Replacing Components; Preparing For And Completing Replacement Work; Removing/Fitting The Side Section (If Required) - Vaillant ECOTEC PLUS VU 80 Installation And Maintenance Instructions Manual

15

Replacing components

15 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 .
You can find information about available Vaillant genuine
spare parts from the contact address provided on the
reverse of this document.
15.1 Preparing for and completing replacement
work
Danger!
e
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 de-energising the boiler using a
partition 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.
> Isolate the boiler from the power mains.
> Remove the front casing (¬ section 4.6).
> 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 13.2.2).
> Make sure that water does not drip on live components
(e.g. the electronics box).
> Use only new seals and O-rings.
Completing replacement work
> Check the boiler for gas tightness.
> Reattach the front casing (¬ section 4.6).
> Carry out a function test
(¬ section 11.5.1 to 11.5.3).
62
15.2 Removing/fitting the side section
(if required)
15.1 Removing/installing the side section
Caution
b
Risk of material damage caused by
mechanical deformation.
Removing both side sections may cause
mechanical distortion in the product, which
may cause damage to the piping, for exam-
ple, and potentially result in leaks.
> Always only remove one side section –
never both side sections at the same
time.
To remove one side section:
> Tilt the electronics box forward.
> Remove the upper casing (¬ section 13.4).
> Hold on to the side section so that it cannot fall, and
unscrew the lower front and upper central screws from
the side section.
> Tilt the side section slightly to the side and pull it out
towards the front.
To fit the side section:
> Push the side section into the bracket. When doing so,
ensure that all straps on the side panel engage with the
rear back wall in order to prevent leaks.
ecoTEC plus installation and maintenance instructions 0020134823_01