Vaillant atmoCRAFT VK SERIES Operating Manual page 7

3 Notes on the installation and operation
mode is achieved when all rooms in an apartment are
heated uniformly and in accordance to their usage.
The building structure can also suffer if components of
the building are unheated or only inadequately heated.
Thermostat valves and room thermostat
It should be a matter of course, today, that all radiators be
fitted with thermostatic valves. They exactly maintain the
set room temperature. You can adjust the room
temperature to suit your individual requirements and
ensure effective operation of your heating installation
using the thermostatic valves in combination with a room
temperature regulator (weather compensator).
In the room where the room temperature regulator is
located, all the radiator valves should be fully opened since
otherwise the two regulating systems will work against
each other and the regulation quality can be affected.
The following actions by the user are seen quite often:
As soon as the temperature in the room gets too hot,
the thermostatic valves are turned down (or the room
thermostat is set to a reduced temperature). If it gets
too cold again after a time, the thermostatic valve is
opened up again.
This is not necessary since the temperature regulation
system takes over this task via the thermostatic valve: If
the room temperature rises above the value set on the
sensor head, the thermostat valve shuts off
automatically, and when the temperature drops below
the defined value, it opens again.
Do not cover regulators
Do not cover your regulators with furniture, drapes or
similar objects. The room air must circulate unhindered.
Covered thermostat valves can be equipped with remote
sensors and thus still work.
Appropriate hot water temperature
The warm water should only be heated up to the extent
that is necessary for use. Any further heating results in
unnecessary power consumption and hot water
temperatures of more than 60 °C also lead to increased
lime scale production.
6
Energy-conscious use of water
Energy-conscious use of water can reduce your bills
considerably.
For example, taking a shower instead of a bath: whereas
about 150 litres of water are required for a bath, a
modern shower equipped with water saving fittings only
requires a third of this water quantity. Incidentally: a
dripping water tap wastes up to 2000 litres of water and
a leaking toilet flush up to 4000 litres of water each year.
On the other hand, a new seal only costs a few cents.
Run circulation pumps only if needed
Hot water piped systems are often fitted with so-called
circulation pumps. These provide continuous re-
circulation of hot water in the piping system so that hot
water is immediately available, even at drawing-off
points which are located far away.
These circulation pumps can also be used with the
Vaillant atmoCRAFT. There is no doubt that they provide
increased comfort for hot water heating. Please bear in
mind, however, that these pumps consume electricity.
And circulating hot water that is not used cools off when
passing through pipes and then needs to be reheated.
Therefore, circulation pumps are to be operated only
when hot water is actually needed for the household.
By using switch clocks, with which most circulation
pumps are equipped, individual time programmes can be
defined. Weather compensators often have ancillary
functions for controlling circulation pump timings.
Consult your heating engineer.
Ventilating residential spaces
During the heating period, open windows only for
ventilation and not for temperature regulation. A brief
impact-ventilation is more effective and energy-saving
than windows that are kept open for a long time. We
recommend that the windows be opened fully for a short
period. During ventilation, close all thermostatic valves
in the room or set the room regulator to minimum
temperature. In this way, there will be adequate
ventilation without unnecessary cooling and energy loss
(e.g. by the heating switching on during the ventilation
procedure).
Operating manual atmoCRAFT