Installation and operating instruction
Oil condensing boiler WTC-OB 18-B
6 Operation
83311002 1/2018-03 La
53-132
6.8.2 Speed controlled pump
Standard control
With this type of control, the pump capacity is assigned to the required burner
stage. When the burner is off, the pump operates at the capacity set in para-
meter
44
.
Set parameter
46
to
1
.
Set pump capacity for the respective burner stage via parameters
42
and
43
.
Differential temperature control
With this control option, the pump modulates between flow sensor and return
sensor depending on the differential temperature.
Set parameter
46
to
2
.
Set differential temperature via parameter
48
.
Set inertia via parameter
49
.
De-couple control
With this control option, the pump modulates between de-couple sensor and flow
sensor depending on the differential temperature. The control differential can be
matched to system specific requirements using parameter
47
.
Connect de-couple sensor to input B11.
