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Figure 3.2: LC/LCE Boiler Piping
PIPE THE BOILER
Table 3.1: Boiler Supply and Return Connections & Recommended Header Sizing
LC-04
LC-05R
LC-05
LC-06
LC-07
LC-08
LC-09
LC-10
LC-11
LC-12
LCE-13
LCE-14
LCE-15
LCE-16
LCE-17
LCE-18
LCE-19
LCE-20
LCE-21
LCE-22
LCE-23
LCE-24
Model
547
649
707
868
1029
1189
1350
1511
1672
1832
1966
2125
2284
2444
2603
2763
2922
3082
3256
3430
3604
3777
I=B=R
Gross
Output
MBH
55
65
71
87
103
119
135
151
167
183
197
213
228
244
260
276
292
308
326
343
360
378
GPM
@ 20°F
Rise
1
1
1
1
1
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
Suggested Supply
Connections – Top
Number
Size
(Inches)
Header
(Inches)
Number
Size
(Inches)
Header
(Inches)
2-1/2
2-1/2
2-1/2
3
3
3
3
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
2-1/2
2-1/2
2-1/2
3
3
3
3
4
4
4
4
4
4
4
5
5
5
5
5
5
5
5
1
1
1
1
1
2
2
2
2
2
2
2
2
2
2
2
2
2
3
3
3
3
Return Connections
Rear and Side
2-1/2
2-1/2
2-1/2
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
2-1/2
2-1/2
2-1/2
3
3
3
3
4
4
4
4
4
4
4
5
5
5
5
5
5
5
5