Buderus Logano plus GB402 Installation And Maintenance Instructions Manual page 35

▶ Clean the hot gas flues of the heat exchanger horizontally and
diagonally using the long cleaning blade.
▶ Clean the back section of the hot gas flues from below through the
condensate pan using the short cleaning blade.
Fig. 52 Dry cleaning the heat exchanger
[1] Long cleaning blade (available separately)
[2] Short cleaning blade (available separately)
DANGER: Risk to life through escaping flue gas!
▶ During installation, look out for faulty gaskets and
ensure they are seated correctly. Replace faulty
gaskets.
▶ Replace the gaskets as described ( Chapter 9.13,
page 39).
▶ Screw the cleaning covers back on.
Fig. 53 View of cleaning cover
[1] 320 kW
[2] 395-620 kW
Logano plus GB402 – 6 720 804 428 (2012/09)
1
2
6720646293-01.1BU
Wet cleaning the heat exchanger
When wet cleaning, use a cleaning agent appropriate to the level of
contamination (soot or encrusted residues). The cleaning agent must be
suitable for aluminium!
▶ Clean the heat exchanger with water or a cleaning agent suitable for
aluminium (see instructions provided by the manufacturer of the
cleaning agent).
During wet cleaning, protect electrical components (fan,
gas train etc.) against moisture and contamination.
Fig. 54 Wet cleaning the heat exchanger
Working on the heat exchanger during wet anddry cleaning
▶ Use a hose to flush any residues into the bucket or the condensate
pan.
▶ Clean the condensate pan with water.
▶ Clean the siphon with water.
DANGER: Risk to life through poisoning! Siphons not
filled with water can cause a risk to life through escaping
flue gas.
▶ Fill the siphon with approx. 2 litres of water.
▶ Re-install the siphon ( Chapter 6.2, page 14).
▶ Check the condensate hose between the boiler flue connection and
the siphon for free flow.
Inspection and maintenance 9
35