24
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
17 Flow sensor
2 Equipment cap
18 Temperature selector plug “set T”
3 Base, back panel
19 Type plate
4 DHW compression fitting
20 Mounting bracket
5 Cold water compression fitting
21 Stud for mounting bracket
6 Top, back panel
22 Cable grommet (power cable from above/below)
7 Electronics
23 Twin nipple (cold water with shut off valve)
8 Coding card for output selection for
the DDLE Basis 18/21/24
24 Flat packing
9 LED diagnostic “traffic light” for operating
and fault indications
25 Screws/rawl plugs for fixing the back panel in
case of water connection on finished walls
10 Plug-in position from the temperature
selector cable
26 Second flow limiter, only for the DDLE Basis
18/21/24 (secured to the cold water pipe)
11 Safety pressure limiter (AP 3) with reset
button
27 Installation and operating instructions
12 Mains terminal
28 Installation template
13 Knock-out for power connection from above
29 Sieve
14 Fixing toggle
30 Flow limiter
15 High limit safety cut-out (STB) with reset
button
31 Profile washer
16 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
s
!IRINTHECOLDWATERSUPPLYCANDESTROYTHEBAREWIREHEATINGSYSTEMINSIDETHEEQUIPMENTORCANTRIP
THESAFETYSYSTEM)FTHEWATERSUPPLYTOTHEINSTANTANEOUSWATERHEATERHASBEENINTERRUPTEDEG
BECAUSEOFARISKOFFROSTORWORKONTHEWATERSYSTEMTAKETHEFOLLOWINGMEASURESPRIORTOTAKINGTHE
EQUIPMENTBACKINTOUSE
2EMOVEFUSESORTRIPTHEAPPROPRIATE-#"S
/PENANDCLOSEATAPDOWNSTREAMOFTHEEQUIPMENTSEVERALTIMESUNTILALLAIRHASBEENVENTED
FROMTHECOLDWATERSUPPLYLINEUPSTREAMANDTHEEQUIPMENT
2EPLACETHEFUSESORRESETTHERELEVANT-#"S
4HEINSTANTANEOUSWATERHEATERISEQUIPPEDWITHANAIRDETECTORWHICHTOTHEGREATESTEXTENT
PREVENTSDAMAGETOTHEHEATINGSYSTEM
)FDURINGOPERATIONAIRISDRAWNINTOTHEINSTANTANEOUSWATERHEATERTHEEQUIPMENTSHUTSDOWN
THEHEATINGLOADFORONEMINUTETHEREBYPROTECTINGTHEEQUIPMENT
s 4APS
n $IRECTDRAWOFFTAPFORINSTANTANEOUSWATERHEATER!$%O7$MONOLEVERMIXERWITH
BATHHANDSHOWERCHANGEOVERPARTNO
4HEINSTALLATIONMAYBECARRIEDOUTUSINGCOMMERCIALLYAVAILABLEPRESSURETESTEDTAPS
&ORTHERMOSTATICPRESSURETESTEDVALVESSEEINFORMATION2ECOMMENDEDADJUSTMENT
s !LWAYSCAREFULLYOBSERVEALLINFORMATIONINTHESEOPERATINGANDINSTALLATIONINSTRUCTIONS
4HESECONTAINIMPORTANTINFORMATIONREGARDINGSAFETYOPERATIONINSTALLATIONANDMAINTENANCEOFTHIS
EQUIPMENT
2.4
Instructions and regulations
s 4HEINSTALLATIONWATERANDELECTRICALWORK ANDCOMMISSIONINGASWELLASTHEMAINTENANCEOFTHIS
equipment, must only be carried out by a qualified contractor in accordance with these instructions.
s 0ERFECTFUNCTIONANDSAFEOPERATIONCANONLYBEASSUREDWHENUSINGORIGINALACCESSORIESANDSPAREPARTS
intended for this equipment.
s /BSERVEALLLOCALLYAPPLICABLEINSTRUCTIONSANDREGULATIONSREGARDINGWATERANDELECTRICALCONNECTIONSSUCH
as DIN VDE 0100, DIN 1988, EN 806, DIN 4109, DIN 44851.
!
For contractors
2. Installation
instructions
