Page 1
Oil
Model
NX
Burner
WARNING
!
Incorrect installation, adjustment, or misuse of this burner could result in death, severe
personal injury, or substantial property damage.
To the Homeowner or Equipment Owner:
Please read and carefully follow all instructions
•
provided in this manual regarding your responsibilities in caring for your heating equipment.
Contact a professional, qualifi ed service agency
•
for installation, start-up or service work.
RWB 6104 BNX R02 Page 1
Potential for Fire, Smoke and Asphyxiation Hazards
To the Professional, Qualifi ed Installer or
Service Agency:
Please read and carefully follow all instructions
•
provided in this manual before installing, starting,
or servicing this burner or heating system.
The Installation must be made in accordance with
•
all state and local codes having jurisdiction.
Page 2
Table of Contents
General Information
Hazard Defi nitions ........................................................................................................................................3
Owner’s Responsibility ................................................................................................................................3
Information To Be Used Only By Qualifi ed Service Technicians
General Information .........................................................................................................................................4
General Specifi cations………………………………………………………….. ....................................................4
Notice Special Requirements ...........................................................................................................................4
Inspect/Prepare Installation Site .................................................................................................................4
Clearances to Burner and Appliance ...............................................................................................................4
Inspect Chimney or Direct Vent System .........................................................................................................4
Combustion Air Supply .....................................................................................................................................5
Direct/Sidewall Venting Application ................................................................................................................5
Fuel Line Installation .........................................................................................................................................5
Fuel Line Valves and Filters .............................................................................................................................5
Prepare the Burner ...........................................................................................................................................6
General .........................................................................................................................................................6
Low Fire Rate Baffl e (if specifi ed) ....................................................................................................................6
Mount Burner on Appliance .............................................................................................................................6
Connect Fuel Lines ...........................................................................................................................................6
Wiring Connection Diagram .............................................................................................................................7
Start the Burner and Set Combustion ......................................................................................................8
Start-up and Initial Settings ..............................................................................................................................8
Set Combustion with Test Instruments .........................................................................................................10
Cover Installation ............................................................................................................................................10
Trained Service Technician’s Regular Maintenance .........................................................................10
Removing Nozzle Line for Service .................................................................................................................11
Nozzle Installation ...........................................................................................................................................12
Check/Adjust Electrodes ................................................................................................................................12
Check Retention Head Alignment and Cad Cell Sighting ............................................................................13
Check/Adjust “Zero” Calibration ...................................................................................................................13
Blower Wheel Replacement ...........................................................................................................................14
Replacement Parts Diagram .......................................................................................................................15
Replacement Parts Diagram ...........................................................................................................................15
Replacement Parts List ...................................................................................................................................15
Beckett Limited Warranty Information ...................................................................................................16
Page 2 RWB 6104 BNX R02
Page 3
General Information
!
!
General Information
To the Owner:
Thank you for purchasing a Beckett NX burner
for use with your heating appliance. Please pay attention to the Safety Warnings contained within this instruction manual. Keep this manual for your records
and provide it to your qualifi ed service agency for use
in professionally setting up and maintaining your NX
burner.
Your NX burner will provide years of effi cient operation
if it is professionally installed and maintained by a qualifi ed service technician. If at any time the burner does
not appear to be operating properly, immediately con-
tact your qualifi ed service agency for consultation.
We recommend annual inspection/service of your
oil heating system by a qualifi ed service agency.
Hazard Defi nitions •
DANGER
!
avoided, will result in death, serious injury, or
property damage.
WARNING
!
if not avoided, could result in death, severe
personal injury, and/or substantial property
damage.
CAUTION
!
not avoided, may result in personal injury or
property damage.
Within the boundaries of the hazard warning,
there will be information presented describing
consequences if the warning is not heeded and
instructions on how to avoid the hazard.
Intended to bring special attention to information, but not
related to personal injury or property damage.
Indicates an imminently haz-
ardous situation, which, if not
Indicates a potentially
hazardous situation, which,
Indicates a potentially haz-
ardous situation, which, if
NOTICE
NOTICE
WARNING
!
Incorrect installation, adjustment,
and use of this burner could result in
severe personal injury, death, or substantial property damage from fi re,
carbon monoxide poisoning, soot or explosion.
Contact a professional, qualifi ed service agency for the
installation, adjustment and service of your oil heating
system. This work requires technical training, trade experience, licensing or certifi cation in some states and the
proper use of special combustion test instruments.
Please carefully read and comply with the following in-
structions:
Never store or use gasoline or other fl ammable
•
liquids or vapors near this burner or appliance.
Never attempt to burn garbage or refuse in this
•
appliance.
Never attempt to light the burner/appliance by
•
throwing burning material into the appliance.
Never attempt to burn any fuel not specifi ed and
•
approved for use in this burner.
Never restrict the air inlet openings to the burner
•
or the combustion air ventilation openings in the
room.
WARNING
!
Incorrect installation, adjustment,
and use of this burner could result
in severe personal injury, death, or
substantial property damage from
fi re, carbon monoxide poisoning, soot or explosion.
Please read and understand the manual supplied with
this equipment. This equipment must be installed, adjusted and put into operation only by a qualifi ed individual or
service agency that is:
Licensed or certifi ed to install and provide technical
•
service to oil heating systems.
Experienced with all applicable codes, standards and
•
ordinances.
Responsible for the correct installation and commis-
•
sion of this equipment.
Skilled in the adjustment of oil burners using combus-
•
tion test instruments.
The installation must strictly comply with all applicable
codes, authorities having jurisdiction and the latest revision of the National Fire Protection Association Standard
for the installation of Oil-burning Equipment, NFPA 31 (or
CSA B139 and B140 in Canada).
Regulation by these authorities take precedence over the
general instructions provided in this installation manual.
Owner’s Responsibility
Professional Service
Required
RWB 6104 BNX R02 Page 3
Page 4
General Information
General Specifi cations
•
Table 1 – Burner Specifi cations
Capacity Firing rate: - 0.40 – 1.75 GPH
Certifi cation/
Approvals
Fuels U. S No. 1 or No. 2 heating oil only (ASTM
Electrical Power supply - 120 volts AC, 60 Hz, single
Fuel pump Outlet pressure - Note 1
Air tube ATC code - See Table 2
Dimensions
(with cover)
*Note 1. See appliance manufacturer’s burner specifi cations for
recommended outlet pressure.
Table 2 – Air Tube Combinations (ATC)
Firing rate
(min-max) 5” 7” 9”
0.40-1.00 9-Slot NX50LG NX70LG NX90LG
0.40-1.00 6-Slot NX50LH NX50LH NX90LH
0.40-1.35 9-Slot NX50LB NX70LB NX90LB
0.40-1.35 6-Slot NX50LC NX70LC NX90LC
1.10-1.75 9-Slot NX50LD NX70LD NX90LD
1.10-1.75 6-Slot NX50LF NX70LF NX90LF
Input: Min. - 56,000 Btu
Max - 245,000 Btu
UL certifi ed to comply with ANSI/UL296 &
tested to CSA B140.0
D396)
Canada No. 1 stove oil or No. 2 furnace oil
only
phase
Operating load - 5.8 Amps max
Motor - 1/7 hp, 3450 rpm, NEMA 48M
frame PSC rotation CCW when
facing shaft end
Ignition - Continuous duty solid-state igniter
Height (maximum) - 12-1/2 inches
Width (maximum) - 15 inches
Depth - 9-1/4 inches
Air tube diameter - 3-1/4 inches
(gph)
Head ATC codes for usable air tube
lengths:
Notice Special Requirements
•
For recommended installation practice in Canada,
refer to the latest version of CSA Standard B139 &
B140.
Concealed damage — If you discover damage to
the burner or controls during unpacking, notify the
carrier at once and fi le the appropriate claim.
When contacting Beckett for service information —
Please record the burner serial number (and have
available when calling or writing). You will fi nd the
serial number on the silver label located on the left
rear of the burner. Refer to Figure 1.
Inspect/Prepare Installation Site
Clearances to Burner and Appliance
•
Provide space around burner and appliance for
ease of service and maintenance. Check the minimum clearances against those shown by the appliance manufacturer and by applicable building
codes.
Inspect Chimney or Direct Vent System
•
WARNING
!
Failure to provide adequate air supply could se-
riously affect the burner performance and result
in damage to the equipment, asphyxiation, explosion or fi re hazards.
The burner cannot properly burn the fuel if it is not
•
supplied with a reliable combustion air source.
Follow the guidelines in the latest editions of the
•
NFPA 31 and CSA-B139 regarding providing adequate air for combustion and ventilation.
Adequate Combustion
and Ventilation Air Supply
Required
Inspect the chimney or vent. Make sure it is prop-
erly sized and in good working condition. Follow the
instructions supplied by the appliance manufactur-
Figure 1. Burner label location
er.
Page 4 RWB 6104 BNX R02
Page 5
Combustion Air Supply Information
!
•
See NFPA Standard 31 for complete details.
Appliances located in confi ned spaces: All
confi ned spaces should have two (2) permanent
openings; one near the top of the enclosure and
one near the bottom of the enclosure. Each opening must have a free area of not less than one (1)
square inch per 1,000 BTU’s per hour of the total
input rating of all appliances within the enclosure.
The openings should have free access to the building interior, which should have adequate infi ltration
from the outside.
Inspect/Prepare Installation Site
Fuel Line Installation •
CAUTION
!
Damage to the pump could cause impaired burn-
er operation, oil leakage and appliance soot-up.
Never use Tefl on tape on fuel oil fi ttings.
•
T ape fragments can lodge in fuel line components
•
and fuel unit, damaging the equipment and preventing proper operation.
Use oil-resistant pipe sealant compounds.
•
Do Not Use Tefl on Tape
Exhaust fans and other air-using devices: Size
air openings large enough to supply all air-using
devices in addition to the minimum size required
for combustion air. If there is any possibility of the
equipment room developing a negative pressure
due to exhaust fans, clothes dryers, etc., either pipe
combustion air directly to the burner or provide a
sealed enclosure for the burner and supply it with
its own combustion air supply.
Direct/Sidewall Venting Application
•
WARNING
!
Connect Outside Air Duct
to NX Adapter
Failure to install adapter properly
could result in impaired combustion,
appliance soot-up, puffback of smoke,
and fi re or asphyxiation hazards.
The outside air adapter must be installed by strictly
•
following the kit installation instructions.
DO NOT attempt to install outside air piping without
•
using the outside air adapter and instructions provided.
Abundant fresh air is required for proper combus-
•
tion.
For direct vent installations, follow instructions pro-
vided with appliance and direct vent system. Outside combustion air is required for direct venting.
When installing an NX outside air adapter (Beckett
Part Number 1014U), refer to the instruction sheet
supplied with the adapter. This kit allows combustion air to be piped directly to the burner. The NX
outside air adapter kit may also be used for chimney vent applications that require outside combustion air.
Route the fuel line through the opening in the bottom
of the burner cover. Continuous lengths of heavy
wall copper tubing are recommended. Always use
fl are fi ttings. Never use compression fi ttings.
Always install fi ttings in accessible locations. To
avoid vibration noise, fuel lines should not run
against the appliance or ceiling joists.
Fuel Line Valves and Filter
•
Install two high quality fusible-handle design shutoff
valves in accessible locations on the oil supply line
to comply with the NFPA31 Standard. Locate one
close to the tank and the other close to the burner,
upstream of the fi lter.
Install a generous capacity fi lter inside the building
between the fuel tank shutoff valve and the burner,
locating both the fi lter and the valve close to the
burner for ease of servicing. Filter should be rated
for 50 microns or less.
NOTICE
To further protect the fuel supply system and re-
duce nozzle orifi ce plugging with fi ring rates below
0.75 gph, a dual fi ltration system can be installed.
This typically consists of a 50 micron primary fi lter,
located near the fuel tank and a secondary fi lter rat-
ed for at least 10 microns located near the burner.
RWB 6104 BNX R02 Page 5
Page 6
Inspect/Prepare Installation Site
!
Prepare the Burner
•
General
In most cases, the burner is ready to mount to the
appliance. There can be situations where the burner needs to be reconfi gured to perform properly in
the appliance. Review the appliance manufacturer’s specifi cations prior to installing to determine if
any modifi cation is required to properly confi gure
the burner.
Instruction on how to perform the following burner
preparation tasks can be found in the Professional
Maintenance section.
Remove / install burner nozzle
•
Check head/air adjusting plate
•
Low Firing Rate Baffl e (If specifi ed)
•
The NX Low Firing Rate Baffl e (LFRB), refer to Fig-
ure 2, reduces the burner airfl ow and pressure. Re-
fer to the appliance manufacturer’s instructions or
the Beckett OEM Specifi cation Guide part number
6711. To avoid poor burner performance, do not
omit the baffl e when specifi ed or install the baffl e
when not specifi ed.
Mount Burner on Appliance
•
Verify that the air tube installed on the burner pro-
vides the correct insertion depth. Refer to Figure
3.
The end of the air tube should normally be 1/4”
back from the inside wall of the combustion chamber. Never allow the leading edge of the retention
ring to extend into the chamber, unless otherwise
specifi ed by the appliance manufacturer.
Bolt the burner to the appliance using the factory-
welded fl ange.
Figure 3. – Mounting Burner in Appliance
SK9668
Note:
The Low Firing Rate Baffl e may have been factory
installed. If fi eld installation is required, insert the
Low Fire Rate Baffl e into the housing, aligning the
mounting screw hole with the notched hole in the
burner housing. Make note that the curved end
of the baffl e should be below the motor bolt boss.
Tighten the thread cutting screw to 12-24 in-lbs.
Figure 2. – Mounting Low Fire Rate Baffl e in
burner housing.
SK9698
Connect Fuel Lines•
WARNING
!
Failure to comply could cause immediate pump
seal failure, pressurized oil leakage and the potential for a fi re and injury hazard.
The burner is shipped without the by-pass plug in-
•
stalled.
Install the by-pass plug in two-pipe oil supply systems
•
ONLY.
CAUTION
!
Damage to the fi lter or pump seals could cause
oil leakage and a fi re hazard.
The oil supply inlet pressure to the burner cannot
•
exceed 3 psig.
Insure that a pressure limiting device is installed
•
in accordance with the latest edition of NFPA 31.
Do not install valves in return line.
•
Gravity Feed Systems: Always install an anit-
•
siphon valve in the oil supply line or a solenoid
valve (RWB Part # 2182602U) in the pump/nozzle discharge tubing to provide backup oil fl ow
cut-off protection.
Do Not Install By-pass Plug
with 1-Pipe System
Oil Supply Pressure
Control Required
Page 6 RWB 6104 BNX R02
Page 7
Start the Burner and Set Combustion
The burner is supplied with either a one-stage
pump or a two-stage pump based on the oil supply
system requirements. Consult the instructions provided with the pump for installation specifi cations.
When installing a one-pipe system, connect the
inlet line to the pump inlet. The fuel pump may be
installed with gravity feed or lift. The maximum allowable lift for a single pipe installation is 8 ft.
When installing a two-pipe system, remove the
1/16” pipe by-pass plug from plastic bag attached
to fuel unit. Remove 1/4” plug from return port.
Insert and tighten the by-pass plug. Attach return
and inlet lines. The return line should terminate approximately 3 to 4” above supply line inlet. Failure
to do this may introduce air into the system and
could result in loss of prime.
•
Wiring Connections Diagram
Refer to the appliance manufacturer’s wiring dia-
gram prior to connecting the burner wiring. All wiring must be in accordance with the latest revision of
National Electric Code NFP A 70 and all local codes
and regulations.
The R7184 primary control with valve-on delay and
burner motor-off delay, shown in Figure 4, requires
a constant 120 volt AC power source supplied to
the black wire on the control. (Refer to the appliance manufacturer’s instructions.) The red wire
goes to the appliance limit circuit. Please note that
other control manufacturers may use different wire
colors for power and limit connections.
Figure 4a. – Typical Burner Control Wiring
Refer to the appliance manufacturer’s wiring diagram for actual specifi cations.
RWB 6104 BNX R02 Page 7
Page 8
Start the Burner and Set Combustion
Figure 4b. – Typical Burner Sequence of Operation
1. STANDBY. The burner is idle, waiting for a call for
heat. When a call for heat is initiated, there is a 310 second delay while the control performs a safe
start check.
2. VALVE-ON DELAY. The ignition and motor are
turned on for a 15 second valve-on delay.
3. TRIAL FOR IGNITION (TFI). The fuel valve is
opened. A fl ame should be established within the
15 second lockout time.
4. LOCKOUT. If fl ame is not sensed by the end of
the TFI, the control shuts down on safety lockout
and must be manually reset. If the control locks out
three times in a row, the control enters restricted
lockout.
5. IGNITION CARRYOVER. Once fl ame is estab-
lished, the ignition remains on for 10 seconds to
ensure fl ame stability before turning off. If the con-
trol is wired for intermittent duty ignition, the ignition
unit stays on the entire time the motor is running.
6. RUN. The burner runs until the call for heat is satisfi ed. The burner is then sent to burner motor off
delay, if applicable, or it is shut down and sent to
standby.
7. RECYCLE. If the fl ame is lost while the burner is
fi ring, the control shuts down the burner, enters a 60
second recycle delay, and then repeats the above
ignition sequence. If fl ame is lost three times in a
row, the control locks out to prevent cycling with
repetitious fl ame loss due to poor combustion.
8. BURNER MOTOR-OFF DELAY. The fuel valve is
closed and the burner motor is kept on for the selected motor-off delay time before the control returns the burner to standby.
Start the Burner and Set Combustion
WARNING
!
Failure to follow these instructions
could lead to equipment malfunction and result in heavy smoke
emission, soot-up, hot gas puffback, fi re and asphyxiation hazards.
Do not attempt to start the burner when excess oil
•
has accumulated in the appliance, the appliance
is full of vapor, or when the combustion chamber
is very hot.
Do not attempt to re-establish fl ame with the
•
burner running if the fl ame becomes extinguished
during start-up, venting, or adjustment.
Vapor-Filled Appliance: Allow the unit to cool
•
off and all vapors to dissipate before attempting
another start.
Oil-Flooded Appliance: Shut off the electrical
•
power and the oil supply to the burner and then
clear all accumulated oil before continuing.
If the condition still appears unsafe, contact the
•
Fire Department. Carefully follow their directions.
Keep a fi re extinguisher nearby and ready for
•
use.
Start-up and Initial Settings
•
Open the shutoff valves in the oil supply line to
1.
the burner.
Referencing Figure 5a or 5b, verify and/or set the
2.
Head/Air Adjustment Pointer to the value specifi ed by the Appliance Manufacturer. If the Appliance Manufacturer’s values are not available,
refer to Table 3a or 3b. (This is an initial air set-
ting for the pump bleeding procedure only.)
Calibrated test instruments must be used for the
fi nal head/air adjustment.
Explosion and Fire Hazard
Adjust the thermostat or temperature controller
3.
to call for heat. (Note: return controller(s) to the
original settings upon completion of burner installation or service.)
Close the line voltage switch to start the burner. If
4.
the burner does not start within the 3 to 10 second
safety start check timing, you may have to reset
the safety switch on the burner primary control.
Bleed the air from the fuel pump as soon as the
5.
burner motor begins rotating.
61351
Prepare for combustion tests by drilling a
6.
sampling hole in the fl ue pipe between the appli-
ance and the barometric draft regulator. Seal this
hole when testing is complete. (See appliance
manufacturer’s instructions for location.)
1/4
Page 8 RWB 6104 BNX R02
”
Page 9
Start Burner and Set Combustion
Figure 5a. – Old Style Head/air Adjustment
Plate
Scale
Upper Acorn Nut
(Lock Zero
Calibration)
Lower Acorn Nut
(Lock Air Setting)
Pointer
Splined
Nut
Adjustment
Nut
SK9667
Figure 5b. – New Style Head/air Adjustment
Plate
Zero Setting
Locking Nut
Pointer
Adjustment
Screw
Am52000
Check/Adjust Zero Calibration for older style
7.
Head/Air Adjustment Mechanism. Refer to
Figure 5a.
Loosen the splined nut and lower acorn nut
a.
approximately one turn. (DO NOT loosen the
upper acorn nut. This is used only for setting
the zero adjustment.) (See Figure 5a.)
A 5/16” nut driver or fl at blade screwdriver
b.
can be used to turn the adjustment screw for
head/air setting.
Check/Adjust Zero Calibration for newer style
8.
Head/Air Adjustment Mechanism. Refer to
Figure 5b.
Slightly loosen the zero setting acorn.
a.
Turn the screw until the reading is set to zero.
b.
(Mid-point of pointer should line up with zero.
Turn the air adjustment screw counterclock-
c.
wise to adjust the plate with the pointer to the
zero position.
Slide the nozzle line assembly forward until
d.
the retention head engages the fi xed stops in
the retention ring at the end of the air tube.
Tighten the zero setting acorn nut.
e.
The rear door must be closed. The adjustment
f.
screw may now be turned clockwise to adjust
the head/air setting.
Turn the adjusting screw to a setting 1/2 num-
g.
ber lower than the proper setpoint as indicated
in Tables 3a and 3b. Then turn the adjusting
screw counterclockwise to the proper setting.
h.
Tighten the spline nut after the head/air setting
has been adjusted.
Table 3a. – NX Burners
NX Air Tube & Head Combinations
Head/Air
Setting
0.5 0.40 – 0.50 -- 1.10 – 1.25
1.0 0.45 – 0.60 -- 1.20 – 1.35
2.0 0.55 – 0.70 0.85 – 1.05 1.30 – 1.45
3.0 0.65 – 0.80 0.95 – 1.15 1.40 – 1.55
4.0 0.75 – 0.90 1.05 – 1.25 1.50 – 1.65
5.0 0.85 – 1.00 1.15 – 1.35 1.60 – 1.75
LG - (9-slot head)
LH - (6-slot head)
LB - (9-slot head)
LC - (6-slot head)
LD - (9-slot head)
LF - (6-slot head)
The NX burner has a reduced diam-
eter air tube, precision-designed air
throttle cup and combustion head for
improved performance. This design
provides very accurate control of the
air/fuel ratio, but the light reaching
the cad cell through small holes in
these components is limited. Because of this, the average cad cell
resistance may be higher than
conventional burners with larger
NOTICE
openings.
Table 3b. – NX Burner with Low Fire Rate Baffl e (LFRB)
Installed
NX Air Tube & Head Combinations
Head/Air
Setting
0.5 – 0.40 – 0.60 –
1.0 0.40 – 0.55 0.50 – 0.70 1.10 – 1.25
2.0 0.50 – 0.65 0.60 – 0.80 1.20 – 1.35
3.0 0.60 – 0.75 0.70 – 0.90 1.30 – 1.45
4.0 0.70 – 0.85 0.80 – 1.00 1.40 – 1.55
5.0 0.80 – 0.95 0.90 – 1.10 –
RWB 6104 BNX R02 Page 9
LG - (9-slot head)
LH - (6-slot head)
LB - (9-slot head)
LC - (6-slot head)
LD - (9-slot head)
LF - (6-slot head)
Use factory-set or manufacturer’s
recommended Head/Air Setting
for ‘Starting the Burner and Set-
ting Combustion’. The Head/Air
Settings shown in Figures 3, are
provided for reference purposes
and represent a general range of
rates and settings. Individual appliances, vent systems, and fi eld
conditions will impact the overall
burner set up required for satisfactory combustion performance.
NOTICE
Page 10
Trained Service Technician’s Regular Maintenance
Set Combustion with Test Instruments
•
Trained Service Technician’s Regular
Maintenance
Allow the burner to run for approximately 5 to 10
1.
minutes.
Set the stack or over-fi re draft to the level speci-
2.
fi ed by the appliance manufacturer.
Natural Draft Applications; typically over-fi re
•
draft is -0.01” or -0.02” w.c.
Direct Venting; typically may not require draft
•
adjustment.
High Effi ciency/Positive Pressure Appliances;
•
also vary from traditional appliances (see manufacturer’s recommendations).
Follow these fi ve steps to properly adjust the
3.
burner:
Step 1: Adjust the head/air until a trace of smoke
is achieved. This can be accomplished by turning the screw on the head/air adjustment plate
assembly to increase air (CCW) or decrease air
(CW).
Step 2: At the trace of smoke level, measure the
CO2 (or O2) . This is the vital reference point for
further adjustments. Example: 13.5% CO2 (2.6%
O2)
Step 3: Increase the air to reduce the CO2 by 1.5
to 2 percentage points. (O2 will be increased by
approximately 2.0 to 2.7 percentage points.) Example: Reduce CO2 from 13.5% to 11.5% (2.6%
to 5.3% O2).
Step 4: Recheck smoke level. It should be Zero.
This procedure provides a margin of reserve air
to accommodate variable conditions. If the draft
level has changed, recheck the smoke and CO2
levels and readjust burner, if necessary.
Step 5: Once the combustion has been set, tighten
the lower acorn nut and splined nut on the air adjustment assembly. See Figure 5.
WARNING
!
Incorrect installation, adjustment,
and use of this burner could result
in severe personal injury, death, or
substantial property damage from
fi re, carbon monoxide poisoning, soot or explosion.
Please read and understand the manual supplied with
this equipment. This equipment must be installed, adjusted and put into operation only by a qualifi ed individual or
service agency that is:
Licensed or certifi ed to install and provide technical
•
service to oil heating systems.
Experienced with all applicable codes, standards and
•
ordinances.
Responsible for the correct installation and commis-
•
sion of this equipment.
Skilled in the adjustment of oil burners using combus-
•
tion test instruments.
The installation must strictly comply with all applicable
codes, authorities having jurisdiction and the latest revision of the National Fire Protection Association Standard
for the installation of Oil-burning Equipment, NFPA 31 (or
CSA B139 and B140 in Canada).
Regulation by these authorities take precedence over the
general instructions provided in this installation manual.
The following guidelines are provided for routine
maintenance.
Professional Service
Required
Chimney Vent Systems: Install the burner cover
4.
and repeat Steps 2 and 4 above. If CO2 increases (O2 decreases), remove the cover and adjust
the air setting so the CO2 (O2) with the cover
installed meets the requirements of Step 3.
Direct Vent Systems with outside air ducted to
5.
burner: Install the burner cover.
Start and stop the burner several times to ensure
6.
satisfactory operation. Test the primary control
and all other appliance safety controls to verify
that they function according to the manufacturer’s specifi cations.
Cover Installation
•
Install the four cover mounting thumb screws in
1.
the cover mounting plate.
Install the cover over the mounting plate while
2.
aligning the side slots with the installed cover
mounting screws.
Replace the oil supply line filter. The line filter car-
tridge must be replaced to avoid contamination of
the fuel pump and nozzle.
Inspect the oil supply system. All fittings should
be tight and leak-free. The supply lines should be
free of water, sludge and other restrictions.
Remove and clean the pump strainer if applica-
ble.
Replace the used nozzle with a new nozzle that
conforms to the appliance manufacturer’s specifications.
Clean and inspect the electrodes for damage, re-
placing any that are cracked or chipped.
Check electrode tip settings. Replace electrodes
if tips are rounded.
Inspect the igniter spring contacts.
Clean the cad cell lens surface, if necessary.
Page 10 RWB 6104 BNX R02
Page 11
Trained Service Technician’s Regular Maintenance
Make sure Low Firing Rate Baffle is in place if
required for the burner application. Omitting the
baffle can result in unacceptable burner combustion.
Inspect all gaskets. Replace any that are dam-
aged or would fail to seal adequately.
Clean the blower wheel, air inlet, air guide, reten-
tion head, throttle cup and throttle ring of any lint
or foreign material.
WARNING
!
If a window is punctured, signifi -
cantly scratched or removed from
the throttle cup, the burner performance could be impaired, resulting in safety
lockout, appliance soot-up, equipment damage,
hot gas puff-back and asphyxiation hazard.
Use a clean soft cloth and degreaser, on an an-
•
nual basis, to remove any build-up or dark stains
from the windows.
If damaged, replace the nozzle line assembly with
•
an assembly that has a windowed throttle cup.
Do Not Puncture, Scratch,
or Remove Flame Sighting Windows
Removing Nozzle Line for Service (Refer-
•
ence the Replacement Parts Diagram.)
WARNING
!
Correct Nozzle and Flow
Rate Required
Incorrect nozzles and fl ow rates
could result in impaired combustion, under-fi ring, over-fi ring, soot-
ing, puff-back of hot gases, smoke
and potential fi re or asphyxiation hazards.
Use only nozzles having the brand, fl ow rate (gph), spray
angle and pattern specifi ed by the appliance manufactur-
er or Beckett Residential Burner OEM Spec Guide, Part
#6711.
Follow the appliance manufacturer’s specifi cations for the
required pump outlet pressure for the nozzle, since this
affects the fl ow rate.
Nozzle manufacturers calibrate nozzle fl ow rates
•
at 100 psig.
This burner utilizes pressures higher than 100
•
psig, so the actual nozzle fl ow rate will be greater
than the gph stamped on the nozzle body . (Example: A 1.00 gph nozzle @ 140 psig = 1.18 gph)
For typical nozzle fl ow rates at various pressures see ac-
companying chart.
Use a clean soft cloth with a degreaser to
clean any accumulated soot or oil stains from
the throttle cup sight windows.
Check motor current. The amp draw should not
exceed the nameplate rating.
Check all wiring for secure connections or insula-
tion breaks.
Check the pump pressure and cutoff function.
Check primary control safety lockout timing.
Check ignition system for proper operation.
Inspect and clear the vent system and chimney of
any soot accumulation or other restriction.
Clean the appliance thoroughly according to the
manufacturer’s recommendations.
Check the burner performance. Refer to the sec-
tion “Set combustion with test instruments”.
It is good practice to keep a record of the service
performed and the combustion test results.
Before proceeding, turn off the main power switch
1.
to the burner.
Remove the burner cover by loosening the four
2.
thumb screws (two on each side of burner).
Disconnect the copper connector tube assembly
3.
from the nozzle line bulkhead fi tting.
Loosen the two screws securing the igniter re-
4.
taining clips and rotate both clips to release the
igniter baseplate. The igniter should pop up and
be supported by the prop spring.
Loosen the two screws securing the rear door.
5.
Swing the door to the right and down.
Loosen the splined nut.
6.
Remove the nozzle line electrode and head as-
7.
sembly from the burner by drawing it straight
back and out the rear door opening. The adjustment mechanism is still attached. Be careful not
to damage the electrodes or insulators while handling.
To replace the nozzle assembly, reverse the
8.
above procedure.
RWB 6104 BNX R02 Page 11
Page 12
Trained Service Technician’s Regular Maintenance
!
4.
Nozzle Installation •
Use a 5/8” open-end wrench to carefully remove
the existing nozzle.
CAUTION
!
Protect Nozzle from
Damage
A damaged nozzle could cause impaired com-
bustion, sooting, puffback of hot gases, smoke,
oil leakage and potential fi re or asphyxiation
5.
Inspect the nozzle adapter before installing the
new nozzle. If it is grooved or scratched on the
sealing surface, replace the nozzle line assembly. If the surface is damaged, oil could leak at
the nozzle to adapter joint, causing serious combustion problems.
hazards.
6.
Use care when handling, removing and installing oil
•
nozzles.
Carefully follow the guidelines provided in this sec-
•
tion.
Protect the nozzle orifi ce and strainer when in-
stalling. If the orifi ce gets dirt in it or is scratched,
the nozzle will not function properly.
7.
To install a new nozzle, place a 3/4” open-end
wrench on the nozzle adapter. Insert the nozzle
Perform the following steps when replacing a nozzle.
Remove the nozzle line assembly to gain access
1.
to the nozzle.
Use a 3/4” open-end wrench to hold the nozzle
2.
adapter. DO NOT attempt to remove or replace
the nozzle without securing the adapter, as nozzle alignment could be seriously affected.
Do not squeeze the electrodes when handling
3.
the nozzle line assembly. Excessive force could
change the electrode tip settings or damage the
ceramic electrode insulators.
into the adapter and secure fi nger tight. Finish
tightening with a 5/8” open-end wrench. Use care
to avoid bending the burner head support legs or
electrodes.
8.
Do not over-torque the nozzle when installing. This will cause deep grooves in the nozzle
adapter, preventing a seal when a new nozzle is
installed.
9.
Carefully check and realign the electrode tips after replacing a nozzle, ensuring the electrode settings comply with Figure 7.
10.
If the head was removed when replacing the nozzle, carefully reconnect the head to the nozzle
adapter. Make sure to align the key in the support
Nozzle Flow Rate by Size
leg with the keyway in the nozzle adapter and
to butt the head support to the nozzle adapter
Nozzle fl ow rate U. S. gallons per hour of No. 2 fuel oil when
pump pressure (psig) is:
Nozzle
size
(rated
at 100
psig)
0.40 0.45 0.47 0.49 0.53 0.56
0.50 0.56 0.59 0.61 0.66 0.71
0.60 0.67 0.71 0.74 0.79 0.85
0.65 0.73 0.77 0.80 0.86 0.92
0.75 0.84 0.89 0.92 0.99 1.06
0.85 0.95 1.01 1.04 1.13 1.20
0.90 1.01 1.07 1.10 1.19 1.27
1.00 1.12 1.18 1.23 1.32 1.41
1.10 1.23 1.30 1.35 1.46 1.56
1.20 1.34 1.42 1.47 1.59 1.70
1.25 1.39 1.48 1.53 1.65 1.77
1.35 1.51 1.60 1.65 1.79 -
1.50 1.68 1.77 1.84 - -
1.65 1.84 - - - -
1.75 -----
125
psi
140 psi
(factory
std.)
150
psi
175
psi
200
psi
Figure 6. – Electrode tip gap and spacing
shoulder, see Figure 8.
Check/Adjust Electrodes
•
Check the electrode tip settings, as shown in Fig-
ure 7. If necessary, adjust by loosening the electrode clamp screw (Figure 8) and slide/rotate the
electrodes as necessary. When the adjustment is
complete, securely tighten the clamp screw.
Note that if the throttle cup is moved be sure to re-
position it with no gap between the nozzle adapter
and hub.
5/32” GAP
1/4” above
nozzle center
SK9664
3/32” Nozzle-to-tip
Spacing
Page 12 RWB 6104 BNX R02
Page 13
Trained Service Technician’s Regular Maintenance
Retention Head
Head Support Legs
Electrode Tips
Electrode Clamp
Electrode Bracket
Electrode Insulator
Electrode Extension Rods
Nozzle Adapter
Nozzle
Stops in Retention Ring
Retention Ring
Throttle Ring
Throttle Cup
Nozzle Line
Bulkhead Fitting
SK9666A
Throttle Cup Hub
Figure 7. – Nozzle Line/Head/Air Tube Assembly
•
The cad cell sighting holes in the throttle cup and
(Low fi ring rate shown.)
Retention Head
Head Support Legs
Electrode Tips
Nozzle Adapter
Nozzle
Stops in Retention Ring
Retention Ring
Electrode Clamp
Electrode Bracket
Electrode Insulator
Throttle Cup
Throttle Ring
Throttle Cup Hub
Electrode Extension Rods
SK9666A
Bulkhead Fitting
Nozzle Line
SK9666A
Check Retention Head Alignment and
Cad Cell Sighting (Refer to Figure 8.)
the retention head must be aligned to allow the cad
cell to detect the fl ame. Make sure the stamped key
in the retention head collar lines up with the keyway
in the nozzle adapter when mounting the retention
head. Note that in specifi c applications, the reten-
tion head may not have a sighting hole.
If the zero calibration has not been set, perform the
following procedure:
Install the nozzle line, with the adjustment plate
1.
assembly attached, into the burner.
Install and tighten the rear door to hold the air
2.
adjustment plate assembly in position.
Slightly loosen the upper acorn nut, the splined
3.
nut, and the lower acorn nut.
Turn the air adjustment screw clockwise to adjust
4.
the plate with the pointer to the zero position.
Referring to Figure 8, slide the nozzle line as-
5.
sembly forward until the retention head engages
the fi xed stops in the retention ring at the end of
the air tube.
Tighten the upper acorn nut securely.
6.
The rear door must be kept tightly closed. The
7.
adjustment screw may now be turned to adjust
the head/air setting.
Check/Adjust “Zero” Calibration
•
On burners with factory-installed air tubes, the
zero calibration has been factory set. Make sure
the retention head (Figure 8) is securely against
the stops in the retention ring when the adjustment
plate pointer is at “0” (Figure 5).
Figure 8 – Retention Head/Throttle Cup Alignment
Turn the adjusting screw to a setting that is 1/2
8.
number lower than the proper set point as indicated in Table 1. Then turn the adjusting screw
counterclockwise to the proper setting.
Tighten the splined nut and lower acorn nut after
9.
the head/air setting has been adjusted.
*
RWB 6104 BNX R02 Page 13
Page 14
Blower Wheel Replacement
•
For installation or replacement of a blower wheel,
insure that there is a space between the blower
wheel and the motor face of 0.1 15”. Refer to Figure
9.
Figure 9. – Blower wheel assembly
SK9670
Page 14 RWB 6104 BNX R02
Page 15
Replacement Parts Diagram
For best performance specify genuine Beckett replacement parts
Replacement Parts List
Item Description Part No.
1 Air guide 101101U
2 Head/Air adjustment mechanism
assembly
3 Splined nut 3666
4 Coupling 2454
5 CleanCut Fuel Pump,
(Includes Mounting Screws ¼ -20 x
7/8” - Part # 4189)
6 Connector tube assembly, 11” 51127
7 Inlet air box 1010U
8 Inlet air louvers 1013U
9 Inlet Air Adapter, Outside air kit 1014U
10 Retention head assembly,
6 -slot *
11 Retention head assembly,
9 -slot *
12 Air tube combination,
(Includes Screws, air tube mount-
ing #8 x 3/8 - Part # 4396)
13 Heat Shield (per specifi cation) Specify
14 Nozzle Line Electrode and Head
Assembly, with window
15 Electrode insulator kit 51811U
16 Spring, igniter prop 32058U
51794U
2184404U
51785U
51815U
Specify
Specify
SK967101
Item Description Part No.
17 Igniter, electronic 51771U
18
Gasket, Igniter Kit
18a
18b
18c
18d
19 Low Fire Rate Baffl e (per specifi ca-
20 Primary control
21 PSC Motor,
22 Electrical box 5770
23 Blower wheel 2999U
24 Door, rear access 32119U
25 Cover, Burner 51812U
26 Mounting Plate, Burner Cover 32103U
27 Thumbscrews, Cover mounting 21899U
* For retention head assemblies that do NOT have a sight-
ing hole, contact Beckett’s customer service for appropriate part number.
Gasket, igniter baseplate
Gasket, wiring hinge
Gasket, igniter baseplate
hinge
Gasket, rear access door
tion)
R7184P Valve-on/Motor Delay
R7184P With Alarm Contacts
(Requires Mounting screws ¼ -20 x
7/8” - Part # 4189)
51942U
32229U
7457U
7458U
21805U
RWB 6104 BNX R02 Page 15
Page 16
Limited Warranty Information
WARRANTY
For Residential, Commercial and Specialty Burners
The R. W. BECKETT CORPORATION (“Beckett”) warrants to persons who purchase its Beckett burners from Beckett for resale or for
incorporation into a product for resale (“Customers”) that its equipment is free from defects in material and workmanship under normal use and
service for 60 months from the date of manufacture for Residential Burners and 18 months from the date of manufacture for Commercial and
Specialty Burners. Residential burner models include: AF, AFG, AFII, NX, SF, SR and SMG. Commercial burner models include: CF375,
CF500, CF800, CF1400, CF2300A, CF2500, CF3500A, CG10, CG15, CG25 and CG50. Specialty burner models include: ADC, ADCP, ARV,
SDC and SM. The provisions of this warranty are extended to individual major burner components as follows:
a) 60 months from date of manufacture for all Beckett-branded major components, except for 12 Vdc components.
b) 18 months from date of manufacture for all non-Beckett-branded major components and Beckett branded 12 Vdc components.
Note: Normal service items found to be defective upon receipt by the customer are covered by this warranty.
THIS WARRANTY DOES NOT EXTEND TO EQUIPMENT SUBJECTED TO MISUSE, NEGLECT, OR ACCIDENT: NOR DOES THIS WARRANTY APPLY
UNLESS THE PRODUCT COVERED BY IT IS PROPERLY INSTALLED BY A QUALIFIED, COMPETENT TECHNICIAN, WHO IS LICENSED WHERE
STATE AND LOCAL CODES REQUIRE, AND WHO IS EXPERIENCED IN MAKING SUCH INSTALLATIONS, IN ACCORDANCE WITH THE LATEST
EDITION OF NFPA NO. 31 OF THE NATIONAL FIRE PROTECTION ASSOCIATION, THE LATEST EDITION OF THE NATIONAL FUEL GAS CODE (NFPA
NO. 54) AND IN ACCORDANCE WITH ALL APPLICABLE LOCAL, STATE AND NATIONAL CODES HAVING JURISDICTIONAL AUTHORITY.
Equipment, which is defective in material or workmanship and within the warranty period, may be returned for credit as follows:
Beckett Burners, Beckett-branded major components and non-Beckett-branded major components that came as original equipment on a Beckett burner
or were sold as a replacement part by Beckett should be returned, freight prepaid, to Beckett’s home office. Credit will be issued to the customer unless
the returned equipment is determined by Beckett to be out of warranty or damaged by user, in which case the equipment will be scrapped.
Note: Beckett is not responsible for any labor cost for removal and replacement of equipment.
THIS WARRANTY IS LIMITED TO THE PRECISE TERMS SET FORTH ABOVE, AND PROVIDES EXCLUSIVE REMEDIES EXPRESSLY IN LIEU OF ALL OTHER
REMEDIES, AND IN PARTICULAR THERE SHALL BE EXCLUDED THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE. IN NO EVENT WILL BECKETT BE LIABLE FOR ANY INCIDENTAL OR CONSEQUENTIAL DAMAGE OF ANY NATURE.
authorizes any person to assume for Beckett any other liability or obligation in connection with the sale of this equipment, Beckett’s liability and Customer’s
exclusive remedy being limited to credit as set forth above.
Limited
Beckett neither assumes nor
R.W. BECKETT CORPORATION
P.O. Box 1289 Elyria, Ohio 44036
The Oilheat Manufacturers’ Association supports the use of low sulfur fuels as defi ned by ASTM D396, Grades No. 1 Low Sulfur
and No. 2 Low Sulfur, as the preferred heating fuel for the following reasons:
• Low sulfur fuels reduce deposits on heat exchanger surfaces, extending the service interval between cleanings.
• The reduced deposits increase the effi ciency of the appliance.
• Low sulfur fuels reduce particulate emissions.
• Low sulfur fuels reduce oxides of nitrogen emissions.
Form No. 61545 R72905
R.W. BECKETT CORPORATION
U.S.A.: P.O. Box 1289 · Elyria, Ohio 44036
www.beckettcorp.com
Canada: R.W. Beckett Canada, Ltd. · Unit #3, 430 Laird Road · Guelph, Ontario N1G 3X7
Form Number 6104 BNX R02
Printed in the U.S.A. Jan. 2007
Page 16 RWB 6104 BNX R02
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