Vaillant VED E 18/7 E HK Instructions for use and installation - page 32
Installation
12
Installation instructions for the electronicVED exclusive electric instantaneous water heater 0020176440_00
4
b
Caution.
Risk of damage due to pipes being
blocked by foreign bodies in the water.
A water filter that stops foreign bodies
entering the unit must be fitted to the cold
water flow. The unit must not be used with-
out a water filter. A water filter has been fit-
ted inside the cold water pipe at the fac-
tory.
> During installation, check that the water
filter is present.
> Check that the cold water filter fitted at the factory is in
the correct position in the unit-side cold water connec-
tion. The cold water filter is an additional seal on the
cold water side.
4.6
Connecting the unit to the electricity
supply
e
Danger!
Risk of death from electric shock from
live lines and connections!
> Isolate all supplies from the power supply
before carrying out electrical work.
> Check that there is no voltage in the sup-
ply lines and connections.
> Ensure that the power cannot be
restored inadvertently to any of the sup-
ply lines and connections while you are
working on the unit.
> When connecting the electricity supply, also observe the
local regulations from the electricity supply company as
well as the specifications on the identification plate.
> Also note the following conditions:
– The unit must be installed using a permanent connec-
tion.
– The permanent connection must be equipped with a
customer-supplied partition that has a contact separa-
tion of at least 3 mm on all lines. A line protection
switch, for example, is suitable for this purpose.
– The unit must be connected to the protective earth.
– The unit is delivered pre-assembled. When connecting
the electricity supply, only the electricity line needs to
be fed in to the unit and connected. This happens
using one of the two anti-spray-water sleeves that
prevent water penetrating the unit; see Figure 4.7,
Cutting the anti-spray-water sleeve for the cable rout-
ing. The connection is fixed to the upper section of
the unit at the factory. If required, it can be connected
to the lower section of the unit but the electricity line
must be fed through the lower anti-spray-water
sleeve.
4.6.1 Electrical connection from above
The electricity line is fed through the upper anti-spray-
water sleeve (2). Figure 4.7 explains how the anti-spray-
water sleeve must be prepared.
> Connect the individual conductors to L1, L2 and L3, and
the protective earth to the mains connection terminal
(1 in Fig. 4.12).
3
3a
1
2
4
5
6
4.12
Electrical connection from above or below
4.6.2 Electrical connection from below
The electricity line is fed through the lower anti-spray-water
sleeve (5). Figure 4.7 explains how the anti-spray-water
sleeve must be prepared.
> Unscrew the mains connection terminal (1) (see Fig. 4.12).
> Move the mains connection terminal (6), including the
internal cable, to the lower position (4) in the unit.
> Screw the mains connection terminal to the lower posi-
tion (4).
> Pay particular attention to the internal protective earth
(3) that is screwed to position 3a.
> Check again that the mains connection terminal cables
are correctly positioned.
> Connect the individual conductors to L1, L2 and L3, and
the protective earth to the mains connection terminal
(1 in Fig. 4.12).