Steam Boilers - Weil-McLain LGB Manual

3b
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Steam boiler piping for
LGB-4 through LGB-12
(single riser)
Minimum Recommended Pipe Sizes
Boiler
Riser Header Equalizer
Model
A H
Number
LGB-4 ––
4" 4"
LGB-8
LGB-9 ––
5" 5" 2½"
LGB-11
6" 6" 2½"
LGB-12
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Steam boiler piping for
LGB-13 through LGB-23
(riser each end)
Minimum Recommended Pipe Sizes
Boiler
Risers Header Equalizer
Model
A B H
Number
LGB-13 ––
4" 4" 6"
LGB-15
LGB-16 ––
5" 5" 6"
LGB-19
LGB-20 ––
6" 6" 8"
LGB-23
Piping — steam boilers
Pipe the header at least 24 inches above the boiler water line.
which the pump is operated by a receiver-mounted float switch. Level controls (
Install a blowdown valve in tapping
Models LGB-4 through LGB-12
Models LGB-13 through LGB-23
See
Figure 20
J
2"
J
4"
4"
4"
Improper piping systems and/or undersized piping can contribute to erratic
boiler operation and possible boiler damage. The piping must be installed
as illustrated, using the recommended minimum pipe sizes.
or
C1 C2
(see
Figures 11a and 11b
OR
186-17a
1
Reducing from header
to equalizer - alternate
piping methods.
DO NOT reduce the
header in the
horizontal piping.
Part Number 550-141-186/0914
-
)
Section 6