Bryant 368RAN Series A Installation, Start-up, And Operating Instructions Manual
Installation, Start-up,
and Operating instructions
LOW-BOY
OIL FURNACE
NOTE: Read the entire instruction manual before starting the
installation.
TABLE OF CONTENTS
Safety Considerations.....................................................................1
INTRODUCTION..........................................................................2
LOCATION....................................................................................3
General......................................................................................3
Location Relative to Cooling Equipment ................................3
INSTALLATION...........................................................................4
Air for Combustion and Ventilation........................................4
General......................................................................................4
Unconfined Space.....................................................................4
Confined Space.........................................................................4
All Air from Inside the Structure .......................................5
All Air from Outside of Structure......................................5
Duct Work Recommendations............................................5
Venting.................................................................................5
Oil Burner............................................................................6
Oil Connections...................................................................6
Barometric Draft Control....................................................6
Electrical Connections.........................................................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
MAINTENANCE.........................................................................12
General....................................................................................12
Oil Burner ...............................................................................12
Heat Exchanger and Flue Pipe...............................................12
Blower Removal .....................................................................12
368RAN
Series A
Cancels: II 368R-36-1
10-04
A96280
Fig. 1—368RAN Low-Boy Oil Furnace
WARNING: CARBON MONOXIDE POISONING,
FIRE, EXPLOSION HAZARD
Failure to follow this warning could lead to sooting, fire,
explosion, and/or severe bodily harm.
For use with grade 1 or 2 Fuel Oil. Do not use Gasoline,
Crankcase Oil, or any Oil containing gasoline!
CAUTION: FIRE HAZARD
Failure to follow this caution may result in fire and
property damage.
Never burn garbage or paper in the heating system and
never leave rags, paper, or any flammable items around
the unit.
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.
CAUTION: UNIT RELIABILITY HAZARD
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.
—1—
VENT
CONN
21 1⁄4″
20"20"20"
10"
3"
D
C
E
B
A
DIMENSION (IN.)
UNIT
SIZE
036105 21-1/4 53-3/4 31-1/2 26-1/2 20 20 5
060120 21-1/4 60-5/32 34-3/4 28-11/32 22 24 6
Width
UNIT DIMENSIONS
Depth Height
AB C D E
FLUE
HEIGHT
RETURN
OPENING
SUPPLY
OPENING
Fig. 2—Dimensional Drawing
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:
could result in personal injury or death. CAUTION is used to
identify unsafe practices which may 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.
ANSI/NFPA 31: INSTALLATION OF OIL BURNING EQUIPMENT
INTRODUCTION
ANSI/NFPA 211: CHIMNEYS, FIREPLACES, VENTS, AND
SOLID FUEL BURNING APPLIANCES
ANSI/NFPA 90B: WARM AIR HEATING AND AIR CONDITIONING SYSTEMS
ANSI/NFPA 70: NATIONAL ELECTRICAL CODE
CSA B139: INSTALLATION CODE FOR OIL BURNING
EQUIPMENT
CAS C22.1: CANADIAN ELECTRICAL CODE
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.
Understand the signal words DANGER, WARNING, and CAU-
The model 368RAN Furnaces are available in 2 sizes. Each size
unit can be fired at 3 different rates by a simple nozzle change.
Unit 036105 covers input ranges from 91,000 to 105,000 Btuh,
unit 060120 covers input ranges from 119,000 to 154,000 Btuh.
This furnace is a Low-Boy unit. It may be operated only in the
upflow 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.
The air handling capacity of this furnace is designed for cooling
airflow. Refer to Table 13 of 14 for expected airflows at various
external duct static pressures.
TION. 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
A98009
VENT
CONN
—2—
LOCATION
I. GENERAL
WARNING: ELECTRICAL SHOCK, FIRE OR
UNIT DAMAGE HAZARD
Failure to follow this warning could result in property
damage or personal injury or death.
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.
CAUTION: UNIT DAMAGE HAZARD
This oil furnace may be used for construction heat provided that:
-The furnace operating conditions, including ignition, input rate, temperature rise and venting, are verified per instructions in this manual.
-The furnace is permanently installed with all electrical wiring, piping, venting and ducting installed according to these installation
instructions. A return air duct is provided, sealed to the furnace casing, and terminated outside the space containing the furnace. This
prevents a negative pressure condition as created by the circulating air blower, causing a flame rollout and/or drawing combustion
products into the structure.
-The furnace is controlled by a thermostat. It may not be ″hot wired″ to provide heat continuously to the structure without thermostatic
control.
-Clean outside air is provided for combustion. This is to minimize the corrosive effects of adhesives, sealers and other construction
materials. It also prevents the entrainment of drywall dust into combustion air, which can cause fouling and plugging of furnace
components.
-The temperature of the return air to the furnace is no less than 55°F, with no evening setback or shutdown. The use of the furnace while
the structure is under construction is deemed to be intermittent operation per our installation instructions.
-The air temperature rise is within the rated rise range on the furnace rating plate, and the firing rate has been set to the nameplate value.
-The filters used to clean the circulating air during the construction process must be either changed or thoroughly cleaned prior to
occupancy.
-The furnace, ductwork and filters are cleaned as necessary to remove drywall dust and construction debris from all HVAC system
components after construction is completed.
This furnace is approved for reduced clearances to combustible
construction, therefore, it may be installed in a closet or similar
enclosure. 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.
The required minimum clearances for this furnace are specified in
Table 1. 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 distribution system.
II. LOCATION RELATIVE TO COOLING EQUIPMENT
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
used for both heating and cooling airflow.
WARNING: UNIT DAMAGE HAZARD
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.
TABLE 1—MINIMUM CLEARANCES TO
COMBUSTIBLE MATERIALS (IN.)
UNIT APPLICATION LOW-BOY
Furnace 1
Sides
Supply Plenum and Warm-Air Duct Within 6 ft
of Furnace
Back Service Clearance 19
Furnace Casing or Plenum 2
Top
Horizontal Warm-Air Duct Within 6 ft of
Furnace
Bottom* 0
Horizontally or Below Pipe 4
Flue
Pipe
Vertically Above Pipe 9
Front 8
* Floor may be combustible.
NOTE: Adequate service clearances should be provided over and abovethese
dimensions as required.
1
2
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.
—3—
INSTALLATION
I. AIR FOR COMBUSTION AND VENTILATION
WARNING: CARBON MONOXIDE POISONING
AND UNIT CORROSION HAZARD
Failure to follow this warning could lead to premature
rusting of heat exchanger and possible premature furnace
failure and/or vent failure which could result in fire
hazard and/or personal injury or death.
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.
WARNING: CARBON MONOXIDE POISONING
AND FIRE HAZARD
Failure to follow this warning could result in property
damage, personal injury or death.
Do not block combustion-air openings in the furnace.
Any blockage could result in improper combustion.
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 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 the 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. (Refer to Table 2.)
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 determi-
TABLE 2—MINIMUM FLOOR AREA
FOR UNCONFINED SPACE
368RAN 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
nation 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.
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.
A building can be considered as being of tight construction when:
1. 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
2. Weatherstripping has been added on operable windows and
doors, and/or
3. 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 can not 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.
(Refer to Table 3.)
TABLE 3—COMBUSTION AIR FROM CONFINED SPACE
368RAN FURNACE
INPUT BTUH
70,000-105,000 16 8
119,000-154,000 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 design of
louver or grille is known, it shall be used in calculating size design
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.
—4—
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. (Refer to Table 4.)
TABLE 4—COMBUSTION AIR FROM
UNCONFINED SPACE
368RAN FURNACE
INPUT BTUH
70,000 100
91,000 100
105,000 105
119,000 119
140,000 140
154,000 154
FREE AREA PER
OPENING
(SQ IN.)
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.
1. If combustion air is taken through a permanent opening
directly communicating with the outdoors, the opening shall
have a minimum free area of 1 sq in. per 4000 Btuh of total
input rating for all equipment in the enclosure.
2. If combustion air is taken from outdoors through vertical
ducts, the openings and ducts MUST have at least 1 sq in.
of free area per 4000 Btuh of the total input for all
equipment within the confined space. (Refer to Table 5.)
TABLE 5—COMBUSTION AIR FROM
OUTDOORS THROUGH VERTICAL DUCTS
368RAN FURNACE
INPUT BTUH
70,000 17.5 5
91,000 22.8 6
105,000 26.3 6
119,000 29.8 6
140,000 35.0 6
154,000 38.5 6
FREE AREA PER
OPENING
(SQ IN.)
ROUND PIPE
(IN. DIAM)
3. If combustion air is taken from outdoors through horizontal
ducts, the openings and ducts MUST have at least 1 sq in.
of free area per 2000 Btuh of the total input for all
equipment within the confined space. (Refer to Table 6.)
TABLE 6—COMBUSTION AIR FROM OUTDOORS
THROUGH HORIZONTAL DUCTS
368RAN FURNACE
INPUT BTUH
70,000 35.0 7
91,000 45.5 8
105,000 52.5 9
119,000 59.5 9
140,000 70.0 10
154,000 77.0 10
FREE AREA PER OPENING
(SQ IN.)
ROUND PIPE
(IN. DIAM)
When ducts are used to supply air, they must be of the same cross
sectional area as free area of openings to which they connect.
The minimum dimension of rectangular air ducts must not be less
than 3 in.
C. Duct Work Recommendations
WARNING: CARBON MONOXIDE POISONING
HAZARD
Failure to follow this warning could result in personal
injury or death.
When supply ducts carry air circulated by furnace to areas
outside spaces containing furnace, return air MUST also
be handled by a duct sealed to furnace casing and
terminating outside space containing furnace.
CAUTION: FIRE HAZARD or UNIT MAY
NOT OPERATE
Failure to follow this caution may result in property
damage or intermittent unit operation.
Return-air grilles and warm air registers MUST NOT be
obstructed.
The proper sizing of warm air ducts is necessary to ensure
satisfactory furnace operation. Duct work should be in accordance
with the latest editions of NFPA-90A (Installation of Air Conditioning and Ventilating Systems) and NFPA-90B (Warm Air
Heating and Air Conditioning Systems) or Canadian equivalent.
The supply duct work should be attached to flanged front opening
provided at discharge end of furnace. The return-air duct work
should be attached to flanged rear opening of furnace. See Fig. 2
for dimensions of these openings.
NOTE: The back (blower access opening) should not be used for
return air.
The following recommendations should be followed when installing duct work:
1. Install locking-type dampers in all branches of individual
ducts to balance out system. Dampers should be adjusted to
impose proper static at outlet of furnace
2. A flexible duct connector of noncombustible material
should be installed at unit on both supply- and return-air
systems. In applications where extremely quiet operation is
necessary, the first 10 ft (if possible) of supply and return
ducts should be internally lined with acoustical material.
3. In cases where return-air grille is located close to fan inlet,
there should be at least one 90° air turn between fan inlet
and grille. Further reduction in sound level can be accomplished by installing acoustical air turning vanes or lining
duct as described in item 2 above.
4. When a single air grille is used, duct between grille and
furnace must be the same size as return opening in furnace.
D. Venting
Venting of furnace should be to the outside and in accordance with
local codes or requirements of local utility.
OIL-FIRED APPLIANCES SHALL BE CONNECTED TO
FLUES HAVING SUFFICIENT DRAFT AT ALL TIMES TO
ENSURE SAFE AND PROPER OPERATION OF APPLIANCE.
For additional venting information, refer to ANSI/NFPA 211
Chimney, Fireplaces, Vents, and Solid Fuel Burning Appliances
and/or CSA B139 Installation Code.
This furnace is certified for use with Type ″L″ vent (maximum flue
gas temperature 575°F).
VENT SYSTEM INSPECTION
Before furnace is installed, it is highly recommended that any
existing vent system be completely inspected.
—5—
Loading...