Start-Up; Menu - Viessmann Vitocrossal 300 Service Manual

Service

Start-up

Legend
A Fault indicator (red)
B ON indicator (green)
C Reset button
D ON/OFF switch

Menu

There are two control levels available, the "Standard menu" and the "Extended menu".
Legend
A Header (shows the heating program for displayed
heating circuit D
B Current outside temperature
C Set room temperature
D Heating circuit which is selected for operation
in the standard menu
42
Vitocrossal 300 CU3A 26 to 57 Service
Starting the heating system
1. Check the heating system pressure at the pressure
gauge. The heating system pressure is too low if
the indicator is below 14 psi.
In this case, top up with water or notify your local
heating contractor.
2. For room air dependent operation:
Check that the ventilation opening of the installation
room are open and unrestricted.
Note: With room air dependent operation, the
combustion air is drawn from the boiler room.
3. Open the gas shut-off valve.
Note: Ask your heating contractor to explain the
positioning and handling of these components.
4. Switch ON the power supply, e.g. at a separate
power switch or fuse.
5. Turn the ON/OFF switch "8" ON. After a short time,
the standard menu is displayed and the green ON
indicator illuminates. Your heating system and, if
installed, your remote controls are now ready for
operation.
Refer to operating instructions for steps
on shut down the system.
Standard menu
Note: If your heating system has 2 or 3 heating circuits:
You can select the heating circuit "HC1", "HC2"
or "HC3" to be displayed in the standard menu.
If your heating system only has 1 heating circuit:
No heating circuit name "HC..." is shown in the
header.
In the standard menu, you can adjust and scan the most
frequently used settings for the heating circuit shown in
the header:
Press the following keys to set room temperature:
for the required value
OK to confirm
Heating programs:
9 Standby mode with frost protection monitoring
w Only DHW
wz Heating and DHW
Press the following keys:
for the required heating program
OK to confirm
Note: 2 minutes after any setting has been made, the
display automatically reverts to the standard menu.