Rheem LX2000 Series Installation Instructions Manual
92-22876-07-03
SUPERSEDES 92-22876-07-02
!
If the information in these instructions is not followed exactly, a
fire or explosion may result, causing property damage, personal
injury or death.
THESE INSTRUCTIONS ARE
INTENDED AS AN AID TO
QUALIFIED SERVICE
PERSONNEL FOR PROPER
INSTALLATION, ADJUSTMENT
AND OPERATION OF THIS
UNIT. READ THESE
INSTRUCTIONS THOROUGHLY
BEFORE ATTEMPTING
INSTALLATION OR
OPERATION. FAILURE TO
FOLLOW THESE
INSTRUCTIONS MAY RESULT
IN IMPROPER INSTALLATION,
ADJUSTMENT, SERVICE OR
MAINTENANCE, POSSIBLY
RESULTING IN FIRE,
ELECTRICAL SHOCK, CARBON
MONOXIDE POISONING,
EXPLOSION, PROPERTY
DAMAGE, PERSONAL INJURY
OR DEATH.
Do Not Destroy this Manual.
Please read carefully and keep
in a safe place for future
reference by a serviceman.
WARNING
Recognize this symbol as an indication of Important Safety Information!
!
— Do not store or use gasoline or other
flammable vapors and liquids, or other
combustible materials in the vicinity of this
or any other appliance.
—
WHAT TO DO IF YOU SMELL FUEL OIL VAPORS
• Do not try to light any appliance.
• Do not touch any electrical switch; do not
use any phone in your building.
• Immediately call your fuel oil supplier
from a neighbor’s phone. Follow the fuel
oil supplier’s instructions.
• If you cannot reach your fuel oil supplier,
call the fire department.
• Do not return to your home until
authorized by the fuel oil supplier or fire
department.
— DO NOT RELY ON SMELL ALONE TO
DETECT LEAKS. DUE TO VARIOUS
FACTORS, YOU MAY NOT BE ABLE TO
SMELL FUEL GASES.
• U.L. recognized fuel gas and CO
detectors are recommended in all
applications, and their installation should
be in accordance with the manufacturer’s
recommendations and/or local laws,
rules, regulations, or customs
— Improper installation, adjustment, alteration,
service or maintenance can cause injury,
property damage or death. Refer to this
manual. Installation and service must be
performed by a qualified installer, service
agency or the fuel oil supplier.
WARNING
!
PROPOSITION 65: THIS FURNACE CONTAINS FIBERGLASS
INSULATION. RESPIRABLE PARTICLES OF FIBERGLASS ARE
KNOWN TO THE STATE OF CALIFORNIA TO CAUSE CANCER.
EXHAUST GAS FROM THIS FURNACE CONTAINS CHEMICALS,
INCLUDING CARBON MONOXIDE, KNOWN TO THE STATE OF
CALIFORNIA TO CAUSE BIRTH DEFECTS OR OTHER REPRODUCTIVE HARM.
WARNING
!
FOR YOUR SAFETY
!
INSTALLATION INSTRUCTIONS
FOR UPFLOW OIL FIRED FURNACES
2
Before beginning any troubleshooting procedure, complete the following installation checklist. A furnace malfunction is
sometimes caused by an improper installation. By completing this checklist, the problem may be found and corrected. Make
copies of the checklist and complete one for every Low Profile Furnace service call for your records.
INSTALLATION CHECKLIST
(Refer to this manual for specifics.)
GAS SUPPLY
Adequate pipe size
No gas leaks
Proper supply and manifold gas pressure (check with an accurate U-tube manometer with the furnace and all other gas
appliances operating.)
ELECTRICAL
Correct thermostat and subbase Thermostat model Subbase model
Correct thermostat mode and setting
Correct line supply voltage
Correct polarity (important with hot surface ignition)
Correct furnace ground to electrical panel
DC microamp (
µA) flame signal (hot surface ignition units)
Correct control voltage
Measure and set heat anticipator amperage
Air conditioning low voltage wires connected to terminals “Y” “C” - not with wire nuts
VENTING
Correct vent pipe diameter and length (according to AGA/GAMA tables) Vent connection size
Correct venting material (according to AGA/GAMA tables)
Correct lining for masonry chimneys
Adequate clearance from combustibles
Proper negative pressure reading in the vent
Vent pipe secured to induced draft blower housing
COMBUSTION AIR
Proper source of combustion air
Correct combustion air opening size
FURNACE INSTALLATION
Adequate clearance from combustibles
Adequate clearance for service
Proper air temperature rise (See furnace rating plate)
External static pressure inches w.c.
Correct filter(s)
Correct cooling coil or accessories (if equipped)
Adequate supply and return air ducting Return Air Duct Size Supply Air Duct Size
Air ducts sealed to prevent leakage
3
IMPORTANT: TO ENSURE PROPER INSTALLATION AND OPERATION OF
THIS PRODUCT, COMPLETELY READ ALL INSTRUCTIONS PRIOR TO
ATTEMPTING TO ASSEMBLE, INSTALL, OPERATE, MAINTAIN OR REPAIR
THIS PRODUCT. ADDITIONALLY, UPON UNPACKING OF FURNACE,
INSPECT ALL PARTS FOR DAMAGE PRIOR TO INSTALLATION AND START
UP.
CONTENTS
Safety Rules..........................................................................................................4
Helpful Information................................................................................................4
Installation Instructions......................................................................................4
Requirements........................................................................................................4
Location/Clearances .............................................................................................4
Combustion Air Supply..........................................................................................5
Circulating Air Supply............................................................................................7
Venting..................................................................................................................7
Barometric Draft Control........................................................................................8
Oil Burner/Primary Control....................................................................................8
Tank & Oil LInes....................................................................................................9
Electrical Wiring ....................................................................................................9
Thermostat............................................................................................................9
Heat Anticipator Settings.......................................................................................9
Typical Installation Diagrams ..............................................................................10
Operating Instructions......................................................................................11
Lighting Instructions ............................................................................................11
Burner Adjustment ..............................................................................................12
Furnace Adjustment..........................................................................................12
Air Volume Adjustment........................................................................................15
Fan/Limit Control.................................................................................................17
Maintenance ......................................................................................................19
Burner Maintenance............................................................................................19
Lubrication...........................................................................................................19
Air Filters.............................................................................................................19
Draft Problems/Troubleshooting .........................................................................20
Oil Furnace Burner Data .....................................................................................21
Troubleshooting ..................................................................................................22
Wiring Diagrams..................................................................................................26
➤ Installation Instructions are updated on a regular basis. This is done as
product changes occur or if new information becomes available. In this
publication, an arrow (➤) denotes changes from the previous edition or additional
new material.
INSTALLER: HANG THESE INSTRUCTIONS
ADJACENT TO FURNACE
HOMEOWNER: KEEP THESE INSTRUCTIONS
FOR FUTURE REFERENCE
REQUIREMENTS
IMPROPER INSTALLATION,
ADJUSTMENT, ALTERATION,
SERVICE OR MAINTENANCE CAN
CAUSE PROPERTY DAMAGE,
INJURY OR DEATH. CONSULT A
QUALIFIED INSTALLER OR
SERVICE AGENCY FOR SERVICE
AND ASSISTANCE.
The furnace should be installed in
accordance with the latest editions of
the NFPA 31 booklet, “Installation of
Oil Burning Equipment,” the NFPA 90B
booklet, “Warm Air Heating and Air
Conditioning Systems” the NFPA 90A
booklet, “Installation of Venting and Air
Conditioning Systems” and the NFPA
211 booklet “Standard for Chimneys,
Fireplaces, Vents, and Solid FuelBurning Appliances” published by the
National Fire Protection Associaiton,
Batterymarch Park, Quincy, MA 02269.
THIS FURNACE IS DESIGN
CERTIFIED TO OPERATE ON #2
FUEL OIL. DO NOT ATTEMPT TO
CONVERT THIS FURNACE TO
BURN NATURAL GAS OR LP GAS.
FAILURE TO FOLLOW THIS
WARNING CAN CAUSE A FIRE OR
EXPLOSION RESULTING IN
PROPERTY DAMAGE, PERSONAL
INJURY OR DEATH.
LOCATION
THIS FURNACE IS NOT APPROVED
FOR INSTALLATION IN A MOBILE
HOME. DO NOT INSTALL THIS
FURNACE IN A MOBILE HOME.
INSTALLATION IN A MOBILE HOME
COULD CAUSE FIRE, PROPERTY
DAMAGE AND PERSONAL INJURY
OR DEATH.
Locate furnace as close to chimney as
practical, giving considerations to duct
trunk lines and accessibility of oil
burner, controls, blower and filter. For
basement installation, if there is no
level concrete floor or if water may be
encountered, a level concrete base
should be provided. Furnaces may be
installed on combustible floors. Allow a
minimum of twenty-four inches at front
of furnace for servicing oil burner and
controls. Fire protection clearances are
printed in Figure 1 and on the rating
plate of the furnace.
An oil-fired furnace installed in a
residential garage must be located or
protected to avoid physical damage by
vehicles.
This furnace is approved for installation
indoors only. Do not install unit
outdoors.
COMBUSTIBLE MATERIAL MUST
NOT BE PLACED ON OR AGAINST
THE FURNACE JACKET. THE AREA
AROUND THE FURNACE MUST BE
KEPT CLEAR AND FREE OF ALL
COMBUSTIBLE MATERIAL
INCLUDING GASOLINE AND OTHER
FLAMMABLE VAPOR OR LIQUIDS.
THE HOMEOWNER SHOULD BE
CAUTIONED THAT THE FURNACE
AREA MUST NOT BE USED AS A
BROOM CLOSET OR FOR ANY
OTHER STORAGE PURPOSES.
COMBUSTIBLE MATERIAL PLACED
AGAINST FURNACE JACKET COULD
CAUSE FIRE, PROPERTY DAMAGE,
PERSONAL INJURY OR DEATH.
HELPFUL INFORMATION
The following national standards will
help you in making this installation.
Current editions of these standards
should be obtained from:
American National Standards Institute
1430 Broadway
New York, NY 10018
National Electric Code
ANSI/NFPA No. 70
National Fire Protection Association,
Inc.
Batterymarch Park
Quincy, MA 02269
Installation of Oil Burning
Equipment
NFPA No. 31
Installation of Air Conditioning and
Ventilating Systems
NFPA No. 90A
Warm Air Heating and Air
Conditioning Systems
NFPA No. 90B
Standard for Chimneys, Fireplaces,
Vents, and Solid Fuel-Burning
Appliances NFPA No. 211
4
1. Do not install this furnace in a
mobile home, trailer or recreational
vehicle.
2. Keep area around furnace free and
clear of combustible materials
including gasoline and other
flammable vapors and liquids.
3. Do not use furnace area for storage
purposes or as a broom closet.
THIS FURNACE IS DESIGN
CERTIFIED TO OPERATE ON #2
FUEL OIL. DO NOT ATTEMPT TO
CONVERT THIS FURNACE TO
BURN NATURAL GAS OR LP GAS.
FAILURE TO FOLLOW THIS
WARNING CAN CAUSE A FIRE OR
EXPLOSION RESULTING IN
PROPERTY DAMAGE, PERSONAL
INJURY OR DEATH.
4. This furnace must be vented
through a good chimney to carry
combustion products outdoors as
described under the VENTING
INSTALLATION section of this
manual.
5. Provide adequate ventilation to the
furnace area.
6. Make sure supply and return air
ducts are sealed to the furnace
casing. These ducts must be
entirely separated from area
supplying combustion and
ventilation air.
7. Disconnect electrical power before
servicing appliance.
SAFETY RULES
LOCATION REQUIREMENTS AND CONSIDERATIONS
INSTALLATION INSTRUCTIONS
WARNING
!
WARNING
!
WARNING
!
WARNING
!
WARNING
!
5
FIGURE 1
DIMENSIONS AND CLEARANCES TO COMBUSTIBLES
COMBUSTION AIR SUPPLY
THIS FURNACE MUST BE PROVIDED WITH ENOUGH FRESH AIR
FOR PROPER COMBUSTION AND
VENTILATION OF FLUE GASES.
SOME HOMES MAY REQUIRE THAT
OUTSIDE AIR BE SUPPLIED TO THE
FURNACE AREA. FAILURE TO
PROVIDE ENOUGH FRESH AIR CAN
CAUSE DEATH FROM CARBON
MONOXIDE POISONING.
Adequate facilities for combustion and
ventilation must be provided in
accordance with section number 1-5,
“Air for Combustion and Ventilation,” of
the
Standard for Installation of Oil
Burning Equipment, NFPA No. 31
,
latest edition or other applicable
provisions of local building codes. The
flow of combustion air to the furnace
area must not be obstructed.
Important: Air for combustion and
ventilation must not come from a
corrosive atmosphere. Any failure due
to corrosive elements in the atmosphere
is excluded from warranty coverage.
Combustion air must be free of acidforming chemicals such as sulphur,
fluorine and chlorine. These elements
are found in aerosol sprays, detergents,
bleaches, cleaning solvents, air
fresheners, paint and varnish removers,
refrigerants and many other commercial
and household products. Vapors from
these products when burned in a flame
form acidic compounds and are highly
corrosive when they condense.
When appliances are installed within a
confined space and combustion air is
taken from within the heated space, the
air supply must be through two
permanent openings of equal area, one
located within 12 inches of the ceiling
and one within 12 inches of the floor
(see figure 2). Refer to the rating plate
label on the furnace for information on
the minimum free area of these two
openings.
When appliances are installed in an
unconfined space in a building of conventional frame, brick or stone
construction, infiltration normally is
adequate to provide for combustion
ventilation and draft control dilution. If
the unconfined space is within a
building of unusually tight construction,
a supply of combustion, ventilation and
draft control dilution air must be
obtained from outdoors or spaces freely
connected to the outdoors. Under these
conditions a permanent opening or
openings having a total free area of not
less than 1 sq. in. per 5,000 BTU/HR of
total input rating of all appliances shall
be provided. This code is found in
NFPA 31, Standard for Installation of Oil
Burning Equipment
. Other State,
Provincial, and Local codes may apply,
check with local inspectors.
When appliances are installed in a
confined space within a building of
unusually tight construction, air for
combustion must be obtained from
outdoors or from spaces or ducts freely
drawing from the outdoors. Under these
WARNING
!
Figure 2
Openings for confined spaces
6
conditions, two openings of
approximately equal area (one located
near the top and one located near the
bottom of the enclosure) must be
provided each with a total free area of not
less than 1 square inch per 4,000 BTU’s /
Hr. of total input rating of all appliances in
the enclosure (see figure 3).
If horizontal ducts are used, each
opening shall have a free area of not
less than 1 sq. in. per 2,000 BTU/HR of
total input of all appliances in the
enclosure (see figure 4).
Appliances installed in confined
spaces may be installed with ventilation
air from inside the building and
combustion air from outdoors. Consult
state and local codes and the
NFPA
No. 31, Standard for Installation of Oil
Burning Equipment
for specific details
(see figure 5 for an example).
Appliances installed in confined
spaces with all required air coming
from the outdoors may also get inlet
air from continuously ventilated crawl
spaces and outlet air to a ventilated
attic (see figure 6).
"NFPA 31, Standard for Installation of
Oil Burning Equipment"
defines
"confined space" and "unconfined
space" as follows.
Confined Space - Any space whose
volume is less than 50 cu. ft. per 1,000
BTU/HR (4.8 M3 per KW) of the
aggregate input rating of all fuel-burning
appliances installed therein.
Unconfined Space - Any space whose
volume is equal to or greater than 50
cu. ft. per 1,000 BTU/HR (4.8 M3 per
KW) of the aggregate input rating of all
fuel-burning appliances installed
therein. Rooms connecting directly with
the space in which the appliances are
located by means of openings that have
no doors or closures, unless fully
louvered, shall be considered part of the
unconfined space.
When determining if the furnace is
located in a confined or unconfined
space it is important to realize that
some buildings are so tight that normal
infiltration does not meet air
requirements for proper combustion or
venting and outside air must be
introduced.
Important: All applicable codes must
be followed when providing air to the
confined space.
Figure 3
All air from ventilated attic
Figure 4
Directly connecting horizontal
ducts to outdoors
Figure 5
Inside Ventilation Air, Outside
Combustion Air
Figure 6
Outside Air From Attic and Crawl Space
7
CIRCULATING AIR SUPPLY
Plenum chambers and air ducts must
be installed in accordance with the
Standard for the Installation of Air
Conditioning and Ventilating Systems,
NFPA No. 90A, or the Standard for the
Installation of Warm Air Heating and
Air Conditioning Systems, NFPA No.
90B.
The circulating air supply may be
taken: (1) exclusively from return air
ducts from several rooms, or (2)
combined with outside air. When
outside air is utilized, the system
should be designed and adjusted such
that the temperature of the combined
return air to the furnace will not be
below 50°F during the heating season.
When using a combination of outside
air and return air, be sure the ducts are
so designed and a diverting damper so
installed that the volume of circulating
air entering the furnace cannot be
reduced or restricted below that which
would normally enter through the
circulating air intake of the furnace.
When the furnace is installed so that
the supply ducts carry air circulated by
the furnace to areas outside the space
containing the furnace, the return air
shall be handled by a duct or ducts
sealed to the furnace casing and
terminated outside the space
containing the furnace.
IF THERE IS NO COMPLETE
RETURN AIR DUCT SYSTEM, THE
RETURN AIR CONNECTION MUST
RUN FULL SIZE TO A LOCATION
OUTSIDE THE UTILITY ROOM OR
SPACE HOUSING THE FURNACE
TO PREVENT A NEGATIVE
PRESSURE ON THE VENTING
SYSTEMS. A NEGATIVE PRESSURE
CAN DRAW PRODUCTS OF
COMBUSTION INTO CIRCULATING
AIR.
NEVER ALLOW THE PRODUCTS OF
COMBUSTION OR THE FLUE
PRODUCTS TO ENTER THE RETURN
AIR DUCTWORK OR THE
CIRCULATING AIR SUPPLY. ALL
RETURN DUCTWORK MUST BE
ADEQUATELY SEALED AND
SECURED TO THE FURNACE WITH
SHEET METAL SCREWS, AND
JOINTS TAPED. ALL OTHER DUCT
JOINTS MUST BE SECURED WITH
APPROVED CONNECTIONS AND
SEALED AIRTIGHT.
FAILURE TO PREVENT PRODUCTS
OF COMBUSTION FROM BEING
CIRCULATED INTO THE LIVING
SPACE CAN CREATE SOOT
DAMAGE, SMOKE, ODORS OR
CARBON MONOXIDE POISONING.
IMPORTANT: One of the most
common causes of trouble in forced
air heating systems is insufficient
return air to the furnace. The return air
system should be approximately equal
to or greater than the area of the warm
air discharge. CONSULT LOCAL
CODES FOR SPECIAL
REQUIREMENT.
DO NOT, UNDER ANY
CIRCUMSTANCES, CONNECT
RETURN OR SUPPLY DUCTWORK
TO OR FROM ANY OTHER HEAT
PRODUCING DEVICE SUCH AS A
FIREPLACE INSERT, STOVE, ETC.
DOING SO MAY RESULT IN FIRE,
CARBON MONOXIDE POISONING,
EXPLOSION, PERSONAL INJURY,
PROPERTY DAMAGE OR DEATH.
Install the cold air return to terminate
through the floor under the furnace. A
direct connection should be made to
the bottom of the furnace. For
installations where return air ducts
cannot be run under the floor, return air
may be taken from the sides and/or
back by cutting the furnace casing and
installing the appropriate accessory.
NOTE: Where the maximum air flow is
1800 CFM or more, both sides or the
bottom must be used for return air.
When a cooling coil is used in
conjunction with the furnace, it must be
installed downstream of the outlet end
of the furnace or in parallel with the
furnace to avoid condensation in the
heating element.
If the furnace is installed in parallel with
a cooling unit, the damper or other
means used to control the flow of air
must be adequate to prevent chilled air
from entering the furnace, and if
manually operated must be equipped
with means to prevent operation of the
other unit unless the damper is in the
full heat or cool position.
IMPORTANT: Air openings in the
casing front, return air grilles and warm
air registers must not be obstructed.
BLOWER AND BURNERS MUST
NEVER BE OPERATED WITHOUT
BLOWER DOOR IN PLACE. THIS IS
TO PREVENT DRAWING FUMES
(WHICH COULD CONTAIN
ANNOYING AND HAZARDOUS
GASES) INTO THE HOME THAT
COULD RESULT IN PERSONAL
INJURY OR DEATH.
FLUE AND CHIMNEY
EXHAUST
The vent connector should be as short
as possible and installed so that it has
a continuous rise from the furnace to
the chimney or flue.
The number of elbows should be
minimized and the flue pipe shnould be
joined with sheet metal screw and
properly supported with suitable pipe
hangers.
A barometric draft regulator is required
in each furnace vent connector and
must be installed before the vent
connector enters the chimney or flue.
NOTE: The size of the draft regulator
diameter must be no smaller than the
vent connector diameter.
The vent connector should be the
same size as the furnace flue pipe
connection. The sizes are:
FURNACE FLUE SIZE
BTU OUTPUT INCHES
056 5
067 5
084 5
095 5
112 5
130 7
150 7
CHIMNEY SIZE
RECOMMENDATIONS
The following table shows
recommended size and height for
chimneys based on total BTU input of
all the oil appliances being vented.
GROSS BTU RECTANGULAR ROUND MINIMUM
INPUT TILE TILE HEIGHT
(INCHES) (INCHES) (FEET)
144,000 81⁄2 x 81⁄2 8 20
235,000 81⁄2 x 13 10 30
372,000 13 x 13 12 35
516,000 13 x 18 14 40
612,000 — 15 45
768,000 18 x 18 — 50
960,000 20 x 20 18 55
VENTING
Unit must be vented through a chimney
or flue. Check chimney for soot, leaks,
obstruction and proper height to
prevent down draft. Clean chimney and
base if necessary.
The height of the chimney or flue shall
be at least 3 feet above the highest
point where it passes through the roof
of a building and at least 2 feet higher
than any portion of a building within 10
feet of such chimney.
WARNING
!
WARNING
!
WARNING
!
Install a single wall, vent connector
from flue outlet to chimney, sloping flue
pipe continuously upward (at least 1/4
inch per foot) toward chimney. The
vent connector should be the same
diameter as the flue collar of the
furnace for the entire length of run and
should not exceed 10 feet in length.
Avoid sharp turns that would create
resistance to the flow of flue gasses.
Vent connector should not extend
beyond the inside wall of the chimney
and must be firmly cemented to
masonry.
IMPORTANT: This furnace is agency
approved by UL, ULC and CSA for use
with the Tjernlund SS1-R sidewall vent
system when installed in accordance
with the installation instructions for the
SS1-R provided by Tjernlund. The
maximum vent length is 10 feet with 3
elbows when venting with the SS1-R.
This is the only option given for side
wall venting. It should be noted that
common venting with another
appliance is not an option when using
the Tjernlund SS1-R. The use of any
other type of power vent system is not
approved or recommended by the
manufacturer.
No other appliances or heating
equipment should be connected to the
vent connector servicing the furnace.
Bolt, screw and/or support joints to
avoid sag. Fasten the single-wall vent
connector to the outlet collar of the
furnace with at least two sheet metal
plumb. Tilting causes erratic damper
operation. Installation of a barometric
damper must be in accordance with the
Installation and Operation Instructions
provided with the damper.
The following standards and codes will
help to make the installation. Current
editions of these standards can be
obtained from:
American National Standards Institute,
1430 Broadway, New York, NY 10018
OIL BURNER / PRIMARY
CONTROL
Oil burner and primary control are
mounted to the furnace as a complete
assembly. Standard equipment
consists of the oil burner, primary
control and flame sensor mounted as a
single assembly to the furnace. The
heat/cool relay is mounted to the unit’s
main junction box and the flame sensor
(cadmium sulfide cell) is enclosed in
the burner housing above the blower
wheel.
The standard oil burner is equipped
with a single stage fuel pump. This
single stage fuel pump may be used in
either a one or two pipe system. If a
two pipe system is required (burner is
screws. Refer to Figure 1 for distances
to combustible materials.
DEVICES ATTACHED TO THE FLUE
OR VENT FOR THE PURPOSE OF
REDUCING HEAT LOSS UP THE
CHIMNEY HAVE NOT BEEN TESTED
AND HAVE NOT BEEN INCLUDED IN
THE DESIGN CERTIFICATION OF
THIS FURNACE. WE, THE
MANUFACTURER, CANNOT AND
WILL NOT BE RESPONSIBLE FOR
INJURY OR DAMAGE CAUSED BY
THE USE OF SUCH UNTESTED
AND/OR UNCERTIFIED DEVICES,
ACCESSORIES OR COMPONENTS.
BAROMETRIC DRAFT
CONTROL
The barometric damper (see figure 7) is
a control installed in the flue pipe to
regulate the draft in the furnace. If the
draft increases in the chimney, the
damper opens to maintain the preset
draft in the furnace. Should the draft
decrease in the chimney, the damper
will close to maintain the preset draft of
the oil furnace. A barometric damper is
supplied with each furnace and must be
installed by the following the
instructions supplied by the
manufacturer. The barometric damper
control should be installed between the
flue outlet of the furnace and the
chimney (see figure 8). The barometric
damper control should be set for proper
draft on start up after the furnace has
been operating for 10 to 15 minutes.
See Oil Burner Adjustment Procedure
Section for proper draft settings.
On start up, the furnace must be set
for field conditions with a
combustion kit for proper operation.
Note: Always use a seperate
barometric damper for each oil-fired
appliance. Install the barometric
damper with its hinge level and the face
8
TABLE 1. Metal Thickness for Galvanized Steel Pipe
Connectors
Diameter of Galvanized Minimum
Connector Sheet Thickness
(in.) (mm) Gauge No. (in.) (mm)
< 6 < 152 26 0.019 0.48
≥ 6 to ≤ 10 ≥ 152 to ≤ 254 24 0.024 0.61
> 10 to ≤ 16 > 254 to ≤ 406 22 0.029 0.74
>16 > 406 16 0.056 1.42
Figure 8
Recommended Barometric Damper Locations
Figure 7
Barometric Damper
ELECTRIC WIRING
TURN OFF ELECTRIC POWER AT
FUSE BOX OR SERVICE PANEL
BEFORE MAKING ANY ELECTRICAL
CONNECTIONS. FAILURE TO DO SO
CAN CAUSE ELECTRICAL SHOCK
RESULTING IN PERSONAL INJURY
OR DEATH.
CABINET MUST BE PERMANENTLY
GROUNDED. A GROUND SCREW IS
PROVIDED IN THE JUNCTION BOX
FOR THIS PURPOSE.
GROUND CONNECTION MUST BE
COMPLETED BEFORE MAKING ANY
LINE VOLTAGE CONNECTIONS.
FAILURE TO GROUND APPLIANCE
COULD RESULT IN ELECTRICAL
SHOCK, FIRE, PROPERTY DAMAGE,
PERSONAL INJURY OR DEATH.
Installation of the electric supply line
should be in accordance with the
National Electric Code ANSI/NFPA No.
70, latest edition, and local building
codes.
Use a separate fused branch electrical
circuit containing a properly sized fuse
or circuit breaker. Run this circuit
directly from the main switch box to an
electrical disconnect (switch) which
must be readily accessible and located
within sight of the furnace.
above tank) the lift and length of run
must be considered so as not to
overload the fuel unit. NOTE: If the
length of run and the lift is beyond the
recommended limits of the charts
below, a booster prep unit should be
used.
TANK AND OIL LINES
Oil storage tank should be of an
approved type installed in accordance
with the National Board of Fire
Underwriters and local regulations.
In accordance with standards of the
National Board of Fire Underwriters,
inside tanks should be at least seven
feet from burner, convenient for
installing the fill, vent and feed lines.
The fill and vent lines should be run to
a convenient outdoor location and
should slope downward to tank. They
should terminate in approved fittings.
An approved type of oil gauge should
be installed in accordance with
manufacturer’s instructions. Copper
tubing no smaller than 3/8” O.D. is
recommended for suction or feed line
on basement tank installations. A hand
shut-off valve should be installed at the
tank outlet. An oil filter should be
installed in the suction or feed line.
Underground tanks or tanks below the
burner may require a two-pipe hookup. A check valve should be installed
in the suction line to keep the line
primed and the internal by-pass in the
fuel unit must be plugged as per
instructions furnished with the burner.
All oil lines must be tight and free of
traps. Lines should be buried or
otherwise protected from mechanical
injury. (See Typical Installation
Diagrams.)
9
WARNING
!
WARNING
!
Lift (in feet) 0 2 4 6 8 10 12 14 16 18
3/8" O.D.
68 63 58 53 48 42 37 32 27 22
Tubing
1/2" O.D.
100 100 100 100 100 100 100 100 100 88
Tubing
Recommended Maximum Length of Tubing
Used on a Two Stage (3450 RPM) Pump Two
Pipe System
Lift (in feet) 0 1 2 3 4 5 6 7 8 9 10
3/8" O.D.
53 40 45 41 38 33 20 25 21 18 13
Tubing
1/2" O.D.
100 100 100 100 100 100 100 99 83 68 52
Tubing
Recommended Maximum Length of Tubing
Used on a Single Stage (3450 RPM) Pump Two
Pipe System
Connect from the disconnect to the
junction box on the furnace inside the
control compartment. Discard test
leads and connect the line voltage
wires in their place. (See appropriate
wiring diagrams.)
NOTE: H (hot) and N (neutral) polarity
must be observed when making field
connections to the furnace. The limit
control will not interrupt H (hot) circuit
if leads are reversed.
THERMOSTAT
Install the room thermostat in
accordance with the instruction sheet
packed in the box with the thermostat.
Run the thermostat lead wires inside
the blower compartment and connect
to low voltage terminals as shown on
the wiring diagram. Never install the
thermostat on an outside wall or where
it will be influenced by drafts,
concealed hot or cold water pipes or
ducts, lighting fixtures, radiation from
fireplace, sun rays, lamps, televsions,
radios or air streams from registers.
Refer to instructions packed with the
thermostat for “heater” selection or
adjustment.
NOTE: Do not use 24 volt control
wiring smaller than No. 18 AWG.
HEAT ANTICIPATOR
SETTING
The heating thermostat anticipator
should be set for a 0.10 amp draw.
TABLE 1
LOW VOLTAGE WIRING
SOLID COPPER WIRE - AWG
3.0 16 14 12 10 10 10
2.5 16 14 12 12 10 10
2.0 18 16 14 12 12 10
50 100 150 200 250 300
LENGTH OF RUN - FEET ➀
➀ The total wire length is the distance from the furnace to the thermostat and back
to the furnace.
NOTE: Do not use 24 volt control wiring smaller than No. 18.
THERMOSTAT
LOAD - AMPS
10
TYPICAL INSTALLATION DIAGRAMS
FIGURE 9. TWO PIPE INSTALLATION
FIGURE 10. ONE PIPE INSTALLATION
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