United States Stove 22AF User Manual
Model 22AF
OWNER'S MANUAL
SOLID FUEL
WARM AIR FURNACE
*FOR INSTALLATION AS A CENTRAL FURNACE
*CERTIFIED UNDER ANSI/UL 391 & CAN/CSA-B366.1-M91
Keeping North America WKeeping North America W
Keeping North America W
Keeping North America WKeeping North America W
CAUTION:
READ ALL INSTRUCTIONS CAREFULLY BEFORE STARTING THE
INSTALLATION OR OPERATING
THE FURNACE
UNITED STATES STOVE COMPANY
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227 Industrial Park Road
P.O.Box 151
South Pittsburg, TN 37380
(423) 837-2100
•DRAWINGS FOR ILLUSTRATION PURPOSES ONLY•
arm Since 1869arm Since 1869
arm Since 1869
arm Since 1869arm Since 1869
IMPROPER INSTALLATION MAY VOID
YOUR WARRANTY
DO NOT USE THIS FURNACE
IN A MOBILE HOME OR TRAILER
C
R
US
1
851533A
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
preserve our wood supply. Plant at least one tree each year. Future generations
will thank you.
NOTE: YOUR UNIT MUST BE INSTALLED BY A QUALIFIED
FURNACE INSTALLER. IMPROPER INSTALLATION COULD
VOID YOUR WARRANTY!
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
2
•DRAWINGS FOR ILLUSTRATION PURPOSES ONLY•
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).
Electrical Wiring
6" Draft Regulator
1/2" Conduit
(Conduit Connectors)
Furnace Cement (Manufacturer Recommends:
Rutland Black - Code 78 or Equivalent)
Plenum and Duct Work as Required
CAUTION
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.
WARM-AIR SUPPLY-DUCT SYSTEM MUST BE CONSTRUCTED ONLY OF METAL
CAUTION!
INSPECT FLUE PIPES, FLUE PIPE JOINTS AND FLUE PIPE SEALS
REGULARLY TO ENSURE THAT SMOKE AND FLUE GASES ARE NOT
DRAWN INTO, AND CIRCULATED BY, THE AIR CIRCULATION SYSTEM.
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.
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.
REFER TO MARKINGS ON THE APPLIANCE FOR ADDITIONAL INFORMATION.
•DRAWINGS FOR ILLUSTRATION PURPOSES ONLY•
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. This installation must comply with their rulings.
2.
3.
4.
5.
6.
7.
8.
9.
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
a building.
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
the furnace.
10.
11.
12.
13.
4
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
and Equipment.
Keep the ashpit section free of excess ashes. Do not allow ashes to stack higher than the sides of the
ash pan.
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.
•DRAWINGS FOR ILLUSTRATION PURPOSES ONLY•
RULES FOR SAFE INSTALLATION AND OPERATION
14.
15.
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.
HOW THE FURNACE FUNCTIONS
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 furnace that is listed or certified in accordance with
nationally recognized safety standards and
equipped with the required controls and other
safety features and which has been installed with
appropriate standards of National Fire Protection
Association with installation clearances specified
in the furnace nameplate marking. The installation
must be accomplished by a qualified agency (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 heating
appliances, who is experienced in such 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's installation instructions furnished with the solid fuel furnace.
The chimney connector of the furnace is to be
installed to provide clearances to combustible
material not less than specified in the individual
classifications and marked on the furnace. The
chimney connector must be connected to a chimney suitable for use with residential type or building
heating appliances which burn solid fuel.
The furnace is designed to operate in either
parallel or series air flow arrangement with the
central furnace or as a central furnace.
CENTRAL FURNACE INSTALLATION: As a central furnace, the unit functions independently of
any other system. The blower will come on when
the plenum temperature reaches the setting on the
blower control.
•DRAWINGS FOR ILLUSTRATION PURPOSES ONLY•
PARALLEL INSTALLATION: The design is such
that when the blower comes on, the blower on the
central system also comes on.
The blower will only come on when the
temperature in the plenum has reached the setting
on the blower control. This is to insure that there is
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 system will operate by the burner igniting and the
blower coming on. It is possible that both systems
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
order to reduce the demand on your existing central
heating system. This unit has an Optional forced
draft kit that operates from a wall thermostat.
When the temperature falls below the setting on the
wall thermostat, the forced draft will come on. (U.S.
Stove Option 11 DIK)
The warm air supply outlet of the Ashley
furnace shall not be connected to the cold air return
inlet of the central furnace because the possibility
exists of components of the central furnace overheating and causing the central furnace to operate
other than is intended.
SERIES INSTALLATION: (U.S. & CANADA)
This type of installation uses only the blowers of
the existing central furnace. The solid fuel fan/limit
control must also control the functions of the
existing furnace. All electrical power must come
from a single branch circuit.
5
MODEL 22AF DIMENSIONS
FIG. 1
6
•DRAWINGS FOR ILLUSTRATION PURPOSES ONLY•
LOCATING THE FURNACE
1.
The furnace should be located in the same room
as the central system and as close as possible,
but no 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. See Fig. 2.
The unit will require installation with the
2.
following clearances:
Unit to sidewall........... 12" (305 mm)
Unit to backwall ......... 30" (760 mm)
Chimney connector pipe to sidewall
.................................. 18" (530 mm)
Chimney connector pipe to backwall
.................................. 18" (460 mm)
Hot air ducts to combustibles
.................................. 2" (50 mm)
NOTE: Install only on a noncombustible
floor. (REFER TO FIG. 2 & 3)
3.
Place the furnace on a noncombustible floor.
FIG. 2
4.
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
you wish to the wall. If the wall is only faced with
brick or stone, treat it as a combustible wall.
FIG. 3
•DRAWINGS FOR ILLUSTRATION PURPOSES ONLY•
7
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 APPLIANCE.
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.
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
•DRAWINGS FOR ILLUSTRATION PURPOSES ONLY•
RULES FOR CONNECTOR PIPE INSTALLATION
The crimped end of the chimney connector
1.
fits inside the furnace flue collar. Install
additional chimney connector 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. (minimum 24 gauge) black
chimney connector.
Slope any horizontal pipe upward toward the
2.
chimney at least 1/4 inch for each foot of
horizontal run.
You must have at least 18 inches of
3.
clearance between any horizontal piping
and the ceiling. (See Fig. 3)
The chimney connector must not extend
4.
into the chimney flue (See Fig. 6).
Seal each chimney connector pipe joint with
5.
furnace cement. Also seal the pipe at the
chimney.
Use 3 sheet metal screws at each chimney
6.
pipe joint to make the piping rigid.
The chimney connector may include a sec-
7.
tion for a barometric draft regulator between
the furnace and the chimney (Fig. 4, 5, 6, &
7). The barometric draft regulator must be
installed in the same room (same pressure
zone) as the furnace.
Install the barometric draft regulator strictly
8.
in accordance with the instructions that are
provided with the barometric draft regulator.
A solid damper can be placed between the
barometric draft regulator and the chimney.
9.
(Fig. 4, 5, 6, & 7)
FIG. 6
Adjusting the
Barometric Draft Regulator
Drill a hole in the chimney connector within
1.
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
2.
have been made.
Use a manometer to measure the draft in
3.
the flue. (U.S. Stove Model DG-26)
Adjust the barometric draft regulator to
4.
obtain a draft of 0.05" - 0.06" W.C. under
stable conditions.
•DRAWINGS FOR ILLUSTRATION PURPOSES ONLY•
FIG. 7
9
CONNECTION OF CHIMNEY CONNECTOR TO A MASONRY CHIMNEY
THROUGH A COMBUSTIBLE WALL
Figure 8 shows how to connect the chimney connector of a heater to a masonry chimney through a combustible wall.
There are five allowable ways that a chimney connector can be connected to a masonry chimney by passing
through a combustible wall. NFPA Standard 211 allows the following wall pass-through systems.
FIGURE 8 CONNECTION OF CHIMNEY CONNECTOR TO A MASONRY CHIMNEY THROUGH A COMBUSTIBLE WALL
MASONRY CHIMNEY
CONSTRUCTED TO
NFPA 211
CHIMNEY FLUE
SEE PARTS A, B, C,
D, AND E OF THIS
FIGURE FOR
OPTIONS.
CEILING
CHIMNEY CONNECTOR
TO
HEATER
COMBUSTIBLE WALL
AIRTIGHT
CLEANOUT
DOOR
10
FLOOR
PROTECTOR
(FIGURE 8 CONTINUED ON NEXT PAGE)
•DRAWINGS FOR ILLUSTRATION PURPOSES ONLY•
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