Wolf CGU-2-18 Installation And Maintenance Instructions Manual page 23

Contractor level
expert
Code scan
code-NO
- - - -
Factory setting: 1
Frost protection limit
Parameter A09
A09
2.0
Factory setting: 2 °C
Setting range: -20 to +10 °C
Matching the pipe length
Parameter HG00
HG00
4
Factory setting: 4
Setting range: 1 to 5
Burner switching differential
Parameter HG01
HG01
8
Lower burner output Hz
Parameter HG02
HG02
1
3062347_0309
Displaying / modifying control parameters
with Wolf control accessories
Press the r.h. rotary selector to change to control level 2. Turn the r.h. rotary
selector clockwise to select the menu level Contractor and confi rm the selection
by pressing the r.h. rotary selector again.
The display shows the code scan.
The correct code is set by pressing (display indication fl ashes) and then
turning the r.h. rotary selector from 0 to 1. After changing the code from 0 to
1, pressing the r.h. rotary selector again confi rms the setting; you are then at
the Contractor level.
The boiler circuit pump operates constantly if the outside temperature stays
below the selected value. The burner starts and heats the boiler to at least
TK-min., if the boiler water temperature falls below +5 °C.
Note:
Only change the factory setting if you can ensure that the heating system and
its components will not freeze up at low outside temperatures.
Incorrect operation can lead to system faults.
Note
Please note when adjusting parameter A09 (frost protection / outside
temperature), that frost protection is no longer safeguarded if you set
temperatures lower than 0 °C. This can lead to heating system damage.
The control parameter should be
set according to the table opposite,
subject to the calculated length of the
balanced fl ue routing. The calculated
length will be rounded up or down
accordingly.
(Also see chapter "Adjusting the fl ue
length".)
The burner switching differential regulates the burner temperature within a set
range by switching the burner ON and OFF.
The higher the ON / OFF temperature differential, the higher the boiler
temperature fl uctuation around the set temperature.
Factory setting: 8 K
Setting range: 5 to 25 K
The lower burner output in heating mode can be adjusted within the modulation
range. The setting relates to the maximum heating output in kW (see table
"Limiting maximum heating output").
Factory setting: 1
Setting range: 1 to 100
HG00
Adjusting Calculated length (m)
pipe lengths
1 1.3 - 1.5
2 1.5 - 2.5
3 2.5 - 3.5
4
3.5 - 4.0
(factory setting)
5 4.0 - 5.0
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