Clean The Heat Exchanger; Cleaning The Condensate Paths And Siphon; Checking The Burner - Vaillant ecoMAX 665 Installation And Maintenance Manual

7 Inspection and maintenance

7.2.2 Clean the heat exchanger

a Caution!
Protect the lowered electronics box against
spray water.
• Dismantle the compact thermo module as described
under 7.2.1.
• Clean the heating spiral (1) of the heat exchanger.
Rinse with water.
Fig. 7.3 Cleaning the heat exchanger
h Note!
When the primary heat exchanger is cleaned,
the condensate path and the siphon should also
be cleaned, see chapter 7.2.3.
The connection elbow and the corrugated pipe
can be used to help you in rinsing out the pri-
mary heat exchanger. Remove these from the
siphon (2, fig. 7.4) and leave the clips and con-
nection elbow on the primary heat exchanger.
7.2.3

Cleaning the condensate paths and siphon

1
2
Fig. 7.4 Cleaning the condensate paths (1)
30
To clean the condensate paths, the condensate hose can be
dismounted from the primary heat exchanger (1, fig. 7.4)
and the complete condensate siphon (2) dismounted. Then
both can be cleaned in a disassembled state.
Observe also the siphon installation instructions provided.
d Danger!
If the appliance is operated with an empty con-
densate siphon, there is the danger of poisoning
through escaping flue gases. Therefore, refill
the siphon after each cleaning.
• Remove the condensate water trap beneath the appli-
2
ance and clean it.
• Remove the clips beneath the primary heat exchanger
and pull off the connection elbow.
• Remove the siphon and the corrugated pipe (consider
the position of the latches).
1
• Clean the components.
a Caution!
Make sure that no spray water comes into con-
tact with other components. If it does, damage
may be caused.
After cleaning, reinstall all condensate path components
(see siphon operating instructions). Make sure you fill
the condensate siphon with water. Fit new seals at all lo-
cations and test the condensate path for leakage.
1
Fig. 7.5 Cleaning the siphon (2)

7.2.4 Checking the burner

The burner is maintenance-free and needs no cleaning.
The surface should be checked for damage, and the
burner replaced if necessary.
• After checking/replacing the burner, install the com-
pact thermo module as described in 7.2.1.
Installation and maintenance manual ecoMAX 665 / 0020020159_03