Vaillant electronicVED plus, Инструкции по эксплуатации и монтажу

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Installation instructions for the electronicVED plus electric instantaneous water heater 0020149585_00
4.5 Connecting the hot and cold water
i
18, 21 and 24 kW electronicVED plus units are
suitable for post-heating water that has
already been pre-heated. It is possible to have
inlet temperatures of up to 60 °C. The unit
can thus be connected to existing solar and/
or heat pump systems. 27 kW electronicVED
plus units are not suitable as the water inlet
temperature must not exceed 25 °C.
>
Observe the following conditions in order to correctly
fit the water connections:
– All cold and hot water pipes can be made of steel,
copper or plastic. It is important to check with the
manufacturer that pipes made of plastic can be
used with temperatures of 65 °C in normal operat-
ing mode. In addition, plastic pipes must be suitable
for a significantly higher load in the short term.
– An expansion relief valve on the cold water pipe is
not required.
– To simplify fitting the water connection, the bottom
section of the unit can be folded up (see ( 1 ) in
fig. 4.10). After fitting the connection, you must
fold the bottom section of the unit back down until
it is engaged again.
The folding frame must not
be removed .
1
Fig. 4.10 Unit's folding frame
b
Caution.
Risk of damage to the unit resulting from
improper use and/or unsuitable tools.
Improper use and/or the use of unsuitable
tools may result in material damage (e.g.
water leaks).
>
Always use a suitable open-end spanner
to tighten or undo threaded connections.
>
Do not use pipe wrenches, extensions, etc.
b
Caution.
Possible damage caused by leaking water
connections.
Leaks may occur due to strains in the line
material.
>
Take care not to strain the lines as you
tighten the water connections.
b
Caution.
Possible damage caused by unsuitable
plastic pipes.
Damage may be caused by unsuitable plastic
pipes.
>
When using plastic pipes, ensure that they
withstand a maximum temperature of
95 °C and maximum pressure of 1 MPa
(10 bar) for at least one hour (check manu-
facturer's specifications).
>
When using plastic pipes, ensure that they
conform with DIN 16893 and DIN 16892
(check manufacturer's specifications).
Installation 4