Connections Overview - Viessmann WB1A Series Installation And Service Instructions Manual

Preparing the Connections

Connections overview

VC
PRV
BD
PG
BWS
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This section constitutes an overview only! Refer to subsequent sections for
detailed information on individual piping connections.
NPT
NPT
NPT
BF
GC
BWR
Use an approved pipe sealant or teflon tape when
connecting the following installation fittings.
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
NPT National Pipe Thread
PG Pressure gage
VC Vent connection
Boiler Connections
13