Adjusting The Flue Lengths Cgg-2(K) - Wolf CGU-2-18 Installation And Maintenance Instructions Manual

ON / OFF switch
- At the system ON / OFF switch, switch the boiler first OFF and then ON again. There must not be any fault
present at the boiler.
- Press the reset button within the following 30 seconds and hold it down during the next steps.
- After 5 seconds, the illuminated signal ring indicates the currently selected gas type
(see table: Pipe length adjustment).
- Turn the DHW temperature selector towards the required pipe length and check the setting by means of the
flash sequence of the illuminated signal ring.
- The adjustment will only be activated when the reset button is released.
- A successful conversion of the gas type is indicated by a triple flashing green (0.4 s ON / 1.0 s OFF)
of the signal ring.
Flue gas
pipe length
CGG-2(K)
1
2
3
4*
(factory setting)
5*
Table: Pipe length adjustment
* Operation only with condensate drain pipe in the balanced flue routing (see accessories)
Note: The adjustment of the flue pipe length can also be done with the BM accessory controller
(Contractor parameter HG12, description see chapter
"Displaying / modifying control parameters with Wolf control accessories").
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Adjusting the flue lengths CGG-2(K)

Reset DHW temperature
button
Illuminated
signal ring
Position
Rotary selector
Temperature
selection
DHW
1
2
3
4
5
selector
Heating water
temperature
selector
Illuminated ring
Calculated length
display
(green)
1x0.4 s ON/OFF
1x1.5 s pause
2x0.4 s ON/OFF
1x1.5 s pause
3x0.4 s ON/OFF
1x1.5 s pause
4x0.4 s ON/OFF
1x1.5 s pause
5x0.4 s ON/OFF
1x1.5 s pause
Thermometer
Pressure
gauge
(m)
1.3 - 1.5
1.5 - 2.5
2.5 - 3.5
3.5 - 4.0
4.0 - 5.0
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