Table of Contents
Advertisement
14
Replacing components
14.8
Replacing the expansion vessel of the
layered storage tank
> Close the cold water stop valve.
> Open a hot water valve to depressurise the water circuit.
Close the hot water valve.
> Unscrew the bolt from the cover of the layered storage
tank.
> Remove the cover.
2
1
14.14 Replacing the expansion vessel of the layered storage
tank
The expansion vessel (1) is freely accessible.
> Undo the nuts (2) on the expansion vessel (1).
> Detach the expansion vessel from the screwed pipe and
remove it from the EPS insulation.
> Insert the new expansion vessel into the EPS insulation.
> Reconnect the new expansion vessel. To do this, use a
new seal.
> Check the filling pressure of the expansion vessel (mini-
mum pressure is 4 bar).
> Fill and purge the boiler and the layered storage tank.
14.9
Replacing the cylinder charging pump on
the layered storage tank
> Close the stop valve on the hot water system and drain
the boiler and layered storage tank on the hot water
side.
80
1
6
5
4
14.15 Replacing the cylinder charging pump
> Remove the discharge pipe (1) from the expansion relief
valve on the boiler.
> Fold the electronics box forwards (¬ section 8.2).
> Open the electronics box (¬ section 8.2).
> Pull the plug (X12 ) out of the PCB.
> Pull the free end of the line carefully through the grom-
mets on the boiler and on the layered storage tank.
> Loosen the pump sensor line from the cable harness by
pulling the plug out of the cable harness.
> Unscrew the pipe elbow (6) from the casing.
> Undo the screwed connection (2) on the connection pipe
(3).
> Undo the spring clip (5) on the casing of the cylinder
charging pump (4). At the same time, use your free hand
to support the cylinder charging pump to ensure that it
does not fall out of the casing.
> Pull the cylinder charging pump downwards out of the
casing.
> Fit the pipe elbow to the new cylinder charging pump
and use new seals for it.
> Install the new cylinder charging pump in reverse order
and use new seals for it.
> Connect the pump's electrical lines in reverse order. In
doing so, pay attention to the correct pipe routing.
> Refit the discharge pipe (1) and use new seals.
> Fill and purge the boiler and the layered storage tank.
Installation and maintenance instructions ecoTEC plus 0020134833_01
2
3
Advertisement
Table of Contents
