Preparing For Installation Connecting The Boiler To The Central Heating System - Viessmann Vitotron 100 Series Installation And Operating Instructions Manual

Connecting the boiler to the central heating system
Tos
Tos
The filter must be installed so that the flow direction of the
heating medium matches the arrow on the casing and
the cover is on the bottom of the filter. Filters can be
installed on horizontal and vertical lines. We recommend
installing shut-off valves immediately before and after the
filter to facilitate cleaning or replacement of the filter
element.
Tr
PI – Pressure gauge
ZK – Shut-off valve
RW – Expansion line
NW – Integral expansion vessel
NW1 – Expansion vessel
ZT – Thermostatic valve
ZP – Instantaneous water heater valve
F – Filter
G – Radiator
ZS – Drain valve
TWV – Three-way valve
ZAS – DHW cylinder
Tr – Room temperature sensor
Tcyl – Temperature sensor for DHW cylinder
(WE-019/01)
Tos – Outside temperature sensor (WE-027)
Tr
Tcyl
TWV
Preparing for installation
7