Functional description
Operating instructions VRC 470 0020116689_00
19
5
5
Functional description
The controller offers various functions, modes and
advanced functions for controlling the heating circuit
and hot water production.
– With the functions, you can read information, and set
desired temperatures, periods and basic settings.
– With the modes, you select whether or not the heat-
ing circuit, hot water production and circulation
should be operated in automatic or manual mode.
– With the advanced functions, you can change the
active mode for the heating circuit and hot water pro-
duction in special situations quickly and with time
restrictions.
5.1 Functions
You can set the functions via the left function key
"Menu".
The path details given at the start of each function
description indicate how you reach this function in the
menu structure.
You can read and set heating circuit 1 and, if relevant,
heating circuit 2 independently of one another.
5.1.1
Reading information
Menu
¬
Information
Select the "Information" list entry in selection level 1 to
reach selection level 2 with the list entries "System sta-
tus", "Solar yield", "Contact details" and "Serial
number".
Reading the system status
Menu
¬
Information
¬
System status
Select "System status" to read a list of the current sys-
tem values: Status, Water pressure, Domestic hot water
and the current values for "HEATING 1" and, if relevant,
"HEATING 2".
There is also information under "System status":
– regarding the active period ("Auto day temp until"),
– regarding exceptions in the time programmes, which
you may have set using the "Days away from home"
and "Days at home" functions.
Only the desired temperatures for "Day temperature"
and "Night temperature" can be also set directly under
"System status". All other values are set in other places
in the menu structure, as described in the following sec-
tions.
i
The "Room temperature" list entry is only
shown under "System status" if a remote con-
trol unit VR 81/2 is connected.
i
"HEATING 2" is only shown under "System
status" if a mixer module VR 61/2 is con-
nected. "HEATING 2" has the same read
options and settings as "HEATING 1".
Reading the list of status messages
Menu
¬
Information
¬
System status
¬
Status
If no service is required and no errors have occurred,
the value "OK" is shown next to "Status". If a service is
required or an error has occurred, the value "Fault" is
shown next to "Status". In this case the right function
key has the function "Display". If you press the right
function key "Display", the list of status messages is
shown in the display.
i
The "Collector temp", "Solar yield" and
"Reset solar yield" list entries are only shown
under "System status" if a solar module
VR 68/2 is connected.
Reset solar yield (only with a connected VR 68/2)
Menu
¬
Information
¬
System status
¬
Reset solar
yield.
If you select the setting "Yes" under function "Reset
solar yield" and press the right function key "Ok", you
reset the previously totalled solar yield to 0 kWh. After
30 seconds the setting "Yes" automatically returns to
"No".
i
The "Solar yield" list entry is only shown
under "Information" if a solar module VR 68/2
is connected.
Display solar statistics (only with a connected
VR 68/2)
Menu
¬
Information
¬
Solar yield
The diagram under "Solar yield" shows a comparison of
the monthly solar yields of the previous year and of the
current year as well as the peak values of the last
month.
Display installer contact details
Menu
¬
Information
¬
Contact details
If the heating engineer entered his company name and
telephone number during the installation, you can read
this data under "Contact details".
Reading the serial number and article number
Menu
¬
Information
¬
Serial number
"Serial number" shows the serial number of the unit,
which the heating engineer may require you to tell him.
The article number is found in the second line of the
serial number (
¬
Fig. 4.10
).
