Operating instructions

26
For contractors
Only trained and authorised experts must install the appliance and make the electrical connection in full
compliance with these installation instructions.
 
A
–
N
1 Output selector 12 Heating system
2 Appliance cap 13 Type plate
3 Lower section, back panel 14 Mounting bracket
4  15 Stud for mounting bracket
5  16 Cable grommet (power cable from above /
below)
6 Top, back panel 17 Twin nipple (cold water with shut off valve)
7 Power switch unit 18 Flat packing
8 Safety pressure limiter (AP 3) with reset
button
19 

9 Mains terminal 20 Installation template
10 Knock-out for power connection from above 21 Installation and operating instructions
11 Fixing toggle 22 Sieve
23 Support panel (only when installing taps for

2.2 Brief description
This hydraulically regulated instantaneous water heater is a pressure appliance for the heating of cold water to
DIN 1988 that can supply one or several draw-off points.


– even in winter.
The hydraulic control system regulates the electrical output automatically in two output stages, subject to the

The bare wire heating system is enclosed within a pressure-tested plastic jacket. The heating system is also
particularly suitable for water with low limescale or with limescale content (see table 3 "Application areas").
2.3 Important information
 



1. Remove fuses or trip the appropriate MCBs.
2. Open and close a tap downstream of the equipment several times, until all air has been vented from
the cold water supply line upstream and from the equipment.
3. Replace the fuses or reset the relevant MCBs.
 
– ZANKER – taps / valves for instantaneous water heater – see "8. Special accessories".
– Installation with commercially available mains pressure taps is possible.
– Thermostatic pressure valves must be suitable for hydraulically controlled instantaneous water heaters
(see also note "1.6 Recommended adjustment of taps / valves".
Practical information:
In order for the starting volumes (see table 3) of stages I and II to be reached safely, pressure drop values
from the instantaneous water heater, tap / valve, hand shower, shower hose and pipework must be taken
into account during installation.
Typical pressure drop for a shower water volume of 10 l/min.:
– Mono-lever mixer 0.04 - 0.08 MPa
– Thermostatic valves 0.03 - 0.05 MPa
– Hand shower 0.03 - 0.15 MPa
 
important information regarding safety, operation, installation and maintenance of this appliance.
2. Installation instructions
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