Replacing components
74
Installation and maintenance instructions ecoTEC plus 0020134833_01
14
14 Replacing
components
The work described in this section must only be carried out
by a competent person.
>
Only use genuine Vaillant spare parts for repairs .
An overview of the available genuine Vaillant spare parts
can be obtained:
– From your parts wholesaler
– Alternatively contact Spares Technical Enquiries on
01773 596615
or via email: [email protected]
14.1
Preparing for and completing replacement
work
14.1.1 Preparing for replacement work
e
Danger!
Risk of death from electric shock!
Mains connection terminals L and N remain
live even if the continuous voltage on/off
switch is turned off.
>
Before carrying out maintenance work
on the boiler, switch the boiler off using
the on/off button.
>
Disconnect the boiler from the power
mains by disconnecting the mains plug
or by de-energising the boiler via a parti-
tion with a contact opening of at least
3 mm (e. g. fuses or power switches).
i
When carrying out any repair to the boiler, make
sure that you observe the following instructions
for your own safety and to avoid material dam-
age to the boiler.
>
Switch off the boiler.
>
Disconnect the boiler from the power mains (
¬ sec-
tion 11.3
).
>
Remove the front casing (
¬ section 4.8
).
>
Close the gas isolator cock.
>
Close the service valves in the heating flow and in the
heating return.
>
Close the service valve in the cold water pipe.
>
Drain the boiler if you want to replace components that
carry water (
¬ section 11.3.2)
.
>
Make sure that water does not drip on live components
(e.g. the electronics box).
>
Use only new seals and O-rings.
14.1.2 Completing replacement work
>
Perform a gas family check after working on the gas
route (
¬ section 12.1.5
).
b
Caution.
Operating fault or a reduction in the
working life of the boiler.
The leak detection spray may damage the
boiler.
>
Do not spray the leak detection spray on
the covering cap on the filter of the Ven-
turi.
>
Check the boiler for gas leaks.
>
Reattach the front casing (
¬ section 4.8
).
>
Perform a function check (
¬ section 10.13
).
14.2
Replacing the burner
>
Remove the compact thermal module
(
¬ section 12.4.1
).
1
14.1 Replacing the burner
>
Undo the four screws (
1
) on the burner.
>
Remove the burner.
>
Fit the new burner with a new seal. Make sure that the
nose on the burner window grips the seal inside the
recess in the burner.
>
Reinstall the compact thermal module.
(
¬ section 12.4.6
).
Summary of Contents for ecoTEC plus VUI
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