Webster JB Series Installation, Startup, Operation And Maintenance Manual page 7

Model JB1 - Dimentional Data
(Dimensions are +/- 1/4 inch)
9 1/2
21 7/8
Standard Arrangement
End View
19 3/8
Standard Arrangement
W/ Optional Back Mount Control Cabinet
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
specifi c requirements of IRI, FM, GE GAP, NFPA, MIL spec. or other special insurance or local code requirements.
JB Manual
24
5 5/16
10
11 7/16
36 15/16
Elevation
(400 - 2500 MBH Input)
26 5/8
15
18 3/8
15 11/16
Standard Arrangement
4
4
7 1/4 O.D.
Page 7
4
8 1/4
Elevation
36 15/16
14 3/8
Inverted Arrangement
Elevation
(Optional)
18 3/8
11 3/8
Specifi cation