NTI FTV150 - Minimum Pipe Sizes for Multiple Boiler Applications

Boiler and Heating System Piping │ FTV I&O Manual
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Table 13-1 Minimum Pipe Sizes for Multiple Boiler Applications
# of Units
FTV110
FTV150
FTV190
Pipe Size
2
1-1/4”
1-1/2”
2”
3
1-1/2”
2”
2”
4
2”
2”
2-1/2”
5
2”
2-1/2”
2-1/2”
6
2-1/2”
2-1/2”
3”
7
2-1/2”
3”
3”
8
2-1/2”
3”
3”
9
2-1/2”
3”
3”
10
3”
3”
4”
11
3”
3”
4”
12
3”
4”
4”
13
3”
4”
4”
14
3”
4”
4”
15
3”
4”
4”
16
3”
4”
4”
Note: Minimum pipe size based on assumed temperature rise of 25ºF at
maximum firing rate.