Wolf CGB-2 Series Installation Instructions For Contractors page 49

Parameter HG41
ZHP speed DHW
Factory setting: see table
Setting range: 15 to 100 %
Individual setting:_____
Parameter HG42
Hysteresis, header
Factory setting: see table
Setting range: 0 to 20 °C
Individual setting:_____
Parameter HG43
IO reductn, default value
Factory setting: see table
Setting range: -5 to 10
Individual setting:_____
Parameter HG44
GPV curves offset
(gas valve zero point)
Factory setting: see table
Setting range: 15 to 46.4 %
Individual setting:_____
3064810_201804
24. Parameter description
In DHW mode, the pump runs at this set value. Independent of pump control
type set in HG37.
The header hysteresis regulates the header temperature within the set range by
switching the heat generator ON and OFF. The higher the ON/OFF temperature
differential, the higher the header temperature fluctuation around the set value,
resulting in longer heat generator runtimes, and vice-versa.
Parameter HG43 has two functions:
1. Triggering of a 100 % calibration (burner or IO electrode replacement)
2. Permanent raising or lowering of the IO default value after a 100 % calibration
has been completed.
Calling up HG43 results in an automatic 100 % calibration, which involves a
burner restart. When a 100 % calibration is requested, "100 % calibration Cali
comp. OFF and Cali. active ON" is displayed.
The 100 % calibration is complete as soon as "100 % calibration Cali comp.
ON and Cali. active ON"
The IO default value is an operand for the electronic gas/air mixture and deter-
mines the CO level. By reducing the IO default value, (HG43) the CO
2
can be lowered over the entire output range.
The default value should not be increased/reduced on newly installed applianc-
es or in the event of a burner or IO electrode replacement. In the first hours of
operation, the components are subject to ageing, which can temporarily affect
the CO level. If the CO
2 2
range after approx. 1000 hours run, we recommend raising/lowering the default
value via the HG 43 parameter.
(CO reduction = set positive numerical value under HG43; CO
2
negative numerical value under HG43)
In standard control mode, the zero point specific to the gas valve is automati-
cally determined at minimum output and stored in the control unit. After a gas
valve replacement, set HG44 to the standard value.
Standard values: 14 kW
20/24 kW = 29.3 %
ppears in HG parameter 43 on the display.
a
value of the condensing boiler is outside the CO
= 25 %
value
2
set
2
increase = set
2
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