Bryant Furnace 369RAN User Manual

installation, start-up,  
369RAN  
Series A  
and operating instructions  
MULTIPOISE  
OIL FURNACE  
Cancels: New  
II 369R-70-1  
12-00  
NOTE: Read the entire instruction manual before starting the  
installation.  
TABLE OF CONTENTS  
SAFETY CONSIDERATIONS.....................................................1  
INTRODUCTION..........................................................................2  
LOCATION....................................................................................2  
General ......................................................................................2  
Location Relative to Cooling Equipment ................................3  
INSTALLATION...........................................................................3  
Air for Combustion and Ventilation ........................................3  
General ......................................................................................3  
Unconfined Space.....................................................................4  
Confined Space.........................................................................4  
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  
A97247  
Fig. 1—369RAN Multipoise Oil Furnace  
MAINTENANCE.........................................................................10  
General ....................................................................................10  
Oil Burner ...............................................................................11  
Heat Exchanger and Flue Pipe...............................................11  
Blower Removal .....................................................................11  
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.  
SAFETY CONSIDERATIONS  
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 EQUIP-  
MENT  
FOR YOUR SAFETY  
DO NOT STORE OR USE GASOLINE OR OTHER  
FLAMMABLE VAPORS AND LIQUIDS IN THE VI-  
CINITY 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.  
ANSI/NFPA 211: CHIMNEYS, FIREPLACES, VENTS, AND  
SOLID FUEL BURNING APPLIANCES  
ANSI/NFPA 90B: WARM AIR HEATING AND AIR CONDI-  
TIONING SYSTEMS  
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.  
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, Bat-  
terymarch 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.  
CAUTION: Never burn garbage or paper in the heating  
system and never leave rags, paper, or any flammable  
items around the unit.  
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TABLE 1MINIMUM CLEARANCES TO  
COMBUSTIBLE MATERIALS (IN.)  
UNIT APPLICATION  
Furnace  
UPFLOW  
DOWNFLOW  
HORIZONTAL  
0
2
2
Sides  
Back  
Top  
Supply Plenum and Warm-Air Duct Within 6 ft  
of Furnace  
1
2
1
Service Clearance  
0
2
1
2
0
2
Furnace Casing or Plenum  
Horizontal Warm-Air Duct Within 6 ft of  
Furnace  
2
2
3
Bottom  
0
4
9
8
0*  
4
0*  
4
Horizontally or Below Pipe  
Vertically Above Pipe  
Flue  
Pipe  
9
9
Front  
8
24  
* Use approved subbase for combustible floor.  
NOTE: Adequate service clearances should be provided over and above these dimensions as required.  
CAUTION: For attic installation, it is important to keep  
insulation 12 in. or more away from any furnace open-  
ings. Some types of insulating materials may be combus-  
tibles.  
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.  
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, counter-  
flow, 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.  
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.  
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.)  
INSTALLATION  
I. AIR FOR COMBUSTION AND VENTILATION  
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 combus-  
tible flooring, unless the approved Horizontal Subbase is used.  
WARNING: Installation of this furnace in an area where  
it will receive contaminated combustion air must be  
avoided. Such contamination would include the follow-  
ing: 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 prema-  
ture furnace failure and/or vent failure which could result  
in fire hazard and/or bodily harm.  
The required minimum clearances for 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.  
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.  
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:  
II. GENERAL  
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.  
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.)  
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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.  
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.  
IV. CONFINED SPACE  
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.  
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.)  
The lack of a proper amount of combustion air can lead to serious  
furnace operational problems. Some of these problems are:  
TABLE 3COMBUSTION AIR  
FROM CONFINED SPACE  
1. Excessive oil burner after-drip, and oil fumes.  
2. Sooting.  
369RAN FURNACE  
INPUT BTUH  
LENGTH  
(IN.)  
HEIGHT  
(IN.)  
3. Melted oil burner ignitor/relay control.  
4. Air band or air turbulator settings more open than normal.  
70,000-105,000  
119,000  
16  
20  
8
10  
5. Lockouts on start-up. The requirements for combustion and  
ventilation air depend upon whether furnace is located in a  
CONFINED or UNCONFINED space.  
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.  
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 determi-  
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.  
(Refer to Table 2.)  
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 2MINIMUM FLOOR AREA  
FOR UNCONFINED SPACE  
TABLE 4COMBUSTION AIR  
FROM UNCONFINED SPACE  
369RAN FURNACE  
INPUT BTUH  
MINIMUM SQ FT WITH  
7-1/2 FT CEILING  
70,000  
91,000  
467  
607  
700  
793  
933  
1026  
FREE AREA PER  
369RAN FURNACE  
OPENING  
INPUT BTUH  
(SQ IN.)  
105,000  
119,000  
140,000  
154,000  
70,000  
91,000  
100  
100  
105  
119  
140  
154  
105,000  
119,000  
140,000  
154,000  
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.  
B. All Air from Outside of Structure  
A building can be considered as being of tight construction when:  
If outside air is supplied to a confined space, then the 2 openings  
must be equal and located as above.  
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.  
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.)  
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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.  
TABLE 5COMBUSTION AIR FROM OUTDOORS  
THROUGH VERTICAL DUCTS  
FREE AREA PER  
369RAN FURNACE  
INPUT BTUH  
ROUND PIPE  
(IN. DIAM)  
OPENING  
(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.  
70,000  
91,000  
17.5  
22.8  
26.3  
29.8  
35.0  
38.5  
5
6
6
6
6
6
105,000  
119,000  
140,000  
154,000  
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.  
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.)  
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.  
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 Lvent (maximum flue  
gas temperature 575°F).  
VENT SYSTEM INSPECTION  
TABLE 6COMBUSTION AIR FROM OUTDOORS  
Before furnace is installed, it is highly recommended that any  
existing vent system be completely inspected.  
THROUGH HORIZONTAL DUCTS  
369RAN FURNACE FREE AREA PER OPENING ROUND PIPE  
For any chimney or vent, this should include the following:  
INPUT BTUH  
(SQ IN.)  
(IN. DIAM)  
1. Inspection for any deterioration in chimney or vent. If  
deterioration is discovered, chimney must be repaired or  
vent must be replaced.  
70,000  
35.0  
7
8
91,000  
45.5  
105,000  
119,000  
140,000  
154,000  
52.5  
9
2. Inspection to ascertain that vent system is clear and free of  
obstructions. Any blockage must be cleared before install-  
ing furnace.  
59.5  
9
70.0  
10  
10  
77.0  
3. Cleaning chimney or vent if previously used for venting a  
solid fuel burning appliance or fireplace.  
C. Duct Work Recommendations  
4. Confirming that all unused chimney or vent connections are  
properly sealed.  
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.  
5. Verification that chimney is properly lined and sized per the  
applicable codes. (Refer to list of codes in Safety Consid-  
erations section.)  
MASONRY CHIMNEYS  
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: 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 Condi-  
tioning 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 install-  
ing duct work:  
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.  
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.  
3. Never reduce pipe size below the outlet size of furnace.  
(See Fig. 2.)  
4. All pipe should be supported using proper clamps and/or  
straps. These supports should be at least every 4 ft.  
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.  
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.  
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.  
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TABLE 7ELECTRICAL DATA  
OPERATING  
VOLTAGE RANGE  
VOLTS  
HERTZ—  
PHASE—  
MAX  
UNIT  
AMPS  
MIN  
WIRE  
GAGE  
UNIT  
SIZE  
MAX WIRE  
LENGTH (FT)†  
MAX FUSE OR  
CKT BKR AMPS‡  
Max*  
132  
Min*  
104  
104  
036105  
060120  
115—60—1  
115—60—1  
12.2  
15.7  
14  
14  
26  
26  
15  
20  
132  
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.  
H. Electrical Connections  
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.  
10. Check local codes for any variance.  
FACTORY-BUILT CHIMNEYS  
Listed factory-built chimneys may be used. Refer to chimney  
manufacturers instructions for proper installation.  
115-V WIRING  
Before proceeding with electrical connections, make certain that  
voltage, frequency, and phase correspond to that specified on unit  
rating plate. Also, check to be sure that service provided by utility  
is sufficient to handle load imposed by this equipment. Refer to  
rating plate or Table 7 for equipment electrical specifications.  
E. Oil Burner  
This furnace is supplied with a high-pressure atomizing retention  
head-type burner (for use with grade 1 or 2 fuel oil). The Riello oil  
burner operates with a prepurge period of 10 seconds and a safety  
timing of 5 seconds. The burner flange is factory installed for an  
inspection length of 3 3/4in. The oil pump is set to operate on a  
single line system. To operate on a two-line system the by-pass  
plug must be installed.  
Make all electrical connections in accordance with National  
Electrical Code (NEC) ANSI/NFPA 70-1996 and any local codes  
or ordinances that might apply. For Canadian installations, all  
electrical connections must be made in accordance with Canadian  
Electrical Code CSA C22.1 or subauthorities having jurisdiction.  
F. Oil Connections  
CAUTION: Do not connect aluminum wire between  
disconnect switch and furnace. Use only copper wire.  
WARNING: This burner is shipped with the oil pump  
set to operate on a single line system. To operate on a  
two-line system the by-pass plug must be installed. Do  
not operate a single line system with the by-pass plug  
installed. Operating a single line system with the by-pass  
plug installed will result in damage to the pump shaft  
seal..  
Pump pressure must be set at time of burner start-up. A  
pressure gauge is attached to the PRESSURE PORT for  
pressure readings. Two PIPE CONNECTORS are sup-  
plied with the burner for connection to either a single or  
two-line system. Also supplied are two ADAPTORS,  
two female 1/4in. NPT, to adapt oil lines to burner pipe  
connectors. All pump ports are British Parallel Thread  
design. Direct connection of NPT threads to the pump  
will damage the pump body.  
The control system depends on correct polarity of power supply.  
Connect HOT wire (H) and NEUTRAL wire (N) as shown in Fig.  
3 or Fig. 4.  
A separate line voltage supply MUST be used with a fused  
disconnect switch or circuit breaker between main power panel  
and unit. (See Fig. 3 or Fig. 4.)  
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.  
When replacing any original furnace wiring, use only 105°C No.  
14 AWG copper wire.  
24-V WIRING  
Instructions for wiring thermostat (field supplied) are packed in  
thermostat box. Make thermostat connections as shown in Fig. 3 or  
Fig. 4 at 24-v terminal board on fan timer board.  
Riello manometers and vacuum gauges do not require  
any adapters and can be safely connected to the pump  
ports. An NPT (metric) adapter must be used when  
connecting other guage models.  
ACCESSORIES  
When installing optional accessories to this appliance, follow  
manufacturers 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.  
Complete instructions for installing fuel oil piping can be found in  
oil burner Installation Instructions included with furnace.  
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.  
I. Horizontal or Downflow Installation  
For horizontal installation, determine which sidewill become the  
top, when the unit is laid down. Remove the flue pipe clearance  
knock-out from the top of that side panel. Install the flue elbow so  
that it exits the cabinet of the furnace through that opening.  
An oil filter should be used with all oil burners and should be  
installed as close to burner as possible.  
For counterflow installation, the flue pipe must exit the cabinet  
through 1 of the side panel openings (as above), then extended up  
the side of the furnace. Insure that adequate clearances to com-  
bustibles are observed. Downflow Conversion/Vent Guard Kit  
MUST be used.  
G. 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.  
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Remove burner by loosening mounting nuts and turn oil burner  
slightly counterclockwise to unlock the key hole burner flange.  
Prevent putting undue strain on burner wiring. (It may be neces-  
sary to disconnect burner wiring in some cases.)  
To reinstall burner, insert on the four burner studs on key hole  
burner flange and turn it clockwise to lock it and tighten nuts.  
IMPORTANT: Burner must always be installed in the upright  
position with ignition control on top.  
3. In order to ensure proper draft through furnace, a baromet-  
ric draft regulator (supplied with furnace) must be installed.  
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 regu-  
lator should be adjusted after furnace has been firing for at least 5  
minutes, and set between -0.025 and -0.035 in. wc. (See Table 9.)  
4. The over-fire draft, which is taken through observation door  
(located in center line above burner in front panel of  
furnace), is a measurement necessary to determine if there  
is a blockage between oil burner and flue outlet.  
J. Filters  
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.  
There should be a total pressure drop of between 0.020 and 0.05 in.  
wc through furnace as shown in Table 9. The over-fire draft must  
be set within the range shown in Table 9.  
TABLE 9FURNACE DRAFT CONDITIONS (IN. WC)  
An external filter rack is provided as standard equipment with  
furnace. A sufficient clearance should be provided for air filter  
access. Refer to Table 8 for filter rack flange dimensions for return  
air duct.  
FURNACE  
INPUT  
FLUE  
DRAFT  
OVER-FIRE TOTAL RESTRICTION  
DRAFT  
THROUGH  
(BTUH)  
MINIMUM MAXIMUM  
HEAT EXCHANGER  
70,000  
91,000  
-0.025  
-0.025  
-0.025  
-0.025  
-0.025  
-0.025  
0.010  
0.020  
0.025  
0.025  
0.025  
0.025  
0.020 to 0.035  
0.030 to 0.045  
0.035 to 0.050  
0.035 to 0.050  
0.035 to 0.050  
0.035 to 0.050  
TABLE 8FILTER AND FLANGE (IN.)  
105,000  
119,000  
140,000  
154,000  
UNIT  
SIZE  
AIR FILTER  
SIZE  
FLANGE OPENING  
SIZE  
16 X 24 X 1  
or  
16 X 25 X 1  
036105  
060120  
15 X 23  
19 X 29  
20 X 30 X 1  
A reading outside the range shown in Table 9 (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 any  
of the following problems:  
START-UP, ADJUSTMENT, AND SAFETY CHECKOUT  
I. OPERATIONAL CHECKOUT  
a. Excessive combustion air due to air shutter being too  
wide open.  
WARNING: DO NOT TAMPER WITH UNIT OR  
CONTROLSCALL YOUR SERVICE TECHNICIAN.  
b. A lack of flue draft (chimney effect) or some other  
blockage, such as soot, in secondary section of heat  
exchanger.  
Installation of furnace is now complete. Run through the following  
checkout and ensure each item has been performed.  
c. Use of an oversized nozzle input.  
1. Correct nozzle size has been selected for desired input rate.  
2. Blower wheel support is removed.  
d. Pump pressure over values listed in Table 10.  
5. The CO2 and stack temperature instruments enable you to  
obtain data required to determine thermal efficiency of  
furnace.  
3. Electrical wiring is completed according to Fig. 3 or Fig. 4.  
4. Blower access door is secured in place.  
5. Valve on oil supply line is open.  
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.  
6. RESET BUTTON on primary control is pushed down.  
7. Flame observation door and 2 cleanout access doors located  
at front of unit are closed.  
8. Thermostat is set for heating mode and set above room  
temperature.  
If all of the above items have been performed, set main electrical  
switch to ON position and burner should start. When burner starts,  
proceed to Combustion Check section.  
7. The oil pressure regulator is factory set to give oil pressure  
of 135 psig for the model having 105,000 BTUH input and  
135 psig for the model haveing 119,000 BTUH input. The  
firing rate noted on nameplate may be obtained using the  
nozzles and pump pressures indicated in table #5. The  
proper oil burner turbulator setting for all the firing rates  
is 0 (zero).  
II. COMBUSTION CHECK  
In order to obtain optimum performance from oil burner, the  
following setup procedures must be followed:  
8. 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:  
1. A test kit to measure smoke, stack draft, over-fire draft, oil  
pump pressure, CO2, and stack temperatures MUST be used  
in order to obtain proper air band setting. Although all of  
the above measurements are required for optimum setup  
and efficiency data, the most important readings that must  
be taken are smoke number, over-fire draft, stack draft, and  
pump pressure.  
a. Place a piece of clear plastic 1/4 in. diameter tubing over  
purge fitting on oil pump.  
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 traceof smoke. It  
is recommended to use a Bacharach true spot smoke test set  
or equivalent.  
b. Start oil burner, then open purge fitting and allow burner  
to run until purge tube is completely free of air bubbles.  
c. Tighten purge fitting. Allow oil to run to nozzle and fire  
burner.  
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Fig. 3Wiring Diagram (036105)  
A00420  
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Fig. 4Wiring Diagram (060120)  
A00419  
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Remove restriction, and burner should come back on in a few  
minutes.  
TABLE 10BURNER INPUT AND NOZZLE SIZE  
RIELLO OIL BURNER  
FURNACE  
INPUT  
FIRING  
RATE  
PUMP  
PRESSURE  
(PSIG)  
No. 40  
Nozzle  
V. FOR YEAR-ROUND AIR CONDITIONING  
(BTUH) GAL/HR (US)  
Series Model  
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.  
70,000  
91,000  
0.50  
0.65  
0.75  
0.85  
1.00  
1.10  
F3  
F3  
F3  
F5  
F5  
F5  
0.40 - 70A  
0.50 - 70W  
0.65 - 70W  
0.75 - 70B  
0.85 - 70W  
1.00 - 70W  
160  
170  
135  
130  
140  
125  
105,000  
119,000  
140,000  
154,000  
VI. HEATING  
The blower speed is factory set to deliver required airflow at  
normal duct static pressure.  
d. If purging takes longer than 15 sec and no flame has  
been established, burner stops. Push reset button on front  
of primary control to restart burner.  
VII. COOLING  
e. For detailed information on operation of primary control,  
refer to instructions included with furnace.  
The blower speed may be field adjusted to deliver required airflow  
for cooling application. (See Table 12.)  
After all the setup procedures mentioned above have been com-  
pleted, the burner should be allowed to operate and an inspection  
mirror should be used to observe the flame pattern at tip of nozzle.  
Any irregularities such as burning to 1 side or pulsating flame  
patterns should be corrected by changing nozzle.  
VIII. CONSTANT BLOWER SWITCH  
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 top of  
cabinet may be used to turn off constant speed.  
III. FAN ADJUSTMENT CHECK  
This furnace is equipped with a 4-speed direct-drive motor to  
deliver a temperature rise within range specified on rating plate,  
between return and supply plenums, at external duct static pressure  
noted on rating plate.  
MAINTENANCE  
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 Users Manual. FAILURE TO FOLLOW  
THIS WARNING COULD RESULT IN POSSIBLE  
DAMAGE TO THIS EQUIPMENT, SERIOUS PER-  
SONAL INJURY, OR DEATH.  
WARNING: 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.  
Adjust fan speed ACCORDING TO OIL INPUT SELECTED so  
that temperature rise is within rise range specified on rating plate.  
(See Table 11.) Consult wiring diagram for speed changes on  
direct-drive motor.  
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.  
To adjust fan off time, set DIP switches on control board to obtain  
desired timing. (See Fig. 5.)  
TABLE 11SPEED SELECTION  
FURNACE  
INPUT  
(BTUH)  
RECOMMENDED  
BLOWER  
UNIT  
SIZE  
SPEED  
70,000/119,000  
91,000/140,000  
105,000/154,000  
Med-Low  
Med-High  
High  
WARNING: To avoid personal injury, make sure elec-  
trical supply power is off before servicing. Failure to  
follow this warning could lead to electrical shock, fire, or  
death.  
036105/  
060120  
1
2
1
2
1
2
1
2
I. GENERAL  
60 Sec  
90 Sec  
120 Sec  
150 Sec  
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.  
DELAY OFF DIP SWITCH SETTINGS  
A95115  
Fig. 5Fan Off Time DIP Switch Settings  
(Black Box Represents Switch Position)  
Depending on above inspection, service could also include a  
cleaning and vacuuming of heat exchanger tubes and possibly the  
heat exchanger drum section.  
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.  
Removal of any heat exchanger components which are sealed by  
gaskets requires replacement of gasket.  
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TABLE 12AIRFLOW DATA (CFM)  
EXTERNAL STATIC PRESSURE IN. WC  
UNIT  
SIZE  
BLOWER  
SPEED  
0.2  
0.3  
0.4  
0.5  
1250  
950  
0.6  
1170  
885  
0.7  
1030  
820  
0.8  
925  
0.9  
805  
670  
500  
665  
1336  
1217  
938  
653  
High  
Med-High  
Med-Low  
Low  
1425  
1130  
840  
1350  
1045  
810  
1305  
1000  
770  
745  
036105  
060120  
740  
685  
635  
580  
725  
730  
740  
745  
730  
715  
690  
High  
2080  
1892  
1556  
1221  
2041  
1859  
1475  
1164  
1965  
1770  
1394  
1081  
1864  
1675  
1318  
998  
1702  
1550  
1211  
926  
1576  
1449  
1134  
855  
1474  
1330  
1051  
782  
Med-High  
Med-Low  
Low  
NOTES:  
1. Airflow values in cubic ft per minute (CFM) rounded to nearest 5 CFM.  
2. Data taken with filters in place.  
2. Disconnect flue pipe.  
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.  
3. Remove flue collar panel located in front part of furnace.  
4. Remove baffle from secondary heat exchanger.  
5. Disconnect oil line and remove oil burner from furnace.  
6. Open two cleanout doors located in upper part of front panel  
of furnace.  
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.  
7. Clean secondary tubes, and primary cylinder with stiff  
brush and vacuum cleaner.  
8. Before re-assembly, the heat exchanger and combustion  
chamber should be inspected to determine if replacement is  
required.  
ALWAYS KEEP MAIN OIL VALVE TURNED OFF IF  
BURNER IS SHUT DOWN FOR AN EXTENDED PERIOD OF  
TIME.  
9. After cleaning, replace baffle, flue collar plate, oil burner,  
and close the two cleanout access doors. Reconnect flue  
pipe and oil line.  
II. OIL BURNER  
For optimum performance, oil burner nozzle should be replaced  
once a year. Contact your service technician if you are unsure of  
this procedure.  
10. Re-adjust burner for proper operation.  
IV. BLOWER REMOVAL  
The procedure for nozzle installation and/or replacement is out-  
lined in oil burner instruction manual which came with furnace.  
After replacement of nozzle, burner should be adjusted in accor-  
dance with Combustion Check section of this instruction.  
To remove blower from furnace:  
1. Turn off all oil and electrical supplies upstream of furnace.  
2. Remove burner access and blower door.  
3. Remove blower retaining screw (on blower shelf).  
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.  
4. Remove cover from control box and disconnect thermostat  
and power wires from the board.  
If cleaning is necessary, the following steps should be performed:  
1. Turn off all oil and electrical supplies upstream of furnace.  
5. Slide blower forward on rails toward front of unit.  
6. Reverse items 1 through 5 to re-install blower. Refer to  
wiring diagram (Fig. 3 or Fig. 4) of these instructions or  
diagram located on inside of blower door to properly rewire  
unit.  
CAUTION: If furnace has been in operation, some  
surfaces may be hot. Allow time for unit to cool down.  
11—  
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SERVICE TRAINING  
Packaged Service Training programs are an excellent way to increase your  
knowledge of the equipment discussed in this manual, including:  
Unit Familiarization  
Installation Overview  
Maintenance  
Operating Sequence  
A large selection of product, theory, and skills programs is available, using popular  
video-based formats and materials. All include video and/or slides, plus companion  
book.  
Classroom Service Training plus "hands-on" the products in our labs can mean  
increased confidence that really pays dividends in faster troubleshooting, fewer  
callbacks. Course descriptions and schedules are in our catalog.  
CALL FOR FREE CATALOG 1-800-962-9212  
[ ] Packaged Service Training  
[ ] Classroom Service Training  
A94328  
© 2001 Bryant Heating & Cooling Systems 7310 W. Morris St. Indianapolis, IN 46231  
Printed in U.S.A.  
369r701  
Catalog No. 5336-907  
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