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Preparing the Connections
Dimensions overview with connections
14" /
355mm
7
2
/
" / 73mm
8
6" /
152mm
PRV
BD
GC
PG
BWS
(continued)
This section constitutes an overview only! Refer to subsequent sections for
detailed information on individual piping connections.
15¾" /
400mm
VC
7
4
/
" /
8
123mm
7
4
/
" /
8
123mm
BF
BWR
2¼"
or
7
2
/
"
/
16
58mm
or
62 mm
Boiler Connections
Piping connections for Vitodens
100-W, WB1A 8-24 and 8-30 (factory
supplied)
Legend
BWR Boiler water return, ¾"
BWS Boiler water supply, ¾"
BD
Boiler drain
BF
Boiler fill
GC
Gas connection, ¾" NPTM
(male thread)
PRV
Pressure relief valve
PG
Pressure gage
VC
Venting connection
15
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