Installation Instructions; Equipment Layout; Brief Description; Important Information - AEG DDLE LCD 18 Gebrauchs- Und Montageanweisung

For contractors

2.

Installation instructions

Only trained and authorised experts must install the device and make the electrical connection under full
observance of these installation instructions.
2.1

Equipment layout

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
7 Electronics
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
selector cable
11 Safety pressure limiter (AP 3) with reset
button
12 Mains terminal
13 Knock-out for power connection from above
14 Fixing toggle
15 Heating system
2.2

Brief description

This electronically regulated instantaneous water heater is a pressure device for the heating of cold water to
DIN 1988 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").
2.3

Important information

• Air in the cold water supply can destroy the bare wire heating system inside the equipment or can trip
the safety system. If the water supply to the instantaneous water heater has been interrupted, e.g.
because of a risk of frost or work on the water system, take the following measures prior to taking the
!
equipment back into use:
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 the equipment.
3. Replace the fuses or reset the relevant MCBs.
The instantaneous water heater is equipped with an air detector which, to the greatest extent,
prevents damage to the heating system:
If, during operation, air is drawn into the instantaneous water heater, the equipment shuts down
the heating load for one minute, thereby protecting the equipment.
• Taps
– Direct draw-off tap for instantaneous water heater ADEo 70 WD - mono-lever mixer with changeover
bath/hand shower, part no. 18 39 34.
- The installation may be carried out using commercially available pressure tested taps.
- For thermostatic pressure tested valves, see information "1.6 Recommended adjustment".
• Always carefully observe all information in these operating and installation instructions.
These contain important information regarding safety, operation, installation and maintenance of this
equipment.
2.4

Instructions and regulations

• The installation (water and electrical work) and commissioning, as well as the maintenance of this
equipment, must only be carried out by a qualified contractor in accordance with these instructions.
• Perfect function and safe operation can only be assured when using original accessories and spare parts
intended for this equipment.
• Observe all locally applicable instructions and regulations regarding water and electrical connections, such
as DIN VDE 0100, DIN 1988, DIN 4109, DIN 44851.
• Observe all regulations of your local water and electricity supply companies.
26
A - O
16 Flow sensor
17 Temperature selector plug "set T"
18 Type plate
19 Mounting bracket
20 Stud for mounting bracket
21 Cable grommet (power cable from above/below)
22 Twin nipple (cold water with shut off valve)
23 Flat packing
24 Screws/rawl plugs for fixing the back panel in
case of water connection on finished walls
25 Flow limiter, only for theDDLE LCD 18/21/24
(secured to the cold water pipe)
26 Installation and operating instructions
27 Installation template
28 Sieve
29 Flow limiter
30 Profile washer
31 Support panel