D e lt a S o l
®
BS/3
© RESOL 10082_deltasol_bs/3.monus.indd
| 20
∆T-regulation
DT O:
Switch-on temperature diff.
Adjustment range: 2.0 ... 40.0°Ra
[1.0 ... 20.0 K]
in steps of 1 °Ra [0.5 K]
Factory setting: 12.0°Ra
[6.0 K]
DT F:
Switch-off temperature diff.
Adjustment range: 1.0 ... 39.0°Ra
[0.5 ... 19.5 K]
in steps of 1 °Ra [0.5 K]
Factory setting: 8.0°Ra
[4.0 K]
The controller works as a standard differential controller. If
the switch-on difference is reached, the pump is activated.
When the temperature difference falls below the adjusted
switch-off temperature difference, the relay switches off.
Note:
The switch-on temperature difference must be
at least 1 °Ra [0.5 K] higher than the switch-off
tempe rature difference.
4.2 Adjustment channels
System layout selection
Arr:
System layout selection.
Adjustment range: 1 ... 3
Factory setting: 1
In this channel, a pre-defined system layout can be selected.
Each system layout has a set of pre-programmed settings
that can be individually changed.
If the system layout selection is changed later on, all adjust-
ments made in the other channels will be lost. Therefore,
changing the system layout is always followed by a security
enquiry.
Only confirm the security enquiry if you are sure that
you wish to change the system layout selection!
Note:
When the drainback option ODB is activated,
the temperature differences DT O and DT F
are set to a fixed adjustment:
DT O = 20 °Ra [10 K]
DT F = 8 °Ra [4 K]
Previous adjustments made in these channels will
be overridden and may have to be entered again if
ODB is deactivated later on.
Security enquiry:
Î To confirm the security enquiry, press button 3