Weil-McLain NX User Manual
r
Oil Fired Water Boiler
Beckett Model NX Burner
Warning–Notice to Owner
!
Warning–To Professional
!
Installer or Service Provider
Please read and follow all instructions on Page 3 in this
manual regarding your responsibilities in caring for you
heating equipment
Contact a qualified service
agency for installation and
start-up. Incorrect Installation,
adjustment, or misuse of this
burner could result in severe
personal injury, death or
substantial property damage.
S119
WM 550-141-996/1105 Page 1
RWB 6104WMNX R1005
Please read and follow all instructions contained in this
manual before installing, starting or servicing this
heating system.
Incorrect Installation,
adjustment, or misuse of
this burner could result in
severe personal injury,
death or substantial
property damage.
S120
Table of Contents
Hazard Defi nitions and Owner’s Information ........................................................................................3
Information To Be Used Only By Qualifi ed Service Technicians
Weil McLain Burner Specifi cation ..............................................................................................................4
General Information .........................................................................................................................................5
Certifi cations/Approvals………………………………………………………….. ..................................................5
Notice Special Requirements ...........................................................................................................................6
Inspect/Prepare Installation Site .................................................................................................................7
Clearances to Burner and Appliance ...............................................................................................................7
Inspect Chimney or Direct Vent System .........................................................................................................7
Combustion Air Supply .....................................................................................................................................7
Safety Shutoff for Direct Vent System .............................................................................................................7
Direct/Sidewall Venting Application ................................................................................................................7
Fuel Line Installation .........................................................................................................................................8
Fuel Line Valves and Filters .............................................................................................................................8
System Wiring ..................................................................................................................................................8
Prepare the Burner ...........................................................................................................................................9
General .........................................................................................................................................................9
Mount Burner on Appliance .............................................................................................................................9
Connect Fuel Lines ...........................................................................................................................................9
Wiring Connection Diagram .............................................................................................................................9
Start the Burner and Set Combustion ....................................................................................................12
Start-up and Initial Settings ............................................................................................................................12
Set Combustion with Test Instruments .........................................................................................................13
Cover Installation ............................................................................................................................................13
Trained Service Technician’s Regular Maintenance .........................................................................14
Removing Nozzle Line for Service .................................................................................................................14
Nozzle Installation ...........................................................................................................................................15
Check/Adjust Electrodes ................................................................................................................................16
Check Retention Head Alignment and Cad Cell Sighting ............................................................................16
Check/Adjust “Zero” Calibration ...................................................................................................................16
Blower Wheel Replacement ...........................................................................................................................17
Replacement Parts Diagram .......................................................................................................................18
Replacement Parts Diagram ...........................................................................................................................18
Replacement Parts List ...................................................................................................................................19
Beckett Limited Warranty Information ...................................................................................................20
Page 2 WM 550-141-996/1105
RWB 6104WMNX R1005
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y
General Information
Hazard Defi nitions
Danger–Designation
!
Denotes presence of a hazard which, if ignored, will
result in death, severe personal injury, and/or
substantial property damage.
Death, personal Injury, and/or
substantial property damage
Warning–Designation
!
Denotes presence of a hazard which, if ignored,
could
result in death, severe personal injury, and/or
substantial property damage.
Death, personal Injury, and/or
substantial property damage
Caution–Designation
!
Denotes presence of a hazard which, if ignored,
could result in personal injury and/or property
damage.
Denotes presence of a hazard which,
if ignored, could result in personal
injury and/or property damage
NOTICE
Intended to bring special attention to infor-
mation, but not related to personal injury or
property damage.
S118
S103
S102
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.
Daily – Check the room in which your burner/appliance
is installed. Make sure:
Air ventilation openings are clean and unobstructed
•
Nothing is blocking burner inlet air openings
•
No combustible materials are stored near the heating
•
appliance
There are no signs of oil or water leaking around the
•
burner or appliance
Weekly
Check your oil tank level. Always keep your oil tank
•
full, especially during the summer, in order to prevent
condensation of moisture on the inside surface of the
tank.
!
Contact a professional, qualified service agency for the
installation, adjustment and service of your oil heating
system. This work requires technical training, trade
experience and the proper use of special combustion test
instruments.
Please carefully read and comply with the following
instructions:
Never store gasoline or combustible materials 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 use gasoline, crankcase, waste oil, o
other fuels not approved for use in this burner.
Never restrict the air inlet openings to the burner or the
combustion air ventilation o
Warning – Owner’s
Res
onsibilt
enings in the room.
Incorrect installation, adjustment, and
use of this burner could result in severe
personal injury death, or
substantial property
damage from fire, carbon
monoxide poisoning, soot
or explosion.
S101
WM 550-141-996/1105 Page 3
RWB 6104WMNX R1005
Weil-McLain Burner Specifi cations
NOTICE
The remainder of this manual contains Information to be used ONLY by a
qualifi ed Service Technician.
NX Burner Specifi cations for Weil-McLain Ultra Oil Boilers
Verify that burner specifi cation number (on burner carton) and confi guration agrees with information below.
Table 1. Burner Confi gurations
The table below provides burner specifi cations and starting air settings for NX burners applied to Weil-McLain Model
UO boilers. Follow all instructions in this burner manual, the boiler manual and the fuel pump literature to install, setup
and service the burner.
Boiler
Model
UO-3 CV WL5703
UO-3 CV WL5703 1.00 NX70LC 1-3/4” 0.75 X 60oB
UO-4 CV WL5704 1.20 NX90LB 3-1/2” 1.00 X 70oB
UO-5 CV WL5705 1.40 NX90LD 3-1/2” 1.10 X 70oB
UO-3 DV WL5803
UO-3 DV WL5803 1.00 NX70LC 1-3/4” 0.75 X 60oB
UO-4 DV WL5804 1.20 NX90LB 3-1/2” 1.00 X 70
UO-5 DV WL5805 1.40 NX90LD 3-1/2” 1.10 X 70
Burner
Spec
(See Note1)
(See Note1)
Firing
Rate
(GPH)
0.80 NX70LC 1-3/4” 0.65 X 60oA
0.80 NX70LC 1-3/4” 0.65 X 60oA
Air Tube
Combina-
tion
Inser-
tion
Primary
Nozzle
Delavan
Hago
Hago
Hago
Delavan
Hago
Hago
Hago
o
B
o
B
Alternate
Nozzle
0.65 X 70oB
Hago
0.75 X 60oB
Delavan
1.00 X 70oB
Delavan
1.10 X 70oB
Delavan
0.65 X 70oB
Hago
0.75 X 60oB
Delavan
1.00 X 70oB
Delavan
1.10 X 70oB
Delavan
Fuel
Pump
Pres-
sure
(psig)
150 1.75
175 2.50
140 4.00
160 1.50
150 1.75
175 2.50
140 4.00
160 1.50
Head/
Adjust-
ment
Plate
Setting
Air
1) Shipped as 1.0 GPH Burner Confi guration. The 0.80 GPH input uses same burner as 1.0 GPH input. Replace
nozzle, adjust pump pressure and Head/Air setting as shown above and install 14”x16” blanket on combustion
chamber fl oor. (See Maintenance Section for Nozzle Replacement details.)
Page 4 WM 550-141-996/1105
RWB 6104WMNX R1005
p
General Specifi cations
General Specifi cations
Table 2 – Burner Specifi cations
Capacity LB & LC
Firing rate 0.40 – 1.35 GPH
Input 56,000 – 189,000 Btu
LD & LF
Firing rate 1.10 - 1.75 GPH
Input 154,000 – 245,000 Btu/h
Fuels U. S No. 1 or No. 2 heating oil only
...........(ASTM D396)
Canada No. 1 stove oil or No. 2
.........furnace oil only
Electrical Power supply 120 volts AC, 60 Hz,
.............single 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
Fuel pump Outlet pressure ...... Note 1
Air tube ATC code .......See Table 3
Dimen-
sions
(with
cover)
Note 1. See appliance manufacturer’s burner specifi ca-
tions for recommended outlet pressure.
Height (maximum) 12-1/2 inches
Width (maximum) 15 inches
Depth ............ 9-1/4 inches
Air tube diameter 3-1/4 inches
!
Warning–Professional
Service Required
This equipment must be installed, adjusted and put into
operation only by a qualified individual or service agency
that is:
x Licensed or certified to install and provide technical
service to oil heating systems.
x Experienced with all applicable codes, standards and
ordinances
x Responsible for the correct installation and
commission of this equipment
x Skilled in the adjustment of oil burners using
combustion 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.
Read and understand the manual
supplied with this equipment. Incorrect
installation, adjustment, and use of
this burner may result in
severe personal injury
death, or substantial
property damage from
fire, carbon monoxide
poisoning, soot or
ex
losion.
S105
Table 3 – Air Tube Combination (ATC)
codes
Firing rate
(gph)
(min-max) 5” 7” 9”
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
Head ATC codes for usable air tube
lengths:
Certifi cations/approvals
•
Underwriters Laboratories has certifi ed this burner
to comply with ANSI/UL 296 and has listed it for
use with #1 or #2 fuel oil as specifi ed in ASTM
D396. Low sulfur #1 and #2 fuel oils reduce heat
exchanger deposits with all burners compared to
the standard fuels. Reduced deposits extend the
service interval for cleaning and improve the effi -
ciency of the appliance over time. Low sulfur fuels
reduce particulate and oxides of nitrogen emissions as well. The Oilheat Manufacturers’ Association recommends these fuels as the preferred fuels
for this burner.
WM 550-141-996/1105 Page 5
RWB 6104WMNX R1005
General Specifi cations
State and local approvals are shown on burner rat-
ing label mounted on the burner housing.
For recommended installation practice in Canada,
refer to the latest version of CSA Standard B139 &
B140.
Figure 1. Burner label location
Notice Special Requirements
•
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.
Page 6 WM 550-141-996/1105
RWB 6104WMNX R1005
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