Bryant 369AAN User Manual
Installation, Start-up,
and Operating Instructions
MULTIPOISE
OIL FURNACE
NOTE: Read the entire instruction manual before starting the
installation.
This symbol → indicates a change since last issue.
TABLE OF CONTENTS
SAFETY CONSIDERATIONS.....................................................1
INTRODUCTION..........................................................................2
LOCATION....................................................................................3
General......................................................................................3
Location Relative to Cooling Equipment ................................3
INSTALLATION...........................................................................3
Air for Combustion and Ventilation........................................3
General......................................................................................4
Unconfined Space.....................................................................4
Confined Space.........................................................................4
All Air from Inside the Structure .......................................4
All Air from Outside of Structure......................................4
Duct Work Recommendations............................................5
Venting.................................................................................5
Oil Burner............................................................................6
Oil Connections...................................................................6
Barometric Draft Control....................................................6
Electrical Connections.........................................................6
Horizontal or Downflow Installation..................................6
Filters ...................................................................................7
START-UP, ADJUSTMENT, AND SAFETY CHECKOUT......7
Operational Checkout ...............................................................7
Combustion Check....................................................................7
Fan Adjustment Check ...........................................................10
Limit Control Check...............................................................10
For Year-Round Air Conditioning.........................................10
Heating....................................................................................10
Cooling....................................................................................10
Constant Blower Switch.........................................................10
MAINTENANCE.........................................................................10
General....................................................................................10
Oil Burner ...............................................................................11
Heat Exchanger and Flue Pipe...............................................11
Blower Removal .....................................................................11
SAFETY CONSIDERATIONS
FOR YOUR SAFETY
DO NOT STORE OR USE GASOLINE OR OTHER
FLAMMABLE VAPORS AND LIQUIDS IN THE VICINITY OF THIS OR ANY OTHER APPLIANCE.
DO NOT ATTEMPT TO START THE BURNER
WHEN EXCESS OIL HAS ACCUMULATED, WHEN
THE FURNACE IS FULL OF VAPOR, OR WHEN
THE COMBUSTION CHAMBER IS VERY HOT.
369AAN
Series C
Cancels: II 369A-105-4 II 369A-105-5
11-03
A97247
Fig. 1—369AAN Multipoise Oil Furnace
WARNING: For use with grade 1 or 2 Fuel Oil. Do not
use Gasoline, Crankcase Oil, or any Oil containing
Gasoline! Failure to follow this warning could lead to
sooting, fire, explosion, and/or severe bodily harm.
CAUTION: Never burn garbage or paper in the heating
system and never leave rags, paper, or any flammable
items around the unit. Failure to follow this caution will
result in minor unit or property damage.
CAUTION: These instructions are intended to be used
by qualified personnel who have been trained in installing
this type of furnace. Installation of this furnace by an
unqualified person may lead to equipment damage and/or
a hazardous condition which may lead to bodily harm.
All local and national code requirements governing installation of
oil burning equipment, wiring, and flue connections must be
followed. Some of the codes (issued by the Canadian Standards
Association, the National Fire Protection Agency, and/or the
American National Standards Institute) that may be applicable are:
—1—
A
TOP KNOCK-OUT
FOR J DIAM VENT
19″
3″
E
20″
G
KNOCK-OUT BOTH SIDES
FOR J DIAM VENT
VENT CONN
B
OIL INLET
(BOTH SIDES)
19″
PULL
C
2″
D
L
H
ELECTRICAL
CONNECTIONS
(BOTH SIDES)
.88 DIAM TYP
F
20″
K
A98037
DIMENSIONS (IN.)
UNIT SIZE ABCDEFGHJKL
036105 35 48-3/4 30-1/4 16-5/8 20 22 12 14 5 1-1/2 1-3/4
060120 39-1/2 53 32-1/4 18-3/4 24 28 12-9/32 16 6 1-5/8 1-1/2
Fig. 2—Dimensional Drawing
Understand the signal words DANGER, WARNING, CAUTION
ANSI/NFPA 31:
ANSI/NFPA 211:
ANSI/NFPA 90B:
ANSI/NFPA 70: NATIONAL ELECTRICAL CODE
CSA B139:
CAS C22.1: CANADIAN ELECTRICAL CODE
INSTALLATION OF OIL
BURNING EQUIPMENT
CHIMNEYS, FIREPLACES, VENTS,
AND SOLID FUEL BURNING APPLIANCES
WARM AIR HEATING AND AIR
CONDITIONING SYSTEMS
INSTALLATION CODE FOR
OIL BURNING EQUIPMENT
Only the latest issues of these codes should be used, and are
available from either The National Fire Protection Agency, Batterymarch Park, Quincy, MA 02269 or The Canadian Standards
Association, 178 Rexdale Blvd., Rexdale, Ontario M9W 1R3
Recognize safety information. This is the safety-alert symbol
When you see this symbol on the furnace and in instructions or
manuals, be alert to the potential for personal injury.
.
and NOTE. These words are used with the safety-alert symbol.
DANGER identifies the most serious hazards which will result in
severe personal injury or death. WARNING signifies a hazard
which could result in personal injury or death. CAUTION is used
to identify unsafe practices which would result in minor personal
injury or product and property damage. NOTE is used to highlight
suggestions which will result in enhanced installation, reliability,
or operation.
INTRODUCTION
The model 369AAN Furnaces are available in 2 sizes. Each size
unit is capable of 3 heat/airflow combinations by a simple nozzle
change. Unit 036105 covers inputs of 70,000, 91,000, and 105,000
Btuh, and unit 060120 covers inputs of 119,000, 140,000 and
154,000 Btuh. This eliminates the need to stock 6 separate units
This furnace is a multipoise unit. It may be installed in the upflow,
downflow or horizontal configuration.
The furnace is shipped as a packaged unit, complete with burner
and controls. It requires a line voltage (115 vac) connection to
control box, a thermostat hook-up as shown on wiring diagram, oil
line connection(s), adequate duct work, and connection to a
properly sized vent.
—2—
TABLE 1—MINIMUM CLEARANCES TO COMBUSTIBLE MATERIALS (IN.)
UNIT APPLICATION UPFLOW DOWNFLOW HORIZONTAL
Furnace 0 2 2
Sides
Back Service Clearance 0 1 0
Top
Bottom 00* 0*
Flue
Pipe
Front 88 24
* Use approved subbase for combustible floor.
NOTE: Adequate service clearances should be provided over and above these dimensions as required.
The air handling capacity of this furnace is designed for cooling
airflow. Refer to Table 12 for expected airflows at various external
duct static pressures.
I. GENERAL
Supply Plenum and Warm-Air Duct Within 6 ft
of Furnace
Furnace Casing or Plenum 2 2 2
Horizontal Warm-Air Duct Within 6 ft of
Furnace
Horizontally or Below Pipe 4 4 4
Vertically Above Pipe 9 9 9
12 1
22 3
The furnace should be located as close as possible to chimney or
vent in order to keep vent connections short and direct. The
furnace should also be located as near as possible to center of air
LOCATION
distribution system.
II. LOCATION RELATIVE TO COOLING EQUIPMENT
WARNING: This furnace is not water tight and is not
designed for outdoor installation. This furnace shall be
installed in such a manner as to protect electrical components from water. Outdoor installation would lead to a
hazardous electrical condition and to premature furnace
failure.
WARNING: Do not use this furnace as a construction
heater. Use of this furnace as a construction heater
exposes furnace to abnormal conditions, contaminated
combustion air, and lack of air filters. Failure to follow
this warning can lead to premature furnace failure and/or
vent failure which could result in a fire hazard and/or
bodily harm.
CAUTION: For attic installation, it is important to keep
insulation 12 in. or more away from any furnace openings. Some types of insulating materials may be combustibles and may cause a fire hazard and property damage.
This furnace is approved for reduced clearances to combustible
construction, therefore, it may be installed in a closet or similar
enclosure. Since this unit may be installed in an upflow, counterflow, or horizontal position, it may be located in a basement or on
the same level as area to be heated. In any case, unit should always
be installed level.
In a basement, or when installed on floor (as in a crawlspace), it is
recommended that unit be installed on a concrete pad that is 1 in.
to 2 in. thick.
When installed in counterflow position, furnace must not be
installed on combustible flooring, unless approved subbase is used.
Also, since flue pipe is in a counterflow position, Downflow
Conversion/Vent Guard Kit MUST be used. (Also, read page 9.)
When installed in a horizontal position, furnace may be suspended
by using an angle iron frame, as long as total weight of both
furnace and frame are allowed for in support calculations. (Other
methods of suspending are acceptable.) When installed in the
Horizontal Position, this furnace must not be installed on combustible flooring, unless the approved Horizontal Subbase is used.
The required minimum clearances for furnace are specified in
Table 1.
When installing furnace with cooling equipment for year-round
operation, the following recommendations must be followed for
series or parallel airflow:
1. In series airflow applications, coil is mounted after furnace
in an enclosure in supply-air stream. The furnace blower is
used for both heating and cooling airflow.
WARNING: The coil MUST be installed on air discharge side of furnace. Under no circumstances should
airflow be such that cooled, conditioned air can pass over
furnace heat exchanger. This will cause condensation in
heat exchanger and possible failure of heat exchanger
which could lead to a fire hazard and/or a hazardous
condition which may lead to bodily harm. Heat exchanger
failure due to improper installation may not be covered by
warranty.
2. In parallel airflow applications, dampers must be provided
to direct air over furnace heat exchanger when heat is
desired and over cooling coil when cooling is desired.
IMPORTANT: The dampers should be adequate to prevent
cooled air from entering furnace. If manually operated, dampers
must be equipped with a means to prevent operation of either
cooling unit or furnace unless damper is in full cool or heat
position.
INSTALLATION
I. AIR FOR COMBUSTION AND VENTILATION
WARNING: Installation of this furnace in an area where
it will receive contaminated combustion air must be
avoided. Such contamination would include the following: ammonia, chlorine, hydrogen sulfide, halogenated
hydrocarbons, carbon tetrachloride, cleaning solvents,
hydrochloric acid, water softening chemicals, and similar
chemicals. Failure to follow this warning will lead to
premature rusting of heat exchanger and possible premature furnace failure and/or vent failure which could result
in fire hazard and/or bodily harm.
—3—
WARNING: Do not block combustion-air openings in
the furnace. Any blockage will result in improper combustion which may result in a fire hazard and/or cause
bodily harm.
II. GENERAL
This furnace should be installed in a location in which facilities for
ventilation permit satisfactory combustion of oil, proper venting,
and maintenance of ambient temperature at safe limits under
normal conditions of use. The location should not interfere with
proper circulation of air within the confined space. (See NFPA-31,
Section 1.5.)
In addition to air needed for combustion, process air shall be
provided as required for: cooling of equipment or material,
controlling dew point, heating, drying, oxidation or dilution, safety
exhaust, and odor control.
In addition to air needed for combustion, air shall be supplied for
ventilation, including all air required for comfort and proper
working conditions for personnel.
The barometric draft regulator (included with furnace) shall be
installed in same room or enclosure as furnace in such a manner as
to prevent any difference in pressure between regulator and
combustion-air supply.
Air requirements for operation of exhaust fans, kitchen ventilation
systems, clothes dryers, and fireplaces shall be considered in
determining the adequacy of a space to provide combustion-air
requirements.
The lack of a proper amount of combustion air can lead to serious
furnace operational problems. Some of these problems are:
1. Excessive oil burner after-drip, and oil fumes.
2. Sooting.
3. Melted oil burner ignitor/relay control.
4. Air band or air turbulator settings more open than normal.
5. Lockouts on start-up.
The requirements for combustion and ventilation air depend upon
whether furnace is located in a CONFINED or UNCONFINED
space.
III. UNCONFINED SPACE
An unconfined space must have at least 50 cu ft for each 1000
Btuh of total input for all the appliances (such as furnaces, clothes
dryers, water heaters, etc.) in the space.
In unconfined spaces in buildings of conventional frame, brick, or
stone construction, infiltration MAY be adequate to provide air for
combustion, ventilation, and dilution of flue gases. This determination must be made on an individual installation basis and must
take into consideration the overall volume of unconfined space, the
number of windows and ventilation openings, the number of doors
to the outside, internal doors which can close off unconfined space,
and overall tightness of building construction. Consideration must
also be given to the amount of storage items (furniture, boxes, etc.)
within the unconfined space which take away from the air volume.
(See Table 2.)
Many new buildings and homes (and older ones that have been
weatherized) MUST BE considered as being of tight construction,
therefore, infiltration will not be sufficient to supply necessary air
for combustion and ventilation.
TABLE 2—MINIMUM FLOOR AREA
FOR UNCONFINED SPACE
369AAN FURNACE
INPUT BTUH
70,000 467
91,000 607
105,000 700
119,000 793
140,000 933
154,000 1026
MINIMUM SQ FT WITH
7-1/2 FT CEILING
A building can be considered as being of tight construction when:
• Walls and ceilings exposed to outside atmosphere have a
continuous water vapor retarder with a rating of 1 perm or less
with openings gasketed or sealed, and/or
• Weatherstripping has been added on operable windows and
doors, and/or
• Caulking or sealants are applied to areas such as joints around
window and door frames, between sole plates and floors,
between wall-ceiling joints, between wall panels, at penetrations for plumbing, electrical, and fuel lines, and at other
openings.
If combustion and ventilation air must be supplied to an unconfined space from outside, an opening with a FREE AREA of not
less than 1 sq in. per 1000 Btuh of total input of all appliances
within unconfined space (but not less than 100 sq in.) must be
provided. This opening must be located such that it cannot be
blocked at any time.
IV. CONFINED SPACE
A confined space has a volume of less than 50 cu ft per 1000 Btuh
of the total input rating for all appliances installed in that space.
When furnace is installed in a closet or enclosure, 2 ventilation
openings, with OPEN AREA as dimensioned in example below
are required for combustion air. The openings should be located
about 6 in. from top and bottom of enclosure at front of furnace.
(See Table 3.)
TABLE 3—COMBUSTION AIR
FROM CONFINED SPACE
369AAN FURNACE
INPUT BTUH
70,000-105,000 16 8
119,000 20 10
LENGTH
(IN.)
HEIGHT
(IN.)
NOTE: In calculating free area, consideration shall be given to
blocking effect of louvers, grilles, or screens protecting openings.
Screens used shall not be smaller than 1/4-in. mesh and shall be
readily accessible for cleaning. If free area through a louver or
grille is known, it shall be used in calculating size and free area
specified. If design and free area are not known, it may be assumed
that wood louvers have 20 percent free area and metal louvers and
grilles have 60 percent free area. Louvers shall be fixed in open
position or interlocked with furnace so they open automatically at
furnace start-up and remain open during furnace operation.
The size of the openings depends upon whether the air comes from
outside of the structure or an unconfined space inside the structure.
A. All Air from Inside the Structure
For a confined space, where air is taken from an interior space, 2
permanent openings of equal area are required. One opening must
be within 12 in. of ceiling and the other within 12 in. of floor. Each
opening must have a free area of at least 1 sq in. per 1000 Btuh of
total input rating but not less than 100 sq in. (See Table 4.)
B. All Air from Outside of Structure
If outside air is supplied to a confined space, then the 2 openings
must be equal and located as above.
—4—
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