Speed Control - Viessmann VITOSOLIC 200 Installation And Service Instructions Manual

Cylinder heating
3. Main menu
■ "System"
■ "Setting values"

Speed control

The speed control can only be enabled
for outputs R1 to R4.
If variable speed control is to be enabled
for pumps connected to these outputs,
these pumps must not have their own
speed control. Set multi-stage pumps to
the required stage.
Note
When using pumps with their own varia-
ble speed control, set "On/Off" for
"Control".
When the start temperature differential
"ΔTon" has been exceeded for the
respective pump, that pump will be star-
ted at the minimum speed.
If the temperature differential rises to
"ΔTset" (differential temperature for the
start of the speed control; can only be
activated for the collector circuits), then
the speed is increased by 10% with
every rise by the value selected in
"Rise".
(cont.)
Function description
– "Th3on"
Delivered condition 40 °C
Set a value.
– "Th3off"
Delivered condition 45 °C
Set a value.
Example:
Speed control of the solar circuit pump at
relay R1
60
50
40
30
20
10
0
0 2 4 6
Temperature differential in K
Values in the delivered condition
ΔT1on =8 K
ΔT1off =4 K
ΔT1set =10 K
Rise 2 K
Make the following settings at the
solar control unit:
1. Main menu
■ "Solar"
■ "Setting values"
– "ΔTon"
Set a value.
– "ΔToff"
Set a value.
– "ΔTset"
Set a value.
8 10 12 14
139