Product Information - Viessmann Vitopend 100-W Installation And Service Instructions Manual

Product information

Vitopend 100-W, WH1D
Set up for operation with natural gas E.
May be converted to alternative gas types with a conversion kit.
The Vitopend 100-W should generally only be delivered to those countries specified
on the type plate. For deliveries to alternative countries, an approved contractor must
arrange individual approval on his own initiative and in accordance with the law of
the country in question.
Preparing for installation
Cold water installation
A Cold water connection, boiler
B Drain
C Visible discharge pipe outlet point
D Safety valve
E Non-return valve
Anti-water hammer device
We recommend the installation of an
anti-water hammer device near pressure
shock generators if the pipework to
which the boiler is connected comprises
taps where water hammer may be cre-
ated (e.g. pressure washers, washing
machines or dishwashers).
Preparing for installation
F Shut-off valve
G Cold water
H Safety assembly
Safety assembly H to DIN 1988 is
required, if the mains water supply pres-
sure exceeds 10 bar, and no DHW pres-
sure reducing valve is installed (to
DIN 4753).
Only use a non-return valve or a com-
bined shut-off and non-return valve in
conjunction with a safety valve.
If a safety valve is installed, remove the
toggle from the cold water shut-off valve
of the boiler, preventing the valve being
closed manually.
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