Heat Statement; Speed Control - Viessmann VITOSOIC 100 Installation And Service Instructions Manual

Heat statement

The heat statement is calculated from
the temperature differential between the
collector and cylinder temperature as
well as the selected throughput (see
service instructions "Vitosol").
1. Set "OWMZ" to "ON" (see
page 43).
2. Check the throughput at the flow
meter of the Solar-Divicon at 100 %
speed and set that value as
"VMAX".
MEDT setting
0
1
2
3
Setting parameters
VMAX
MEDT
MED %

Speed control

Speed control is disabled at the factory
("RPM" set to 0, see page 33). It can
only be enabled for relay output R1
(solar circuit pump).
The solar circuit pump must not have its
own speed control. Set multi-stage
pumps to the required stage.
Note
When using pumps with their own varia-
ble speed control, set "RPM" to 0.
3. Adjusting the frost protection of the
heat transfer medium "MEDT".
4. If necessary, adjust the mixing ratio
of the heat transfer medium "MED
%".
Heat transfer medium
Water
Propylene glycol
Ethylene glycol
Viessmann heat transfer medium
Delivered condition
5.0 l/min
40 %
The solar circuit pump will be switched
on, if "DT E" is exceeded.
If the temperature differential rises to
"DT S" (differential temperature for the
start of the speed control), the speed is
increased by 10% with every rise by the
value selected in "ANS" (rise).
Function description
Setting range
0.1 – 20 l/min
3 0 – 3
20 – 70 %
63