18
19
CONTROL PARAMETERS
9
Active control parameters depend on the selected system
layout. Only the parameters displayed for the active system
layout can be modified.
19.1
System layout selection
Arr
: System layout selection
Setting range: 1 ... 3
Default setting: 1
This parameter lets you select a predefined system layout. Every
system layout has specific settings that can be modified indi-
vidually.
If the system layout is modified later, all settings are lost. For this
reason a warning question is always displayed when settings
are changed in the Arr parameter.
Confirm the warning question only if you really want to change
the system layout!
Press button 3 to confirm the safety question.
19.2
∆
T settings
DT O
: Activation temperature differential
Setting range: 1,0 ... 20,0 K
Default setting: 6.0 K
DT F
: Deactivation temperature differential
Setting range: 0,5 ... 19,5 K
Default setting: 4.0 K
Initially, the controller acts as a standard differential controller.
The pump is activated as soon as the activation differential (DT
0) is reached.
If the temperature differential is les than the set deactivation
temperature differential (DT F), the controller deactivates the so-
lar pump
Note!
The activation temperature differential must be at least
0.5 K above the deactivation temperature.
RIS
: Boost
Setting range: 1 ... 20 K [2 ... 40 °Ra]
Default setting: 2 K [4 °Ra]
Note!
The functioning mode of the corresponding relay must be
set to “Auto” for speed control (control parameter
MAN1/MAN2
).
When the activation temperature differential is reached, the
pump is activated at maximum speed or 10 seconds. Speed is
then reduced to the minimum speed setting (Default setting =
30 %).
When the temperature differential reaches the nominal temper-
ature differential setting, speed is increased by one step (10 %).
Every time the differential increases by the value set in RIS, speed
increases by 10% until it reaches the 100% maximum speed.
Note!
Nominal temperature differential must be at least 0.5 K
[1°Ra] greater than the activation temperature differential.
19.3
Pump control
PUM
: Pump control
Selection: OnOF, PULS, PSOL, PRIS
Default setting: OnOF
