12
PN 240013666 REV. A [06/30/2022]
Table 3 - HYDRONIC PIPE SIZING GUIDE
COMBINED
BOILER
INPUT
(MBTUH)
(Fig. 4 & Fig. 6 ONLY)
MINIMUM PIPE SIZE (NPT)
(S), (R)
HEADER (B)
525
1-1/4"
2"
600
790
900
1-1/4"
2-1/2"
1-1/4"
2-1/2"
1-1/4"
3"
1,050
1,200
1-1/4"
3"
1-1/4"
3"
Typical Layouts for Hot Water Heating Systems
