Cleaning The Condensate Siphon; Cleaning The Filter In The Cold Water Inlet - Vaillant ecoTEC plus VUI Installation And Maintenance Instructions Manual

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12
Inspection and maintenance

12.4.4 Cleaning the condensate siphon

Danger!
a
Risk of death caused by improper main-
tenance.
If you operate the boiler with an empty
condensate siphon, flue gas may escape
into the room air.
> Top up the condensate siphon after each
cleaning session.
12.7 Cleaning the condensate siphon
> Remove the lower part (1) of the condensate siphon by
turning the bayonet fitting anti-clockwise.
> Clean the bottom of the siphon by flushing it out with
water.
> Fill the lower section of the siphon with water up to
about 10 mm below the upper edge.
> Re-fit the lower part of the condensate siphon.
> Flush through all discharge pipe work (ensure route and
termination are correct and it is unlikely to freeze up in
severe weather).
66

12.4.5 Cleaning the filter in the cold water inlet

There is a filter in the cold water inlet of the boiler which
must be cleaned during maintenance work.
12.8 Removing the filter from the cold water inlet
> Close the cold water stop valve.
> Drain the layered storage tank (3).
> Unscrew the nut (1, ¬ fig. 12.8) from the cold water pipe.
> Undo the screwed connection (2) on the connector (5).
1
> Unscrew the cap nut (4).
> Remove the connectors including the connection pipe
(5) from the casing.
> Rinse the connector out under flowing water in the
opposite direction to the normal flow.
> Refit the connector with the cleaned filter.
> Refit the connection pipe from the layered storage tank
and the cold water pipe.
> Always use new seals.
Installation and maintenance instructions ecoTEC plus 0020134833_01
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