Heizen mit Naturwaerme 02-2011_GB.indd - Viessmann

Dual mode systems
Dual mode heating systems: saving twice is better still
Oil and gas prices continue to rise. So what should you do if you have purchased an
advanced oil or gas boiler in the past few years? Simple – save a great deal with a dual
mode heating system, and at the same time reduce emissions.
A heat pump is the ideal way to extend the
heat supply of an existing oil or gas heating
system. Consumption costs are lowered
through the use of free energy from the
environment, causing a simultaneously
reduction in dependence on fossil fuel.
However, a dual mode heating system has
even more benefits:
n Oil storage space and amount of oil to be
stored can be reduced
n The operating times of the existing system
are reduced so the service life is extended
n Power for heat pumps can be obtained at
special tariffs
n The existing DHW heating system can
continue to be used
Little effort, great effect
You only need:
n Three-phase power supply with 400 V
n Installation area for heat pump and heating
water buffer cylinder, approx. 4 m2 n Radiator heating system < 65 °C
n Boiler thermostat setting max. 65 °C
n Options for drawing in outside and
exhaust air when installed inside
n Space to install the special heat pump
meter
n Power supply to the heat pump meter
Vitocal 300-A utilises the outdoor air heated by the sun – and
on cold days, a second heat source can be switched on
automatically by the heat pump control unit.