Vaillant VRT 350, Руководство по эксплуатации, Страница: 32 / 36

11 Glossary
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Operating instructions VRT 350 0020135485_00
11 Glossary
11.1 Selection level
Using a selection level, you access the next level of the
menu structure or settings that you can change.
11.2 Mode
With the operating modes, you determine how the heating
installation is controlled, e.g. in automatic mode or manu-
ally.
11.3 Setting level
You can use the setting level to select and change values.
11.4 Fault message
A fault message shows you that the heating installation has
notified the controller of a fault.
11.5 Heating circuit
A heating circuit is a closed circulation system of pipes and
heat consumers (e.g. radiators). The heated water from the
boiler flows into the heating circuit and returns to the boiler
as cooled water.
11.6 Heating installation
The heating installation heats up the dwelling and produces
hot water. A heating installation usually has at least one
heating circuit.
11.7 Night temperature
The night temperature is the temperature to which the con-
troller reduces the room temperature outside the set time
periods (Night mode).
11.8 Room temperature
The room temperature is the temperature actually meas-
ured in the dwelling.
11.9 Day temperature
The day temperature is the desired «day» temperature to
which you wish to heat the dwelling (Comfort mode).
11.10 Level of protection
The level of protection indicates the suitability of electrical
equipment for various ambient conditions and additionally
the protection of people from potential hazards during their
use.
11.11 Protection class
Protection class denotes the classification and identifica-
tion of electrical equipment with reference to the existing
safety measures to prevent electric shocks.
11.12 Status message
A status message appears when you have activated an ad-
vanced function. It is shown for as long as the advanced
function is active.
11.13 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 ther-
mostatic radiator valve opens and the heating water flow
rate increases and the room temperature rises again.
11.14 Flow temperature
The heater heats water which is pumped through the heat-
ing installation. The flow temperature is the temperature of
the water introduced to the heating installation after heat-
ing.
11.15 Hot water generation
The boiler heats the water in the domestic hot water cylin-
der to the selected «Hot water circuit» target temperature.
If the temperature in the DHW cylinder falls by a specific
amount, the water is heated up again to the target «Hot
water circuit» temperature.