Webster JB Series Installation, Startup, Operation And Maintenance Manual page 11

Model JB3 - Dimensional Data
(Dimensions are +/- 1/4 inch)
6 1/2
Standard Arrangement
22 1/2
Standard Arrangement
Elevation
W/ Optional Back Mount Control Cabinet
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-
cifi 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
16
27
End View
48
11 1/4
(12,600 MBH Maximum Input)
15
19 15/16
22 1/2
4
4
19 1/4
O.D.
Page 11
38 1/4
15 15/16
Standard Arrangement
Elevation
48
Inverted Arrangement
Elevation
4
19 9/16
14 3/4
Specifi cation