Hydraulic installation
26
Installation and maintenance instructions ecoTEC plus 0020134833_01
6
6.7
Connecting the discharge pipe to the
expansion relief valve on the boiler
The expansion relief valve for the heating installation is
integrated in the boiler.
>
Install the discharge pipe for the expansion relief valve
so that it does not interfere with the removal and fitting
of the siphon trap.
i
We recommend that you do not shorten the dis-
charge pipe supplied.
min.
180
1
2
3
6.5
Fit the discharge pipe on the expansion relief valve
>
Leave an installation space of at least 180 mm beneath
the condensate siphon.
>
Insert a seal (
1
) in the cap nut (
2
).
>
Screw the discharge pipe (
3
) onto the expansion relief
valve.
>
Make the drain line routing as short as possible and in a
downward gradient away from the boiler.
>
Allow the line to terminate in such a way that nobody
can be injured and no cable or other electrical compo-
nents can be damaged if water or steam is ejected.
>
Note that the end of the line must be visible.
>
If the pipe cannot fall to a safe discharge point then the
Vaillant remote pressure relief valve mounting kit can be
used to provide a suitable way to achieve this.
>
Ensure the discharge pipe work is installed, routed and
terminated correctly to minimise the risk of freezing up.
6.8
Connecting the discharge hose to the
expansion relief valve on the layered
storage tank
2
1
6.6
Fitting the discharge hose to the expansion relief valve on
the layered storage tank
The expansion relief valve for the hot water system is inte-
grated into the layered storage tank.
>
Insert the discharge hose (
1
) into the expansion relief
valve (
2
).
The end of the discharge hose can be guided via an open
connection to a tundish and can be connected in a similar
way to the discharge line for the boiler.
Summary of Contents for ecoTEC plus VUI
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