Buderus Logano plus GB312 Applications Manual page 30

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6.6.2 Four Boiler recommended Near Boiler Piping Size
"D"
Pump
PK
Four
GB312 System (18°F Delta T) Recommended Near Boiler Piping Size
Models GB312/90
Pipe A 3"
Pipe B 2½"
Pipe C 2"
Pipe D 1½"
Header E 3"
Four
GB312 System (36°F Delta T) Recommended Near Boiler Piping Size
Models GB312/90
Pipe A 2½"
Pipe B 2"
Pipe C 2"
Pipe D 1½"
Header E 2½"
See Sections 10.1 and 10.2, Tables 17 to 20 for Boiler pump (PK) and LLHeader (Hydro-Seperator) selections.
Technical specifi cations are subject to change without prior notice
"D"
"C"
Pump
PK
GB312/120 GB312/160
4" 4"
3" 4"
2½" 3"
2" 2½"
4" 4"
GB312/120 GB312/160
3" 3""
2½" 2½"
2" 2½"
1½" 2"
3" 3"
"C"
"B"
Pump
PK
Table 18
GB312/200 GB312/240 GB312/280
4" 5" 6"
4" 4" 4"
3" 4" 4"
2½" 3" 3"
4" 5" 6"
Table 19
GB312/200 GB312/240 GB312/280
4" 4" 4"
3" 3" 4"
2½" 2½" 3"
2" 2" 2½"
4" 4" 4"
GB312 Applications Manual
"A"
"B"
"A"
"E"
Pump
PK
Logano plus GB312 applications manual | 04.2008
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