Heating Circuits And Buffer Cylinder - Viessmann Vitotronic SPS Service Instructions Manual

Configuring the system
Configuration system

Heating circuits and buffer cylinder

Note
For heat pumps with rotary screw compressor, see
page 23.
Fig. 11
Note
When selected, the button will turn green.
Buttons:
■ "SW" (set value)
– The set values for the buffer cylinder and heating
circuits are fixed.
– Set values are adjusted in the detailed illustrations
of system components. The "Set val." and
"Curve" buttons can be found here.
– If "Direct" has been selected, the "Set val.
direct" button appears in the centre of the system
overview. The set value can be adjusted here.
18
(cont.)
■ "OT" (outside temperature)
– The outside temperature determines the flow tem-
peratures of the heating circuits based on the pro-
grammed heating curves.
– The heating curves can be adjusted in the detailed
system view of individual heating circuits under
"Curve".
After you have logged in with the service/expert
password, "Curve" appears under "Heating circ
x".
For "Setting curves", see the "Vitotronic
SPS" operating instructions
■ "Ext. 0-10 V" (external output signal)
The set value for the heating water buffer cylinder
–
and heating circuits is specified by an external
analogue signal (0 V = -10 °C, 10 V = 73 °C or
lower if the maximum flow temperature for the
selected heat pump is below this).