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Model JB2 - Specification Data
(1)
STANDARD UL EQUIPMENT
AND IMPORTANT OPTIONS
Motor, Fan and Air Inlet Control
Air Flow Switch
(2)
Burner Mounted Control Panel,
Switch and Indicator Lights
Flame Safety Control
Ultra Violet Scanner
Motor Controller (single phase voltage)
Motor Starter w/Overloads (3 PH volt)
Fuel Selector Switch
Proven Gas Pilot Ignition
JB2-30 and JB2-50
Pilot Solenoid Gas Valve
Pilot Gas Regulator & Manual Valve
Pilot Gas Ignition Transformer
Direct Spark Oil Ignition
Direct Spark Oil Ignition
Transformer
Inverted Housing
Alternate Control Cabinet
Positioning
Remote Control Panel
Fuel Metering CAM-NETIC II
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
Model
Maximum
Number
Furnace
Capability Range
Pressure
Gas scfh
JB2-07
2
900 / 2800
JB2-10
2
900 / 3500
JB2-15
2
900 / 3500
JB2-20
2
1200 / 4200
JB2-30
2.5
1200 / 5300
JB2-50
2.5
1200 / 6000
3. Lower pressures may apply to reduced inputs.
The above maximum ratings are based on 0 furnace pressure, an altitude of 1000 feet, 90 o F 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 10 o F increase in air temperature over 90 o F.
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.
Control System - ON-OFF, Low Fire Start, Low High Low, Modulation, Posi-Control.
JB Manual
No. 2 Oil
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Duel Fuel Burners Only
X
X
X
X
X
X
(3)
(3)
X
X
X
X
X
X
X
X
Burner Firing
Burner
Motor
HP
#2 Oil gph
10 / 20
3/4
10 / 25
1
10 / 25
1 1/2
12 / 30
2
12 / 37.8
3
12 / 42.8
5
(6000 MBH Maximum Input)
STANDARD UL EQUIPMENT
AND IMPORTANT OPTIONS
X
Main Manual Shutoff Valve
X
Main Safety Shutoff Valve
Second Safety Shutoff Valve
X
Main Gas Regulator
X
Gas Checking Valve
X
High and Low Gas Pressure Switches
X
Metering Valve (modulating systems)
X
Normally Open Vent Valve
X
Oil Drawer Assembly with Diffuser
X
Oil Nozzles
X
Integral Oil Pump (JB2-07 to JB2-20)
X
Remote Oil Pump (JB2-30 to JB2-50)
X
Two Safety Shutoff Valves
Low Air Atomizing Switch
Low Oil Pressure Switch (STD when
using remote oil pump)
X
Oil Pressure Gauge
Oil Metering Valve (modulating
X
system)
X
Future Gas Combustion Head
X
Air Compressor
(contact Webster for complete information)
Gas Train
Pipe Size
(3) Inlet Press (in wc)
LFS, LHL
Modulation
1 1/2"
10 / 14"
2"
8 / 14"
9 / 14"
2"
8 / 14"
9 / 14"
(4)
(3)
2"
12 / 14"
2 1/2"
N/A
13 / 14"
2 1/2"
N/A
2-5 psi
4. 11-14" with IRI and LFS or LHL. 12-14" with IRI and modulation.
Gas Train Components Preferred - ASCO/ITT, Honeywell or Landis
Required Options - Mounting plate, limit controls, etc.
Page 8
Opt.
Oil Pump Motor HP
Pressure
Air
Atomizing
Atomizing
13"
Integral
N/A
Integral
Optional
Integral
Optional
13 / 14"
Integral
Optional
3/4
Optional
3/4
Optional
No. 2 Oil
X
X
X
X
X
X
X
X
X
X
X
X
X
Opt.
X
X
X
X
X
X
X
X
X
Opt.
Opt.
X
Air
Compressor
Motor HP
N/A
2
2
2
2
2
Specification
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