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Part Number 550-141-186/0914
LGB
3ERIES'AS&IRED"OILER"OILER-ANUAL
Pipe the header at least 24 inches above the boiler water line.
7EIL-C,AINRECOMMENDSUSINGABOILERFEEDSYSTEMWITHTHEPUMPOPERATEDBYALEVELCON-
TROLLERONTHEBOILER7EIL-C,AINDOESNOTRECOMMENDUSINGACONDENSATERETURNSYSTEMON
which the pump is operated by a receiver-mounted float switch. Level controls (Section 6)
MUSTBEMOUNTEDONSAMESIDEOFBOILERASTHERETURNPIPINGANDEQUALIZER
Install a blowdown valve in tapping
C1 or C2 (see Figures 11a and 11bPAGESAND
SIZEDPER!3-%#ODE
Models LGB-4 through LGB-12USEvBLOWDOWNVALVE
Models LGB-13 through LGB-23USEvBLOWDOWNVALVE
See Figure 200AGEFORMULTIPLESTEAMBOILERPIPING
*4
Steam boiler piping for
LGB-4 through LGB-12
(single riser)
*3
Steam boiler piping for
LGB-13 through LGB-23
(riser each end)
3b
Piping — steam boilers
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.
Minimum Recommended Pipe Sizes
Boiler
Model
Number
Riser
A
Header
H
Equalizer
J
LGB-4 ––
LGB-8
4” 4” 2”
LGB-9 ––
LGB-11
5” 5” 2½”
LGB-12
6” 6” 2½”
Minimum Recommended Pipe Sizes
Boiler
Model
Number
Risers
A B
Header
H
Equalizer
J
LGB-13 ––
LGB-15
4” 4” 6” 4”
LGB-16 ––
LGB-19
5” 5” 6” 4”
LGB-20 ––
LGB-23
6” 6” 8” 4”
OR
Reducing from header
to equalizer - alternate
piping methods.
DO NOT reduce the
header in the
horizontal piping.
1
186-17a
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