Bryant Furnace 362AAN User Manual

installation, start-up,  
362AAN  
Series B  
and operating instructions  
LOW-BOY  
OIL-FIRED FURNACE  
Cancels: II 362A-75-1  
II 362A-105-1  
8-96  
NOTE: Read the entire instruction manual before starting the  
SAFETY CONSIDERATIONS  
installation.  
This symbol indicates a change since the last issue.  
FOR YOUR SAFETY  
DO NOT STORE OR USE GASOLINE OR  
OTHER FLAMMABLE VAPORS AND LIQ-  
UIDS IN THE VICINITY OF THIS OR ANY  
OTHER APPLIANCE.  
Index  
Page  
SAFETY CONSIDERATIONS..................................................1-2  
Minimum Clearance to Combustibles......................................2  
INTRODUCTION..........................................................................2  
LOCATION ................................................................................2-3  
Air for Combustion and Ventilation.....................................2-3  
Duct Work Recommendations..................................................3  
VENTING INSTRUCTIONS ........................................................4  
Pre-Installation Vent System Inspection..................................4  
Masonry Chimney.....................................................................4  
Factory-Built Chimneys............................................................4  
Horizontal Venting....................................................................4  
OIL BURNER................................................................................4  
OIL CONNECTIONS....................................................................4  
BAROMETRIC DRAFT CONTROL ...........................................4  
ELECTRICAL................................................................................5  
FILTERS ........................................................................................5  
OPERATIONAL CHECKOUT..................................................5-6  
Start-Up.....................................................................................5  
Recommended Installation Practices and  
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.  
WARNING: For use with grade 2 Fuel Oil maximum.  
Do not use Gasoline, Crankcase Oil, or any Oil contain-  
ing 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.  
Combustion Check...........................................................5-6  
Fan Adjustment Check .............................................................6  
Limit Control Check.................................................................6  
For Year-Round Air Conditioning...........................................6  
Heating ......................................................................................6  
Cooling......................................................................................6  
Constant Blower Switch...........................................................6  
MAINTENANCE......................................................................6-11  
General ......................................................................................6  
Oil Burner..............................................................................6-7  
Heat Exchanger and Flue Pipe..............................................7-8  
Blower Oiling and Removal.....................................................8  
Keeping Filters Clean...............................................................8  
Airflow Data .............................................................................8  
Dimensional Drawing...............................................................9  
Barometric Damper Locations................................................10  
Wiring Diagram ......................................................................11  
USER’S INFORMATION...........................................................12  
Here’s How Your Heating System Works ............................12  
Preparing Your Furnace For Operation .................................12  
Lighting Your Furnace ...........................................................12  
Turning Off Your Furnace .....................................................12  
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:  
ANSI/NFPA 31  
INSTALLATION OF OIL BURNING  
EQUIPMENT  
ANSI/NFPA 211 CHIMNEYS, FIREPLACES, VENTS,  
AND SOLID FUEL BURNING  
APPLIANCES  
ANSI/NFPA 90B WARM AIR HEATING AND AIR  
CONDITIONING SYSTEMS  
ANSI/NFPA 70  
CSA B139  
NATIONAL ELECTRICAL CODE  
INSTALLATION CODE FOR  
OIL BURNING EQUIPMENT  
CSA C22.1  
CANADIAN ELECTRICAL CODE  
—1—  
 
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.  
5. Lockouts on start-up.  
II. DUCT WORK RECOMMENDATIONS  
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 Condi-  
tioning and Ventilating Systems) and NFPA-90B (Warm Air  
Heating and Air Conditioning Systems) or Canadian equivalent.  
If combustion and ventilation air must be supplied to an uncon-  
fined 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.  
The supply duct work should be attached to flanged opening  
provided at discharge end of furnace. See Fig. 5 for dimensions of  
this opening.  
The following recommendations should be followed when install-  
ing duct work:  
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.  
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.  
For Example:  
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.  
UNIT  
SIZE  
LENGTH  
(IN.)  
HEIGHT  
(IN.)  
036105  
048125  
060155  
18  
20  
20  
9
10  
10  
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 accom-  
plished by installing acoustical air turning vanes or lining  
duct as described in item 2 above.  
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.  
4. When a single air grille is used, duct between grille and  
furnace must be the same size as return opening in furnace.  
If outside air is supplied to a confined space, then the 2 openings  
must be equal and located as above. The free area of each must be:  
CAUTION: Return-air grilles and warm air registers  
MUST not be obstructed.  
1. One sq in. per 4000 Btuh of total input rating when air is  
directly communicated from outdoors.  
2. One sq in. per 4000 Btuh of total input rating when air is  
brought in through vertical ducts.  
WARNING: 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.  
Incorrect duct work termination and sealing will create a  
hazardous condition which could lead to bodily harm.  
3. One sq in. per 2000 Btuh of total input rating when air is  
transferred through horizontal ducts.  
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.  
When installing furnace with cooling equipment for year-round  
operation, the following recommendations must be followed for  
series or parallel airflow:  
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.  
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 dis-  
charge 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.  
WARNING: Do not block combustion-air openings in  
the furnace. Any blockage will result in improper com-  
bustion which may result in a fire hazard and/or cause  
bodily harm.  
The lack of a proper amount of combustion air can lead to serious  
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.  
furnace operational problems. Some of these problems are:  
1. Excessive oil burner after drip and oil fumes.  
2. Sooting.  
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. Melted oil burner couplings and/or ignitor/relay control.  
4. A condition where air band or air shutter settings must be  
more open than normal to achieve proper combustion.  
—3—  
 
VENTING INSTRUCTIONS  
Venting of furnace should be to the outside and in accordance with  
local codes or requirements of local utility.  
9. The chimney must extend 3 ft above highest point where it  
passes through the roof of a building and at least 2 ft higher  
than any portion of a building within a horizontal distance  
of 10 ft. It shall also be extended at least 5 ft above highest  
connected equipment flue collar.  
OIL-FIRED APPLIANCES SHALL BE CONNECTED TO  
FLUES HAVING SUFFICIENT DRAFT AT ALL TIMES TO  
ENSURE SAFE AND PROPER OPERATION OF APPLIANCE.  
10. Check local codes for any variance.  
For additional venting information, refer to ANSI/NFPA 211  
Chimney, Fireplaces, Vents, and Solid Fuel Burning Appliances  
and/or CSA B139 Installation Code.  
III. FACTORY-BUILT CHIMNEYS  
Listed factory-built chimneys may be used. Refer to chimney  
manufacturer’s instructions for proper installation.  
This furnace is certified for use with Type "L" vent (maximum flue  
gas temperature 575°F).  
IV. HORIZONTAL VENTING  
This furnace may be vented horizontally through an outside wall  
when installed with 1 of the following auxiliary inducer blowers:  
I. PRE-INSTALLATION VENT SYSTEM INSPECTION  
Before furnace is installed, it is highly recommended that any  
existing vent system be completely inspected.  
Tjernlund Products, Inc. Model SS1 (SS1C required in Canada)  
available from: Tjernlund Products, Inc.  
1601 Ninth Street  
For any chimney or vent, this should include the following:  
1. Inspection for any deterioration in chimney or vent. If  
deterioration is discovered, chimney must be repaired or  
vent must be replaced.  
White Bear Lake, MN 55110-6795  
(612) 426-2993  
or  
2. Inspection to ascertain that vent system is clear and free of  
obstructions. Any blockage must be cleared before install-  
ing furnace.  
Fields Controls Model SWGII-5  
(with a CK-60 or CK-61 control kit)  
available from: Fields Controls Company  
2308 Airport Road  
3. Cleaning chimney or vent if previously used for venting a  
solid fuel burning appliance or fireplace.  
Kinston, NC 28051  
(919) 522-3031  
4. Confirming that all unused chimney or vent connections are  
properly sealed.  
NOTE: In both cases, the 24-v wiring schematic included with  
inducer is the recommended wiring setup.  
5. Verification that chimney is properly lined and sized per the  
applicable codes. (Refer to list of codes in Safety Consid-  
erations section.)  
The use of either inducer can create a negative pressure in the area  
where furnace is located if the proper combustion-air openings are  
not available. This negative pressure can lead to excessive heat  
being retained in heat exchanger, coking, and fumes. Refer to  
NFPA-31 Section 1.5 for proper combustion-air requirements.  
II. MASONRY CHIMNEY  
This furnace can be vented into an existing masonry chimney. This  
furnace must not be vented into a chimney servicing a solid fuel  
burning appliance. Before venting furnace into a chimney, the  
chimney MUST be checked for deterioration and repaired if  
necessary. The chimney must be properly lined and sized per local  
or national codes.  
CAUTION: USE METALLIC VENT PIPE ONLY!  
PLASTIC VENTING MATERIALS ARE PROHIB-  
ITED!  
If furnace is vented into a common chimney, the chimney must be  
of sufficient area to accommodate the total flue products of all  
appliances vented into chimney.  
OIL BURNER  
This furnace is supplied with a high-pressure atomizing retention  
head type burner (for use with not heavier than grade 2 Fuel Oil).  
The air tube length, from face of mounting plate to extreme face of  
end cone, should be as shown in Table 3.  
The following requirements are provided for a safe venting  
system:  
1. Be sure that chimney flue is clear of any dirt or debris.  
2. Be sure that chimney is not servicing an open fireplace.  
TABLE 3—OIL BURNER AIR TUBE LENGTH  
UNIT SIZE  
036105  
LENGTH (IN.)  
3. Never reduce pipe size below minimum certified furnace  
pipe size as shown in Table 2.  
5
5
7
048125  
TABLE 2—MINIMUM CERTIFIED FURNACE PIPE SIZE  
(IN.)  
060155  
UNIT SIZE  
036105  
MINIMUM PIPE DIAMETER  
OIL CONNECTIONS  
Complete instructions for installation of fuel oil piping will be  
found in oil burner Installation Instructions included with furnace.  
5
5
6
048125  
060155  
Oil line entry holes are provided in side panels. Two holes are  
provided in each location so that a 2-pipe system may be used if  
desired.  
4. All pipe should be supported using proper clamps and/or  
straps. These supports should be at least every 4 ft.  
A properly sized oil filter should be used with all oil burners and  
should be installed as close to burner as possible. For a 2-pipe  
system, a minimum capacity of 25 gph is needed.  
5. All horizontal runs of pipe should have at least 1/4-in. per  
ft of upward slope.  
6. All runs of pipe should be as short as possible with as few  
turns as possible.  
BAROMETRIC DRAFT CONTROL  
The barometric draft control shipped with furnace MUST be used  
with furnace to ensure proper operation. Instructions for installing  
control are packed with control. Refer to Fig. 6 for suggested  
locations.  
7. Seams should be tightly joined and checked for leaks.  
8. The flue pipe must not extend into chimney but be flush  
with inside wall.  
—4—  
 
ELECTRICAL  
DO NOT TAMPER WITH UNIT OR CONTROLS—CALL  
YOUR SERVICE TECHNICIAN.  
The appliance must be installed in accordance with current  
ANSI/NFPA 70 National Electrical Code, CSA C22.1 Canadian  
Electrical Code Part 1, and/or local codes.  
II. RECOMMENDED INSTALLATION PRACTICES AND  
COMBUSTION CHECK  
The control system depends on correct polarity of power supply.  
Connect HOT wire (H) and NEUTRAL wire (N) as shown in Fig.  
7.  
In order to obtain optimum performance from oil burner, the  
following setup procedures must be followed:  
1. A test kit (Bacharach No. 5022 kit or equivalent) to measure  
smoke, stack draft, over-fire draft, CO2, and stack tempera-  
tures MUST be used in order to obtain proper air band  
setting. Although all of the above measurements are re-  
quired for optimum setup and efficiency data, the most  
important readings that must be taken are smoke number,  
over-fire draft, and stack draft.  
A separate line voltage supply MUST be used with a fused  
disconnect switch or HACR-type circuit breaker between main  
power panel and unit. (See Fig. 7.) Disconnecting means must be  
within sight from furnace.  
WARNING: The unit cabinet must have an uninter-  
rupted or unbroken electrical ground to minimize per-  
sonal injury if an electrical fault should occur. A green  
ground screw is provided in control box for this connec-  
tion.  
2. The proper smoke number has been established by engi-  
neering tests to be between 0 and 1. This degree of smoke  
emission is commonly referred to as a "Trace" of smoke. It  
is recommended to use a Bacharach true spot smoke test set  
or equivalent.  
Use only copper wire for 115-v supply service to unit.  
3. In order to ensure proper draft through furnace, a baromet-  
ric draft regulator (supplied with furnace) must be installed  
as close to outlet of furnace as possible.  
Metallic conduit (where required/used) may terminate at side panel  
of unit. It is not necessary to extend conduit inside unit from side  
panel to control box.  
In order for this device to function properly, barometric  
damper must be mounted with hinge pins horizontal and  
face of damper vertical. (See instructions included with  
damper.) The draft regulator should be adjusted after  
furnace has been firing for at least 10 minutes, and stack  
draft should be measured and set between -0.025 and -0.035  
in. wc. The draft should be checked with a Bacharach MZF  
draft gage or equivalent.  
When replacing any original furnace wiring, use only 105°C No.  
16 AWG copper wire.  
Instructions for wiring thermostat (field supplied) are packed in  
thermostat box. Make thermostat connections as shown in Fig. 7 at  
24-v terminal board on control box.  
When installing optional accessories to this appliance, follow  
manufacturer’s Installation Instructions included with accessory.  
Other than wiring for thermostat, wire with a minimum of type "T"  
insulation (63°F rise) must be used for accessories.  
4. The over-fire draft, which is taken through hole provided in  
observation door, is a measurement necessary to determine  
if there is a blockage between oil burner and flue outlet.  
Two 1/4-in. quick-connect terminals marked EAC and N5 are  
provided for electronic air cleaner (EAC) connection. (See Fig. 7.)  
These terminals are energized with 115v (0.5-amp maximum)  
during blower motor operation.  
There should be a pressure drop of between 0.005 and 0.015  
in. wc through furnace. This would set the range of the  
over-fire draft between -0.01 and -0.03 in. wc. A reading  
above -0.01 in. wc (for example +0.1 in. wc) would indicate  
that furnace is in an extremely high-pressure condition in  
primary section. This condition may be caused by excessive  
combustion air due to air band being too wide open or a lack  
of flue draft (chimney effect) or some other blockage, such  
as soot, in secondary section of heat exchanger.  
Two 1/4-in. quick-connect terminals marked HUM and N6 are  
provided for 115-v humidifier connection. (See Fig. 7.) These  
terminals are energized with 115v (0.5-amp maximum) during any  
call for heat.  
FILTERS  
5. The CO2 and stack temperature instruments enable you to  
obtain data required to determine thermal efficiency of  
furnace.  
WARNING: Never operate unit without a filter or with  
filter access door removed. Failure to adhere to this  
warning could lead to a hazardous condition which could  
lead to equipment damage and bodily harm.  
6. An oil filter should be installed as close to burner as  
possible with ALL oil burners and is essential on lower  
firing rate burners. We recommend the use of a low  
pressure drop oil filter such as the General Filter, Inc. model  
#1A-25A or equivalent. It is critical that oil capacity be  
equivalent or greater than fuel pump gear capacity. For a  
2-pipe system, this is 25 gph.  
An internal filter is provided as standard equipment with furnace.  
Refer to Keeping Filters Clean section for filter cleaning informa-  
tion.  
7. The oil pressure regulator is factory set to give nozzle oil  
pressures of 100 psig. The firing rate noted on nameplate  
may be obtained with "standard" nozzles by adjusting pump  
pressure as noted in Table 4 or on label on furnace.  
OPERATIONAL CHECKOUT  
DO NOT START BURNER UNLESS BLOWER ACCESS  
DOOR IS SECURED IN PLACE.  
Installation of furnace is now complete and operational checkout  
may be performed.  
On a new installation, air entrapped in oil line leading from  
tank to nozzle must be thoroughly purged in order to  
prevent excessive after drip. The oil pump is provided with  
a special fitting which allows purging of any air between  
tank and oil pump. The proper procedure for performing  
this operation is as follows:  
I. START-UP  
1. Check wiring against wiring diagram shown in Fig. 7.  
2. Open valve on oil supply line.  
3. Reset primary control.  
a. Place a piece of clear plastic 1/4-in. diameter tubing over  
purge fitting on oil pump.  
4. Set thermostat above room temperature.  
b. Start oil burner, then open purge fitting and allow burner  
to run until purge tube is completely free of air bubbles.  
5. Set main electrical switch to ON position. Burner should  
start.  
—5—  
 
TABLE 4—BURNER, NOZZLE, AND PUMP  
VIII. CONSTANT BLOWER SWITCH  
PRESSURE CHART  
This furnace is equipped with a constant low-speed blower option.  
Whenever room thermostat is not calling for heating or cooling,  
blower runs on low speed in order to provide air circulation. If  
constant blower option is not desired, the rocker switch on side of  
control box may be used to turn off constant speed.  
FIRING  
RATE  
GAL/HR (US)  
PUMP  
PRESSURE  
(PSIG)  
BECKETT OIL BURNER  
UNIT  
SIZE  
Model  
AFG  
Nozzle  
0.75 gph  
70° Hollow  
036105  
048125  
060155  
0.76  
0.90  
1.12  
103  
100  
104  
0.90 gph  
70° Hollow  
MAINTENANCE  
AFG  
AFG  
1.10 gph  
70° Hollow  
WARNING: The ability to properly perform mainte-  
nance on this equipment requires certain expertise, me-  
chanical skills, tools, and equipment. If you do not  
possess these, do not attempt to perform any maintenance  
on this equipment other than those procedures recom-  
mended in the User’s Manual. FAILURE TO FOLLOW  
THIS WARNING COULD RESULT IN POSSIBLE  
DAMAGE TO THIS EQUIPMENT, SERIOUS PER-  
SONAL INJURY, OR DEATH.  
c. Tighten purge fitting. Allow oil to run to nozzle and fire  
burner.  
d. If purging takes longer than 30 sec and no flame has  
been established, burner stops. Push reset button on top  
of primary control to restart burner.  
e. For detailed information on operation of primary control,  
refer to instructions included with furnace.  
III. FAN ADJUSTMENT CHECK  
WARNING: Before performing any service functions,  
unless operations specifically require power to be on,  
make sure all utilities are turned off upstream of appli-  
ance. Failure to comply with this warning will cause a fire  
hazard and/or bodily harm.  
This furnace is equipped with a 3-speed direct-drive motor to  
deliver a temperature rise (between return and supply plenums)  
within range specified on rating plate at external duct static  
pressure noted on rating plate.  
CAUTION: When operating furnace in heating mode,  
static pressure and temperature rise (supply-air tempera-  
ture minus return-air temperature) must be within those  
limits specified on rating label. Failure to follow this  
warning could lead to severe furnace damage.  
WARNING: To avoid personal injury, make sure elec-  
trical supply power is off before servicing.  
I. GENERAL  
Adjust fan speed so that temperature rise is within rise range  
specified on rating plate. Consult wiring diagram for speed  
changes on direct-drive motor.  
To adjust fan off time, set DIP switches on control board to obtain  
desired timing. (See Fig. 1.)  
In order to keep this furnace in good operating condition and to  
maintain its warranty, the furnace MUST be serviced on an annual  
basis. This servicing includes a nozzle change, a burner inspection,  
a visual check of tube passages through flue outlet and cleanout  
ports, and a visual inspection of combustion chamber when burner  
is removed.  
Depending on above inspection, service could also include a  
cleaning and vacuuming of heat exchanger tubes and possibly the  
heat exchanger drum section.  
1
2
1
2
1
2
1
2
60 Sec  
90 Sec  
120 Sec  
150 Sec  
DELAY OFF DIP SWITCH SETTINGS  
Removal of any heat exchanger components which are sealed by  
gaskets requires replacement of gasket.  
A95115  
WARNING: Failure to replace any heat exchanger gas-  
kets with new gaskets when any heat exchanger plates or  
covers are removed could lead to heat exchanger leakage,  
sooting, and/or a hazardous condition capable of causing  
bodily harm.  
Fig. 1—Fan Off Time DIP Switch Settings  
(Black Box Represents Switch Position)  
IV. LIMIT CONTROL CHECK  
After furnace has been in operation for at least 15 minutes, restrict  
return-air supply by blocking filters or closing return registers and  
allow furnace to shut down on high limit. The burner should shut  
off, and main blower should continue to run.  
Remove restriction, and burner should come back on in a few  
minutes.  
This furnace should never be operated without an air filter.  
Disposable filters should be replaced at least once a year. If  
equipped to provide cooling, filters should be replaced a minimum  
of twice a year. Permanent filters should be cleaned at least twice  
a year.  
V. FOR YEAR-ROUND AIR CONDITIONING  
This furnace is designed for use in conjunction with cooling  
equipment to provide year-round air conditioning. The blower has  
been sized for both heating and cooling, however, fan motor speed  
may need to be changed to obtain necessary cooling airflow.  
ALWAYS KEEP MAIN OIL VALVE TURNED OFF IF  
BURNER IS SHUT DOWN FOR AN EXTENDED PERIOD OF  
TIME.  
VI. HEATING  
II. OIL BURNER  
The blower speed is factory set to deliver required airflow at  
normal duct static pressure.  
Contact your service technician for service.  
Lubricate burner motor with SAE 10 oil. Once each year, pour 2  
teaspoons of oil slowly into each oil cup.  
VII. COOLING  
The blower speed may be field adjusted to deliver required airflow  
for cooling application. (See Table 5.)  
To maintain proper performance, oil burner nozzle must be  
replaced once a year.  
—6—  
 
The procedure for nozzle installation and/or replacement is out-  
lined in oil burner instruction manual which came with furnace.  
For ease of maintenance, the oiling procedure for burner motor, as  
outlined in burner manual, should be performed at this time.  
FLUE BOX  
PARTITION  
PANEL  
After replacement of nozzle, burner should be adjusted in accor-  
dance with Combustion Check section of this instruction.  
CLEANOUT  
COVER  
GASKET  
CLEANOUT  
PORT COVER  
III. HEAT EXCHANGER AND FLUE PIPE  
Ordinarily, it is not necessary to clean heat exchanger or flue pipe  
every year, but it is necessary to have your service technician  
check unit before each heating season to determine whether  
cleaning or replacement of parts is required.  
CLEANOUT  
COVER  
CLAMP  
BRACKET  
A. Cleaning Secondary Heat Exchanger Tubes and  
Flue Pipe Only  
If cleaning of only the secondary heat exchanger tubes and flue  
pipe is necessary, the following steps should be performed:  
WING  
CLAMP  
NUT  
INSULATION  
1. Turn off all oil and electrical supplies upstream of furnace.  
CAUTION: If furnace has been in operation, some  
surfaces may be hot. Allow time for unit to cool down.  
A96311  
Fig. 3—Reinstalling Cleanout Port Covers  
10. Turn on power to unit and readjust burner for proper  
operation. Inspect cleanout ports and flue connection to  
make sure there are no leaks.  
2. Disconnect flue pipe.  
3. For access to cleanout ports, remove blower door and filter.  
The 2 cleanout ports are located in blower compartment.  
They protrude through the partition and are located on the  
left and right of flue pipe. (See Fig. 2.)  
B. Cleaning Both Primary and Secondary Heat  
Exchangers  
If a more thorough cleaning is required (both primary and  
secondary heat exchanger sections), the following steps should be  
performed:  
4. Unscrew wing clamp nuts and remove cleanout port covers.  
This allows access to tubes. (See Fig. 2.)  
CLEANOUT  
PORTS  
1. Turn off all oil and electrical supplies upstream of furnace.  
CAUTION: If furnace has been in operation, some  
surfaces may be hot. Allow time for unit to cool down.  
CLEANOUT  
PORT COVER  
& CLAMP  
ASSEMBLY  
2. Remove blower door.  
3. Disconnect flue pipe.  
4. Remove outside flue collar.  
5. Remove top rear panel.  
BLOWER  
DOOR  
NOTE: Blower removal as described in Blower Oiling and  
Removal section may be desired for easier access when cleaning  
with duct work attached.  
6. Remove inside collar on flue pipe.  
7. Remove top partition.  
A96310  
Fig. 2—Removing Cleanout Port Covers  
8. Place field-fabricated cardboard on metal tray beneath  
collector box to prevent debris from entering blower com-  
partment.  
5. Clean secondary tubes and flue pipe with a stiff brush and  
vacuum cleaner.  
9. Remove flue collector box from secondary heat exchanger  
tube flange. This exposes inside surfaces of secondary tubes  
of heat exchanger.  
6. Before reinstalling cleanout port covers, the gasket on each  
cover MUST be replaced. Use cleanout port gasket kit Part  
No. 20196201.  
10. Clean secondary tubes and flue pipe with a stiff brush and  
vacuum cleaner.  
7. Reinstall covers and tighten in place making sure that  
covers are properly seated over ports and gasket has sealed  
opening. (See Fig. 3.)  
11. Remove louvered door.  
12. Disconnect limit control wires.  
13. Disconnect oil line and remove oil burner from furnace.  
14. Remove observation door and collar on observation tube.  
WARNING: Failure to replace cleanout port cover gas-  
kets, failure to properly seat covers over ports, and/or  
failure to securely tighten wing nuts could lead to flue gas  
leakage. This could lead to furnace damage, oil fumes,  
sooting, and severe bodily harm.  
15. Remove intermediate panel. Care must be taken not to bend  
or damage limit control.  
16. Loosen to hand tightness the 3 nuts labeled "A" in Fig. 4.  
Remove screws labeled "B" in Fig. 4. Slide combustion  
chamber forward out of heat exchanger. Be careful not to  
bump combustion chamber as it becomes brittle after  
having been fired.  
8. Reconnect flue pipe.  
9. Reinstall filter and blower door.  
—7—  
 
3. Remove screws securing blower legs to blower rails  
mounted on bottom panel of furnace.  
A
B
4. Slide blower forward on rails toward rear of unit until motor  
wire connections at terminal block on motor can easily be  
reached and disconnected.  
5. Disconnect motor wires at terminal block on motor.  
6. Remove blower from unit.  
A96398  
Fig. 4—Removing Combustion Chamber  
7. Reverse items 1 through 6 to reinstall blower. Refer to  
wiring diagram (Fig. 7) of these instructions or diagram  
located on inside of louvered door to properly rewire unit.  
17. Use a stiff brush and vacuum cleaner to clean inside of  
primary drum.  
CAUTION: Never use incendiary type cleaners (smoke  
sticks) for cleaning!  
V. KEEPING FILTERS CLEAN  
WARNING: Never operate unit without a filter or with  
filter access door removed. Failure to adhere to this  
warning could lead to a hazardous condition which could  
lead to equipment damage and bodily harm.  
WARNING: For all heat exchanger plates that have  
been removed, the gaskets MUST be replaced. Failure to  
replace gaskets could lead to heat exchanger leakage,  
sooting, and a hazardous condition which could lead to  
bodily harm.  
As a homeowner, keeping filters clean is your most important  
responsibility. A dirty filter reduces efficiency of your system,  
causes erratic performance of controls, and could result in damage  
to motor or heating element.  
18. Before reassembly, heat exchanger and combustion cham-  
ber should be inspected to determine if replacement is  
required. After cleaning, place combustion chamber back  
into primary drum and secure with "B" screws. Ensure that  
cover plate gasket is in place before tightening screws. Care  
must be taken not to damage combustion chamber. The "B"  
screws should be tightened to 35-45 lb-in.  
1. Inspect filters at regular intervals depending upon dirt  
conditions. For new homes, check filters every week for 4  
consecutive weeks. In all cases, inspect filters at least every  
3 to 4 weeks when system is in constant operation. Replace  
or clean filter at least at beginning of each season (heating  
and cooling) and thereafter as needed.  
2. If a permanent filter is used, it can be cleaned with cold  
water and soap.  
19. Tighten "A" nuts to 30 lb-in. of torque (firm, but not overly  
tight).  
Be sure that filter is thoroughly dry before installing back into  
furnace.  
20. Replace intermediate panel, observation tube collar, obser-  
vation door, limit wiring, and oil burner.  
21. Replace collector box on secondary tube flange, ensuring  
proper placement of gasket. Tighten screws to 35-45 lb-in.  
of torque.  
22. Replace top partition, inside collar on flue pipe, top rear  
panel, outside flue collar, and blower door.  
23. Reconnect flue pipe and oil line(s).  
24. Readjust burner for proper operation. Check limit operation  
as outlined in Limit Control Check section.  
IV. BLOWER OILING AND REMOVAL  
Periodic oiling of blower motor may be necessary. Check for  
instructions on inside of blower access door.  
If it is ever necessary to remove blower from furnace:  
1. Turn off all electrical power to furnace.  
2. Remove blower door.  
A95103  
TABLE 5—AIRFLOW DATA (CFM)  
EXTERNAL STATIC PRESSURE IN. WC  
0.4 0.5 0.6 0.7  
1605 1550 1485 1425  
UNIT  
SIZE  
BLOWER  
SPEED  
0.1  
0.2  
0.3  
0.8  
0.9  
1.0  
High  
Medium  
Low  
1795  
1365  
995  
1735  
1335  
965  
1675  
1305  
945  
1350  
1105  
775  
1275  
1050  
725  
1220  
985  
036105  
048125  
060155  
1275  
925  
1255  
900  
1215  
870  
1155  
825  
670  
High  
1905  
1750  
1390  
2025  
1885  
1555  
1845  
1675  
1350  
1960  
1825  
1490  
1770  
1620  
1305  
1905  
1760  
1445  
1695  
1560  
1260  
1850  
1705  
1410  
1630  
1500  
1220  
1800  
1640  
1350  
1565  
1440  
1180  
1665  
1565  
1280  
1490  
1370  
1120  
1575  
1500  
1230  
1425  
1305  
1060  
1500  
1430  
1155  
1325  
1235  
985  
1220  
1130  
880  
Medium  
Low  
High  
1415  
1350  
1085  
1315  
1265  
1005  
Medium  
Low  
NOTES: 1. Airflow values in cubic ft per minute (CFM) rounded to nearest 5 CFM.  
2. Data taken without filters in place.  
—8—  
 
G
CLEAN-OUT PORTS  
B
SUPPLY  
DUCT  
RETURN  
DUCT  
12 116  
3″  
1″  
A
E
H
1″  
D
INSULATION  
PARTITION  
PANEL  
ELECTRICAL  
CONNECTIONS  
F
C
FILTER  
INSULATION  
INTERMEDIATE  
PANEL  
OIL INLET  
A96309  
DIMENSIONS (IN.)  
UNIT DIMENSIONS  
FLUE  
DIAMETER  
DUCT SUPPLY OPENING  
RETURN DUCT  
UNIT  
SIZE  
Width  
Depth  
B
Height  
C
A
D
E
F
6
6
6
G
H
036105  
048125  
060155  
22  
22  
22  
52  
33  
20  
20  
20  
17-1/4  
22-1/4  
22-1/4  
20  
20  
20  
18  
18  
18  
57  
33  
57  
33  
Fig. 5—Dimensional Drawing  
—9—  
 
BAROMETRIC DAMPER LOCATIONS  
FIG. A  
FIG. D  
FIG. B  
FIG. C  
GOOD LOCATIONS  
WRONG  
FIG. G  
FIG. H  
WRONG  
WRONG  
FIG. K  
WRONG  
FIG. L  
POOR  
FIG. J  
WRONG  
BAD LOCATIONS  
A95117  
Fig. 6—Barometric Damper Locations  
—10—  
 
9
8
7
6
5
4
3
2
1
H o n e y w e l l  
1
2
T Y P I C A L T H E R M O S T A T  
—11—  
 
USER’S INFORMATION  
I. HERE’S HOW YOUR HEATING SYSTEM WORKS  
3. Set thermostat to lowest setting.  
4. Turn on electric power to furnace.  
5. Open oil supply valve.  
The furnace operates automatically. It is controlled by a thermostat  
which you set at the temperature most comfortable to you. When  
the inside temperature drops below this setting, your thermostat  
will turn on heating system.  
6. Check all connections to ensure there are no leaks.  
III. LIGHTING YOUR FURNACE  
When thermostat calls for heat, power from transformer energizes  
fan control board. The fan control energizes ignition control. The  
ignition control lights burner automatically.  
CAUTION: This furnace is equipped with an interrupted  
type electronic ignition system. DO NOT ATTEMPT TO  
LIGHT WITH A MATCH.  
The electronic fan control automatically turns on blower after 30  
sec. Fan on control is not adjustable. The air which is moved over  
heat exchanger by the blower is warmed and passes through ducts  
to room registers.  
When thermostat is satisfied, the circuit is de-energized and  
primary control shuts off burner. The blower continues to run until  
selectable fan off time period has expired.  
DANGER: HIGH VOLTAGE AT IGNITOR. Severe  
electrical shock, personal injury, or death could result.  
The heat sensing switch performs as furnace high-temperature  
limit switch. If furnace overheats for any reason, the limit switch  
opens, breaking circuit to burner. The blower motor is energized,  
and as unit cools, the limit switch closes. This relights burner, but  
unless overheating condition is corrected, furnace will cycle on  
limit.  
1. This appliance is equipped with an ignition device which  
automatically lights burner. Do NOT try to light burner by  
hand.  
2. After preparing furnace for heating operation (see previous  
section) and checking for oil, proceed as follows.  
This unit is equipped with an interrupted ignition electronic  
control. If main burner does not ignite within 30 sec from call for  
heat, the control locks out. The red button on top of control must  
be depressed for 3 sec in order to reset control. The control  
CANNOT be reset from room thermostat.  
3. For heating/cooling system, set thermostat to HEAT and fan  
to AUTO. Set thermostat to desired room temperature and  
turn on electrical power to furnace.  
4. The burner should light and system should be controlled by  
thermostat.  
II. PREPARING YOUR FURNACE FOR OPERATION  
Before attempting to put your furnace into operation for the  
heating season, you should perform the following procedures:  
IV. TURNING OFF YOUR FURNACE  
Follow these simple procedures to put your furnace into "retire-  
ment" for the summer.  
WARNING: If you do not follow these instructions  
exactly, a fire or explosion may result causing property  
damage, personal injury, or loss of life.  
1. Set thermostat to lowest setting.  
2. Turn off all electrical power to appliance.  
3. Turn off oil supply.  
1. Open all warm-air registers and make sure all return-air  
grilles are unobstructed.  
4. If applicable, turn off water supply to humidifier.  
5. If furnace blower will be necessary for cooling system,  
remember to turn electrical power back on when needed for  
air conditioning.  
2. If a humidifier is installed with your system, open water  
supply valve.  
FOR SERVICE CALL  
NAME:  
ADDRESS:  
TELEPHONE:  
© 1997 Bryant Heating & Cooling Systems 7310 W. Morris St. Indianapolis, IN 46231  
Printed in U.S.A.  
362a1051  
Catalog No. BDP-3336-203  
—12—  
 

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