Webster JB Series User guide

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COMBUSTION
A Se las Heat Technology Company
Webster Combustion Technology
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JB1-JB2-JB3
Gas -Oil -Gas/Oil
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© 2014 All Rights Reseed

SAFETY PRECAUTIONS
Page 2 Safety PrecautionsJB Manual
Good safety practices must be used when working on burner equipment. The potential energy in the electrical supply,
fuel and related equipment must be handled with extreme care to prevent equipment failures, injuries and potential
death.
Throughout this manual, the following symbols are used to identify potential problems.
WARNING
This indicates a potential hazardous situation, which if not avoided, could result in personal injury or death.
CAUTION
This indicates a potentially hazardous situation, which if not avoided, could result in damage to the equipment.
The following general safety precautions apply to all equipment work.
WARNING
IF YOU SMELL GAS, OPEN WINDOW, EXTINGUISH ANY OPEN FLAMES, STAY AWAY FROM ELECTRICAL
SWITCHES, EVACUATE THE BUILDING AND IMMEDIATELY CALL THE GAS COMPANY.
IN ACCORDANCE WITH OSHA STANDARDS, ALL EQUIPMENT, MACHINES AND PROCESSES SHALL BE
LOCKED OUT PRIOR TO SERVICING.
IF THIS EQUIPMENT IS NOT INSTALLED, OPERATED AND MAINTAINED IN ACCORDANCE WITH THE MAN-
UFACTURERS INSTRUCTIONS, THIS PRODUCT COULD EXPOSE YOU TO SUBSTANCES IN FUEL OR FROM
FUEL COMBUSTION WHICH CAN CAUSE DEATH OR SERIOUS ILLNESS AND WHICH ARE KNOWN TO THE
STATE OF CALIFORNIA TO CAUSE CANCER, BIRTH DEFECTS OR OTHER REPRODUCTIVE HARM.
IMPROPER SERVICING OF THIS EQUIPMENT MAY CREATE A POTENTIAL HAZARD TO EQUIPMENT AND
OPERATORS.
SERVICING MUST BE DONE BY A FULLY TRAINED AND QUALIFIED PERSONNEL.
BEFORE DISCONNECTING OR OPENING UP A FUEL LINE AND BEFORE CLEANING OR REPLACING
PARTS OF ANY KIND,
• TURN OFF THE MAIN MANUAL FUEL SHUTOFF VALVES INCLUDING THE PILOT COCK, IF
APPLICABLE. IF A MULTIPLE FUEL BURNER, SHUT OFF ALL FUELS.
• TURN OFF ALL ELECTRICAL DISCONNECTS TO THE BURNER AND ANY OTHER EQUIPMENT OR
SYSTEMS ELECTRICALLY INTERLOCKED WITH THE BURNER.
Service Organization Information:
Company Name
Address
Phone Number
Date of Startup
Lead Technician

Safety Precautions ...............................................................................................................................
A. Introduction ..........................................................................................................................................
Burner Model Number .............................................................................................................
JB1 Specifications ...................................................................................................................
JB2 Specifications ...................................................................................................................
JB3 Specifications ...................................................................................................................
B. Component ldentification ......................................................................................................................
C. Installation ............................................................................................................................................
D. Special lnstructions For Canadian lnstallations .....................................................................................
E. Burner Mounting Criteria ......................................................................................................................
F. Fuel Systems ........................................................................................................................................
G. Initial Settings .......................................................................................................................................
H. Ignition Systems .................................................................................................................................
I. Start-up & Operating Adjustments .......................................................................................................
J. TroubleShooting ..................................................................................................................................
K. General Maintenance and Care ...........................................................................................................
L. Care of The Burner During Extended Shutdown ..................................................................................
M. Replacement Parts ..............................................................................................................................
N. Warranty Validation & Field Start-up Report ........................................................................................
Start-Up Report .......................................................................................................................
2
3
5
6
8
10
12
17
18
19
20
28
30
32
42
45
48
48
48
49
TABLE OF CONTENTS
A. INTRODUCTION
Page 3 IntroductionJB Manual
This manual covers the Models JB1, JB2 and JB3 CYCLO-
NETIC burners offered by Webster Engineering & Manu-
facturing Co., LLC. These burners can be used in a wide
variety of Cast Iron, Firebox, Firetube, Flextube and other
applications. They can fire gas, oil and combination gas
and oil with several different operating systems.
READ AND SAVE THESE INSTRUCTIONS FOR REFER-
ENCE
WARNING
DO NOT ATTEMPT TO START, ADJUST OR MAIN-
TAIN THIS BURNER WITHOUT PROPER TRAINING
OR EXPERIENCE. FAILURE TO USE KNOWLEDGE-
ABLE TECHNICIANS CAN RESULT IN EQUIPMENT
DAMAGE, PERSONAL INJURY OR DEATH.
The startup and maintenance of the JB burner requires the
skills of an experienced and properly trained burner techni-
cian. Inexperienced individuals should not attempt to start
or adjust this burner.
Every attempt has been made to accurately reflect the
burner construction, however, product upgrades and spe-
cial order requirements may result in differences between
the content of this manual and the actual equipment.
These special components will be described in the infor-
mation provided with the burner and should be used as the
controlling document.
NOTE: This manual must be readily available to all op-
erators and maintained in legible condition.
1. Nameplate Information
Each burner has a nameplate with important job details,
similar to the nameplates shown in Figure A-1. An
“X” in the model number refers to a low NOx burner,
where FGR or a NOx cone is used to reduce the NOx
in the combustion gases. If the burner is not a low NOx
burner, there is no “X” in the model.
Figure A-1 Nameplate
MODEL NUMBER
JB2C-15-RM7840L-UL-IRI
SERIAL NUMBER
U81375A-018-06
OIL INPUT RATINGGAS INPUT RATING
MBTU/HR IN.WC GPH PSI
2940 2.8 21 300
MAXIMUM
1680 1.0 12 100
MINIMUM
NATURAL GAS #2 FUEL OIL
FUEL
VOLTS AMPS HERTZ PHASE HP
115
CONTROL CIRCUIT 5.0 60 1
208
BURNER MOTOR 5.9 60 3 1.5
208
OIL PUMP MOTOR 4.3 60 3 1/2
The serial number represents the unique number for that
burner and is a critical number that will be needed for any
communications with Webster Engineering.
The input rates define the maximum and minimum inputs
for that burner, given in MBH for gas and GPH for oil. Air
atomized burners show both the oil pressure and air pres-
sure. Pressure atomized burners only list the oil pres-

sure. For gas firing, the gas manifold pressure is given in
“in wc” which is inches of water column.
The electrical ratings of the burner are given, with the volt-
age, current load, frequency and phase (this will either be
single or 3-phase). For motors, the motor HP is listed.
2. Ratings
The ratings for each specific burner are given on the name-
plate. The general burner ratings are given in Specifica-
tion Sheets that follow this section. The maximum inputs
are given, based on the type of fuel. Other conditions, like
the supply gas pressure or the combination of fuels, emis-
sion requirements and control systems may prevent the
burner from reaching the lowest firing rate.
3. Product Offering
The JB burner can fire natural gas, propane and digester
gas as well as all grades of light and heavy oil (#2, #4, #5
and #6 oils as defined by ASTM D396).
DO NOT USE GASOLINE, CRANKCASE OIL OR ANY
OIL CONTAINING GASOLINE.
This burner is also available as a low emission burner, and
will have model designation JBX. Several low NOx rates
are available for all gas and light oil burners, with the stan-
dard offering of 60 ppm and 30 ppm when firing natural
gas. Heavy oil is not allowed in combination with low NOx,
as the high sulfur content can recirculate from the vessel
through the burner when switched from heavy oil to gas.
Low sulfur heavy oil can be used with gas FGR, when the
sulfur is under ½% (the FGR is closed during oil firing).
The burner can also be equipped with a NOx cone for low
NOx on gas, which does not require FGR. (See Adden-
dum 950064).
Figure A-2 lists the common variations and options avail-
able on this product. The minimum furnace conditions are
given in Section C.
4. Your Complete Manual
In addition to this manual, there are several other docu-
ments that should be considered as part of the complete
manual for the burner. All of these documents are needed
to support the installation and startup of the unit. These
additional items include:
a. The wiring diagram, which shows the limits and inter-
connection of the burner and vessel controls.
b. The gas and oil piping schematics, which show the
components and their relative positions in the piping train.
c. The unit material list which provides an overview of
the burner requirements and a complete bill of material,
including the part numbers and description for each item.
d. The flame safeguard manual provides the operating se-
quence for the burner management system. This will be a
critical document for troubleshooting any future problems.
Page 4 IntroductionJB Manual
e. Catalog cuts of the major components. These provide
details on the installation, adjustment and maintenance of
the components used on the burner.
5. Service, Parts and other Information
Service and parts are available from your local Webster
Representative. For a list of Webster Representatives,
please visit the Webster web site at:
www.webster-engineering.com or call 620-221-7464.

MODEL JB(X) BURNER MODEL CONFIGURATION
FIGURE A-2
JBX1G -05-RM7800L-M.25-M-A-UL/CSD-1
BURNER SERIES
JB JB SERIES
FGR or NOx CONE
USED X
NOT USED BLANK
HEAD SIZE (INCHES)
JB JBX
1 7 1/8 7 1/2
2 9 1/8 9 1/2
3 11 1/8 11 1/2
FUELS
G Gas
O Oil
C Gas / Oil
BLOWER MOTOR
HORSEPOWER
02 1/4
03 1/3
05 1/2
07 3/4
10 1
15 1 1/2
20 2
30 3
50 5
75 7 1/2
100 10
FLAME SAFEGUARD
VENDOR DESIGNATION
RM7800L Honeywell
M Mark AutoFlame - mini mark
E110/EP170 Fireye
Nexus Fireye
LMV51 Siemens
LMV52 Siemens
CODES AND
LISTINGS
UL
ULc
CSD-1
FM
IRI
NFPA-85
OIL SYSTEMS
Pressure Atomizing
A On - Off
L Low Fire Start
H Low - Hi - Low
MP Modulation Simplex
MR Modulation By-Pass
Air or Steam Atomization
MA Air Atomization
MS Steam Atomization
GAS TRAIN VENDOR
VGD Siemens
VGG Siemens
M Maxon
Blank All Others
(ASCO) - (std)
GAS TRAIN SIZE
.15 1 1/2 inches
.20 2 inches
.25 2 1/2 inches
.30 3 inches
.40 4 inches
GAS SYSTEM
A On-Off
L Low Fire Start
H Low-Hi-Low
M Modulation
The above represents the common model designations.
Contact the factory for other options and special applications.
Page 5 IdentificationJB Manual

(1) STANDARD UL EQUIPMENT
AND IMPORTANT OPTIONS
Fuel Burned
STANDARD UL EQUIPMENT
AND IMPORTANT OPTIONS
Fuel Burned
Gas
No. 2 Oil pressure
atomized
Gas
No. 2 Oil pressure
atomized
General
Motor, Fan and Air Inlet Control X X
Gas Fuel
Main Manual Shutoff Valve X
Air Flow Switch (also with oil sys-
tems using remote pump) X Main Safety Shutoff Valve X
(2) Burner Mounted Control Panel,
Switch and Indicator Lights X X Second Safety Shutoff Valve X
Flame Safety Control X X Main Gas Regulator X
Ultra Violet Scanner X X Gas Checking Valve X
Motor Controller (single phase
voltage) X X High and Low Gas Pressure Switches (st’d over 2500 MBH) Opt.
Fuel Selector Switch Duel Fuel Burners Only Metering Valve (modulation only) X
Ignition
Proven Gas Pilot Ignition X
Oil Fuel
Oil Drawer Assembly with Diffuser X
Pilot Solenoid Gas Valve X Oil Nozzle(s) X
Pilot Gas Regulator & Manual Valve X Integral Oil Pump X
Pilot Gas Ignition Transformer X Main Safety Shutoff Valve X
Direct Spark Oil Ignition X Second Safety Shutoff Valve X
Direct Spark Oil Ignition
Transformer XLow Oil Pressure Switch (STD when using remote oil pump) Opt.
Optional
Inverted Housing X X Oil Pressure Gauge X
Alternate Control Cabinet
Positioning X X Oil Metering Valve (modulating systems) X
Remote Control Panel X X Future Gas Combustion Head-OPT Opt.
Fuel Metering CAM-NETIC II X X
1. The configuration of each unit will vary with specific job requirements such as input rating, electrical specification and special agency approval
codes. The above chart shows those items standard to a basic burner plus a few options that may be added.
2. Indicator lights are “Power On”, “Call for Heat”, ”Fuel On” and ”Flame Fail” for hard wired panels. “Alarm”, “Low Water”, “Power”, “Call for
Heat”, “Ignition On”, and “Fuel On” for circuit board light panels.
Model JB1 - Sizing and Application Data (contact Webster for complete information)
Model
Number
Maximum
Furnace
Pressure
Burner Firing Capability
Range
Burner Motor HP Gas Train Oil Pump
Motor HP
Gas Only
HP
(3) Oil or
Combination
Pipe Size (4) Inlet Pressure
Gas scfh #2 Oil gph On-Off, LFS Modulation
JB1-02 1.25 400 / 1000 3.0 / 7.1 1/4 1/3 1” 6 / 14” 7 /14” Integral
JB1-03 1.25 600 / 1500 4.0 / 10.7 1/3 1/2 1 1/4” 8 / 14” 9 / 14” Integral
JB1-05 1.25 800 / 2100 6.0 / 14.8 1/2 1/2 1 1/2” 7 / 14” 8 / 14” Integral
JB1-07 1.25 900 / 2500 7.0 / 17.8 3/4 3/4 1 1/2” 9 / 14” 11 / 14” Integral
3. Larger motors may be required for single phase or 208 volts 4. Contact Webster for more complete details
The above maximum ratings are based on 0 furnace pressure, an altitude of 1000 feet, 90oF air temperature and 60 HZ electrical supply. Use
the following corrections for higher temperatures and altitude. Capacity decreases by 17% for 50 Hertz.
Capacity decreases by 4% for each 1000 feet above 1000 foot altitude.
Capacity decreases by 6% for each 1 inch of furnace pressure.
Capacity decreases by 2% for each 10oF increase in air temperature over 90oF.
Gas input ratings based on 1000 BTU/cu ft. and 0.64 specific gravity. Sizes and pressure will vary with gas.
Oil input ratings are based on 140,000 BTU/gal for ASTM #2 fuel oil.
Essential Ordering Information and Data:
Power Supply - Confirm 120-60-1 for control circuit and electrical supply for burner motor(s) (voltage, frequency and phase).
Describe Boiler or Heater to be Fired - Including the manufacturer, model number, furnace pressure and furnace size.
Firing Rate - Define firing rates in MBH for gas and GPH for oil.
Fuel to be Burned - Type of gas and/or oil, including the BTU value.
Approval Agency - UL, FM, IRI (GE GAP), CSD-1, NFPA, Mil spec and local codes, if applicable.
Flame Safety Control Preferred - Honeywell or Fireye controls.
Gas Train Components Preferred - ASCO/ITT, Honeywell or Landis
Control System - ON-OFF, Low Fire Start, Low-High-Low, Modulation, Posi-Control
Required Options - Mounting plate, limit controls, etc.
Model JB1 - Specification Data (400 - 2500 MBH Input)
Page 6 SpecificationJB Manual

Page 7 SpecificationJB Manual
Model JB1 - Dimentional Data (400 - 2500 MBH Input)
9 1/2 24 5 5/16
10
15
11 7/16
21 7/8
18 3/8
26 5/8 4
8 1/4
15 11/16
36 15/16 4
19 3/8 7 1/4 O.D.
36 15/16
414 3/8
11 3/8
18 3/8
Standard Arrangement
Elevation
Standard Arrangement
End View
Standard Arrangement
Elevation
W/ Optional Back Mount Control Cabinet
Inverted Arrangement
Elevation
(Optional)
Fuels Burned and Control Systems
- Natural Gas, Propane, Digester or Mixed Gases
- Light #2 Oil, Mechanical Pressure
- On-Off, Low Fire Start, Low-High-Low, Modulating or Micro Modulation
- Control Circuit Requires 120 vac, 60 Hz, Single Phase Voltage Supply
Model JB1 burners are listed by Underwriters Laboratories, Inc. (UL / ULC). Also by the State of Massachusetts
Fire Marshal, City of New York Board of Standards and Appeals, State of Minnesota and can be packaged to meet
specific requirements of IRI, FM, GE GAP, NFPA, MIL spec. or other special insurance or local code requirements.
(Dimensions are +/- 1/4 inch)

(1) STANDARD UL EQUIPMENT
AND IMPORTANT OPTIONS
Gas
No. 2 Oil
STANDARD UL EQUIPMENT
AND IMPORTANT OPTIONS
Gas
No. 2 Oil
Pressure
Atomized
Air
Atomized
Pressure
Atomized
Air
Atomized
General
Motor, Fan and Air Inlet Control X X X
Gas Fuel
Main Manual Shutoff Valve X
Air Flow Switch X X X Main Safety Shutoff Valve X
(2) Burner Mounted Control Panel,
Switch and Indicator Lights X X X Second Safety Shutoff Valve X
Main Gas Regulator X
Flame Safety Control X X X Gas Checking Valve X
Ultra Violet Scanner X X X High and Low Gas Pressure Switches X
Motor Controller (single phase voltage) X X X Metering Valve (modulating systems) X
Motor Starter w/Overloads (3 PH volt) X X X Normally Open Vent Valve Opt.
Fuel Selector Switch Duel Fuel Burners Only
Ignition
Proven Gas Pilot Ignition X X
Oil Fuel
Oil Drawer Assembly with Diffuser X X
JB2-30 and JB2-50 X X X Oil Nozzles X X
Pilot Solenoid Gas Valve X X Integral Oil Pump (JB2-07 to JB2-20) X
Pilot Gas Regulator & Manual Valve X X Remote Oil Pump (JB2-30 to JB2-50) X Opt.
Pilot Gas Ignition Transformer X X Two Safety Shutoff Valves X X
Direct Spark Oil Ignition (3) Low Air Atomizing Switch X
Direct Spark Oil Ignition
Transformer (3) Low Oil Pressure Switch (STD when using remote oil pump) X X
Options
Inverted Housing X X X Oil Pressure Gauge X X
Alternate Control Cabinet
Positioning X X X Oil Metering Valve (modulating system) X X
Remote Control Panel X X X Future Gas Combustion Head Opt. Opt.
Fuel Metering CAM-NETIC II X X X Air Compressor X
1. The configuration of each unit will vary with specific job requirements such as input rating, electrical specification and special agency approval codes.
The above chart shows those items standard to a basic burner plus a few options that may be added.
2. Indicator lights are “Power On”, “Call for Heat”, ”Fuel On” and ”Flame Fail” for hard wired panels. “Alarm”, “Low Water”, “Power”, “Call for Heat”, “Ignition
On”, and “Fuel On” for circuit board panels.
3. Maximum rate for direct spark is 20 GPH at low fire or 35 GPH at high fire. (standard on straight oil burners, pressure atomized)
Model JB2 - Sizing and Application Data (contact Webster for complete information)
Model
Number
Maximum
Furnace
Pressure
Burner Firing
Capability Range
Burner
Motor
HP
Gas Train Oil Pump Motor HP Air
Compressor
Motor HP
Pipe Size (3) Inlet Press (in wc) Pressure
Atomizing
Air
Atomizing
Gas scfh #2 Oil gph LFS, LHL Modulation
JB2-07 2 900 / 2800 10 / 20 3/4 1 1/2” 10 / 14” 13” Integral N/A N/A
JB2-10 2 900 / 3500 10 / 25 1 2” 8 / 14” 9 / 14” Integral Optional 2
JB2-15 2 900 / 3500 10 / 25 1 1/2 2” 8 / 14” 9 / 14” Integral Optional 2
JB2-20 2 1200 / 4200 12 / 30 2 2” (4) 12 / 14” (3) 13 / 14” Integral Optional 2
JB2-30 2.5 1200 / 5300 12 / 37.8 3 2 1/2” N/A 13 / 14” 3/4 Optional 2
JB2-50 2.5 1200 / 6000 12 / 42.8 5 2 1/2” N/A 2-5 psi 3/4 Optional 2
3. Lower pressures may apply to reduced inputs. 4. 11-14” with IRI and LFS or LHL. 12-14” with IRI and modulation.
The above maximum ratings are based on 0 furnace pressure, an altitude of 1000 feet, 90oF air temperature and 60 HZ electrical supply. Use the follow-
ing corrections for higher temperatures and altitude. Capacity decreases by 17% for 50 Hertz.
Capacity decreases by 4% for each 1000 feet above 1000 foot altitude.
Capacity decreases by 6% for each 1 inch of furnace pressure.
Capacity decreases by 2% for each 10oF increase in air temperature over 90oF.
Gas input ratings based on 1000 BTU/cu ft. and 0.64 specific gravity. Sizes and pressure will vary with different gas properties.
Oil input ratings are based on 140,000 BTU/gal. for ASTM #2 fuel oil.
The vessel draft must be between -0.1 and +0.1 wc.
Essential Ordering Information and Data:
Power Supply - Confirm 120-60-1 for control circuit and electrical supply for burner motor(s) (voltage, frequency and phase).
Describe Boiler or Heater to be Fired - Including the manufacturer, model number, furnace pressure and furnace size.
Firing Rate - Define firing rates in MBH for gas and GPH for oil.
Fuel to be Burned - Type of gas and/or oil, including the BTU value.
Approval Agency - UL, FM, IRI (GE GAP), CSD-1, NFPA, Mil spec and local codes, if applicable.
Flame Safety Control Preferred - Honeywell or Fireye controls. Gas Train Components Preferred - ASCO/ITT, Honeywell or Landis
Control System - ON-OFF, Low Fire Start, Low High Low, Modulation, Posi-Control. Required Options - Mounting plate, limit controls, etc.
Model JB2 - Specification Data (6000 MBH Maximum Input)
Page 8 SpecificationJB Manual

Page 9 SpecificationJB Manual
Model JB2 - Dimensional Data (6000 MBH Maximum Input)
6 1/2 24 5 5/16
10
15
17 3/4
30 11/16
19 1/16
28 5/8 4
9 1/2
19
39 1/4 4
19 1/2 9 1/8
O.D.
39 1/4
4
14
12 1/8
18 1/2
Standard Arrangement
Elevation
Standard Arrangement
End View
Standard Arrangement
Elevation
W/ Optional Back Mount Control Cabinet
Inverted Arrangement
Elevation
Fuels Burned and Control Systems
- Natural Gas, Propane, Digester or Mixed Gases
- Light #2 through Heavy #6 Fuel Oil
- Low Fire Start, Low-High-Low, Modulating or Micro Modulation
- Control Circuit Requires 120 vac, 60 Hz, Single Phase Voltage Supply
Model JB1 burners are listed by Underwriters Laboratories, Inc. (UL/ULC). Also by the State of Massachusetts Fire
Marshal, City of New York Board of Standards and Appeals, State of Minnesota and can be packaged to meet spe-
cific requirements of IRI, FM, GE GAP, NFPA, MIL spec. or other special insurance or local code requirements.
(Dimensions are +/- 1/4 inch)

(1) STANDARD UL
EQUIPMENT
AND IMPORTANT OPTIONS
Gas
No. 2 Oil
No. 4 - 6 Oil
Air Atomized
STANDARD UL EQUIPMENT
AND IMPORTANT OPTIONS
Gas
No. 2 Oil
N0. 4 - 6 Oil
Air Atomized
Pressure
Atomized
Air
Atomized
Pressure
Atomized
Air
Atomized
General
Motor, Fan and Air Inlet Control X X X X
Gas Fuel
Main Manual Shutoff Valve X
Air Flow Switch X X X X Main Safety Shutoff Valve X
(2) Burner Mounted Control Panel,
Switch and Four Indicator Lights X X X X Second Safety Shutoff Valve X
Main Gas Regulator X
Flame Safety Control X X X X Gas Checking Valve X
Ultra Violet Scanner X X X X High and Low Gas Pressure Switches X
Motor Starter with Overloads X X X X Metering Valve (modulating systems) X
Fuel Selector Switch Duel Fuel Burners Only Normal Open Vent Valve (above
12,500 MBH) X
Ignition
Proven Gas Pilot Ignition X X X
Oil Fuel
Oil Drawer Assembly with Diffuser X X X
Pilot Solenoid Gas Valve X X X Oil Nozzles X X X
Pilot Gas Regulator & Manual Valve X X X Oil Heater with Integral Thermostat X
Pilot Gas Ignition Transformer X X X Remote Oil Pump X Opt. Opt.
Two Safety Shutoff Valves X X X
High Oil Temperature Switch X
Low Air Atomizing Switch X
Options
Inverted Housing X X X X Low Oil Pressure Switch X X X
Alternate Control Cabinet Positioning X X X X Oil Pressure Gauge X X X
Remote Control Panel X X X X Oil Metering Valve X X X
Fuel Metering CAM-NETIC II X X X X Future Gas Combustion Head Opt. Opt. Opt.
Posi-Control X X X X Air Compressor X X
1. The configuration of each unit will vary with specific job requirements such as input rating, electrical specification and special agency approval codes.
The above chart shows those items standard to a basic burner plus a few options that may be added.
2. Indicator lights are “Power On”, “Call for Heat”, ”Fuel On” and ”Flame Fail”.
Model JB3 - Sizing and Application Data (contact Webster for complete information)
Model
Number
Maximum
Furnace
Pressure
Burner Firing Capability Range Burner
Motor
HP
Gas Train #2 Oil Pump Motor HP #4 - 6
Pump
Motor HP
Air
Compressor
Motor HP
Pipe
Size
Inlet
Press
Pressure
Atomizing
Air
Atomizing
Gas scfh #2 Oil
gph
#4-6
Oil gph
JB3-30 3.5 1400 / 6300 10.2 / 45 10 / 42 3 2 1/2” 12 / 27” 1 Optional Optional 2
JB3-50 3.5 1400 / 8300 11 / 59.2 10 / 55.3 5 3” 15 / 27” 1 1/2 Optional Optional 2
JB3-75 3.5 1600 / 10500 12.3 / 75 11 / 70 7 1/2 3” 23 / 27” 1 Optional Optional 2
JB3-100 3.5 1800 / 12600 20.3 / 90 12 / 84 10 3” 2-5 psi 1 Optional Optional 2
The above maximum ratings are based on 0 furnace pressure, an altitude of 1000 feet, 90oF air temperature and 60 HZ electrical supply. Use the follow-
ing corrections for higher temperatures and altitude. Capacity by 17% for 50 Hertz.
Capacity decreases by 4% for each 1000 feet above 1000 foot altitude.
Capacity decreases by 6% for each 1 inch of furnace pressure.
Capacity decreases by 2% for each 10oF increase in air temperature over 90oF.
Gas input ratings based on 1000 BTU/cu ft. and 0.64 specific gravity. Sizes and pressure will vary with gas.
Oil input ratings are based on 140,000 BTU/gal. for ASTM #2 fuel oil and 150,000 BTU/gal for ASTM #4-6 fuel oil.
The vessel draft must be between -0.1 and +0.1 wc.
Essential Ordering Information and Data:
Power Supply - Confirm 120-60-1 for control circuit and electrical supply for burner motor(s) (voltage, frequency and phase).
Describe Boiler or Heater to be Fired - Including the manufacturer, model number, furnace pressure and furnace size.
Firing Rate - Define firing rates in MBH for gas and GPH for oil.
Fuel to be Burned - Type of gas and/or oil, including the BTU value.
Approval Agency - UL, FM, IRI (GE GAP), CSD-1, NFPA, Mil spec and local codes, if applicable.
Flame Safety Control Preferred - Honeywell or Fireye controls.
Gas Train Components Preferred - ASCO/ITT, Honeywell or Landis
Control System - ON-OFF, Low Fire Start, Low High Low, Modulation, Posi-Control
Required Options - Mounting plate, operating controls, limit controls, etc.
Model JB3 - Specification Data (12,600 MBH Maximum Input)
Page 10 SpecificationJB Manual

Page 11 SpecificationJB Manual
Model JB3 - Dimensional Data (12,600 MBH Maximum Input)
6 1/2 24 5 5/16
10
15
16
27
19 15/16
38 1/4 4
15 15/16
22 1/2
Standard Arrangement
Elevation
Standard Arrangement
End View
48 4
22 1/2
11 1/4
O.D.
48
4
19 1/4
14 3/4
19 9/16
Standard Arrangement
Elevation
W/ Optional Back Mount Control Cabinet
Inverted Arrangement
Elevation
Fuels Burned and Control Systems
- Natural Gas, Propane, Digester or Mixed Gases
- Light #2 through Heavy #6 Fuel Oil
- Modulating Control System - Micro Modulation or Linkage
- Control Circuit Requires 120 vac, 60 Hz, Single Phase Voltage Supply
Model JB3 burners are listed by Underwriters Laboratories, Inc. (UL/ULC). Also by the State of Massachusetts Fire
Marshal, City of New York Board of Standards and Appeals, State of Minnesota and can be packaged to meet spe-
cific requirements of IRI, FM, GE GAP, NFPA, MIL spec. or other special insurance or local code requirements.
(Dimensions are +/- 1/4 inch)

B. COMPONENT IDENTIFICATION
Page 12 IdentificationJB Manual
Control Cabinet
Mod Motor
Blower Motor
Drawer Assembly
Light & Switch Panel
Oil Valve
Linkage
Oil Pressure Switch
Louver Box
Control Transformer
Oil Pressure Gauge
Figure B-1
JB2 Burner
Oil Fuel Sight Glass
Gas Valve
This secion shows the different common components used in the JB burner line and should be helpful to identify parts
described elsewhere in this manual.
Figure B-3
JB1G Right Side View
Air Flow Switch
Pilot Gas Regulator
Gas Actuator
Gas Pressure Gauge
High Gas
Pressure Switch
Ignition
Transformer
Figure B-2
JB1G Left Side View
Pilot Solenoid
Pilot Gas Regulator
Gas Actuator
Gas Valve
Manual Ball Valve
Combustion
Head

Panel Wiring
Terminal Strip
Switch / Light
Panel
Combination Flame
SafeGuard Base
and Circuit Board
Field Wiring
Terminal Strips
Board to Light
Panel Cable
Light Panel
Circuit Board Flame SafeGuard
Base
Board to Light
Panel Cable
Figure B-4
Control Panel
Circuit Board
Design
Electrical Panel Identification: The above pictures show the flame safeguard base mounted on a circuit board. Connections are wired via cable to
light / switch circuit board. Picture below shows the flame safeguard (base) mounted directly to the panel back plate.
Terminal Strip
Control Transformer
Transformer Fuses
Flame Safeguard
Burner Motor
Starter
Control Relays
Switch / Light Panel
Figure B-5
Control Panel
Hard Wired
Design
Page 13 IdentificationJB Manual
Electric Motor
Belt Guard
Air Chamber
Air Discharge
Connection
Compressor
Air Filter
Pressure
Gauge
Figure B-6
Air Compressor

Page 14 IdentificationJB Manual
Figure B-8
JB Combustion Head - Dual Fuel
Choke Cone
JB1 & JB2 Only
Primary Gas Orifices
(Behind Retention Plate)
Diffuser Assembly
Retention Plate
Oil Nozzle(s)
Gas Pilot
Secondary Gas Orifices
Blower Motor
Drawer Assembly
Air Inlet
Louver Box
Supply Oil
Press. Gauge
Jack Shaft
Oil Cam
Figure B-7
JB Burner
#4 - 6 Fuel Oil
Electrical Junction Box
High Oil Temp.
Switch
Low Atomizing
Air Press. Sw.
Atomizing Air
Bleed Muffler
Atomizing Air
Press. Gauge
Trim Heater
Safety Relief
Valve
Oil Supply To
Nozzle
Nozzle Oil
Press. Gauge
Low Oil Press.
Switch
Safety Oil
Valves
Oil Temp.
Gauge
N.O. Return
Oil Valve
Thermostat Control
Switch & Cold Oil
Interlock Switch
Drawer Assm.
Pre-heat Oil
Lines
Oil Metering
Valve
Atomizing Line
to Nozzle
Trim Heater
Air Bleed Valve

Figure B-10
JB3 Combination or Straight Oil Drawer Assembly
with Proven Gas Pilot
Oil Nozzle(s)
Diffuser
Gas Pilot
Pilot Gas
Supply Line
To Oil System
Return
Back Mounting
Plate w/View Port
Oil Supply Line
(lower pipe)
Pilot Gas Supply Ignition Electrode
Oil Nozzle(s)
Adapter
Diffuser Mounting Bracket
Oil Return Line
Oil Supply Line
Figure B-11
JB1 & 2 Combination Drawer Assembly
with Proven Gas Pilot Ignition
Oil Nozzle(s)
Adapter
Diffuser
Pilot Gas Inlet
View Port
Oil Supply Line
Backplate
Gas Pilot
Ignition Electrode
Pilot Gas Line
Oil Supply Line
Oil Nozzle(s)
Sight Tube
Page 15 IdentificationJB Manual
Figure B-9
Standard Head Arrangement
Section View
Drawer Assembly
Gas Manifold (inner cylinder)
Gas Inlet
Ignition Electrode
Pilot Assembly
This connection between the retention plate as-
sembly and the gas manifold inner cylinder must
be properly made for proper performance.
Primary Gas Orifice
Orifice Plate
Secondary Gas Orifices
Retention Plate
Assembly
Gas Manifold
Nose Choke Cone
Mounting Flange
Retention plate Assembly
Diffuser

Page 16 Identification JB Manual
Figure B-12
JB1 & 2 Straight #2 Oil Drawer Assembly
with Direct Spark Ignition
Diffuser
Oil Nozzle(s)
Adapter
View Port
Oil Supply Line
Back Plate
Oil Ignition Electrodes
Diffuser Clamp
Oil Supply Line
Oil Nozzle(s)
Sight Tube
Gas Orifice Part Number and Description
Part No. Description Sketch
Example
Vessel
090002 Gas orifice, 5/16” brass blank, no holes
090002-076 Gas orifice, 5/16” brass, (2) radial #48 holes, no axial hole (48 x 2) B FB
090002-098 Gas orifice, 5/16” brass, (2) radial #40 holes, no axial hole (40 x 2) B FB
090054-xxx Gas orifice, 5/16” brass, no radial holes, (1) axial hole (xxx = hole dia.) E FB, SF
090055-xxx Gas orifice, 5/16” steel, no radial holes, (1) axial hole (xxx = hole dia.) E
090069-xxx Gas orifice, 5/16” brass, (4) #40 radial holes, (1) axial hole (xxx = hole dia.) (40 x 4 x __ ) A FB, SF
090184-xxx Gas orifice, 5/16” steel, (4) #40 radial holes, (1) axial hole (xxx = hole dia.) (40 x 4 x __ ) A
090185-000 Gas orifice, 5/16” steel blank, no radial or axial holes
090185-098 Gas orifice, 5/16” steel, (2) radial #40 holes, no axial hole (40 x 2) B
090227-xxx Gas orifice, 5/16” brass, (4) #48 radial holes, (1) axial hole (xxx = hole dia.) (48 x 4 x __ ) A
090284-xxx Gas orifice, 1/4” steel, no radial holes, (1) axial hole (xxx = hole dia.) E
090287 Orifice extention, 5/16” OD steel tube, 1.188” long D
090288 Orifice extention, 5/16” OD steel tube, 2.75” long D
090318 Orifice extention, 5/16” OD brass tube, 1.188” long D SF
090319 Orifice extention, 5/16” OD brass tube, 2.75” long D
OT (open tube) No orifice used (If no orifice part number given in BOM, asume OP)
Note: 1. Part numbers ending in “-xxx” use the drilled hole diameter as the last three digits, or
the “-xxx”. A number 40 drill would be “-098”.
2. Part numbers ending in “000” indicate no drilled hole.
3. Sketches show general appearance only, not number or type of holes.
4. Secondary orifices are closest to the burner center. primary orifices are on the outside.
FB = Firebox
SF = Scotch Firetube
If the radial drill size is a # 40 drill, this
would be called a “40 by 4” orifice,
which is common in the JB burner line.
If the radial drill size is a # 40 drill, this
would be called a “40 by 2” orifice,
which is common in the JB burner line.
2 Radial Holes
2 Radial Holes, No Axial Holes
Orifice Example “B”
The threads run the full length
of the orifice. This orifice cannot
have radial holes.
Orifice Example “E”
No Radial Holes, 1 Axial Hole
1 Axial Hole
4 Radial Holes
4 Radial Holes, Axial Hole -xxx
Orifice Example “A”

Page 17 InstallationJB Manual
C. INSTALLATION
Prior to installing the burner, the site conditions and utili-
ties need to be evalulated. This section provides some
general questions that can help the review process. In-
spect the burner for any undetected damage that may
have occurred during shipment or by job-site handling.
Special attention should be given to the control panel
and protruding parts such as linkages. Check linkages,
air louver stops, wiring connections and fasteners for
tightness.
Verify that all ship loose (or separately shipped) items
are on hand. This normally will be: gas train components,
mounting lugs and insulating rope. Also, front mounting
plate and remote oil pump set, if supplied. The burner
material list included with the instruction manual serves
as a good checklist for this purpose.
1. Is there adequate outside ventilation to supply the
needed air for safe combustion as required by your local
regulatory agency?
2. If a burner mounting plate is required, is it available
and does it meet specifications? (See Section E)
3. Is 120-60-1 voltage available for the control circuit
and is the correct voltage available for the blower motor
as well for the remote oil pump set and air compressor,
if used?
4. Will the burner properly fit the boiler or heater with
ample clearance on top, bottom and sides?
5. If a gas burner, will there be adequate gas pressure to
assure the specified firing rate?
6. If a straight oil burner with gas pilot, is gas available at
the burner location?
7. If an oil burner, what is the age and condition of the
oil tank(s) and will there be special piping arrangements
needed to deliver the oil to the burner?
Important Note: The JB series burners must be oper-
ated with a two-pipe system.
8. If an oil burner, what grade of fuel oil is in the tank(s) or
on order? If a retrofit installation, has the same oil grade
always been used? Does it meet the grade specified on
the burner’s UL rating plate?
CAUTION
The oil burner shall only burn that grade of oil shown
on the UL rating plate. DO NOT USE GASOLINE,
CRANKCASE OIL, OR ANY OIL CONTAINING GAS-
OLINE OR TOXIC CONTAMINANTS.
9. Is there adequate flue provisions to assure SAFE and
proper venting of the burner?
10. All manuals should be reviewed and understood and
stored in a convenient place.
11. Teflon tape should not be used on any field piping.
12. Rope gaskets should be used between vessel and
mounting plate, and between mounting plate and burn-
er.
13. Gas piping should be flushed (cleaned) prior to use.
14. Check minimum straight lengths for gas pressure
regulator and/or sensing line.
15. Oil piping to be flushed (cleaned) prior to use.
16. Check pump suction pressure (max 10” Hg) or max
press (3 psig) if transfer pump is used or tank elevation is
higher than the pump.
17. Strainer before oil pump, sized for max pump suction
capacity.
18. If FGR is used, does it follow Webster guidelines. (see
addendum 950064)
19. If multiple vessels connect to a single stack, are they
sized and designed to maintain +/- 0.1” wc draft at the ves-
sel outlet under all operating conditions.
20. Is stack designed to maintain +/- 0.1” wc at outlet during
all operating conditions.
WARNING
DO NOT USE TEFLON TAPE OR COMPOUNDS
CONTAINING TEFLON. THIS COULD DAMAGE THE
VALVES CREATING AN UNSAFE OPERATION
21. Is the burner mounting plate and burner head sealed
with rope gasket? (See Figure E-2)
22. Has the new gas and oil piping been purged to remove
debris?
23. Is there a drop leg in the gas supply to capture foreign
material? (See Figure C-1)
24. Is the piping between the gas train and burner done in
a manner that will minimize the pressure drop?
25. Has all of the piping been pressure checked for leaks?
26. Is the combustion chamber of proper size and is the
center-line height of the burner head adequate? (See
charts C-2 & C-3.)

Page 18 Installation / Canadian InstallationsJB Manual
Drip Leg
Manual Gas
Shutoff Valve
Gas Pressure
Regulator
Low Gas
Pressure
Switch
Shutoff
Valve
Shutoff
Valve
High Gas
Pressure
Switch
Normally
open vent
valve
Leak Test
Valve
Pilot Gas
Pressure
Regulator
Pilot Solenoid
Valve
Pilot
Shutoff
Valve
Figure C-1
Typical Gas Piping
Gas Supply
Burner
If applicable, Webster
supplied gas train
D. SPECIAL INSTRUCTIONS FOR CANADIAN INSTALLATIONS
1. The installation of a burner shall be in accordance with
the regulations of the provincial installation requirements,
or in their absence, the following shall govern:
Gas Burners--CGAB149.1 and CGAB149.2
Oil Burners--CSA Standard B139
Authorities having jurisdiction should be consulted before
installations are made.
2. All electrical wiring shall be done in accordance with
Chart C-2 Chart C-3
FURNACE DIAMETER - INCHES
Width
Height - Floor to Center of Burner
Length
Length
Diameter
TYPICAL COMBUSTION CHAMBER SIZE
FOR FIREBOX BOILERS, WATERTUBE &
CAST IRON SECTIONAL TYPES
TYPICAL COMBUSTION CHAMBER SIZE
FOR SCOTCH MARINE FIRETUBE BOILERS
the Canadian Electrical Code, Part I.
3. The installer shall identify (label) the main electrical
power disconnect and the manual shut-off valve on the
gas and/or oil supply drop-line to the burner.
4. Oil and gas burning equipment shall be connected to
flues having sufficient draft at all times, to assure safe
and proper operation of the burner.

Page 19 Burner Mounting CriteriaJB Manual
E. BURNER MOUNTING CRITERIA
It is of vital importance that the burner be properly mounted to the boiler or appliance being fired. Improper mounting
can cause leakage of the hot gases back around the burner head resulting in warpage and deterioration. The following
illustrations show the proper way the burner must be installed to validate warranty conditions.
TYPICAL JB1, 2, 3 BURNER REFRACTORY FRONTPLATE
B- Bolt Circle
A- Opening
Minimum of six (6) holes for
boiler mtg. studs, 1/2” or larger
Minimum 7 gauge
Dimensions - Inches
MODEL DIM. A DIM. B
JB1 7 5/8 10 3/4
JB2 9 5/8 12 3/4
JB3 11 5/8 14 3/4
4”
30oto 45otaper,
see note 4
2” Minimum
2” Minimum
A
Minimum 14 Gauge
A
See Note 3
Use minimum
of four (4) 1/2”
studs with lugs.
Refractory OD is sized to fit
vessel opening with 1/4” to
1/2” gap, Refractory must
extend 2” beyond tube
sheet for scotch boilers.
Figure E-1
Refractory Dimension
Note: For JB burners equipped
with a low NOx cone, refer to ad-
dendum number 950064
Contact Webster for more detailed
refractory drawings
The burner must
be level
Pipe support required
Flange secured to floor
The gas piping from the burner to the
train should have as few elbows as pos-
sible to reduce presure drop.
Attachment to vessel varies with manu-
facturer (follow vessel manufacturers
recommendation.
If gap is over 3/16”,
wrap burner nose
with high tempera-
ture ceramic insulat-
ing rope.
Tighten clamp bolts
uniformly - check after
firing for several hours
Fiberglas rope
gasket must be
coiled to cover
the full mounting
flange surface
This surface must be
sealed against the vessel.
Check vessel mounting
requirements
Fill voids be-
tween front plate
and vessel with
ceramic blanket
4” deep or as
defined by vessel
manufacturer.
Refractory
Front Plate
Figure E-2
Burner Mounting Instruction

Page 20 Fuel SystemsJB Manual
F. FUEL SYSTEMS
The JB burner can be equipped with a wide range of fuel and operating systems to control the fuel, air, modulation
and pilots. This section describes how these systems operate. Burner start-up is expected to be done by service per-
sonnel who are qualified in the basics of mechanical know-how. The following illustrations and information is supplied
to identify the various fuel; air and ignition devices that have Adjustment Features. All adjustments can be done with
common place tools normally carried by burner and boiler service personnel.
NOTE
Refer to the bulletins included in the manufacturer’s data section of the burner instructions manual for items shown
below.
1. Pressure atomized oil systems
“A” - On - Off
Field Piped
Check Valve
Suction
Supply Line
Shutoff Valve
By Others
Strainer
Check
Valve
Gauge Port
Oil Pump
Adjustment
Return to Tank
(No Manual Valves
in this line)
Main Oil
Solenoid Valve
Oil Nozzle
Safety Oil
Solenoid Valve
By Others
Unless Specified on Order
Notes & Options
These Lines are Field
Piped if a Remote
Pump is Used
1
1
1
“L” - Low Fire Start or “H” - Low - Hi - Low
Shutoff Valve
Check
Valve
Field Piped
Strainer
By Others
Unless Specified on Order
Suction
Supply Line
Return to Tank
(No Manual Valves
in this line)
Check Valve
By Others
Main Oil
Solenoid
Valve
Oil Nozzle
Safety Oil
Solenoid Valve
Gauge Port
Oil Pump
Adjustment
1
1
2
High Fire Cylinder
Louver Actuator
Low Fire Bypass Regulator
(Adjustment for Low Fire
Approx. 100 - 125 PSI)
N.O. Low Fire
Bypass Oil Valve
Low Oil
Press. Sw.
2 or 3 1 (IN)
(out)
Notes & Options
These Lines are Field
Piped if a Remote Pump
is Used
Required Above 20 GPH
if a Remote Pump is Used
1
ININ
Field Piped
2