LGB
LGB
LGB
LGB
LGB
Gas-Fired Boiler — Boiler Manual
Part Number 550-141-186/0703
34
12
Dimensions
Boiler
Model
Number
Supply
Tappings
Return
Tappings
Dimensions in Inches
No. of
Gas
Trains
Gas Connection Size
Natural and Propane (Note 1)
Draft Hood
Outlet(s)
No.
Size
No.
Size
A
B
C
W
5" w.c.
Natural
7" w.c. Natural
11"-13" Propane
No.
Size
LGB-4
2
6"
2
5"
18
9
--
21
1
(1) 1"
(1) 1"
1
10"
LGB-5
2
6"
2
5"
23
11
1
/
2
--
26
1
(1) 1"
(1) 1"
1
12"
LGB-6
2
6"
2
5"
28
14
--
31
1
(1) 1
1
/
4
"
(1) 1"
1
12"
LGB-7
2
6"
2
5"
33
16
1
/
2
--
36
1
(1) 1
1
/
4
"
(1) 1"
1
12"
LGB-8
2
6"
2
5"
38
19
--
41
1
(1) 1
1
/
4
"
(1) 1"
1
14"
LGB-9
2
6"
2
5"
43
21
1
/
2
--
46
1
(1) 1
1
/
4
"
(1) 1"
1
14"
LGB-10
2
6"
2
5"
48
24
--
51
1
(1) 1
1
/
2
"
(1) 1
1
/
4
"
1
16"
LGB-11
2
6"
2
5"
53
26
1
/
2
--
56
1
(1) 1
1
/
2
"
(1) 1
1
/
4
"
1
16"
LGB-12
2
6"
2
5"
58
29
--
61
1
(1) 1
1
/
2
"
(1) 1
1
/
4
"
1
16"
LGB-13
2
6"
2
5"
63
16
1
/
2
30
66
2
(2) 1
1
/
4
"
(2) 1"
2
12"
LGB-14
2
6"
2
5"
68
19
32
1
/
2
71
2
(2) 1
1
/
4
"
(2) 1"
1
12"
2
6"
2
5"
1
14"
LGB-15
2
6"
2
5"
73
19
35
76
2
(2) 1
1
/
4
"
(2) 1"
2
14"
LGB-16
2
6"
2
5"
78
21
1
/
2
37
1
/
2
81
2
(2) 1
1
/
4
"
(2) 1"
2
14"
LGB-17
2
6"
2
5"
83
21
1
/
2
40
86
2
(2) 1
1
/
4
"
(2) 1"
2
14"
LGB-18
2
6"
2
5"
88
24
42
1
/
2
91
2
(1) 1
1
/
4
"
(1) 1"
1
14"
2
6"
2
5"
(1) 1
1
/
2
"
(1) 1
1
/
4
"
1
16"
LGB-19
2
6"
2
5"
93
24
45
96
2
(2) 1
1
/
2
"
(2) 1
1
/
4
"
2
16"
LGB-20
2
6"
2
5"
98
26
1
/
2
47
1
/
2
101
2
(2) 1
1
/
2
"
(2) 1
1
/
4
"
2
16"
LGB-21
2
6"
2
5"
103
26
1
/
2
50
106
2
(2) 1
1
/
2
"
(2) 1
1
/
4
"
2
16"
LGB-22
2
6"
2
5"
108
29
52
1
/
2
111
2
(2) 1
1
/
2
"
(2) 1
1
/
4
"
2
16"
LGB-23
2
6"
2
5"
113
29
55
116
2
(2) 1
1
/
2
"
(2) 1
1
/
4
"
2
16"
Note 1
: Gas train sizes shown are gas connection sizes. Gas piping from meter to boiler to be sized according to local utility requirements.