Only trained and authorised experts must install the device and make the electrical connection under full
observance of these installation instructions.
1 Temperature selector with LCD
2 Device cap
3 Lower section, back panel
4 DHW compression ﬁtting
5 Cold water compression ﬁtting
6 Top, back panel
8 Coding card for output selection for
the DDLE LCD 18/21/24
9 LED diagnostic "trafﬁc light" for operating
and fault indications
10 Plug-in position from the temperature
11 Safety pressure limiter (AP 3) with reset
12 Mains terminal
13 Knock-out for power connection from above
14 Fixing toggle
15 Outlet sensor
16 High limit safety cut-out (STB) with reset
17 Heating system
This electronically regulated instantaneous water heater is a pressure device for the heating of cold water to
DIN 1988 / EN 806 that can supply one or several draw-off points.
The bare wire heating system is suitable for hard and soft water areas (for application range, see
"5.2 Application areas").
Instructions and regulations
equipment, must only be carried out by a qualiﬁed contractor in accordance with these instructions.
intended for this equipment.
18 Flow sensor
19 Temperature selector plug "set T"
20 Type plate
21 Mounting bracket
22 Stud for mounting bracket
23 Cable grommet (power cable from above/below)
24 Twin nipple (cold water with shut off valve)
25 Flat packing
26 Screws/rawl plugs for ﬁxing the back panel in
case of water connection on ﬁnished walls
27 Flow limiter, only for theDDLE LCD 18/21/24
(secured to the cold water pipe)
28 Installation and operating instructions
29 Installation template
31 Flow limiter
32 Proﬁle washer
33 Support panel