AEG DDLE LCD 18 - 2 Installation Instructions; Equipment Layout; Brief Description; Important Information

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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
A
-
O
1 Temperature selector with LCD 16 Flow sensor
2 Device cap 17 Temperature selector plug “set T”
3 Lower section, back panel 18 Type plate
4 DHWcompressiontting 19 Mounting bracket
5 Coldwatercompressiontting 20 Stud for mounting bracket
6 Top, back panel 21 Cable grommet (power cable from above/below)
7 Electronics 22 Twin nipple (cold water with shut off valve)
8 Coding card for output selection for
the DDLE LCD 18/21/24
23 Flat packing
9 LEDdiagnostic“trafclight”foroperating
and fault indications
24 Screws/rawlplugsforxingthebackpanelin
caseofwaterconnectiononnishedwalls
10 Plug-in position from the temperature
selector cable
25 Flow limiter, only for theDDLE LCD 18/21/24
(secured to the cold water pipe)
11 Safe ty p ress ure l im it er ( AP 3) wi th rese t
button
26 Installation and operating instructions
12 Mains terminal 27 Installation template
13 Knock-out for power connection from above 28 Sieve
14 Fixing toggle 29 Flow limiter
15 Heating system 30 Prolewasher
31 Support panel
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qualied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.
For contractors
2. Installation instructions