DDLE LCD 182124 - Boiler AEG - Free user manual and instructions

Product type	Electronic instantaneous water heater
Brand	AEG
Model	DDLE LCD 182124 (DDLE LCD 18/21/24)
Dimensions (H x W x D)	485 x 226 x 93 mm
Weight	3.6 kg
Electrical supply	3/PE 380-415 V, 50/60 Hz
Connected load	16.2 to 27 kW depending on configuration
Temperature range	30 °C to 60 °C (continuously adjustable)
Minimum flow rate for activation	2.5 l/min
Hot water capacity (at 38 °C)	Up to 21.4 l/min depending on voltage and inlet temperature
Maximum admissible pressure	1 MPa (10 bar)
Maximum water inlet temperature	65 °C (45 °C for supplementary heating)
Protection rating	IP25 (IP24 with bottom connection)
Energy efficiency class	A
Annual electricity consumption	477-481 kWh
Sound power level	15 dB(A)
Heating system	Bare wire with synthetic sheath, resistant to limescale
Main functions	Electronic regulation, automatic power adjustment, temperature display, air detection, anti-scalding safety (display turns red >43 °C)
Maintenance and cleaning	Clean with a damp cloth; descale tap nozzles if necessary
Safety	Safety pressure switch, safety limiter, splash water protection (IP25), all-pole isolation, instructions for children and persons with reduced capabilities
Spare parts and repairability	Use only original accessories and parts; replaceable electronic system
General information	100-page user and installation manual; warranty according to country of sale conditions

Frequently Asked Questions - DDLE LCD 182124 AEG

How to adjust the water temperature?

Turn the temperature adjustment knob on the device. The selected temperature is displayed. Above 43 °C, the display changes from blue to red to indicate a burn hazard.

What to do if the device does not heat?

First check the fuses in the electrical panel. Make sure the water flow rate is above 2.5 l/min. If the problem persists, refer to the troubleshooting table in the manual.

How to purge the device after a water cut-off?

Disconnect the device from power (turn off fuses). Open the hot water tap for one minute to purge the device and the cold water supply line. Then restore power.

What is the default connected load and how to change it?

At delivery, the device is set to 21 kW. To change the power, move the coding bridge on the terminal block according to the desired power (18, 21, or 24 kW). Check the selected power on the rating plate.

How to clean the device?

Use a damp cloth to clean the exterior. Do not use abrasive or solvent-based products. For taps, descale the nozzles with a commercial descaler if necessary.

What is the maximum water outlet temperature?

The adjustable temperature ranges from 30 °C to 60 °C. However, under normal operation, if the temperature exceeds 43 °C, the display turns red to warn of burn risk.

Can the device be installed under a sink?

Yes, the device is suitable for under-sink or over-sink installation. For under-sink installation, use the optional tube kit designed for this purpose. Follow the specific installation instructions in the manual.

What do the diagnostic LED indicators mean?

Flashing green: device powered on. Steady yellow: heating mode. Steady red: fault. Refer to the troubleshooting table in the manual to interpret combinations.

How to drain the device for winter?

Close the cold water stop valve. Open all draw-off taps. Disconnect the hydraulic connections. The device still contains some water; protect it from frost.

What is the energy class of this water heater?

This instantaneous water heater is rated A for energy efficiency with an annual consumption of about 477 kWh and an efficiency of 39%.

USER MANUAL DDLE LCD 182124 AEG

Electronically controlled instantaneous water heater

Operating and installation instructions 18

1. General information 19
2. Safety 19
3. Appliance description 20
4. Settings 20
5. Cleaning, care and maintenance 20
6. Troubleshooting 20

INSTALLATION

1. Safety 21
2. Appliance description 21 9. Preparations 21
3. Installation 22
4. Commissioning 26
5. Shutting down 26
6. Troubleshooting 26
7. Maintenance 27
8. Specification 28

GUARANTEE

ENVIRONMENT AND RECYCLING

SPECIAL INFORMATION

• The appliance may be used by children aged 8 and up and persons with reduced physical, sensory or mental capabilities or a lack of experience and know-how, provided that they are supervised or they have been instructed on how to use the appliance safely and have understood the resulting risks. Children must never play with the appliance. Children must never clean the appliance or perform user maintenance unless they are supervised.
• Risk of scalding: The tap can reach temperatures in excess of 60°C.
• Ensure the appliance can be separated from the power supply by an isolator that disconnects all poles with at least 3 mm contact separation.
• Secure the appliance as described in chapter "Installation / Installation".
• Observe the maximum permissible pressure (see chapter "Specification / Data table").
• Drain the appliance as described in chapter "Installation / Maintenance / Draining the appliance".

OPERATION

1. General information

The chapters "Special Information" and "Operation" are intended for both the user and qualified contractors.

The chapter "Installation" is intended for qualified contractors.

Note: Read these instructions carefully before using the appliance and retain them for future reference. Pass on the instructions to a new user if required.

1.1 Safety instructions

1.1.1 Structure of safety instructions

KEYWORD Type of risk Here, possible consequences are listed that may result from failure to observe the safety instructions. Steps to prevent the risk are listed.

1.1.2 Symbols, type of risk

Symbol Type of risk
!	Injury
	Electrocution
	Burns (burns, scalding)

1.1.3 Keywords

KEYWORD	Meaning
DANGER	Failure to observe this information will result in seri-ous injury or death.
WARNING	Failure to observe this information may result in seri-ous injury or death.
CAUTION	Failure to observe this information may result in non-serious or minor injury.

1.2 Other symbols in this documentation

Note: General information is identified by the symbol shown on the left.

» Read these texts carefully.

Symbol Meaning
!	Material losses (appliance damage, consequential losses and environ-mental pollution)
	Appliance disposal

» This symbol indicates that you have to do something. The action you need to take is described step by step.

1.3 Units of measurement

Note:

All measurements are given in mm unless stated otherwise.

2. Safety

2.1 Intended use

This appliance is intended for domestic use. It can be used safely by untrained persons. The appliance can also be used in a non-domestic environment, e.g. in a small business, as long as it is used in the same way.

This pressurised appliance is suitable for heating domestic hot water or for reheating preheated water. The appliance can supply one or more draw-off points.

Any other use beyond that described shall be deemed inappropriate. Observation of these instructions and of instructions for any accessories used is also part of the correct use of this appliance.

2.2 General safety instructions

CAUTION Burns

During operation, the tap can reach temperatures in excess of 60°C. There is a risk of scalding at outlet temperatures in excess of 43°C.

CAUTION Burns

If operating with preheated water, e.g. from a solar thermal system, the DHW temperature may vary from the selected set temperature.

WARNING Injury

The appliance may be used by children aged 8 and up and persons with reduced physical, sensory or mental capabilities or a lack of experience and know-how, provided that they are supervised or they have been instructed on how to use the appliance safely and have understood the resulting risks. Children must never play with the appliance. Children must never clean the appliance or perform user maintenance unless they are supervised.

Where children or persons with limited physical, sensory or mental abilities are allowed to use this appliance, we recommend a permanent temperature limit. A qualified contractor can set the limit for you.

Material losses

Protect the appliance and its tap against frost.

2.3 CE designation

The CE designation shows that the appliance meets all essential requirements according to the:

Low Voltage Directive

Electromagnetic Compatibility Directive. The maximum permissible mains impedance is indicated in chapter "Specification".

2.4 Test symbols

See type plate on the appliance.

Country-specific approvals and certifications: Germany

A general test certificate as verification of suitability regarding noise emissions has been issued for this appliance, based on the State Building Regulations [Germany].

3. Appliance description

The electronically controlled instantaneous water heater with automatic output matching keeps the outlet temperature constant up to the output limit. The temperature is then selected via the draw-off tap.

Heating system

The bare wire heating system has a pressure-tested plastic casing. The heating system is suitable for hard and soft water areas; it has low susceptibility to scale build-up. This system ensures rapid and efficient DHW availability.

Note

The appliance is equipped with an air detector that largely prevents damage to the heating system. If, during operation, air is drawn into the appliance, the appliance shuts down for one minute, thereby protecting the heating system.

4. Settings

The DHW outlet temperature can be variably adjusted. The selected temperature is displayed. At temperatures over 43°C, the colour of the display changes from blue to red to indicate a risk of scalding.

Turn the temperature selector to the required temperature.

Note

If the outlet temperature is not sufficiently high when the draw-off valve is fully open and the temperature selector is set to maximum, then more water is flowing through the appliance than can be heated by the heating system (appliance is at its output limit).

» Reduce the water volume at the draw-off valve.

Recommended setting for operation with a thermostatic valve

Set the temperature at the appliance to the maximum temperature.

Following an interruption of the water supply

Material losses

Following an interruption of the water supply the appliance must be recommissioned by carrying out the following steps, in order to prevent the destruction of the bare wire heating system.

» Disconnect the appliance from the power supply by removing the fuses/tripping the MCBs.

Open the tap for one minute until the appliance and its upstream cold water inlet line are free of air. Switch the mains power back ON again.

5. Cleaning, care and maintenance

Never use abrasive or corrosive cleaning agents. A damp cloth is sufficient for cleaning the appliance. » Check the taps regularly. Limescale deposits at the spouts can be removed using commercially available descaling agents.

6. Troubleshooting

Problem Cause Remedy
The appliance will not start despite the DHW valve being fully open.	There is no power. Check the fuses/ MCBs in your fuse box/distribution panel.
	The flow rate is too low. The aerator in the tap or the shower head is scaled up or contaminated.	Clean and/or descale the aerator or shower head.
Required tempera-ture > 45 °C is not achieved.	The water supply has been interrupted.	Vent the appliance and the cold water inlet line (see chapter "Settings").
The cold water	inlet temperature is > 45 °C.	Reduce the cold water inlet temperature.

If you cannot remedy the fault, notify your qualified contractor. To facilitate and speed up your enquiry, please provide the serial number from the type plate (000000-0000-0000):

D0000041614

INSTALLATION

7. Safety

Only a qualified contractor should carry out installation, commissioning, maintenance and repair of the appliance.

7.1 General safety instructions

We guarantee trouble-free function and operational reliability only if original accessories and spare parts intended for the appliance are used.

Material losses

Observe the maximum inlet temperature. Higher temperatures may damage the appliance. You can limit the maximum inlet temperature by installing a central thermostatic valve.

7.2 Instructions, standards and regulations

Note

Observe all applicable national and regional regulations and instructions.

The protection rating IP 25 (hoseproof) can only be ensured with a correctly fitted cable grommet.

• The specific electrical resistance of the water must not fall below that stated on the type plate. In a linked water network, observe the lowest electrical water resistance (see chapter "Specification / Application areas / Conversion table"). Your water supply utility will advise you of the specific electrical water resistance or conductivity.

8. Appliance description

8.1 Standard delivery

The following are delivered with the appliance:

• Wall mounting bracket
• Threaded studs, screws and rawl plugs for the wall mounting bracket. Installation template. 2 twin connectors (cold water with shut-off valve). Flat gaskets. Cable grommet (power cable from above/below).
• Screws/rawl plugs for fixing the back panel in the case of water connection on finished walls.

8.2 Accessories

Tap

ADEo 70 WD bath pressure tap

Installation accessories

Pipe assembly, undersink installation UT 104, connections: finished walls, G 3/8, top. Water connections with 12 mm compression fittings.

Universal mounting frame

Mounting frame with electrical connections.

Pipe assembly for undersink appliances

This assembly for undersink installation is required if you need to have the water connections (G 3/8) above the appliance.

Pipe assembly for offset installation

This pipe assembly with pipe bends is required if you need to have the appliance vertically offset against the water connection by approx. 90 mm downwards.

Pipe assembly for replacing a gas water heater

This pipe assembly is required if the installation has existing gas water heater connections (cold water connection on the left and DHW connection on the right).

Load shedding relay (LR 1-A)

The load shedding relay for installation in the distribution board provides priority control for the instantaneous water heater when other appliances, such as electric storage heaters, are simultaneously being operated.

ZTA 3/4 - central thermostatic valve

Thermostatic valve for central premixing, for example for an instantaneous water heater with a solar thermal system.

9. Preparations

9.1 Installation site

Material losses

Install the appliance in a room free from the risk of frost.

» Always install the appliance vertically near the drawoff point.

The appliance is suitable for undersink and oversink installations.

Undersink installation

Oversink installation

Mount the appliance on the wall. The wall must have a sufficient load-bearing capacity.

9.2 Water installation

A safety valve is not required. Flush the water line thoroughly.

Ensure that the flow rate (see chapter "Specification / Data table", On) for switching on the appliance is achieved. If the flow rate is not achieved, remove the flow limiter (see chapter "Installation / Removing the flow limiter"). Increase the mains water pressure if the required flow rate is not achieved with the draw-off valve fully opened.

Taps

Use appropriate pressure taps. Open taps are not permitted.

Note

Never use the shut-off valve in the cold water inlet to reduce the flow rate. It is intended to shut off the appliance.

Permissible water pipe materials

Cold water inlet pipe: Galvanised steel pipe, stainless steel pipe, copper pipe or plastic pipe. DHW outlet pipe: Stainless steel pipe, copper pipe or plastic pipe.

Material losses

If plastic pipework systems are used, take into account the maximum inlet temperature and the maximum pressure (see chapter "Specification / Data table").

Flexible water connection lines

If the appliance is installed with flexible water connection lines, ensure that the bayonet fittings of the pipe bends do not become twisted inside the appliance. Secure the back panel at the bottom with two additional screws.

10. Installation

10.1 Standard installation

• Electrical connection from above; installation on unfinished walls. Water connection, installation on unfinished walls.
• DDLE LCD 18/21/24: Connected load 21 kW preset

For further installation options, see chapter "Installation alternatives":

• Electrical connection from below on unfinished walls
• Electrical connection for finished walls
• Connecting a load shedding relay
• Undersink installation, water connections - from above. Water installation for finished walls. Operation with preheated water. Temperature limit.

Opening the appliance

Open the appliance by releasing the snap lock. 26_02_02_0762. Remove the back panel by pressing the two locking hooks and pulling the lower part of the back panel forwards.

Preparing the power cable

Fitting the wall mounting bracket 26.02.02.0972. Mark out the holes for drilling with the installation template. If the appliance is to be installed with water connections on finished walls, also mark out the fixing holes on the lower part of the template.

Drill the holes and secure the wall mounting bracket with 2 screws and 2 rawl plugs (screws and rawl plugs are part of the standard delivery).

Fit the threaded stud provided. Mount the wall mounting bracket.

Fitting the cable grommet

Fit the cable grommet. In the case of a connecting cable larger than 6 mm², enlarge the hole in the cable grommet.

Making the water connection

Material losses

Carry out all water connection and installation work in accordance with regulations.

Seal and insert the twin connectors.

Material losses

Never use the shut-off valve in the cold water inlet to reduce the flow rate.

Preparing the back panel

Material losses

If you break out the wrong knock-out by mistake, you should use a new back panel.

Break out the cable grommet knock-out in the back panel. Deburr the sharp edges with a file if necessary.

Installing the appliance

Push the back panel over the threaded stud and the cable grommet. Pull the cable grommet by the locking hooks into the back panel using pliers, until both locking hooks audibly click into place. Remove the transport plugs from the water connections. Press the back panel firmly into place and lock the fixing toggle by turning it clockwise through 90 degrees.

Screw the water connection pipes with flat gaskets on to the twin connectors.

Material losses

The strainer must be fitted for the appliance to function. When replacing an appliance, check whether the strainer is installed (see chapter "Maintenance").

Removing/replacing the flow limiter

Note: If you

If you use a thermostatic valve, the flow limiter must not be removed.

1 Plastic profile washer 2 Flow limiter

Remove the flow limiter and refit the plastic profile washer.

DDLE LCD 18/21/24: Replacing the flow limiter

If 24 kW connected load has been selected, replace the fitted flow limiter (white) with the flow limiter supplied (orange, fixed to the cold water pipe).

Making the electrical connection

WARNING Electrocution

Carry out all electrical connection and installation work in accordance with relevant regulations.

WARNING Electrocution

Connection to the power supply is only permissible in the form of a permanent connection in conjunction with the removable cable grommet. Ensure the appliance can be separated from the power supply by an isolator that disconnects all poles with at least 3 mm contact separation.

WARNING Electrocution

Ensure that the appliance is earthed.

Material losses

Observe the type plate. The specified voltage must match the mains voltage.

Connect the power cable to the mains terminal (see chapter "Specification / Wiring diagram").

DDLE LCD 18/21/24: Re-plugging the coding card

In its delivered condition, the appliance is plugged to 21 kW. When changing to a different connected load, carry out the following steps:

Re-plug the coding card according to the selected connected load (for selectable connected load and fuse protection of the appliance, see “Specification / Data table”).

Tick the selected connected load on the type plate. Please use a ballpoint pen to do this.

Fitting lower section of back panel

Fit the lower part of the back panel into the back panel and click into place. Align the mounted appliance by loosening the fixing toggle, aligning the power supply and back panel, and then re-tightening the fixing toggle. If the back panel of the appliance is not flush, the appliance can be secured at the bottom with two additional screws.

10.2 Alternative installation methods

10.2.1 Electrical connection from below on unfinished walls

Fit the cable grommet.

Material losses: If you break out the wrong knock-out by mistake, you should use a new back panel.

Break out the cable grommet knock-out in the back panel. Deburr the sharp edges with a file if necessary.

Reposition the mains terminal in the appliance from the top to the bottom. Push the back panel over the threaded stud and the cable grommet. Pull the cable grommet by the locking hooks into the back panel using pliers, until both locking hooks audibly click into place. Press the back panel firmly into place and lock the fixing toggle by turning it clockwise through 90°.

10.2.2 Electrical connection for finished walls

Note

This type of connection changes the protection rating of the appliance.

Change the type plate. Cross out "IP 25" and mark the box "IP 24". Please use a ballpoint pen to do this.

Material losses

If you break out the wrong knock-out by mistake, you should use a new back panel.

Cut or break out the required entries in the back panel cleanly (for positions, see chapter "Specification / Dimensions and connections"). Deburr the sharp edges with a file if necessary. Route the power cable through the cable grommet and connect it to the mains terminal.

10.2.3 Connecting a load shedding relay

Install a load shedding relay in the distribution board in conjunction with other electric appliances, e.g. electric storage heaters. The relay responds when the instantaneous water heater starts.

Material losses

Connect the phase that switches the load shedding relay to the indicated terminal of the mains terminal in the appliance (see chapter "Specification / Wiring diagram").

10.2.4 Undersink installation, water connections - from above

An undersink installation with water connections from above can be achieved with the additional pipe assembly for undersink appliances. Cleanly break out the water pipe knock-outs in the back panel and fit the pipe set.

10.2.5 Water installation for finished walls

Note

This type of connection changes the protection rating of the appliance.

» Change the type plate. Cross out "IP 25" and mark the box "IP 24". Please use a ballpoint pen to do this.

Fit water plugs with gaskets to seal the connection on unfinished walls.

Fit a suitable pressure tap.

Click the lower part of the back panel into place in the upper part of the back panel. Secure the connection pipes to the appliance. Secure the back panel at the bottom with two additional screws.

Material losses

If you break out the wrong knock-out by mistake, you should use a new back panel.

Cleanly break out the knock-outs in the appliance cover. Deburr the sharp edges with a file if necessary.

Push the lower part of the back panel under the connection pipes of the tap and click the lower part of the back panel into place. Secure the connection pipes to the appliance.

10.2.6 Operation with preheated water

You can limit the maximum inlet temperature by installing a central thermostatic valve.

10.2.7 Temperature limit

CAUTION Burns

If operating with preheated water, the set temperature limit and anti-scalding protection may be ineffective.

In this case, limit the temperature with an upstream central thermostatic valve.

You can set the temperature limit inside the appliance cover to 43°C

Switch the temperature limit to 43°C.

After enabling the temperature limit, you can only select temperatures between 30 and 43°C.

10.3 Completing the installation

Open the shut-off valve in the twin connector or the cold water inlet line.

11. Commissioning

WARNING: Electrocution. Commissioning may only be carried out by a qualified contractor in accordance with safety regulations.

11.1 Initial start-up

Open and close all connected draw-off valves several times, until all air has been vented from the pipework and the appliance. Carry out a tightness check. Enable the safety pressure limiter by firmly pressing the reset button (the appliance is delivered with the safety pressure limiter disabled). Plug the temperature selector cable plug into the PCB. Fit the appliance cover, ensuring it clicks into place. Check that the appliance cover is seated correctly. Switch the mains power ON. Check the function of the appliance.

Appliance handover

Explain the appliance function to users and familiarise them with its operation. Make users aware of potential dangers, especially the risk of scalding. Hand over these instructions.

11.2 Recommissioning

Vent the appliance and the cold water inlet line (see chapter "Settings").

See chapter "Initial start-up".

12. Shutting down

» Isolate all poles of the appliance from the power supply. Drain the appliance (see chapter "Maintenance").

13. Troubleshooting

WARNING Electrocution To test the appliance, it must be supplied with power.

Possible indications of diagnostic traffic light (LED)

Red Illuminates in the event of a fault

Yellow Illuminates during heating mode

Green Flashing: Appliance is supplied with mains power

D0000041794

1 Diagnostic traffic light

Fault / diagnostic traffic light LED display	Cause Remedy
Inadequate flow rate. The strainer in the	appliance is dirty. Clean the strainer.
The set temperature is not achieved.	One phase down.	Check the fuses/MCBs in your fuse box/distribution panel.
The heater does not switch on. Air is defe	ected in the water and heating output is briefly switched off.	The appliance restarts after one minute.
No hot water and no traffic light display.	The MCB/fuse has responded/blown.	Check the fuses/MCBs in your fuse box/distribution panel.
The safety pressure limiter has tripped.	Remove the cause of the fault (e.g. faulty pressure	washer).
		Protect the heating system against overheating by opening a draw-off valve downstream of the appli-ance for one minute. This depressurises and cools down the heating system.
The PCB is faulty. Check the PCB and	replace if required.	Enable the safety pressure limiter at flow pressure by pressing the reset button (see chapter "Commis-sioning").
Traffic light display: Green flashing or constantly ON	The PCB is faulty. Check the PCB and replace if required.
No hot water at a flow rate of > 2.5 l/min.	The flow meter DFE is not plugged in. Plug the flow meter plug back in.
The flow meter plug is faulty.	Check the flow meter and replace it if required.
Traffic light display: Steady yellow light, flashing green light	The high limit safety cut-out has responded or its lead is broken.	Check the high limit safety cut-out and replace it if required.
No hot water at flow rate > 2.5 l/min.
The heating system is faulty.	Check the heating system resistor, and replace it if required.
The PCB is faulty. Check the PCB and	replace if required.
Traffic light display: Yellow constantly on; green flashing	The outlet sensor is unplugged or the lead is bro-ken.	Plug in the outlet sensor or replace it if required.
Traffic light display: Red constantly on; green flashing	The cold water sensor is faulty.	Check the PCB and replace if required.
No hot water Accurate temperature delivery > 45 °C is not reached.	The cold water inlet temperature exceeds 45 °C.	Reduce the cold water inlet temperature to the ap-pliance.
Traffic light display: Red constantly on; green flashing	The outlet sensor is faulty (short circuit).	Check the outlet sensor and replace it if required.

14. Maintenance

WARNING Electrocution Before any work on the appliance, disconnect all poles from the power supply.

Draining the appliance

You can drain the appliance for maintenance work or to protect it from frost.

WARNING Burns Hot water may escape when draining the appliance.

» Close the shut-off valve in the twin connector or the cold water inlet line. » Open all draw-off valves.

Undo the water connections on the appliance. Store the dismantled appliance in a room free from the risk of frost, as water residues remaining inside the appliance can freeze and cause damage.

Cleaning the strainer

If dirty, clean the strainer in the cold water threaded fitting. Close the shut-off valve in the cold water inlet line before removing, cleaning and refitting the strainer.

15. Specification

15.1 Dimensions and connections

b02 Entry electrical cables I
c01 Cold water inlet Male thread G 1/2 A
c06 DHW outlet Male thread G 1/2 A

Alternative connection options

b02	Entry electrical cables I
b03	Entry electrical cables II
b04	Entry electrical cables III

15.2 Wiring diagram 3/PE ~ 380-415 V

1 Heater 2 High limit safety cut-out 3 Safety pressure limiter

Load shedding relay LR 1-A

1 Control cable to the contactor of the second appliance (e.g. electric storage heater). 2 Control contact opens when switching the instantaneous water heater on.

15.3 DHW output

DHW output is subject to the mains voltage, the appliance's connected load and the cold water inlet temperature. The rated voltage and rated output can be found on the type plate (see chapter "Troubleshooting").

Specific electrical resistance and specific electrical conductivity (see chapter "Data table").

Standard specifica- tion at 15 °C			20 °C			25 °C
Re-sist- ance ρ	Conductivity σ		Re-sist- ance ρ	Conductivity σ		Re-sist- ance ρ	Conductivity σ
Ωcm	mS/m	μS/cm	Ωcm	mS/m	μS/cm	Ωcm	mS/m	μS/cm
900	111	1111	800	125	1250	735	136	1361
1000	100	1000	890	112	1124	815	123	1227
1100	91	909	970	103	1031	895	112	1117
1200	83	833	1070	93	935	985	102	1015
1300	77	769	1175	85	851	1072	93	933

15.5 Pressure drop

Taps

Pressure drop at taps at flow rate of 10 l/min
Mono lever mixer tap, approx.	MPa	0,04 - 0,08
Thermostatic valve, approx.	MPa	0,03 - 0,05
Hand shower, approx.	MPa	0,03 - 0,15

Sizing the pipework

When calculating the size of the pipework, a pressure drop for the appliance of 0.1 MPa is recommended.

15.6 Fault conditions

In case of faults, loads up to a maximum of 95°C at a pressure of 1.2 MPa can occur temporarily in the installation.

15.7 Details on energy consumption

Product data complies with EU regulations relating to the Directive on the ecodesign of energy related products (ErP).

		DDLE LCD 18	DDLE LCD 18/21/24	DDLE LCD 27
		222392	222394	222395
Manufacturer		AEG Haustechnik	AEG Haustechnik	AEG Haustechnik
Load profile		S	S	S
Energy efficiency category		A	A	A
Annual power consumption	kWh	477	477	481
Energy conversion efficiency	%	39	39	39
Default temperature setting	°C	60	60	60
Sound power level	dB(A)	15	15	15
Special information on measuring efficiency		None	Information at Pmax.	None

15.8 Data table

DDLE LCD 18 DDLE LCD 18/21/24 DDLE LCD 27
222392 222394 222395
Electrical data
Rated voltage	V	380	400	415	380	400	415	380	400
Rated output	kW	16.2	18	19.4	16.2/19/21.7	18/21/24	19.4/22.6/25.8	24.4	27
Rated current	A	24.7	26	27	27.6/29.5/33.3	29/31/35	30.1/32.2/36.3	37.1	39
MCB/fuse rating	A	25	25	32	32/32/35	32/32/35	32/32/35	40	40
Phases		3/PE			3/PE			3/PE
Frequency	Hz	50/60	50/60	50/-	50/60	50/60	50/-	50/60	50/60
Specific resistance ρ15≥ (at ∅cold ≤25 °C)	Ω cm	900	900	1000	900	900	1000	900	900
Specific conductivity σ15≤ (at ∅cold ≤25 °C)	μS/cm	1111	1111	1000	1111	1111	1000	1111	1111
Specific resistance ρ15≥ (at ∅cold ≤45°C)	Ω cm	1200	1200	1300	1200	1200	1300	1200	1200
Specific conductivity σ15≤ (at ∅cold ≤45°C)	μS/cm	830	830	770	830	830	770	830	830
Max. mains impedance at 50 Hz	Ω	0.379	0.360	0.347	0.284	0.270	0.260	0.254	0.241
Application limits
Max. permissible pressure	MPa	1			1			1
Max. inlet temperature for reheating	°C	45			45			45
Values
Max. permissible inlet temperature	°C	65			65			65
On	l/min	>2.5			>2.5			>2.5
Flow rate limit at	l/min	8			8 / 8 / 9			9
DHW delivery	l/min	9.4			9.4/11.0/12.6			14.2
Δθ on delivery	K	26			26			26
Hydraulic data
Nominal capacity	I	0.4			0.4			0.4
Versions
Temperature setting range	°C	30-60			30-60			30-60
Heating system heat generator		Bare wire			Bare wire			Bare wire
Colour		white			white			white
IP rating		IP25			IP25			IP25
Dimensions
Height	mm	485			485			485
Width	mm	226			226			226
Depth	mm	93			93			93
Weights
Weight	kg	3.6			3.6			3.6

Guarantee

The warranty conditions of our German companies do not apply to appliances acquired outside of Germany. In countries where our subsidiaries sell our products, it is increasingly the case that warranties can only be issued by those subsidiaries. Such warranties are only granted if the subsidiary has issued its own terms of warranty. No other warranty will be granted.

We shall not provide any warranty for appliances acquired in countries where we have no subsidiary to sell our products. This will not affect warranties issued by any importers.

Environment and recycling

We would ask you to help protect the environment. After use, dispose of the various materials in accordance with national regulations.

Unless otherwise specified, all dimensions are given in millimeters.

2. Safety instructions

2.1 Intended use

The appliance is intended for household use. The user does not need to undergo training for safe operation. The appliance can be used not only in the household, but also, for example, in small businesses, provided the same operating conditions are observed.

The appliance is a flow-type device intended for heating tap water or for additional heating of previously heated water. The appliance can provide one or several draw-off points.

Any other use not specified in this manual is considered use not in accordance with the intended purpose. Use in accordance with the intended purpose includes compliance with the requirements of this manual, as well as the manuals for the accessories used.

2.2 General safety instructions

CAUTION! Burn hazard!

During operation, the fitting may heat up to temperatures above 60°C.

At an outlet water temperature above 43°C, there is a risk of scalding.

CAUTION! Burn hazard!

In operating mode with preheated water, for example from a solar heating system, the temperature of the prepared hot water may deviate from the set temperature.

WARNING! Injury hazard!

Children over 8 years of age, as well as persons with reduced physical, sensory or mental capabilities, or those lacking experience and knowledge, may use the appliance only under supervision or after having been instructed in the safe use of the appliance and understanding the potential dangers in case of non-compliance with these rules. Do not allow children to play with the appliance. Children may perform cleaning and user maintenance only under adult supervision.

If the appliance is used by persons with reduced physical, sensory or mental capabilities, we recommend setting a permanent temperature limit. This setting may only be performed by a specialist.

The device is protected against freezing of the pipes.

2.3 Marking

The marking indicates that the device meets all essential requirements:

Directives for low-voltage equipment, directives on electromagnetic compatibility. The maximum permissible total network resistance is specified in the chapter "Technical characteristics".

2.4 Technical control mark

See the factory plate on the device.

Brazilian conformity

This device complies with the safety requirements of the technical regulations of the Customs Union, subject to the appropriate conformity assessment procedure.

2.5 Technical control mark

See the factory plate on the device.

State permits and certificates: terms

In accordance with construction norms and rules in force, a general certificate has been issued confirming the possibility of using the device from the point of view of noise characteristics.

3. Description of the device

The flow-through water heater with electronic control automatically regulates the heating power, which allows maintaining a constant water temperature at the outlet, taking into account the maximum power of the device. When the maximum power of the device is exceeded, the water temperature is regulated using a water-mixing valve.

Heating system

The heating system with a closed heating element is protected by a sealed plastic housing. The heating system is rigid and durable, as it is practically insensitive to scale formation. The heating system provides fast and efficient supply of hot water.

Note

The device is equipped with an air vent system that prevents damage to the heating system. If air enters the device during operation, the device switches off the heating for one minute, thus protecting its heating system.

4. Settings

The temperature of the hot water at the outlet is regulated steplessly. The set temperature value is displayed on the display. If the temperature exceeds 43°C, the indicator lights up red, warning of the danger of scalding.

» Set the regulator knob to the required temperature.

Note: If the hot water tap is fully open, the temperature is set to the maximum value, but if the water at the outlet is not sufficiently heated, it means that more water is passing through the device than it can heat (the device has reached its maximum power). In this case, it is necessary to reduce the water flow at the draw-off valve.

Note: If the hot water tap is fully open, the temperature is set to the maximum value, but if the water at the outlet is not sufficiently heated, it means that more water is passing through the device than it can heat (the device has reached its maximum power). In this case, it is necessary to reduce the water flow at the draw-off valve.

Recommendations for settings when using a thermostat with the device

Set the temperature regulator knob to the maximum value.

After switching off the water supply

Material damage

After switching off the water supply, it is necessary to switch the device back on, following the steps below to avoid damage to the heating system with the electric element.

Open the shut-off valve. Open the valve for one minute, until the air is completely removed from the cold water supply line in front of the device. Then resume the cold water supply.

6. Troubleshooting

Pipe kit for under-sink installation of the device

The mounting kit for under-sink installation is necessary when the connection pipes (G 1/2 A) must be located above the device.

Pipe kit for installation with offset

This kit consists of a pipe with a pipe elbow and is necessary when a vertical offset of the device of about 90 mm downwards relative to the water connection point is required.

Pipe kit for transition to a gas column

This kit is necessary when, in an already installed system, there are connections for a gas column (type: cold water on the left, hot water on the right).

Load shedding relay (LR 1-A)

The load shedding relay is intended for installation in an electrical distribution board; it ensures priority switching of the instantaneous water heater when it operates simultaneously with, for example, storage electric water heaters.

ZTA 3/4 - central thermostatic mixing valve

The thermostatic mixing valve is intended for central mixing, for example, of water from a instantaneous water heater in a complete installation.

9.2 Plumbing work

Installation of a safety valve is not required. Thoroughly flush the water supply system. It is necessary to ensure that the volume flow (see chapter "Technical characteristics / Parameter table") is sufficient for the device to switch on. If the volume flow remains below the required level, the volume flow limiter must be removed (see chapter "Mounting / Dismounting the volume flow limiter"). If, with the valve fully open, the volume flow remains below the required level for the device to switch on, the pressure in the water supply system must be increased.

Valve

Use shut-off valves. It is forbidden to use drain valves.

Note

The shut-off valve on the cold water supply must not be used to reduce the flow! It leads to blocking of the device.

Permitted materials for water pipes

For cold water supply: pipe made of galvanized steel, stainless steel, copper or plastic. For hot water: pipe made of stainless steel, copper or plastic.

Material of the heat exchanger

When using plastic pipes, it is necessary to take into account the maximum temperature and maximum permissible pressure (see chapter (Technical characteristics / Parameter table)).

Flexible hoses for water supply

When connecting the device with flexible hoses, it is necessary to prevent twisting of the threaded connections and pipe bends. Secure the union nut, fixing it with two additional screws.

10. Installation

10.1 Standard installation

Electrical connection from above, concealed wire. Connection to the network, concealed wire. LCD 18/21/24: power consumption at factory setting 21 kW

Other installation options see chapter "Installation variants"

Electrical connection from below, with concealed installation. Electrical connection with exposed installation. Connection of the load shedding relay. Installation at the bottom - pipes for connection of water from above. Plumbing work by open installation method. Work must be carried out with prior heating of the temperature limiter.

Opening the device

Remove the device, release the fixator latch

To remove the latch, press both fixator hooks and pull the lower part of the latch forward.

Preparing the network connection cable

Installing the wall mounting plate

Mark the holes using the mounting template. When connecting the device to an open water supply, additionally mark the fixing holes in the lower part of the template.

Drill the holes and secure the wall mounting plate using 2 screws and 2 dowels (screws and dowels are included in the delivery set).

Install the supplied threaded plug. Then install the wall mounting plate.

Installing the cable bushing

Install the cable bushing. If the cable cross-section exceeds 6 mm, the hole in the cable bushing must be enlarged.

Connecting the device to the water supply system

Material consumption

All work on connecting water and installing the device must be carried out in accordance with the instructions.

Remove the protective film from the device.

Material damage

Do not use the plug to reduce the flow!

Preparing the wall opening

Material damage

If the wrong hole for the cable duct was accidentally broken out, a new wall opening must be used!

D0000041893

Break out the place for the cable bushing in the marked opening on the rear wall. If there are sharp edges, they must be smoothed with a file.

Installing the device

D0000041894

Press the cable bushing into the opening. Pull the cable bushing with flat pliers to the retainer on the rear wall so that the retainer engages with the protruding tab. Then insert the protective caps for water. Press the rear panel firmly against the wall, fix the panel with the help of the tensioning wrench by turning it 90° to the right.

Connect the pipes with flat seals to the double nipples.

Material damage

For the device to work, a mains filter must be installed.

Before replacing the device, check the mains filter (see chapter "Maintenance").

dEmontax / replacement of the volume flow limiter

Instructions for use

When using the thermostat, the volume flow limiter dEmontax must not be removed.

Profile plastic washer of the volume flow limiter

Remove the volume flow limiter and install the profile plastic washer.

DDLE LCD 18/21/24: Replacement of the volume flow limiter

When choosing a power of 24 kW, the installed flow limiter (white) must be replaced with the flow limiter from the delivery set (orange color, attached to the cold water pipe).

Connection to the power supply

Warning! Electric shock

All electrical connection and installation work must be carried out in accordance with the instructions.

Warning! Electric shock! Connection to the power supply is only allowed in a permanent installation and with a cable gland. The device must be disconnected from the power supply with a contact gap of at least 3 mm on all poles.

Warning! Electric shock! Check the connection of the device to the protective conductor.

Material damage. The data must be collected from the nameplate. The mains voltage must match the voltage indicated on the nameplate.

Connect the power supply cable to the terminal block (see chapter "Technical data / Electrical diagram").

DDLE LCD 18/21/24: Switching the flow switch

The supply state of the copier is set to 21 kW. To switch to another power consumption, the following steps must be performed:

Set the copier to the position corresponding to the selected power (see the power selection in the circuit breaker of the device. In the chapter "Technical Characteristics / Parameter Table"). Mark the selected power with a cross on the factory plate. When doing this, use a ballpoint pen.

Installation of the lower part of the rear panel

Install the lower part of the rear panel and snap it into the rear panel. Align the installed device by loosening the mounting screws, aligning the electrical connection and the rear wall, then tighten the mounting screws again. If the rear panel does not fit against the wall, the lower part of the device can be secured with two additional screws.

10.2 Alternative installation

10.2.1 Electrical connection for concealed mounting

Install the cable bushing.

Material requirement

If by mistake the wrong hole for the cable bushing was drilled, a new wall plate must be used!

Break out the specified opening for the cable bushing on the rear wall. If there are sharp edges, they must be carefully smoothed with a file.

Move the electrical connection terminal from the top of the device to the bottom. Press the device against the wall onto the pins and the cable bushing. Fasten the cable bushing to the bracket on the rear wall with screws so that both brackets engage with the full ring. Press the rear panel firmly against the wall, fix the panel with the locking screw by turning it 90° clockwise.

10.2.2 Electrical connection for surface-mounted installation

Instruction

With this connection method, the degree of protection of the device changes.

Change the data on the factory plate. Cross out the marking "IP 25" and mark the box "IP 24" with a cross. Then use a ballpoint pen.

Material damage

If the wrong hole for the cable bushing was drilled by mistake, a new rear wall must be used!

On the rear wall of the device, carefully make the necessary feed-through holes (their position is shown in the chapter "Technical data / Dimensions and connections"). If there are burrs on the edges, they must be carefully removed with a file. Route the cables through the cable bushing and connect it to the terminal block of the mains.

10.2.3 Connection of the load shedding relay

The load shedding relay in the electrical distribution board must be used together with other electrical appliances, for example, with electric storage water heaters. Load shedding is carried out during the operation of the instantaneous water heater.

Material damage

Connect the phase to which the load shedding relay is installed to the terminal block of the mains in the device (see chapter "Technical data / Electrical diagrams and connections").

10.2.4 Installation with top water connections

Installation of the device on a washbasin with top water connections is carried out using the additional pipe set for installation of the device on a washbasin. Carefully make the feed-through holes for the pipes on the rear panel and install the pipes from the set.

10.2.5 Installation work using the open installation method

Note

With this connection method, the degree of protection of the device changes.

Change the data on the factory plate. Cross out the marking "IP 25" and mark the box "IP 24" with a cross. Then use a ballpoint pen.

After completing the installation, install the plugs with seals. Perform the installation in accordance with the corresponding shut-off valve.

Install the lower part of the rear panel under the upper part and secure it. Connect the connecting pipes to the device. Secure the rear panel, fixing it from below with two additional screws.

Material damage

If by mistake the wrong hole was drilled for the cable bushing, it is necessary to use a new rear panel!

Carefully break out the required openings in the device cover. If sharp edges are present, they must be smoothed with a file.

Install the lower part of the rear panel under the connecting pipes of the valve and fix it in the rear panel. Connect the connecting pipes to the device.

10.2.6 Operating mode with preheated water

When installing the central thermostatic valve, the maximum water temperature is limited.

10.2.7 Temperature limiter

CAUTION! Risk of scalding!

In operating mode with preheated water, the temperature limiter system is protected against scalding and may be ineffective.

In this case, the limitation is set by the pre-adjusted central thermostatic valve.

On the inside of the device cover, a temperature limit of 43 °C can be set.

Set the temperature limit to 43°C.

The sequence for setting the temperature limit: the temperature can only be selected in the range from 0 to 43°C.

10.3 Complete the installation

Open the shut-off valves on the inlet and outlet pipes of the cold water supply.

11. Commissioning

WARNING! Risk of electric shock!

The device may only be put into operation by a specialist, provided that the safety rules and regulations are observed.

11.1 First commissioning

on

on

Repeatedly open and close all connected draw-off valves until no more air remains in the water supply and in the device. Then check for leaks. Activate the pressure relief valve by firmly pressing the release button (in the delivery state, the pressure relief valve function is deactivated). Connect the temperature regulator to the electrical connection block. Install the device cover and fasten it with the chain. Check the position of the device cover. Apply the mains voltage.

Check the operation of the device.

Device cover

Read the user manual before operating the device and familiarize yourself with the rules for using the device.

Warn the user of possible dangers, especially the danger of scalding. Keep this manual.

11.2 Repeated commissioning

Remove air from the device and piping before filling with cold water (see chapter "Settings").

See chapter "First commissioning"

12. Decommissioning

Completely disconnect the device from all contacts. Empty the device, see chapter "Maintenance".

13. Troubleshooting

WARNING! Electric shock

current!

15.1 Dimensions and connections

D0000017757

b02	Ввод дулэл ektrponровдуки |
c01	Повдои xолдунь Вolyы	Hapyжнай pe36ba	G 1/2 A
c06	Быntснай trуба горая вolyы Hapyжнай pe36ba G 1/2 A

Connection options

D0000019778

Cable entry for electrical wiring II b04 Cable entry for electrical wiring II

15.2 Electrical diagram

3/PE ~ 380-415 V

85_02_02_0005

1 Heating element 2 Fuse/thermal limiter 3 Pressure switch

Load shedding relay LR 1-A

85_02_02_0003_

1 Connect to the control circuit of the second device (e.g., electric boiler). 2 The control contact opens when the flow water heater is connected.

15.3 Hot water capacity

Hot water capacity depends on the mains voltage, the power consumed by the device, and the temperature of the incoming water. Data on rated voltage and rated power are given on the nameplate (see section "Troubleshooting").

ПOTреблесья мошноctы, кВТ			38 °C Пожибовитейьнoctь по гору-чey вODE, Л/мен.
Номиналове наразжени temпеса typахолдου Вобны на подау
380 B	400 B	415	B 5 °C	10 °C	15 °C	20 °C
16,2				7,0	8,3	10,1
16,3				7,1	8,3	10,1
	18,0			7,8	9,2	11,2
19,0				8,2	9,7	11,8
			19,4	8,4	9,9	12,0
	21,0			9,1	10,7	13,0
21,7				9,4	11,1	13,5
			22,6	9,8	11,5	14,0
23,5				10,2	12,0	14,6
	24,0			10,4	12,2	14,9
24,4				10,6	12,4	15,2
			25,8	11,2	13,2	16,0
	26,0			11,3	13,3	16,1
	27,0			11,7	13,8	16,8

15.6 Possible malfunctions

In case of malfunctions in the water supply system, short-term maximum loads may occur, accompanied by an increase in temperature up to 95°C and pressure up to 1.2 MPa.

15.7 Energy consumption characteristics

Energy consumption characteristics comply with EU regulations adopted in accordance with the directive establishing requirements for the eco-design of products related to energy consumption (ErP).

Urzhumskaya street 4,

building 2

129343 Moscow

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Switzerland

STIEBEL ELTRON AG

Industrie West

Gass 8

5242 Lupfig

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