Burner Mounting Criteria - Webster JB Series Installation, Startup, Operation And Maintenance Manual

It is of vital importance that the burner be properly mounted to the boiler or appliance being fi red. 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
Use minimum
of four (4) 1/2"
studs with lugs.
A
- Opening
Minimum of six (6) holes for
boiler mtg. studs, 1/2" or larger
Figure E-1
Refractory Dimension
The burner must
be level
JB Manual
E. BURNER MOUNTING CRITERIA
Minimum 7 gauge
A
4"
Minimum 14 Gauge
This surface must be
sealed against the vessel.
Check vessel mounting
requirements
Tighten clamp bolts
uniformly - check after
fi ring for several hours
Pipe support required
Flange secured to fl oor
Figure E-2
Burner Mounting Instruction
2" Minimum
2" Minimum
See Note 3
A
o o
30 to 45 taper,
see note 4
Refractory OD is sized to fi t
vessel opening with 1/4" to
1/2" gap, Refractory must
extend 2" beyond tube
sheet for scotch boilers.
Refractory
Front Plate
Attachment to vessel varies with manu-
facturer (follow vessel manufacturers
recommendation.
The gas piping from the burner to the
train should have as few elbows as pos-
sible to reduce presure drop.
Page 19
Dimensions - Inches
MODEL DIM. A
JB1 7 5/8
JB2 9 5/8
JB3 11 5/8
Note: For JB burners equipped
with a low NOx cone, refer to ad-
dendum number 950064
Contact Webster for more detailed
refractory drawings
Fill voids be-
tween front plate
and vessel with
ceramic blanket
4" deep or as
defi ned by vessel
manufacturer.
If gap is over 3/16",
wrap burner nose
with high tempera-
ture ceramic insulat-
ing rope.
Fiberglas rope
gasket must be
coiled to cover
the full mounting
fl ange surface

Burner Mounting Criteria

DIM. B
10 3/4
12 3/4
14 3/4