11
en
III.
Water connection
■
Using the locking screw 15, the water connection can be
aligned by ± 10 mm vertically.
■
Adapt the bend in the “hot” pipe so that it lines up with
the hot-water outlet. In doing so, make sure that the
“cold” elbow connection is not bent.
Attention: Ensure that a distance of at least 6 mm is main-
tained to live parts of the heater.
■
Connect the water outlet and inlet and tighten the secur-
ing nut on the mounting bolt.
Checking for leaks and flushing the heater:
■
Turn on the hot-water tap.
■
Check that all pipe joints are properly sealed.
IV.
Electrical connection
■
As a matter of principle, the water connections must be
completed first of all before the heater is connected to
the electricity supply (400 V AC, 3-phase). The appliance
should be wired up according to the circuit diagram on
the inside of the cover.
■
To guarantee compliance to relevant safety regulations,
an all-pole separator must be fitted during installation.
The contact opening must be at least 3 mm.
■
Terminal BZ 45Z20 (special accessories) can be used if the
connecting cable is fed into the heater via one of the bot-
tom holes 14a!
■
The wires must not interfere with the operation of release
button A on the safety temperature limiter.
Installation note
■
The installation of non plug-in ready appliances must be
undertaken by the respective utility operator or by a quali-
fied specialist company, who can also assist you when
you are requesting the approval of the utility company for
installation of the appliance.
V.
Mounting the cover onto the heater
■
When you mount the cover onto the heater, ensure that the
switch knob and the switch spindle are correctly aligned.
VI.
Startup
The device is compliant to IEC 61000-3-12.
■
Switch on via the water heater fuses in the domestic
wiring.
■
Select Setting II on the appliance and check the water
temperature.
At a low water-pipe pressure
■
Turn on additional cold-water taps and check whether the
heater switches on. Remove the continuous-flow heater if
the heater does not switch on (Fig. A).
■
Explain the appliance to the user and please give him the
operating instructions.
Priority switch for combination with electric storage
heaters (Fig. B)
If the heater is going to be operated in this way, a priority
switch must be connected into the line connecting the L2
phase to the appliance. It should be mounted on the meter
or distribution panel.
a, b Control line for the electricity supply company con-
nected to the coil input on the charging contactor
f1 Safety temperature limiter with mains terminals
f3 Priority switch (current relay)
l1
Mains terminal (only on 21 kW and 24 kW appliances)
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