Bosch RDH 1810 Installation And Operating Instructions Manual page 4

4 | English
Water connection (Fig. III)
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
maintained to live parts of the heater.
Connect the water outlet and inlet and tighten the se-
curing 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.
Electrical connection (Fig. IV)
As a matter of principle, the water connections must
be completed first of all before the heater is connect-
ed 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 regula-
tions, an all-pole separator must be fitted during in-
stallation. 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 bottom holes 14a!
The wires must not interfere with the operation of re-
lease 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 qualified specialist company, who can also assist
you when you are requesting the approval of the util-
ity company for installation of the appliance.
Mounting the cover onto the heater
(Fig. V)
When you mount the cover onto the heater, ensure
that the switch knob and the switch spindle are cor-
rectly aligned.
9 000 913 849 | (28.10.13)
Startup (Fig. VI)
The device is compliant to IEC 61000-3-12.
Switch on via the water heater fuses in the domestic
wiring.
Select Setting 2 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. VI, A).
Explain the appliance to the user and please give him
the operating instructions.
Priority switch for combination with electric storage
heaters (Fig. VI, B)
If the heater is going to be operated in this way, a prior-
ity 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)
Mains terminal (only on 21 kW and 24 kW
l1
appliances)
Robert Bosch Hausgeräte GmbH