Heating Water Buffer Cylinder - Viessmann VITOLIGNO 300-C Operating Instructions For The System User

Setting the operating program for the heating water buffer cylinder
There are 3 operating programs available for control-
ling the heating water temperatures in the heating
water buffer cylinder:
"Automatic system"
■
In automatic mode, the average set temperature of
the heating water buffer cylinder is determined auto-
matically via the selected heating curve of the heat-
ing water buffer cylinder. A set value is determined
subject to the outside temperature and the selected
values for level and slope.
■ "ON"
In manual mode, you can specify a fixed value for
the average set temperature of the heating water
buffer cylinder. You can enter this set value in the
"Buffer" menu when manual mode is selected.
■ "OFF"
In this operating program, the boiler heats the heat-
ing water buffer cylinder. However, the heating water
temperature has no influence on the boiler operation.
Press the following keys to set the operating program:
1. for the "Extended menu".
å
2. / for "Buffer".
| ~
3. to confirm.
d
Setting the time program for the heating water buffer cylinder
You can set these heating times by adjusting the time
program for the heating water buffer cylinder. During
the time phases set, the heat-up condition of the heat-
ing water buffer cylinder has an effect on the operation
of the boiler.
■ The time program for the heating water buffer cylin-
der is made up of time phases. A time phase from
06:00 to 22:00 h every day is set at the factory.
■ The time program for the heating water buffer cylin-
der is preset to Automatic mode at the factory. In
automatic mode, the time program for the heating
water buffer cylinder is disregarded.
■ If you don't require automatic mode, you can select
up to 4 individual time phases per day. For each time
phase you set the start and end points.

Heating water buffer cylinder

4. / for "Operating program".
| ~
5. to confirm.
d
6. / for "Automatic system", "On" or "Off".
| ~
7. to confirm.
d
Enter the average set temperature of the heating water
buffer cylinder in manual mode:
1. for the "Extended menu".
å
2. / for "Buffer".
| ~
3. to confirm.
d
4. / for "Set temp man mode".
| ~
This menu point is only available when man-
ual mode is selected.
5. to confirm.
d
6. / for the required temperature.
| ~
7. to confirm.
d
Note
If you are using a solar thermal system for central
heating backup, balance the charging times of the
heating water buffer cylinder with the control unit of the
solar thermal system.
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