Adjustment Channels - oventrop Regtronic BS/2-B Montage- Und Bedienungsanleitung

4.2 Adjustment channels

∆T -regulation
DT O:
Switch-on temperature diff.
Adjustment range:
1.0 ... 20.0 K [2.0 ... 40.0°Ra]
in steps of 0.5 K [1 °Ra]
Factory setting:
6.0 K [12.0°Ra]
DT F:
Switch-off temperature diff.
Adjustment range:
0.5 ... 19.5 K [1.0 ... 39.0°Ra]
in steps of 0.5 K [1 °Ra]
Factory setting:
4.0 K [8.0°Ra]
Pump speed control
DT S:
Nominal temperature difference
Adjustment range:
1.5 ... 30.0 K [3.0 ... 60.0 °Ra]
in steps of 0.5 K [1 °Ra]
Factory setting:
10.0 K [20.0 °Ra]
RIS:
Rise
Adjustment range:
1 ... 20 K [2 ... 40 °Ra]
in steps of 1 K [2 °Ra]
Factory setting:
2 K [4 °Ra]
Minimum pump speed
nMN:
Pump speed control
Adjustment range: 30 ... 100 %
in steps of 5 %
Factory setting: 30 %
if ODB is activated: 50 %
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 0.5 K [1 °Ra] higher than the switch-off
tempe rature difference.
Note:
When the drainback option ODB is activated,
the temperature differences DT O, DT F and
DT S are set to a fixed adjustment:
DT O = 10 K [20 °Ra]
DT F = 4 K [8 °Ra]
DT S = 15 K [30 °Ra]
Previous adjustments made in these channels will
be overridden and may have to be entered again if
ODB is deactivated later on.
Note:
For pump speed control, the operation mode
of relay 1 must be set to Auto (adjustment
channel MAN)
When the switch-on temperature difference is reached,
the pump is activated at full speed for 10 seconds. Then, the
speed is reduced to the minimum pump speed value (factory
setting = 30 %).
If the temperature difference reaches the adjusted nominal
temperature difference, the pump speed increases by one
step (10 %). If the difference increases by the adjustable rise
value, the pump speed increases by 10 % respectively until the
maximum pump speed of 100 % is reached. The response
of the controller can be adapted via the parameter "Rise".
Note:
The nominal temperature difference must be
at least 0.5 K [1 °Ra] higher than the switch-on
tempe rature difference.
A relative minimum pump speed can be allocated to the
output R1 via the adjustment channel nMN.
Note:
When a load which is not speed-controlled is
used, the value must be set to 100 % in order to
deactivate pump speed control.
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