Frost Protection Function; Operating; Operating Structure - Vaillant VRC 700 Operating Instructions Manual

set temperature. You can set a time period during which hot
water should be available in the domestic hot water cylinder.
3.5.3 Circulation
If a circulation pump is installed in the heating installation,
you can set a period for circulation. During the set period, hot
water circulates from the domestic hot water cylinder to the
water taps and back to the domestic hot water cylinder.
3.6

Frost protection function

The frost protection function protects the heating system and
apartment from frost damage. The frost protection function
monitors the outside temperature.
If the outside temperature
–
falls below 4 °C, the controller switches the heat gener-
ator on after a frost protection delay time, and brings the
target room temperature to 5 °C.
–
rises above 5 °C, the controller does not switch the heat
generator on but monitors the outside temperature.
Note
The competent person can set the frost protection
delay time.
4

Operating

4.1

Operating structure

4.1.1 Level for the operator
No special prior knowledge is required for this level. Via a
menu structure, you can access configurable or read-only
values.
4.1.2 Level for the competent person
Using the level for the competent person, the competent per-
son sets further values for the heating installation. The set-
tings may only be made by someone with specialist know-
ledge; this level is therefore code-protected.
4.1.3 Menu structure design
The menu structure of the controller is split into four levels.
There are three selection levels and one setting level. From
the basic display, you access selection level 1 and, from
there, you can access the menu structure for one level up or
down. The setting level is accessed from the lowest selection
level.
0020200782_00 VRC 700 Operating instructions
4.1.4 Basic display
8
Auto
7
19.5
Desired heating temp. 20.0 °C
6
Menu
5
1 Symbol for the current
outside temperature
2 Current outside temper-
ature
3 Current room temperat-
ure
4 Time
The basic display shows the current settings and values of
the heating installation. If you make a setting on the control-
ler, the display on the screen switches from the basic display
to the display with the new setting.
The basic display appears when you:
–
press the left-hand selection button and thus exit selec-
tion level 1.
–
do not operate the controller for more than 5 minutes.
The basic display shows the key displays heating, cooling
and ventilation and the corresponding operating modes as
well as the status of the time period.
If your heating installation has independent zones, the com-
petent person sets the zone whose values are to appear on
the basic display.
4.1.4.1 Symbols for Auto mode
Symbol Meaning
Comfort mode: Within a set time period
Set-back mode: Outside a set time period
4.1.4.2 Soft key function
Both selection buttons have a soft key function. The current
functions of the selection buttons are displayed in the bottom
display line. Depending on the selection level selected in the
menu structure, the list entry or the value, the current func-
tion for the left and right selection buttons may be different.
If, for instance, you press the left-hand function key, the cur-
rent function of the left function key switches from Menu to
Back.
Operating 4
5.0°C 15:34
°C
Operating mode
5 Current function of the
selection buttons
6 Desired setting (e.g.
Desired heating temp.)
7 Symbol for Auto oper-
ating mode
8 Operating mode set
1
2
3
4
5
5