Viessmann VITOCROSSAL CI, Operating Instructions Manual

Page: 17 / 48

17
D
48°C Kesseltemperatur
HK1
14°C
21°C
C
B A
Fig. 12
A
Fault indicator (red)
B
ON indicator (green)
C
Reset button
D
ON/OFF switch
Ask your heating contractor about the following:
■
Level of the required system pressure
■
Position of the following components:
–
Pressure gauge
–
Shut-off valve
–
Gas shut-off valve
–
Vents
1. Check the heating system pressure at the pressure
gauge. The heating system pressure is too low if
the indicator points to the area below the red field.
Top up with water or notify your local heating con-
tractor.
2. For open flue operation:
Check that the vents in the installation room are
open and unrestricted.
Note
With open flue operation, the combustion air is
drawn from the installation room.
3. Open the gas shut-off valve.
4. Switch ON the power supply, e.g. at a separate
MCB/fuse or a mains isolator.
5. Turn on the ON/OFF switch.
After a short time, the standard menu is displayed
(see page 11). The green ON indicator illuminates.
Your heating system and, if installed, your remote
controls are ready for use.
Shutting down the heating system
With frost protection monitoring
For every heating circuit, select the "Standby mode"
operating program.
■ No central heating
■ No DHW heating
■ Frost protection for the boiler and the DHW cylinder
is enabled.
Start-up/shutdown
Switching on the heating system
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