Wolf FGB-28 - High Efficiency Pump Function Description

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Residualheadofthehighefciencypump(EEI≤0,20)
Residual head in [mbar]
Possibilities Heating mode 2 operating modes are possible with the modulating
heating circuit pump:
1.Spreadcontrol(ΔT)
This type of control aims to utilise the condensing effect
as fully as possible while minimising the electrical energy
required by the pump. This is achieved by constantly
maintaining a prescribed spread.
2. Fixed speed setting (constant)
The heating circuit pump runs at the xed set speed,
both for minimum and maximum burner output. The
pump rate is not controlled subject to the required heat-
ing load and power consumption is not reduced.
DHW mode The heating circuit pump does not modulate, it continu-
ously operates at the selected "DHW" pump speed. (See
table "Factory settings for pump speed".)
Standby mode The pump does not run when the boiler is in standby
mode.
Operating setting The pump control can be set with parameter H37.
Pump rate in [l/h]
0
100
200
300
400
500
600
700
800
0 200 400 600 800 1000 1200 1400 1600
40 %
50 %
60 %
70 %
80 %
90 %
100 %
Overow valve
450 mbar
26.Highefciencypumpfunction
description
Highefciencypumpfunctiondescription(EEI≤0,20)