Modulating Pump (Class A) - Wolf CGB-11 Installation Instructions Manual

Residual height of the modulating pump (class A)
Function description
modulating pump
(modulating pump not for 24 kW)
(class A)
Factory settings
„Pump speed"
52

Modulating pump (class A)

300
250
200
150
100
50
0
0 100 200 300 400
In heating mode:
In DHW mode:
In standby mode:
Boiler
Max.
CGB-11 56 %
CGB-(K)-20 77 %
CGB-(K)-24 82 %
20 % 27 % 48 %
9 W 10W 20W
500 600 700 800
Flow rate in l/h Fördermenge [l/h]
The heating circuit pump modulates in proportion to the burner
output, i.e. at max. burner load, the pump operates with the
maximum selected pump speed for „Heating mode". At minimum
burner load, the pump operates with the minimum selected pump
speed for „Heating mode". In other words, the burner and pump
output are regulated subject to the required heating load. The
power consumption is reduced by the pump modulation.
The heating circuit pump will not modulate, but operates con-
stantly with the selected „DHW" pump speed (see table).
The heating circuit pump operated with the selected „Standby
mode" pump speed.
Heating mode
Min.
27 %
48 %
48 %
56 % 74 % 77% 82 % 90 %
25W 43W 44W 51 W 65W
900 1000 1100 1200 1300
DHW Standby
56 % 20 %
74 % 20 %
90 % 20 %
3061344_201509
100 %
69 W
1400