Wolf CGB-2-24 - High Efficiency Pump Function Description

66 3064810_201804
34.Highefciencypumpfunction
description
Residualheadofthehighefciencypump(EEI≤0.23)
Residualheadin[mbar]
Highefciencypumpfunction
description(EEI≤0.23)
Heating mode 3 operating modes are possible with the modulating heating
circuit pump:
1.Pumpspeedlineartoburneroutput(Linear)
The heating circuit pump modulates in proportion to the burner
output, i.e. for max. burner load the pump will run at the
maximum set pump speed for "heating mode"; for minimum
burner output at the minimum set pump speed for "heating
mode". In other words, the burner and pump output are
regulated subject to the required heat load. Modulating the
pump reduces power consumption.
2.Spreadcontrol(dT)
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.
3.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 in relation to the required heating load and power
consumption is not reduced.
DHW mode The heating circuit pump does not modulate, it continuously
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 HG37.
0
50
100
150
200
250
300
350
400
450
500
550
600
650
0 100 200 300 400 500 600 700 800 900 1000
Fördermenge in [l/h]
Restförderhöhe in [mbar]
20 %
2,8 W
70%
21,1W
50%
10 W
80 %
29,5 W
60 %
14,5 W
90 %
40,6 W
100 %
46,6 W
40 %
6,5 W
30 %
4,5 W
Pumpratein[l/h]