Manual Siemens DH21100M (page 11 of 36) (English, German, Polish, Polish)

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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 BZ45Z20M (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 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.

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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Siemens DH21100M Manual

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