Clean The Heat Exchanger; Checking The Burner; Installing The Burner Assembly - Vaillant ecoTEC exclusive 832 Installation And Maintenance Instructions Manual

8 Inspection and maintenance

8.4.2 Clean the heat exchanger

Caution!
a
Protect the electronics box turned down
against sprayed water.
Fig. 8.2 Clean the heat exchanger
• Remove the compact thermal module (see Chapter 8.4.1).
• Clean the pipes (3) of the heat exchanger (4) using
regular vinegar. Flush with water. The water flows out
of the heat exchanger through the water condense trap.
• After a soaking time of approx. 20 minutes, flush away
the dirt particles that have come loose with a powerful
water jet. Avoid pointing the water jet directly at the
insulating surface (2) on the back of the heat exchanger.

8.4.3 Checking the burner

Fig. 8.3 Checking burner
The burner (1) is maintenance-free and needs no cleaning.
• Check the burner surface for damage, replace the
burner if necessary.
• After checking/replacing the burner, dismantle the
compact thermo module as described in Section 8.4.4.
36

8.4.4 Installing the burner assembly

1
Fig. 8.4 Replacing silicone gaskets
2
• Insert the new graphite seals (1) in the burner flange.
3
a Danger!
The two seals (1 - fig. 8.4) on the burner assembly
4
(must be replaced each time the module is
removed (for example during maintenance).
The burner flange insulation (2 - fig. 8.4) on
the compact thermal module (SP no. 21-0734)
may not show any signs of damage; otherwise
it must also be replaced.
1
Fig. 8.5 Installing compact thermal module
• Place the entire compact thermal module (5) onto the
integral condensation heat exchanger.
• Tighten the five nuts (2) across the diagonal until the
burner door fits closely and uniformly onto the mating
surfaces.
• Insert the ignition cable and the earth cable of the
ignition electrode (4).
ecoTEC exclusive installation and maintenance instructions / 0020017768_04
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