Vaillant VRC 470, Руководство по эксплуатации

Страница: 36 / 40

Glossary
36
Operating instructions VRC 470 0020116689_00
Selection level
Via a selection level, you access the next level of the
menu structure or settings that you can change.
Set-back temperature
The set-back temperature is the desired “Night” temper-
ature, to which the controller lowers the room tempera-
ture outside the set period (Night mode).
Solar yield
The heat energy obtained by a solar system in a defined
period (usually one year). This heat energy is used to
heat up the domestic hot water cylinder.
Status message
A status message appears when you have activated an
advanced function. It remains visible for as long as the
advanced function is active.
Target hot water temperature
The target hot water temperature is the desired “hot
water” temperature to which you wish to water in the
domestic hot water cylinder.
Target room temperature
The target room temperature is the desired “Day” tem-
perature to which you wish to heat the dwelling (Com-
fort mode).
Thermostatic radiator valve
Thermostatic radiator valves are mounted on radiators
and control the room temperature to the set value. If the
room temperature rises above the pre-set value, the
thermostatic radiator valve reduces the heating water
flow rate. If the room temperature falls below the pre-set
value, the thermostatic radiator valve opens and the
heating water flow rate increases and the room temper-
ature rises again.
Timer programme
If you operate the heating system in "Auto" mode, then
you activate periods during which the controller
switches the heating system on and heats the connected
rooms to the set desired "Day" temperature (Comfort
mode). Outside these periods, the controller switches
the heating system to night mode and allows the heated
rooms to cool down to the set desired "Night" tempera-
ture (Night mode). When the desired "Night" tempera-
ture is reached, the controller maintains the room tem-
perature prevents the heated rooms from cooling fur-
ther until the start of the next period.
With time programmes, you can also control the hot
water production and circulation in such a way that hot
water is available in the set periods with the set desired
"hot water" temperature.
Weather compensation
Automatic change to the hot water temperature depend-
ing on the outside temperature.
The outside temperature is measured by a separate sen-
sor which is mounted in the open air, and the results are
transmitted to the controller. At low outside tempera-
tures the controller provides an increased flow tempera-
ture; at higher outside temperatures the flow tempera-
ture is reduced.
11