Pipe Sizing - Buderus Logano plus GB312 Applications Manual
Gas condensing boiler
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Also See for Logano plus GB312:
- Installation manual (124 pages) ,
- Installation and service instructions manual (96 pages) ,
- Installation instructions manual (96 pages)
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GB312 Applications Manual
6.6 Pipe Sizing
"C"
Pump
PK
7KUHH
GB312 System (18°F Delta T) Recommended Near Boiler Piping Size
Models
GB312/90
Pipe A
2½"
Pipe B
2"
Pipe C
1½"
Header E
2½"
7KUHH
GB312 System (36°F Delta T) Recommended Near Boiler Piping Size
Models
GB312/90
Pipe A
2"
Pipe B
1½"
Pipe C
1¼"
Header E
2"
"C"
"B"
Pump
PK
GB312/120
GB312/160
GB312/200
3"
4"
4"
2½"
3"
3"
2"
2½"
2½"
3"
4"
4"
GB312/120
GB312/160
GB312/200
2½"
2½"
3"
2"
2"
2½"
1½"
1½"
2"
2½"
2½"
3"
"A"
"B"
"A"
Pump
PK
7DEOH
GB312/240
GB312/280
4"
4"
4"
4"
2½"
3"
4"
4"
7DEOH
GB312/240
GB312/280
3"
4"
2½"
3"
2"
2½"
3"
4"
_
System
Supply
System
Return
"E"
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