WARRANTY!

3
•DRAWINGS FOR ILLUSTRATION PURPOSES ONLY•
CAUTION
Your Furnace has the following labels. Read and obey all labels.
REFER TO MARKINGS ON THE APPLIANCE FOR ADDITIONAL INFORMATION.
CAUTION!
INSPECT FLUE PIPES, FLUE PIPE JOINTS AND FLUE PIPE SEALS
REGULARLY TO ENSURE THAT SMOKE AND FLUE GASES ARE NOT
DRAWN INTO,ANDCIRCULATEDBY,THE AIR CIRCULATIONSYSTEM.
CAUTION!
CLEANOUT OF THE HEAT EXCHANGER, FLUE PIPE, CHIMNEY, AND
DRAFT INDUCER IF USED, IS ESPECIALLY IMPORTANT AT THE END
OF THE HEATING SEASON TO MINIMIZE CORROSION DURING THE
SUMMER MONTHS, CAUSED BY ACCUMULATED ASH.
If this heater is not properly installed, a house
fire may result. For your safety, follow the in-
stallation directions. Contact local building or fire
officials about restrictions and installation in-
spection requirements in your area.
SAFETY
NOTICE:
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.
WARM-AIR SUPPLY-DUCT SYSTEM MUST BE CONSTRUCTED ONLY OF METAL

4•DRAWINGS FOR ILLUSTRATION PURPOSES ONLY•
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.
Check your local codes. This installation must comply with their rulings.
Do not install this furnace in a mobile home or trailer.
Always connect this furnace to a chimney and vent to the outside. Never vent to another room or inside
abuilding.
Do not connect this furnace to an aluminum Type B gas vent. This is not safe and is prohibited 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)
Be sure that if a masonry chimney is used, it is safely constructed and in good repair. Have the
chimney inspected by the Fire Department or an inspector.
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.)
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.
CAST IRON PARTS MUST BE "SEASONED" TO AVOID CRACKING. BUILD ONLY SMALL FIRES
ON FIRST USE.
To prevent injury, do not allow anyone to use this furnace who is unfamiliar with the correct operation of
thefurnace.
For further information on using your furnace safely, obtain a copy of the National Fire Protection
Association (NFPA) publication "Chimney's, Fireplaces and Solid Fuel Burning Appliances" NFPA 211.
The address of the NFPA is Batterymarch Park, Quincy, MA 02269. For more information on Canadian
installation , obtain a copy of CAN/CSA-B366-M91 Installation Code for Solid Fuel Burning Appliances
andEquipment.
Keep the ashpit section free of excess ashes. Do not allow ashes to stack higher than the sides of the
ashpan.
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 combustible 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.
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 construction 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.
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
RULES FOR SAFE INSTALLATION AND OPERATION

5
•DRAWINGS FOR ILLUSTRATION PURPOSES ONLY•
Your Ashley Furnace is designed to be a
supplemental or central heating source for your
home. This solid fuel furnace may be installed in
conjunction with a properly operating central fur-
nace that is listed or certified in accordance with
nationally recognized safety standards and
equipped with the required controls and other
safetyfeaturesand whichhasbeeninstalled with
appropriatestandardsof NationalFireProtection
Associationwith installationclearancesspecified
inthefurnacenameplatemarking.Theinstallation
mustbe accomplishedbyaqualifiedagency(one
who is engaged in, and is responsible for, or is
thoroughlyfamiliarwiththeinstallationand opera-
tion of the gas, oil, and solid fuel burning heating
appliances, who is experienced in such work,
familiar with all precautions required, and has
compliedwithalltherequirementsoftheauthority
having jurisdiction.) The installation shall be in
strictaccordancewiththemanufacturer'sinstalla-
tion instructions furnished with the solid fuel fur-
nace.
Thechimneyconnectorofthefurnaceistobe
installed to provide clearances to combustible
material not less than specified in the individual
classifications and marked on the furnace. The
chimneyconnectormustbeconnectedtoa chim-
neysuitableforusewithresidentialtypeorbuilding
heatingapplianceswhichburnsolid fuel.
The furnace is designed to operate in either
parallel or series air flow arrangement with the
central furnace or as a central furnace.
CENTRALFURNACEINSTALLATION:Asacen-
tral furnace, the unit functions independently of
any other system. The blower will come on when
theplenumtemperaturereachesthe settingonthe
blowercontrol.
HOW THE FURNACE FUNCTIONS
Your Furnace is designed to be installed in a parallel air flow arrangement with a gas or oil-fired
forced air upflow-type central furnace, or it may be installed as a central furnace.
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 you 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.
Keep the feed and ash doors closed at all times except while tending the furnace.
14.
15.
RULES FOR SAFE INSTALLATION AND OPERATION
PARALLELINSTALLATION:Thedesignissuch
thatwhentheblowercomeson,thebloweronthe
central system also comes on.
The blower will only come on when the
temperatureintheplenumhasreachedthe setting
ontheblowercontrol.Thisistoinsurethatthereis
sufficient warm air in the system to make it
efficient for the unit to operate. When the central
system thermostat calls for heat, the central sys-
tem will operate by the burner igniting and the
blowercomingon.Itispossiblethatbothsystems
will operate simultaneously. It is recommended
that for the most efficient use of your Ashley
Furnace, that it be fired as much as possible in
ordertoreducethedemandonyourexistingcentral
heatingsystem. This unit has anOptionalforced
draft kit that operates from a wall thermostat.
Whenthetemperaturefallsbelowthesettingonthe
wallthermostat,theforceddraftwillcomeon.(U.S.
Stove Option 11 DIK)
The warm air supply outlet of the Ashley
furnaceshallnotbeconnectedtothecoldairreturn
inletofthecentralfurnacebecausethepossibility
existsof components of the central furnaceover-
heatingandcausingthecentralfurnacetooperate
otherthanisintended.
SERIESINSTALLATION:(U.S.&CANADA)
This type of installation uses only the blowers of
theexistingcentralfurnace. Thesolidfuelfan/limit
control must also control the functions of the
existing furnace. All electrical power must come
from a single branch circuit.

6•DRAWINGS FOR ILLUSTRATION PURPOSES ONLY•
MODEL 22AF DIMENSIONS
FIG. 1

7
•DRAWINGS FOR ILLUSTRATION PURPOSES ONLY•
1.
2.
3.
4.
FIG. 3
Thefurnaceshouldbelocatedinthesameroom
asthecentralsystemandascloseaspossible,
but no closer than 9". There should be no wall
betweenthefurnaceandthewarmairoutletduct
thatisconnecteddirectlytothewarmair outlet
plenum of the central furnace. See Fig. 2.
The unit will require installation with the
followingclearances:
Unit to sidewall........... 12"(305mm)
Unit to backwall ......... 30"(760 mm)
Chimneyconnectorpipetosidewall
.................................. 18"(530mm)
Chimneyconnectorpipe to backwall
.................................. 18"(460mm)
Hot air ducts to combustibles
.................................. 2" (50 mm)
NOTE: Install only on a noncombustible
floor. (REFER TO FIG. 2 & 3)
Place the furnace on a noncombustible floor.
Check figures 2 and 3. Be sure you have the
clearances shown from the furnace and the
connector pipe to combustible surfaces. If you
have a solid brick or stone wall behind your
heater, you can place the furnace as close as
youwishtothewall.Ifthewallisonlyfacedwith
brick or stone, treat it as a combustible wall.
LOCATING THE FURNACE
FIG. 2

8•DRAWINGS FOR ILLUSTRATION PURPOSES ONLY•
LISTED FACTORY BUILT CHIMNEY
Carefully follow chimney manufacturer's instructions. Use only a Listed Residential Type or Building Heating
ApplianceChimney.If yourchimneystartsat theceiling(Fig.5), youwillneedenough 6"pipetoreach theceiling.
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).
FIG. 5
MASONRY CHIMNEY
Beforeusinganexistingmasonrychimney,cleanthechimneyandinspecttheflueliner tobesureitissafetouse.
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.
Thechimneyconnectionshouldbeasshortaspossible. Iftheconnectorpipemustgothroughacombustiblewall
beforeenteringthemasonrychimney,consultaqualifiedmasonorchimneydealer.Theinstallationmustconform
to local fire codes, and N.F.P.A. 211.
DO NOT CONNECT THIS FURNACE TO A CHIMNEY FLUE SERVING ANOTHER APPLIANCE.
Thechimneyusedforafurnacemustnotbeusedtoventilatethecellarorbasement.Ifthereisacleanoutopening
at the base of the chimney, close it tightly.
FIG. 4
CHIMNEY CONNECTION

9
•DRAWINGS FOR ILLUSTRATION PURPOSES ONLY•
RULES FOR CONNECTOR PIPE INSTALLATION
FIG. 6
Thecrimpedendofthechimneyconnector
fits inside the furnace flue collar. Install
additional chimney connector and elbow
with the CRIMPED END TOWARD THE
FURNACE. This will allow any condensa-
tioninthefluetorunback into the furnace.
Use 6" dia. (minimum 24 gauge) black
chimneyconnector.
Slopeanyhorizontalpipeupwardtowardthe
chimney at least 1/4 inch for each foot of
horizontalrun.
You must have at least 18 inches of
clearance between any horizontal piping
and the ceiling. (See Fig. 3)
The chimney connector must not extend
into the chimney flue (See Fig. 6).
Sealeachchimneyconnectorpipejointwith
furnace cement. Also seal the pipe at the
chimney.
Use3sheetmetalscrewsateachchimney
pipe joint to make the piping rigid.
Thechimneyconnectormayincludeasec-
tionforabarometricdraftregulatorbetween
thefurnaceandthechimney(Fig.4,5,6,&
7). The barometric draft regulator must be
installedinthesameroom(samepressure
zone) as the furnace.
Installthebarometricdraftregulatorstrictly
inaccordancewiththeinstructionsthatare
providedwiththebarometricdraftregulator.
Asoliddampercanbeplacedbetweenthe
barometricdraftregulatorandthechimney.
(Fig. 4, 5, 6, & 7)
1.
2.
3.
4.
5.
6.
7.
8.
9.
FIG. 7
Adjusting the
Barometric Draft Regulator
Drillaholeinthechimneyconnectorwithin
18" of the flue collar below the barometric
draft regulator just large enough for the
tube of the manometer.
Build a fire after all chimney connections
have been made.
Use a manometer to measure the draft in
the flue. (U.S. Stove Model DG-26)
Adjust the barometric draft regulator to
obtain a draft of 0.05" - 0.06" W.C. under
stable conditions.
1.
2.
3.
4.

10 •DRAWINGS FOR ILLUSTRATION PURPOSES ONLY•
CONNECTIONOFCHIMNEY CONNECTOR TOA MASONRY CHIMNEY
THROUGHA COMBUSTIBLEWALL
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
throughacombustiblewall. NFPA Standard 211 allows the following wall pass-through systems.
FIGURE 8 -
CONNECTIONOFCHIMNEY CONNECTORTOA MA-
SONRYCHIMNEY THROUGH ACOMBUSTIBLE WALL
MASONRY CHIMNEY
CONSTRUCTEDTO
NFPA 211
AIRTIGHT
CLEANOUT
DOOR
FLOOR
PROTECTOR
COMBUSTIBLEWALL
TO
HEATER
CHIMNEY CONNECTOR
CEILING
SEE PARTS A, B, C,
D,AND EOF THIS
FIGUREFOR
OPTIONS.
CHIMNEY FLUE
(FIGURE8CONTINUEDON NEXT PAGE)

11
•DRAWINGS FOR ILLUSTRATION PURPOSES ONLY•
MINIMUM 12 IN.
TO COMBUSTIBLES
PART A, FIGURE 8
(FIGURE 8 CONTINUED ON NEXT PAGE)
Use a minimum 3-1/2" thick brick masonry wall framed into the combustible wall. A fireclay liner (ASTM C315 or
equivalent)havinga5/8"minimumwallthicknessmustbeusedanditmustbe at least 12" away from any material that
couldcatchfire. Theinside diameter of the fireclay liner shall be sizedfor the proper snug fitof a 6" diameterchimney
connectorpipe.Thefireclay liner shall run from the outer surface ofthe brick wall to, butnot beyond, the innersurface
of the chimney flue and shall be firmly cemented in place. See Part A of Figure 8.
Usea solid insulated listed factory-built chimneylength havingan insidediameter of6" andhaving 1" ormore ofsolid
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
sealedtotheflueandtothebrickmasonrypenetrationwithnonwater-solublerefractorycement. Sheetsteelsupports
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.
Use a 10" diameter ventilated thimble made of at least 24 gauge(0.024") steel having two 1" air channels. The
ventilated thimble must be separated from combustible materials by a minimum of 6" glass fiber insulation. The
openinginthecombustiblewall shall be coveredandthethimblesupportedwithsheet steel supports whichareatleast
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.
Use an 8" inside diameter solid insulated listed factory-built chimney length which has 1" or more of solid insulation.
Theminimumlengthofthis chimney section shall be 12" and will serve as a pass-throughfor the 6" diameter chimney
connector. Theremustbeat least a 12" air space between the outer wall of thechimney section and any combustible
materials. The chimney section shall be concentric with and spaced 1" away from the chimney connector 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
sizedtofitandholdthechimneysection. Fastenersusedtosecurechimneysectionsshallnotpenetratechimneyflue
liner. See Part C of Figure 8.
Alistedfactory-builtwallpass-throughsystemmaybepurchasedand installed according to the instructions packaged
with it to provide a safe method of passing the chimney connector through a combustible wall for connection to a
masonrychimney.
Additional requirements pertaining to Figure 8 and the above wall pass-through systems:
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.
All clearances and thicknesses are minimums: larger clearances and thickness are acceptable.
Achimneythimble, as shown for 3" and 4"above (PartsC and Drespectively of Figure8) shall befor types "3"and 4"
connectionstofacilitateremovalofthechimneyconnectorfor cleaning. The chimney thimble shall be of ASTM C315
fireclaywith5/8"minimumwallthickness,ormaterialorequivalentdurability. Theinsidediameterof 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.
A chimney connector to a masonry chimney, except for 2" above (Part B of Figure 8), shall extend through the wall
passthroughsystem to the inner face of the chimneyflue, but notbeyond. It does nothave to be fastenedin 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.
Any material used to close up any opening for the connector shall be noncombustible.
CHIMNEY FLUE
MINIMUMCHIMNEYCLEARANCETO BRICK
ANDCOMBUSTIBLESIS2 IN.
MINIMUM CLEARANCES 12
IN. OF BRICK ALL AROUND
CHIMNEY CONNECTOR
TO HEATER
FIRE CLAY LINER
(5/8" MIN. WALL THICKNESS)
MIN. 3-1/2" THICK BRICK
MASONRYWALL
MASONRY CHIMNEY
CONSTRUCTED TO
NFPA 211
1.
2.
3.
4.
5.
1.
2.
3.
4.
5.

12 •DRAWINGS FOR ILLUSTRATION PURPOSES ONLY•
PART B
FIGURE 8 -
(FIGURE 8 CONTIN-
UED)
AIRSPACE
9 IN. MINIMUM
FACTORY-BUILT
CHIMNEYLENGTH
MINIMUM CHIMNEY CLEARANCES FROM MASONRY TO
SHEETSTEEL SUPPORTS ANDCOMBUSTIBLES 2 IN.
CHIMNEYLENGTH
FLUSH WITH INSIDE
OFFLUE
NONSOLUBLE
REFACTORY
CEMENT
MASONRY CHIMNEY CONSTRUCTED
TONFPA211
CHIMNEY CONNECTOR
TOHEATER
MINIMUM CLEARANCE
9IN. ALL AROUND
SHEETSTEELSUPPORTS
(24GAUGE MIN. THICKNESS)
CHIMNEYFLUE
SOLIDINSULATED,LISTED
FACTORY-BUILTCHIMNEY LENGTH
USECHIMNEY MFRS.PARTS TO
ATTACHCONNECTORSECURELY
AIRSPACE
TWOVENTILATED AIR
CHANNELSEACH 1INCH.
CONSTRUCTED OF
SHEETSTEEL.
PART C
FIGURE 8
MASONRY CHIMNEY CONSTRUCTED
TONFPA211
SHEETSTEELSUPPORTS
(24GAUGE MIN. THICKNESS)
MINIMUM CHIMNEY CLEARANCES FROM MASONRY TO
SHEETSTEEL SUPPORTS ANDCOMBUSTIBLES 2 IN.
MINIMUM6 IN.GLASS
FIBERINSULATIONALL AROUND
24GAUGE
VENTILATEDTHIMBLE WITH
TWO 1 INCH AIR CHANNELS
CHIMNEYTHIMBLE
CHIMNEYFLUE
SHEETSTEELSUPPORTS
CHIMNEYSECTION
CHIMNEY
CONNECTOR
AIRSPACE
2IN.
PART D
FIGURE 8
MINIMUM CLEARANCE
2IN. ALL AROUND
CHIMNEYTHIMBLE 1 IN.AIR SPACE TO
CHIMNEYLENGTH
MASONRY CHIMNEY CONSTRUCTED
TONFPA211
SHEETSTEELSUPPORTS
(24GAUGE MIN. THICKNESS)
CHIMNEYFLUE
MINIMUM CHIMNEY CLEARANCES FROM MASONRY TO
SHEETSTEEL SUPPORTS ANDCOMBUSTIBLES 2 IN.
CONNECTION OF CHIMNEY CONNECTOR TO A MASONRY CHIMNEY WHEN CHIMNEY CONNECTOR
DOES NOT PASS THROUGH A COMBUSTIBLE WALL
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.
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
CandDof Figure 8. Remember, the chimneyconnectorshouldextendintothe chimney thimble totheinnerfaceofthe
chimneyfluebutnotbeyond; ifthechimneyconnectorisextendedthroughthechimneythimbleintothechimneyflue,
resistance to the flow of smoke and gases up the chimney will occur; that flow resistance will have an adverse affect
onthe operation and performanceoftheheater and venting system.
CHIMNEY CONNECTOR
TOHEATER
SOLIDINSULATED,LISTED
FACTORY-BUILTCHIMNEY
LENGTH (12 IN. LONG MIN.)
CHIMNEY CONNECTOR
TOHEATER

13
•DRAWINGS FOR ILLUSTRATION PURPOSES ONLY•
BLOWER & COMPONENT ASSEMBLY - FIG. 9
JUNCTIONBOX
MOUNTING
BRACKET
1. AttachtheFanLimitControlBrackettotherearofthefurnacewithfour(4)ofthe#10x1/2Tekscrewsprovided
in the parts bag.
2. InstalltheHoneywellLimitControl(1)tothebracketwithtwo(2)ofthe#10x1/2Tekscrewsprovidedintheparts
bag.
3. AttachtheJunctionBox(2)totheJunction BoxBracketusingtwo(2)#10x1/2Tekscrews. ThenMountthe
bracket to the rear of the furnace with four(4) #10 x 1/2 Tek screws. Also Attach the Conduit from the Limit
Control to the Junction Box.
4. Installthefive(5)ClipNutstothebackofthefurnace. InstalltheBlower(3)andBlowerGasket(4)tothefurnace
usingthe1/4-20x3/4boltsprovidedinthepartsbag. AttachtheremainingpieceofConduitfromthejunction
box to the Blower. Use the Wiring Diagram on the following page to wire the assembly.
5. Reattach the junction box cover.
LIMITCONTROL
MOUNTING
BRACKET
CONDUIT
4
CLIPNUTS
3
2
1
CONDUIT

14 •DRAWINGS FOR ILLUSTRATION PURPOSES ONLY•
MODEL 22AF WIRING DIAGRAM - FIG. 11
WIRE COLOR CODE
G- GREEN- GROUND
B- BLACK- POWER SUPPLY
W- WHITE- POWER SUPPLY
R1- WHITE- FAN CONTROL
R2- BLACK- FAN CONTROL
M1- BLACK- BLOWER MOTOR
M2- WHITE- BLOWER MOTOR
Fig. 11
LOAD
FAN
LINE
LOAD
LIMIT
LINE
BREAK OFF
JUMPER FOR
LOW VOLTAGE
FAN "OFF"
INDICATOR FAN "ON"
INDICATOR
LIMIT
INDICATOR
Honeywell
LIMIT SWITCH
R1R2
G
W
110
VAC,
60
HZ.
GROUND GB
W
ELECTRICAL JUNCTION BOX
M1M2
BLOWER
MOTOR
B
WIRE NUTS
IMPORTANT: POWER SUPPLY WIRING MUST NOT BE LESS THAN 90 CENTIGRADE.
Fig. 10
WIRECOLORCODE
G-GREEN-GROUND
B - BLACK - POWER SUPPLY
W - WHITE - POWER SUPPLY
R1-WHITE- FAN CONTROL
R2-BLACK-FANCONTROL
M1 - BLACK - BLOWER MOTOR
M2 - BLACK - BLOWER MOTOR
(100)
(150)
(200)

15
•DRAWINGS FOR ILLUSTRATION PURPOSES ONLY•
Please see all methods of Installation in Appendix at the rear of this booklet.
Thisisafurnace,notafreestandingstove.Youmust
directheatedairfrom12"outletawayfromthefurnace,
or it will not function properly.
1. This installation must be done by a qualified
heatingequipmentinstaller.
2. The installation is to be done in compliance with
National Fire Protection Association installation
standards: No. 89M, 90B, 211, 70 (National Electric
Code) and Uniform Mechanical Code 913, 6-4, in the
stateswhereapplicable.(Theircodeoffersconnecting
smoke pipe connectors into chimney with other fuel
burningappliances.)
3. Rooms large in comparison with size of the
appliances:
a)AWoodBurningFurnaceneedsairfor combus-
tion and circulation to house.
b)Provisionmustbemadetomakeupthisairand
not starve gas or oil furnace of combustion air.
c) Have "Authority Having Jurisdiction"
determinethatairisofadequatemakeup. (Reference
N.F.P.A.Nos.30&54,CodeforInstallationofGas&Oil
Equipment)
4.Have"AuthorityHavingJurisdiction"to inspectall
chimneysandinstallationsforadequateventingandfor
compliance with standard and local codes and regula-
tionsregardinginstallationofwoodburningappliances.
5. Installation of Supplemental Heat Application to
ExistingCentralSystem.(SeeFig.12fortypicalinstal-
lation.)
a) Place Wood Burning Furnace so that the
chimney connector will be as short as possible and
avoiding unnecessary sharp turns in the smoke pipe
connector and the installation of devices that would
create excessive resistance to the flow of flue gases.
b)LocatetheWoodBurningFurnaceascloseas
practical to the existing central hot air heating system,
maintainingclearancesasstatedonthelabellocatedon
the side of the furnace.
c) Clearances from combustible materials must
be complied with as stated on the label below the fuel
door:
Theinstallationmustbemadeonlyonanoncombustible
floor. d)Installthesmokepipeconnectortothechimney
with26-gaugepipeandelbows(tobepurchasedsepa-
rately), maintaining the proper clearances for the spe-
cific model. Make sure that the proper clearances as
stated on the label and earlier in this manual are
maintained. Seal the smoke pipe in the chimney with
furnace cement. (The chimney connector shall be se-
curely supported, and joints fastened with sheet metal
screws or rivets.)
e) Install 8" diameter heat pipe to plenum of the
centralhotairfurnace.Use26-guagepipeand connec-
tors (to be purchased separately). If central air condi-
tioningisinstalledintheplenum,installheatpipeabove
the air conditioning unit. Secure heat pipe connection
with supports and sheet metal screws.
f) Connect electrical supply in the electrical
junction box that is mounted on the back of the Wood
Burning Furnace. See Wiring Diagram (Fig. 10). Re-
move the cover from electrical junction box. Connect
powersupplywirestowiresdesignated,usingwirenuts.
Thepowercordsuppliedmaybeusedforinstallation,if
permitted by local codes and regulations. If the power
cordsuppliedcannot beused,thepower supplywiring
must be 90 degrees Centigrade in a metal cable and
shouldbe completed by a qualified installercomplying
with NFPA Standard No. 70 and local codes.
UnittoCombustible:
Front:48"
Back: 30"
Sides: 12"
Plenum to Ceiling: 2"
PipetoCombustible:
Sides: 18"
Back: 18"
NOTE: THE MAXIMUM STATIC PRESSURE AT THE CENTRAL OR COMBINED PLENUM MUST NOT
EXCEED 0.12 INCHES WATER COLUMN.
INSTALLATION

16 •DRAWINGS FOR ILLUSTRATION PURPOSES ONLY•
POWER FAILURE INSTRUCTIONS:
Operation after loss of power
Remove filter if provided.
Do not expect to keep home at normal temperatures.
Do not load fuel above bottom of feed door.
Set Fuel door and Ash door spin draft maximum closed
per the factory installed stops.
1
2
3
4
(U.S.ONLY)
FIG.11

17
•DRAWINGS FOR ILLUSTRATION PURPOSES ONLY•
CENTRAL INSTALLATION (U.S. & CANADA) (FIGURE 12)
ADD-ON INSTALLATION (U.S. ONLY) (FIGURE 13)

18 •DRAWINGS FOR ILLUSTRATION PURPOSES ONLY•
ALTERNATIVE PARALLEL INSTALLATION WIRING DIAGRAM - FIG. 14
TO GAS/OIL/ELECTRIC
TRANSFORMER
HOTBLAST
COMBINATION CONTROL
LIMIT
FAN
JUMPER IN
H
H
POWER
SUPPLY
GAS/OIL/ELECTRIC
POWER SUPPLY
JUNCTION BOX
CENTRAL
FURNACE
BLOWER
MOTOR
WOOD
FURNACE
BLOWER
MOTOR
CAUTION!
DO NOT CONNECT
PLENUM FAN CONTROL
SWITCH ACROSS FURNACE
LIMIT CONTROL.
Thisunitis certified forparallel installation withexitsting
forced air-gas or oil fired furnace (U.S. Only)

19
•DRAWINGS FOR ILLUSTRATION PURPOSES ONLY•
CAUTION
GASES THAT ARE DRIVEN BY FRESH COAL MUST BE
BURNEDORTHEYWILLACCUMULATEANDEXPLODE.
NEVERSMOTHERAFIREWHENADDINGFRESHCOAL.
CAUTION
DONOTOPERATEWITHTHEFEEDAND/ORASHDOOR
OPEN. THIS FURNACE IS DESIGNED FOR THERMO-
STATICOPERATION.OPERATIONWITHANYOFTHESE
DOORS OPEN WILL OVERHEAT AND DAMAGE THE
FURNACE.
CAUTION
NEVER USE GASOLINE, GASOLINE-TYPE LANTERN
FUEL, KEROSENE, CHARCOAL LIGHTER FLUID, OR
FLAMMABLELIQUIDSTOSTARTOR"FRESHENUP"A
FIRE IN THE FURNACE.
CAUTION
NEVER STORE FLAMMABLE LIQUIDS, ESPECIALLY
GASOLINE, IN THE VICINITY OF THE FURNACE.
OPERATING INSTRUCTIONS
The temperature in the plenum of the warm air furnace at
which the blower turns on or turns off is controlled by the
setting of the pointers in the blower limit control. These
pointers may be adjusted through their entire range of
settings to achieve the desired warm air output from the
furnace. (See Fig. 15)
1.
2.
3.
Move both pointers towards the right (counter clock-
wise)-thisincreasesthetemperaturesettingatwhich
the blower will turn on and off.
Move both pointers towards the left (clockwise) - this
decreasesthetemperaturesettingatwhichtheblower
will turn on and off.
Move pointers away or apart from each other- this
increases the time that the blower will run on each
warm cycle. FIG. 15
ADJUSTING BLOWER LIMIT CONTROL SETTINGS
BLOWER LIMIT
POINTER AND STOP
BLOWER FAN
"ON" POINTER
BLOWER FAN
"OFF" POINTER
COALFUEL
Egg size (1-3/16" or larger) bituminous coal for residential
furnaces,oranyof thespeciallypackedfireplacecoalscanbe
used. Coalwithalowashcontent(2%to6%)isrecommended.
WOODFUEL
Hardwood,18"to26"shouldbesplitandairdried(seasoned)for
6 months.
LIGHTING
1.
2.
3.
4.
Open the draft controls to "HIGH" for maximum draft.
Openthefeeddoorandplacepaperandkindlingonthegrate
for starting the fire.
Light the fire and close the feed door.
Add wood or about 15 lbs. of coal (depending on which
model) after fire is burning briskly.
Setdraftcontrolfor desired temperature.
ADDINGFUEL
Whenstartingafire,addsmallamountsoffuelinsteadofadding
largequantities of fuel. This will givemore completecombus-
tion and less build-up of tars or soot in the chimney.
Setdraftcontrol to HIGH before opening feed door.
Woodfire
Add wood to a convenient level.
CoalFire
Never smother the fire when adding coal (See Caution).
Gasaccumulation and a mildsmoky explosionwilloccur.
Add fresh kindling if the bed of coals has cooled.
Addupto20lbs.ofcoalperloading. Neveraddcoalabove
thebottomoffeeddoor opening.
Stir the coal and watch the fire. Be sure the new coal is
burningbrisklybeforeyouclosethedoorsandturnthelower
the drat control setting down.
1.
2.
3.a.
b.
c.
Shake grates vigorously 1/2" left to right to spill
ashesintotheashpan. Dothisatleastonceevery
12 hours of operation. Empty ash pan regularly.
Donotallowashestobuild-uptograteasgratewill
warp and burnout, and you might spill the ashes
whenremovingthepan.
Dispose of hot ashes properly (See note 12 on
page4).
Rotation of the handle (5 o'clock to 7 o'clock)
position will agitate coals and spill ashes into ash
pan.
Itisadvisableforyoutogetfamiliarwiththeshaker
grateoperationbeforefiring.
d.
e.
f.

20 •DRAWINGS FOR ILLUSTRATION PURPOSES ONLY•
Do not expect a furnace to draw. It is the chimney that
creates the draft. Smoke spillage into the house or exces-
sive build-up of water or creosote in the chimney would
keep it from functioning properly. Correct the problem
before using this
furnace. Possible causes are:
The connector pipe may be pushed into the chimney
too far, stopping the draft (Fig. 6).
Do not connect two furnaces or a stove and a furnace
into the same chimney flue.
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.
1.
2.
3.
If the chimney is operating too cool, water will condense in
the chimney and run back into the furnace. Creosote
formationwillberapidand mayblock thechimney.Operate
thefurnace atahigh enoughfire tokeepthe chimneywarm
preventing this condensation.
Ifthefireburnswellbutsometimes smokes orburns slowly,
it may be caused by the chimney top being lower than
anotherpartofthehouseoranearbytree.Thewindblowing
overa houseor atree, fallson topof thechimney likewater
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 2 feet higher than any point of the roof within 10 feet
(Fig. 5).
See page 28 for list of trouble shooting tips.
4.
5.
6.
A DRAFT READING OF .05 TO .06 W.C. IS SUGGESTED FOR PROPER BURNING
OF THIS UNIT WHEN USING WOOD.
SERVICE HINTS
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 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
ignited, this creosote makes an extremely hot fire.
The chimney should be inspected at least twice monthly
duringtheheatingseasontodetermineifa creosoteor soot
build-up has occurred.
If soot or creosote has accumulated, it should be removed to
reduce the risk of a chimney fire.
Chimney fires burn very hot. If the chimney catches fire, imme-
diatelycallthefiredepartment,thenreducethefirebyclosingthe
inletaircontrol.Pour a largequantityofcoarsesalt,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.
CHIMNEY MAINTENANCE