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.
—1—
TABLE 1—MINIMUM 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.)
—3—
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 3—COMBUSTION 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 2—MINIMUM FLOOR AREA
FOR UNCONFINED SPACE
TABLE 4—COMBUSTION 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.)
—4—
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 5—COMBUSTION 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 ″L″ vent (maximum flue
gas temperature 575°F).
VENT SYSTEM INSPECTION
TABLE 6—COMBUSTION 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.
—5—
TABLE 7—ELECTRICAL 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
manufacturer’s 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 3/4–in. 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 1/4–in. 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
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.
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 ″side″ will 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.
—6—
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 9—FURNACE 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 8—FILTER 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
CONTROLS—CALL 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 ″trace″ of 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.
—7—
Fig. 3—Wiring Diagram (036105)
A00420
Fig. 4—Wiring Diagram (060120)
A00419
Remove restriction, and burner should come back on in a few
minutes.
TABLE 10—BURNER 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 User’s 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 11—SPEED 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. 5—Fan 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.
—10—
TABLE 12—AIRFLOW 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—
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
—12—
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