Inspection and maintenance
Condens 7000 F – 6720871560 (2019/11)
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11.8
Cleaning the burner and heat exchanger
11.8.1 Cleaning the burner
If there is heavy contamination, the burner rod can be separated from
the mixture manifold and a blow gun with a long, angled blow pipe can be
used to blow them off from the inside and outside using a reasonable
amount of compressed air (max. 3 bar).
▶ Re-install the burner rod with a new gasket.
11.8.2 Cleaning the heat exchanger
DANGER:
Danger 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 11.11.3, page 42).
▶ Dry and/or wet clean the heat exchanger.
▶ Shut down the heating system (
Chapter 9.1, page 30).
▶ Close the gas main shutoff valve or gas isolator.
▶ Allow floor standing boiler to cool down.
▶ Remove the front panels and corresponding side panels.
▶ Place the tundish that collects dirt and condensate residues under
the condensation catch pan.
▶ Pull the siphon [1] off the drainage connection of the condensation
catch pan [2] and out of the drain pipe. Turn slightly sideways in
doing so.
Fig. 47 Removing the siphon
[1]
Siphon
[2]
Condensation catch pan outlet
▶ Unscrew the screws on the cover of the condensation catch pan
(with boiler rating 150-300 kW).
▶ Remove the cover.
Fig. 48 Removing the cover of the condensation catch pan (illustration
shows boiler size 150-300 kW)
[1]
Cover of condensation catch pan
▶ Remove the dirt trap: press the bottom tabs slightly together so the
dirt trap can be lifted up and out of the drainage connection.
▶ Rinse the dirt trap and siphon under running water.
Boiler sizes 75-100 kW do not have a dirt trap and are equipped with a
cleaning pipe socket with cap instead of the cover
Fig. 49 View of condensation catch pan without cover
[1]
Dirt trap
Fig. 50 Dirt trap following removal
[1]
Dirt trap
0010012553-001
2
1
1
0010012528-001
0010013911-001
1
0010013912-001
1
