Viessmann Vitodens 100-W Specifications page 12

Vitodens 100-W
Viessmann 4-pipe system
Viessmann 4-pipe principle
Optional weather
compensation sensor
Viessmann Vitodens system boilers up to
35 kW installed together with a Vitocell 200
or 300 unvented cylinder are the perfect
combination to meet G3 building regulations
without the need for an energy cut-off valve and
cylinder overheat thermostat; these are now
built into the boiler.
Installation time will be reduced by up to 1 day
as the following are no longer required:
Energy cut off valve or safety valve
Expansion vessel and pump
Gauge and cylinder overheat thermostat
Part P certification
Compatibility with solar
As a manufacturer of the full range of renewable
energy technologies all Viessmann boilers are
100% compatible with solar thermal panels.
The Vitodens 100-W has the added advantage
of boiler suppression, when using Viessmann
solar panels and a dual coil cylinder. This
means that the hot water system will always
take advantage of solar power, whenever solar
energy is available and the boiler will only fire
to 'top up' the heating process when absolutely
necessary – resulting in significant fuel savings.