GB
6
Operating elements
1
Day temperature selector
for adjusting to required room temperature.
2
Override/one-off filling of tank
for temporary deactivation of heating program or for one-
off heating up of tank water (Domestic hot water for VUW
combination boilers only in GB).
5
Device cover
6
Display
The display shows the time and day, along with controller
mode and status information
7
Operating mode switch
”Program“ setting
In this setting, the room temperature is controlled by the
pre-set program.
“Heating“ setting
In this setting, the room temperature is permanently
controlled according to the temperature pre-selected on the
day-temperature selector (
1
).
“Reduce“ setting
In this setting, the room temperature is permanently
controlled according to the reduced (night) temperature.
Display, Overview
A
Day of the week
B
Status indicator
Heating on
The appliance is in heating mode.
Hot water
The appliance is in hot water mode.
Party
The appliance is in party (override) mode
(see page 10).
The “Heating mode“ display message is
blocked-out as heating and hot water are
both available in this operating mode.
DHW Boost
The appliance fills the hot-water tank on a
single occasion (see page 11).The
appliance activates the warmstart of the
Aqua-Comfort system. (ecoMax 800 only)
Holiday
The holiday program is active (see p. 36).
Error messages (see page 48)
Appl. Fault
There is heating system fault.
Conn. Fault
Data transfer from the controller to the
heating unit has been interrupted.
CH2 Fault
The connection to the flow temperature is
malfunctioning.
Maintenance
The heating appliance must be serviced.
(only available with compatible boiler and
electronics; not available in GB)
C
Outside temperature
D
Operating mode "Night setting”
E
Operating mode "Heating”
F
Operating mode "Program”
G
Actual time
H
Actual temperature
(only shown on wall-mounted version)
☞
Heating circuits:
Please indicate at this point which rooms are to be
controlled via the two heating circuits (
HC
):
HC1:
HC2:
Summary of Contents for VRC 420
Page 52: ...52 ...
Page 56: ...56 1 2 3 3 7 8 9 4 VRC_VC_054 0 VRC_VC2_021 0 ...
Page 60: ...60 bar 2 1 3 0 Party Sa 15 C C VRC VCC 1 0 2 3 1 2 3 3 4 3 VRC VC2_022 0 ...
Page 68: ...68 4 4 3 3 1 2 5 DCF 0 AF VRC_DCF_003 ca 40 mm 4 5 10 mm DCF 0 AF VRC_DCF_004 ...
Page 76: ...76 ϑ ϑ 3 3 3 2 3 3 4 2 230V 3 3 2 3 3 VRC VC2_002 2 ...
Page 78: ...78 230V 3 2 3 3 3 4 3 3 3 2 3 3 3 VRC 420 VRC 420 VRC VC2_005 1 ...
Page 82: ...82 Party Sa 15 C C VRC VCC 1 0 2 3 1 2 3 1 2 2 1 7 6 5 3 4 VRC 420 VRC VC2_020 0 ...