Vaillant VRT 350, Operating Instructions Manual, Page: 19 / 36

Operating and display functions 5
0020135485_00 VRT 350 Operating instructions
19
5 Operating and display functions
The controller offers various functions, operating modes
and advanced functions for controlling the heating installa-
tion.
–
With the functions, you can read information, and set
desired temperatures, periods and basic settings.
–
With the operating modes, you select whether the
heating installation should be operated in automatic or
manual mode.
–
With the advanced functions, you can change the active
operating mode for the heating circuit and hot water
generation in special situations quickly and with time
restrictions.
5.1 Information
You can set the functions using the left-hand selector but-
ton: «Menu».
Select the «Information» list entry in selection level 1 to
reach selection level 2 with the «System status», «Contact
details» and «Serial number» list entries.
The path details given at the start of each function descrip-
tion indicate how you reach this function in the menu struc-
ture.
The table "Overview of operating levels" and the overview
of the menu tree show you which functions are available for
Zone 2 via the auxiliary controller.
5.2 Settings
5.2.1 Setting desired temperatures
This function is used to set the desired temperatures for
«HEATING 1» and hot water generation.
5.2.1.1 Heating circuit
Caution!
Risk of damage due to frost.
If rooms are not adequately heated, this
may cause damage to the building and to
the heating installation.
▶ If you are absent during a frosty spell,
ensure that the heating installation re-
mains in operation and provides ad-
equate frost protection.
«Menu»
→
«Desired temperatures»
→
«HEATING 1»
–
You can set two different desired temperatures for the
heating circuit.
–
The desired «day temperature» is the temperature you
wish to have in the rooms during the day or when you
are at home (Comfort mode).
–
The desired «night temperature» is the temperature that
you wish to have in the rooms during the night or when
you are away from home (Set-back mode).
5.2.1.2 Hot water generation
Danger!
Risk of being scalded by hot water.
There is a danger of scalding at the hot
water draw-off points if the temperatures
are greater than 60 °C. Young children
and elderly persons are particularly at risk,
even at lower temperatures.
▶ Select the temperature so that nobody is
at risk.
«Menu»
→
«Desired temperatures»
→
«Domestic hot wa-
ter»
–
You can only use the controller's functions and setting
options for hot water generation if a domestic hot water
cylinder is connected to the heating installation.
You can set the desired «Hot water circuit» temperature
for the hot water circuit.