Vaillant ecoTEC plus 618 Spécifications télécharger pdf (Page 38)

38 Instructions for installation and servicing ecoTEC

Fig. 7.3 Cleaning the integral condensation heat exchanger

• Dismantle the burner module as described under 7.2.1.

Caution!

Risk of damaging the primary heat exchanger!

Do not attempt to loosen nor retighten the four

screws (1).

With the burner and fan assembly removed it is now

possible to inspect the main heat exchanger (4).

• Remove any loose deposits from the heating spirals

(3) using a soft brush and jet of water (ensure that

water is kept away from all electrical components. Any

water used to clean the main heat exchanger will drain

through the condensate trap). Avoid pointing the

water jet directly at the insulating surface (2) on the

back of the heat exchanger.

If required the heat exchanger can be cleaned using reg-

ular vinegar.

7.2.3 Checking the burner

Fig. 7.4 Checking burner

The burner (1) is maintenance-free and needs no clean-

ing.

• Check the burner surface for damage, replace the

burner if necessary.

• After checking/replacing the burner, re-assemble the

burner module in the boiler as described in Section

7.2.4.

7.2.4 Refitting the burner module

Fig. 7.5 Replacing the burner door seal

• Insert a new seal (1) in the burner door.

Caution!

The burner door seal (1) and the self-locking

nuts on the burner module (Art. No.:

00 2002 5929) must be replaced each time the

module is removed (for example during mainte-

nance, see table 7.1). If the burner flange insula-

tion on the burner module (Art. No.: 210 734)

shows any signs of damage other small cracks

it must also be replaced.

Fig. 7.6 Refitting the burner module

• Insert the burner module (9) in the integral condensa-

tion heat exchanger (10).

• Tighten the four nuts (4) on the alternate left and

right sides until the burner door fits closely and uni-

formly to the stop surfaces.

7 Inspection and maintenance

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Vaillant ecoTEC plus 618 Spécifications Page 38

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