Operating instructions for electric domestic hot water cylinders VEN 5/6 U and O (plus) 0020129648_02 13
4.7 Electrical installation
e
Danger!
Risk of death from electric shock!
Touching live connections can cause serious
personal injury.
> Isolate all supplies from the power supply
before carrying out electrical work.
> Check all supply lines and connections for
absence of voltage.
> Ensure that the power cannot be restored
inadvertently to any of the supply lines and
connections while you are working on the
unit.
b
Caution!
Material damage.
The unit may be damaged if the correct
installation sequence is not observed.
> Do not connect to the power until the VEN
electric domestic hot water cylinder has
been filled with water.
TR
S
T
B
1
2
3
4
5
6
Fig.4.7 Circuit diagram
Key
1 Temperature controller (TR)
2 Indicator lamp (neon glow lamp)
3 Protective conductor
4 Safety temperature limiter
5 Mains plug
6 Heating element
i
The electric domestic hot water cylinder must
be connected only to an earthed socket out-
let (2 kW, 230 V~) installed in accordance with
all applicable regulations.
The earthed socket outlet must be freely
accessible at all times.
The electric domestic hot water cylinder is
not suitable for a fixed wiring installation.
The power plug must not be plugged into the
safety socket outlet until the electric domes-
tic hot water cylinder has been filled with
water.
Installation 4
INTEN
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