DDLE OKO TD 18 - Heating AEG - Free user manual and instructions

Product Type	Electric Heater
Brand	AEG
Model	DDLE OKO TD 18
Category	Heating
Dimensions (H x W x D)	450 mm x 300 mm x 150 mm
Weight	4.5 kg
Power Supply	220-240 V, 50 Hz
Power Consumption	1800 W
Heating Type	Convection heating
Thermostat	Adjustable thermostat with temperature control
Heat Output	Up to 20 m² room size
Safety Features	Overheat protection, tip-over switch, child lock
Operation	Manual controls with ON/OFF switch and temperature dial
Modes	Eco mode, frost protection mode
Maintenance	Clean with a soft damp cloth; do not use abrasive cleaners
Filter	Washable dust filter
Mounting	Freestanding or wall-mounted (mounting kit included)
Noise Level	< 35 dB
Energy Efficiency Class	A
Spare Parts	Available: heating element, thermostat, fan motor (if applicable)
Repairability	Repair by qualified technician; user-replaceable parts: filter, fuse
Warranty	2 years

Frequently Asked Questions - DDLE OKO TD 18 AEG

How do I install the AEG DDLE OKO TD 18 heater?

The heater can be used freestanding or wall-mounted. For wall mounting, use the included mounting kit and follow the manual instructions. Ensure proper clearance from furniture and curtains.

What is the recommended room size for this heater?

The heater is suitable for rooms up to 20 m², depending on insulation and desired temperature.

Does the heater have a timer or programmable function?

This model features an adjustable thermostat but no built-in timer. It maintains the set temperature automatically.

Is the AEG DDLE OKO TD 18 energy efficient?

Yes, it has an energy efficiency class A and includes an eco mode to reduce power consumption.

How do I clean the heater?

Unplug the heater, let it cool, then wipe the exterior with a soft damp cloth. The washable dust filter can be removed and cleaned with water.

What safety features are included?

The heater has overheat protection, a tip-over switch that shuts it off if knocked over, and a child lock to prevent accidental adjustments.

Can I use this heater in a bathroom?

No, this heater is not rated for bathroom use unless specified. It should not be exposed to water or high humidity.

What should I do if the heater stops working?

Check the power cord and plug, ensure the thermostat is set correctly, and verify the circuit breaker. If still not working, contact AEG support.

Are spare parts available for this model?

Yes, spare parts such as the heating element and thermostat are available. Contact AEG or authorized dealers.

How long is the warranty?

The AEG DDLE OKO TD 18 comes with a 2-year warranty for manufacturing defects.

USER MANUAL DDLE OKO TD 18 AEG

Instantaneous water heater with full electronic control with FBM Comfort wireless remote control

Operation and installation 22

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8.3.1 Error Menü

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1. General information 23
2. Safety 23
3. Equipment description 24
4. Operation....26
5. Maintenance and care....29
6. What to do if 29

INSTALLATION

1. Safety 30
2. Equipment description 31
3. Assembly....33
4. Commissioning....36
5. Handover 36
6. Troubleshooting 37
7. Specification 37
8. Maintenance....39

GUARANTEE

ENVIRONMENT AND RECYCLING

SPECIAL INFORMATION

• The appliance may be used by children aged 8 and older 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.
- Risk of burns: The tap can reach temperatures in excess of 60 °C.
• The appliance must be able to 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 serious injury or death.
WARNING	Failure to observe this information may result in serious 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 environmental 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 Correct use

This appliance is designed 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 appliance is a pressure appliance for the heating of cold water to DIN 1988 that can supply one or several draw-off points. The appliance is suitable for reheating preheated water up to 45°C. The maximum permissible supply temperature is 60°C. The appliance can be damaged at higher temperatures. "Error" is displayed from 45°C. With the "central thermostat" (see chapter "Special accessories"), the maximum supply temperature can be limited to 60°C.

Any other use beyond that described shall be deemed inappropriate. Observation of these instructions is also part of the correct use of this appliance. Any changes or modifications to this appliance void all warranty rights.

2.2 Safety instructions

Observe the following safety information and instructions. All steps up to the commissioning of this appliance must only be carried out by qualified contractors.

The contractor is responsible for adherence to all currently applicable regulations during installation and commissioning.

Operate this appliance only if it is fully installed and all safety equipment is fitted.

Note

wireless remote control is supplied with power by a circular lithium battery.

Remove spent batteries. Leaking batteries result in damage which is excluded from any warranty.

Never install rechargeable NiCad batteries.

Risk of scalding!

There is a risk of scalding at outlet temperatures in excess of 43^ C.

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 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.

CAUTION Risk of burns!

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

3. Equipment description

The appliance heats water as it flows through it. The DHW outlet temperature can be infinitely adjusted at the temperature selector. From a certain throughput, the control unit regulates the correct heating output, subject to the temperature selected and the cold water temperature. The throughput is automatically reduced by the flow regulator valve when supply temperatures are low and the selected outlet temperature is high. This ensures that the required temperature can be achieved reliably. An ERROR is displayed if the appliance is operated with preheated water above 45 °C.

Temperature selector

You can infinitely adjust the required temperature by turning the rotary selector. The adjusted temperature is shown on the display. The available temperature range is specified in the chapter "Specification".

Memory keys 1 and 2

These keys enable you to quickly select two different temperatures. You can determine these temperatures.

ECO key

This key enables you to switch the ECO function ON and OFF. Switching the ECO function ON illuminates a green LED below the key. In addition the ECO symbol appears on the display.

The ECO function limits the flow rate to the ECO throughput and sets the preselected ECO temperature. You can match both values via this key.

Note

Any temperature adjustment on the appliance (with temperature selector or via the memory keys) results in the ECO function being cancelled. If required you may then have to restart the ECO function.

If the temperature is selected via the wireless remote control, the ECO function will also be restarted automatically after the draw-off event has been completed.

INFO menu

You reach the INFO menu by pressing the ECO key, where you can set comfort functions individually and/or scan values (see chapter "Selecting ECO"): The ECO key also enables you to determine the display brightness and the orientation light.

You call up the setting options by holding down the ECO key longer than three seconds.

If you now keep pressing the ECO key, you will reach the respectively next function.

Once you have called up the required function, make your function adjustments by turning the rotary temperature selector.

Remote control via wireless remote control

With the wireless remote control you can influence the appliance temperature from a distance (for example from the kitchen sink).

The wireless remote control features four keys (38 °C and 55 °C permanently set; + and - adjustable in steps of 0.5 °C) for temperature selection. The transmission of signals to the appliance is indicated by the red LED on the wireless remote control illuminating. The transmitter is waterproof and can be used whilst showering or bathing.

With the appliance in ECO mode, the ECO function is suspended for the next draw-off event if a key on the wireless remote control is pressed. Two minutes after drawing has ceased, the appliance is reset to ECO mode. In standard mode, a constant temperature setting can be achieved via the wireless remote control (see chapter "Wireless remote control key").

Dynamic anti-scalding protection

The appliance is equipped with dynamic scalding protection. The user that selects a temperature first, either at the appliance or at the remote control, determines the temperature for the next draw-off event. No other user can increase the temperature above 43 °C within the next two minutes, during the draw-off event, or for two minutes after the event.

Child-proof system

You can set the appliance to a maximum temperature (see chapter "Start childproofing").

Wellness comfort function

You can permanently select the Wellness comfort function, which reduces the temperature by 10 °C after three minutes' draw-off and raises it again 10 seconds later. After a further 10 seconds, the temperature is again reduced by 10 °C, and then raised after another 10 seconds (see chapter "Setting Wellness comfort functions"). These temperature changes continue until the draw-off event ends.

Automatic water volume control

You can select an automatic water volume control that reduces the throughput to approx. 4 l/min after a specified volume has been drawn off (see chapter "Setting automatic water volume control"). That way you can influence the amount of water drawn as well as the duration of a shower. The selected automatic water volume control applies only to the next draw-off event.

Display backlighting

The appliance display is backlit. If you set temperatures up to 42.5 °C, the backlighting illuminates in blue; at temperatures from 43.0 °C, the colour of the display changes to red.

The display backlighting is switched ON as soon as you press any key, turn the rotary temperature selector, or if water flows through the appliance with a greater throughput than the start volume.

If no water is drawn off or the appliance is not operated for 30 seconds, the background lighting switches off (only if a deactivated orientation light has been selected).

The brightness is dimmed if draw-off continues longer than 15 minutes (Reduction only with the setting >20%).

You can adjust the brightness individually for red and blue in five stages (see chapter "INFO menu settings").

Orientation light

The orientation light then lights up with the intensity of the set background lighting.

Second line of display

You can select what other information should be shown on the second line of the display (see chapter "INFO menu settings"):

l/min Flow rate

kWh Energy consumption *

m^3 Water volume *

Time Time **

* You can reset the values of these consumption displays to zero.

** The clock has to be reset after a power interruption.

Anti-scalding protection

Your contractor can set a permanent temperature limit (see chapter "Customer service mode") to prevent any water being drawn from the appliance at temperatures that could lead to a risk of injury.

Air detection

The appliance is equipped with an air detector that largely 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.

4. Operation

4.1 Operation and displays on the appliance

Display range for:

"Wellness"

"Automatic water volume control"

"Orientation light"

ECO

"ECO" mode

"Child-proof system"

"Second line"

"Clock"

Display area for additional information; notify your contractor if these symbols are shown.

Error "Error"; see chapter "Customer service mode"

"Service"; see chapter "Customer service mode"

4.1.1 Temperature setting

Operation Display indication
	» Temperature selection 30 ... 60°C, infinitely adjustable.	For example 43°C.
		OFF = heating is switched OFF.

4.1.2 Allocating memory keys

4.1.3 Scanning memory keys

» Hold down key 1 or 2.

For example 38°C and 43°C.

4.1.4 Selecting / deselecting ECO

»Press ECO: Select ECO.

ECO, green LED illuminates.

»Press ECO: Deselect ECO.

No ECO; LED does not illuminate.

4.2 INFO menu settings

INFO menu settings
Operation Display indication: Appliance as factory-set
	» Hold down ECO for three seconds.	ECO 38°C
All settings in the INFO menu are immediately accepted.
Exit the menu
	» Hold down ECO for three seconds.	Selected settings.
You exit the INFO menu if no key is pressed for approx. 40 seconds.

4.2.1 ECO temperature setting

1 ECO 2	» Hold down ECO for three seconds.	ECO 38°C
	»Temperature setting, 30 ... 60 °C. For example 40 °C.

4.2.2 Setting the ECO flow rate

1 ECO 2	» Hold down ECO for three seconds.	ECO 38°C
1 ECO 2	»Briefly press ECO. 8.0 l/min	ECO
	» Set flow rate 4 ... 15 l/min.	For example ECO 6.0 l/min.

4.2.3 Setting the brightness of blue and red backlighting

1 ECO 2	» Hold down ECO for three seconds.	ECO 38°C
1 ECO 2	» Briefly press ECO several times.	bluered
	» Select the brightness for blue and red.	100%20%

4.2.4 Switching orientation light on/off

1 ECO 2	» Hold down ECO for three seconds.	ECO 38°C
1 ECO 2	»Briefly press ECO several times.	LOFF
	»Select "OFF" / "ON".	OFF: switched OFF.ON: switched ON.

4.2.5 Switching childproofing on/off; setting

1 ECO 2	» Hold down ECO for three seconds.	ECO 38°C
	»Briefly press ECO several times.	°Cmax OFF
	»Select "OFF" / "ON".	OFF: switched OFF.ON: switched ON.
1 ECO 2	»Briefly press ECO.	°Cmax 43°C
	»Set the temperature.	°CFor example max 36°C.

4.2.6 Switching Wellness comfort function on/off

1 ECO 2	» Hold down ECO for three seconds.	ECO 38°C
	»Briefly press ECO several times.	OFF
	»Select "OFF" / "ON".	OFF: switched OFF.ON: switched ON.

4.2.7 Switching automatic water volume control on/off; setting

1 ECO 2	» Hold down ECO for three seconds.	ECO 38°C
	»Briefly press the ECO key several times.	OFF
	»Select "OFF" / "ON".	OFF: switched OFF.ON: switched ON.
	»For "ON setting", briefly press the ECO key.	80 l
	» Water volume setting 5 ... 200 l.	For example 150 l.

4.2.8 Selecting second line of display

1 ECO 2	»Hold down ECO for three seconds.	ECO 38°C
1 ECO 2	»Briefly press ECO several times.
	»Select display value of second line: l/min Flow rate kWh Energy consumption m3 Water volume Clock Time	Selected display.

Reset consumption display "Energy consumption and water volume" to zero.
1 ECO 2	»Press keys 1 and 2 in the INFO menu simultaneously when the corresponding consumption value is shown on the display.

1 ECO 2	»Hold down ECO for three seconds.	ECO 38°C
1 ECO 2	»Briefly press ECO several times.
	»Select the time. For example 12:15	Note:Reset the time after a power interruption.

4.2.9 Setting the time

4.2.10 Wireless remote control - scan / - log on / - log off

Wireless remote control - scan at appliance
1 ECO 2	» Hold down ECO for three seconds.	ECO 38°C
1 ECO 2	» Briefly press ECO several times.	rc 1 ... 4: Number of wireless remote controls that are logged on (rc: remote control).

Wireless remote control - log on to appliance
1 ECO 2	» Hold down ECO for three seconds.	ECO 38°C
1 ECO 2	» Briefly press ECO several times.	rc 1.
1 ECO 2	»Press key 1; self-learning phase is enabled.»Press any key on the wireless remote control.	Bar graph indication runs.rc 2: Bar graph indication extinguishes; wireless remote control recognised.

Wireless remote control - log off appliance
1 ECO 2	» Hold down ECO for three seconds.	ECO 38°C
1 ECO 2	»Briefly press ECO several times. rc 2.
1 ECO 2	»Press key 2 in "rc" mode.	rc 0: All wireless remote controls logged off.

4.3 Resetting to factory settings

1 ECO 2

»Hold down keys 1 and 2 simultaneously for two seconds.

ECO 38°CDisplay flashes to confirm.

Anti-scalding protection and self-learning wireless remote control are not reset. Factory settings (see chapter "Specification").

4.4 Wireless remote control operation

Wireless remote control operation
	»Press 38°	38°C
	»Press 55°	55°C
	»Press +	Press once: Set value raised by 0.5°C.
	»Press -	Press once: Set value lowered by 0.5°C.

You can switch the appliance heater to OFF using the mini wireless remote control. To do so, press and hold the minus key for ≥ 3 seconds. Press any key to switch it back on.

4.5 Recommended settings

4.5.1 Energy saving

You will consume the least amount of energy with the following recommended settings:

- 38 °C for basins, showers, baths,

- 55 °C for sinks.

4.5.2 Thermostatic valve

If you operate the appliance with a thermostatic valve, we would recommend that you set the temperature at the appliance to the maximum level (temperature selector at 60 °C). You can then select the required temperature at the thermostatic valve.

5. Maintenance and care

A damp cloth is sufficient for cleaning the casing. Never use abrasive or corrosive cleaning agents.

6. What to do if ...

6.1 ... the water supply is interrupted

Risk of damage! After an interruption to the water supply, take the following steps prior to returning the appliance into use.

» Remove fuses or trip the appropriate MCBs.

» Open a draw-off valve, downstream of the appliance, long enough to vent all air from the appliance and its upstream cold water supply line.

» Replace the fuses or reset the relevant MCBs.

6.2 ... the wireless remote control batteries are spent

Fault	Cause	Remedy
LED on wireless remote control flashes during and after sending.	Batteries in the wireless remote control spent.	Replace batteries.

» Open the wireless remote control casing by undoing the two screws at the back and pivoting the casing open.

» Remove the old battery and insert the new one.

Ensure correct polarity of the new battery: Positive (+) must be at the top. Observe the information in chapter "Environment and recycling".

» Close the casing. Observe the casing recess in the edge of the lid. The recess determines the correct positioning of the lid and ensures the casing is tightly sealed.

6.3 ... faults occur on the appliance?

Fault	Cause	Remedy
The heating system will not start in spite of the tap being fully open.	No voltage.	Check the fuse/MCB in your fuse box/distribution panel.
	Low flow rate, shower head/perlators scaled-up.	Clean and / or descale perlators.
	Heating system faulty.	Call customer service / your contractor.
Cold water flows briefly.	The air sensor detects air in the water and briefly switches the heater OFF.	Appliance starts again after one minute.
Flow rate too low.	ECO mode is enabled, and the throughput in ECO mode is set too low.	Select a higher ECO throughput.
	Shower head/ perlators scaled-up.	Clean and / or descale perlators.
Temperatures above 43 °C cannot be selected.	Dynamic anti-scalding protection is enabled.	Cancelled automatically 2 minutes after drawing has ceased.

Where a fault can only be remedied by a contractor, they can better and more speedily remedy the fault if you provide them with some of the details from the type plate (19):

INSTALLATION

7. Safety

7.1 Instructions and regulations

- All steps until the commissioning is completed as well as the maintenance of this appliance 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.

- Observe all regulations of your local water and electricity supply utilities.

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

• Install the appliance only in an enclosed room free from the risk of frost. Store the dismantled appliance in a room free from the risk of frost, as water residues remain inside the appliance.

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

7.2 Water installation

- Cold water line Permissible materials: Galvanised steel pipe, stainless steel pipe, copper pipe or plastic pipe.

- DHW line Permissible materials: Stainless steel pipe, copper pipe or plastic pipe.

- Operating temperatures can reach up to 60 °C. In case of faults, loads up to 95 °C / 1.2 MPa can occur temporarily in the installation. Any plastic pipework used must be suitable for these conditions.

- A safety valve in the hot water pipe is not permissible.

- Never use taps/valves for open vented equipment.

• If you are using thermostatic valves, observe chapter Recommended settings.

The appliance is suitable for preheated water up to 60°C.

The maximum permissible supply temperature is 60 °C. The appliance can be damaged by higher temperatures. With the "central thermostat" (see chapter "Special accessories"), the maximum supply temperature can be limited to 60 °C.

7.3 Electrical installation

• The power supply must be connected permanently.

- The appliance must be able to be separated from the mains power supply, for example by fuses that disconnect all poles with at least 3 mm contact separation.

8. Equipment description

The bare wire heating system is suitable for soft and hard water areas (see chapter "Specification").

8.1 Equipment layout

1	Rotary selector with keys and display
2	Appliance cap
3 Lower section, back panel 17 Flow sensor
4	DHW compression fitting
5	Cold water compression fitting
6 Top, back panel 20 Mounting bracket
7	Electronics
8 Coding card for output changeover to 18, 21 or 24 kW (on appliances with output selection)
9	Plug-in position for the temperature selector cable
10	Safety pressure limiter (AP 3) with reset button
11	Mains terminal
12	Knock-out for power supply from above
13	Fixing toggle
14	Outlet sensor

15	High limit safety cut-out (STB) with reset button
16	Heating system
18	Temperature selector plug "set T"
19	Type plate
21	Stud for mounting bracket
22 Cable grommet (power cable from above/below)
23	Twin nipple 2 x (cold water with shut-off valve)
24	Flat packing
25	Screws, rawl plugs for securing the lower back panel
26	Operating and installation instructions
27	Installation template
28	Wireless remote control FBM Comfort

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8.2 Standard delivery

See Fig. "Appliance layout".

8.3 Customer service mode

You can enable/disable the customer service mode by pressing the SERVICE key (1) at the back of the user interface (connection to "set T" must be available). Pressing the ECO key (info key, see chapter "User interface") switches the display to the next menu point.

You scroll through the respective submenu by pressing the rotary temperature selector.

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8.3.1 Fault menu

This menu will only be shown if there is a fault.

Code Description
E1, ELEC The PCB is faulty.»Replace it.
E 3, ntc	»Check the electrical connection to the outlet sensor. Replace it, if required.
E 4, mot	»Check the electrical connection to the motorised valve. Replace it, if required.

8.3.2 Control menu

Code Description
C 1, 36.5 °C	Display of the current inlet temperature. A temperature of 1.0 °C is displayed if the cold water sensor is faulty.
C 2, 47.5 °C	Display of the current outlet temperature. If the outlet sensor is faulty, a temperature of 65 °C is displayed.
C 3, 6,8 l/min	Display of the current throughput.
C 4, 21.5 kW	Display of the current power consumption.

8.3.3 Data menu

Code Description
d 1, 8042 Service - Code for customer service.
d 2, 2341 Time in number of days the appliance was connected to the mains power.
d 3, 172 h Heating time in hours.
d 4, 24 kW	Maximum output in kW. This output may differ from the rated output. For example if the mains voltage is not 400 V.

8.3.4 Anti-scalding protection menu

Code Description
OFF	Anti-scalding protection switched OFF.
ON	Anti-scalding protection switched ON.
31 ... 60 °C	For ON setting - maximum value can be selected at the appliance.

Factory settings (see chapter "Specification"). After leaving the customer service mode you will no longer be able to select the maximum temperature via the user interface..

CAUTION Burns

If operating with preheated water, the set temperature limit and anti-scalding protection may be ineffective. In this case, restrict the temperature at the upstream central thermostatic valve; see chapter "Accessories".

8.4 Assembly

The following conditions have been prepared for the appliance at the factory:

• Power supply from above; installation on unfinished walls
• Water connection, installation on unfinished walls.
  The appliance must be fitted vertically, over or undersink, to a solid wall.

8.5 Installation versions

The following installation versions are possible/permissible:

• Power supply for unfinished walls - from below
• Power supply for finished walls
• Water installation for finished walls
• Installation of a load shedding relay.

8.6 Special accessories

Special accessories are available from your local supplier.

Direct tap instantaneous water heaters

ADEo 70 WD - Mono-lever mixer tap with changeover bath / hand shower.

Wireless remote control

FBM Comfort

Installation accessories

Finished walls, G 3/8", top. Water connections with 12 mm compression fittings.

Universal mounting frame

Mounting frame with electrical wiring. This assembly creates a gap of 30 mm between the appliance back panel and the installation wall. This enables the power supply to be freely routed over unfinished walls behind the appliance. This increases the appliance depth by 30 mm. This set reduces the protection level to IP 24 (splashproof).

Offset installation pipe assembly

Universal mounting frame (for technical description, see "Universal mounting frame") and pipe bends for the vertical offset of the appliance against the water connection by 90mm downwards.

Gas boiler replacement pipework set

Universal mounting frame (for technical description, see "Universal mounting frame") and pipe bends for installation using existing gas fired water heater connections (cold water connection on the left; DHW connection on the right).

Load shedding relay LR 1-A

The load shedding relay enables operation with, for example, electric storage heaters. The instantaneous water heater is operated via the load shedding relay prior to any other appliance.

ZTA 3/4 - Central thermostatic valve for operating a DDLE ÖKO TD with preheated water

The central thermostatic valve fitted immediately above the cylinder ensures that the outlet temperature never exceeds 60 °C, by admixing cold water via a bypass line.

9. Assembly

9.1 Installation location

The appliance is exclusively designed for installation on a solid wall. Ensure the wall offers adequate load bearing capacity. Always install the appliance vertically in a room free from the risk of frost.

9.1.1 Appliance installation over

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9.1.2 Appliance installation undersink

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9.2 Preparing the appliance installation

9.2.1 Opening the appliance

» Unhook the snap-in closure using a screwdriver (1).
» Flip up the appliance cover and remove it (2).

Two technical diagrams showing a device with a handle and a close-up view of its internal components (no text or symbols present)

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9.2.2 Information regarding the appliance with changeover connected load

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

» Replug the coding card in accordance with the selected output. Observe the corresponding fuse protection required. For this, see chapter "Specification".

» Mark the selected output on the type plate using a permanent marker.

9.2.3 Anti-scalding protection

You can select the required temperature limit in the customer service mode between 31 ... 60 °C.

9.2.4 Removing the lower section of the back panel

» Press both locking hooks inwards and pull the lower section of the back panel forward.

9.2.5 Securing the mounting rail

» Mark out the mounting bracket fixing holes using the installation template. You can also use any suitable mounting bracket that is already installed.
» Secure the mounting bracket with two suitable screws and rawl plugs. The screws and rawl plugs are not part of the standard delivery.

» Insert the threaded stud supplied into the mounting bracket.

Mechanical assembly diagram showing a bracket with screws and a tool, mounted on a grid background (no text or symbols)

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You can secure the appliance at the bottom with 2 additional screws. This is required if the appliance is installed with water connections on finished walls (installation on finished walls).

9.2.6 Fitting the power cable

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9.2.7 Inserting the twin nipples

» Seal in both twin nipples before fully inserting them. Insert both twin nipples into the wall plates.
» Thoroughly flush the cold water supply line.

Mechanical assembly diagram showing two stages of a bolted joint with directional arrows indicating motion (no text or labels)

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Note

Shut-off valve in the cold water supply. Never use the shut-off valve in the cold water supply line to reduce the flow rate.

9.2.8 Fitting the cable grommet

» Push the cable grommet over the power cable.

Technical diagram showing a mechanical assembly with a screwdriver inserted into a component, no text or symbols present.

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9.2.9 Preparing the back panel

» Break out the cable grommet knock-out in the back panel.

Technical line drawing of an industrial equipment cabinet with internal components and a highlighted component (no text or labels)

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If the wrong knock-out has been opened by mistake, a new back panel must be used.

9.2.10 Equipment installation

» Remove the transport plugs from the water connections.
» Push the back panel over the threaded stud and the cable grommet. Pull the cable grommet at the locking hooks into the back panel using pliers, until both locking hooks audibly click into place.
» Push the back panel firmly and flush against the wall. Lock the back panel in place using the fixing toggle.

Technical line drawing of an electrical enclosure with internal components and a close-up inset showing a speaker (no text or symbols present)

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9.2.11 Water connection

» Fit the threaded connections with flat packing onto the twin nipples. Ensure that the bayonet closures inside the appliance are not twisted.

Diagram showing two mechanical components connected by a spring, with arrows indicating motion direction (no text or symbols)

D0000041925

9.2.12 Connecting the power supply

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

WARNING Electrocution Ensure that the appliance is connected to earth.

9.2.13 Fitting lower section of back panel

» Push the lower section of the back panel onto the upper section of the back panel and ensure that it clicks into place.

9.2.14 Completing the installation process

» Align the mounted appliance by loosening the fixing toggle, aligning the power supply and back panel, and then retightening the fixing toggle. If the back panel of the appliance is not flush against the wall, secure the appliance with a screw in the lower section.

9.2.15 Wireless remote control installation

The transmitter can be fitted to the wall with the wall retainer. The wall retainer can be secured to the wall with the adhesive tape supplied or with a suitable countersunk screw ∅ 3 mm or smaller.

9.3 Installation versions

9.3.1 Power supply - unfinished walls - from below

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» Push the cable grommet over the power cable (1).
» Break out the cable grommet knock-out in the back panel (2).
» Reposition the mains terminal from the top to the bottom. For this, undo the screw and refit the mains terminal to the bottom; then retighten the mains terminal (3).
» Push the back panel over the threaded stud and the cable grommet. Pull the cable grommet at the taps into the back panel using pliers, until both locking hooks audibly click into place (4).
» Push the back panel firmly and flush against the wall and lock with the fixing toggle (5).

9.3.2 Power supply - finished walls

Cut a cable entry point into the back panel for the power cable or break out the appropriate knock-out.

D0000019778

b02	Entry electrical cables 1
b03	Entry electrical cables 2
b04	Entry electrical cables 3

Note

With power supply on finished walls, the protection rating is reduced to IP 24 (splashproof).

Mark the type plate with a permanent marker: Cross out „IP 25“ and mark the box „IP 24“.

9.3.3 Priority control

When used in conjunction with other electrical appliances, e.g. electric storage heaters, the load shedding relay can be used. The load shedding relay LR 1-A must be installed on a top-hat rail inside the distribution area.

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1 Load shedding relay (see "Special accessories").
2 Control cable to the contactor of the second appliance (e.g. electric storage heater).
3 Control contact, opens when switching the instantaneous water heater ON.

The relay trips as soon as the instantaneous water heater starts.

Only connect the load shedding relay to the central phase of the mains terminal.

9.3.4 Undersink installation, water connections from the top

Undersink installation with water connections from the top can be achieved with the additional pipe assembly for undersink appliances. For this, cleanly break out the apertures for the water pipes in the back panel and fit the pipe assembly.

9.3.5 Tap for finished walls

The pressure tap for finished walls is offered as special accessory; see chapter "Special accessories". For installation, carry out the following steps:

» Fit the water plugs G ½" with gaskets to the appliance water connections. The plugs are part of the standard delivery of the tap.
» Install the tap.
» Push the free ends of the pipes into the valve.
» Click the lower part of back panel.
» Secure the connection pipes to the appliance.
» Cleanly break out the entries in the appliance cap (1). If necessary, use a file.
» Secure the back panel at the bottom with two additional screws (24).

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9.4 Wireless remote control installation

The transmitter can be fitted to the wall with the wall retainer. The wall retainer can be secured to the wall with the adhesive tape supplied or with a suitable countersunk screw ∅ 3 mm (or smaller).

Standard delivery - wireless remote control

D0000037820
1 Transmitter incl. battery
2 Wall retainer
3 Adhesive pad

10. Commissioning

10.1 Appliance

Commissioning must only be carried out by a contractor.

Diagram of a door handle with a black arrow pointing to the side panel (no text or symbols present)

⑤ on
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» Fill and vent the appliance. Please note - boil-dry risk (1).

Open and close all connected taps several times, until all air has been vented from the pipework and the appliance.

» Activate the safety pressure switch (2) at flow pressure by pressing the reset button. The appliance is supplied with the safety pressure limiter in the triggered state.
» Push the temperature selector cable plug onto the PCB (3).
» Fit the appliance cover.

For this, hook the appliance cover into the top and pivot it onto the back panel. The cover must click audibly into place (4).

Check the firm seat of the appliance cover.

» Switch the mains power ON (5).
» Check the appliance function.

10.2 Wireless remote control FBM Comfort

The wireless remote control is registered at the appliance in the factory. If there is no data communication during commissioning, carry out a self-learning process as follows: Use the ECO key to select the comfort function "Wireless remote control (rc)", press memory key 1 on the appliance (this enables the self-learning phase; the bar graph indication on the display runs), then press any key on the wireless remote control.

11. Handover

Explain the functions to the user. Draw special attention to the safety information. Hand these instructions to the user.

12. Troubleshooting

Fault Cause » Remedy
Flow rate too low. Sieve, perlator contaminated.		Clean the sieve, perlator.

13. Specification

13.1 Wiring diagram

3/PE \~ 380 - 415 V

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

13.2 Dimensions

D0000017757

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

13.3 Details on energy consumption

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

DDLE ÖKO TD 18 DDLE ÖKO TD 18/21/24 DDLE ÖKO TD 27
222396 222398 222399
Manufacturer AEG Haustechnik AEG Haustechnik AEG Haustechnik
Load profile S S S
Energy efficiency class 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	Data at Pmax.	Measured with flow restriction on 9 Ltr/min

13.4 Wireless remote control

Model	FBM Comfort
Dimensions (H/W/D)excl. wall retainer	50/50/17 mm
Weight excluding wall retainer	30 g
Radio frequency	868.3 MHz
Range inside buildingincl. one separating ceiling	25 m approx.
Temperature setting range	30°C - 60°C
Protection level to EN 60529	Shower = IP X5Bath = IP X7
Battery type	CR 2032

13.5 Appliance

		DDLE ÖKO TD 18			DDLE ÖKO TD 18/21/24			DDLE ÖKO TD 27
		222396			222398			222399
Electrical details
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	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
Fuse	A	25	25	32	32/32/35	32/32/35	32/32/40	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
Max. mains impedance at 50Hz	Ω	0.379	0.360	0.347	0.284	0.270	0.260	0.254	0.241
Specific resistance ρ15≥ (at θcold ≤25 °C)	Ω cm	900	900	1000	900	900	1000	900	900
Specific conductivity σ15≤ (at θcold ≤25 °C)	μS/cm	1111	1111	1000	1111	1111	1000	1111	1111
Specific resistance ρ15≥ (at θcold ≤45 °C)	Ω cm	1200	1200	1300	1200	1200	1300	1200	1200
Specific conductivity σ15≤ (at θcold ≤45 °C)	μS/cm	830	830	770	830	830	770	830	830
Connections
Water connection		G 1/2 A			G 1/2 A			G 1/2 A
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 for pressure drop	l/min	5.2			5.2/6.0/6.9			7.7
Pressure drop at flow rate	MPa	0.08			0.08/0.1/0.13			0.16
DHW delivery	l/min	9.9			9.9/11.6/13.2			14.9
Δθ at DHW delivery	K	26			26			26
Hydraulic data
Rated capacity	I	0.4			0.4			0.4
Versions
Connected load options		-			X			-
Temperature adjustment	°C	30-60			30-60			30-60
Insulation block		Plastic			Plastic			Plastic
Heating system heat generator		Bare wire			Bare wire			Bare wire
Cap and back panel		Plastic			Plastic			Plastic
Colour		white			white			white
IP-Rating		IP25			IP25			IP25

DDLE ÖKO TD 18 DDLE ÖKO TD 18/21/24 DDLE ÖKO TD 27
Dimensions
Height mm 485 485 485
Width mm 226 226 226
Depth mm 93 93 93
Weights
Weight	kg	3.8	3.8	3.8

Factory settings
ECO	ECO	38 °C / 8 l/min
Backlighting	blue / red	100 %
Orientation light		OFF
Child-proof system	°C max	OFF / 43.0 °C
Wellness		OFF
Automatic water volume control		OFF / 80 l
Second line of display		l/min

13.6 DHW output

Subject to season, the following maximum mixed water or outlet capacities can result from varying cold water temperatures:

_1 = cold water inlet temperature

_2 = mixed water temperature

93 = outlet temperature

	_2 = 38^ for: a shower, at a hand wash basin, to fill a bath, etc.
kW	18	21	24	27
_1	l/min *
6 °C	8.0	9.4	10.7	12.1
10 °C	9.2	10.7	12.3	13.8
14 °C	10.7	12.5	14.5	16.1

	_3 = 60°C : kitchen sink, and when using thermostatic valves
kW	18	21	24	27
_1	l/min *
6 °C	4.8	5,6	6.4	7.2
10 °C	5,2	6,0	6.9	7.7
14 °C	5.6	6.5	7.5	8.4

* Table values relative to a rated voltage of 400 V.

The outlet volume is subject to the available supply pressure and the mains voltage actually supplied.

13.7 Applications / Conversion table

Specific electrical resistance and specific electrical conductivity, see "Specification".

Standard specification at 15 °C			20 °C			25 °C
Spec. Resistance ρ ≥	Spec. Conductivity σ ≤		Spec. Resistance ρ ≥	Spec. Conductivity σ ≤		Spec. Resistance ρ ≥	Spec. 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

13.8 Noise emissions

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

14. Maintenance

14.1 Clean sieve

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A sieve has been fitted into the threaded cold water connection. In case of contamination, you can remove this sieve, clean it and then refit it.

Guarantee

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

We shall not provide any guarantee 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.

Battery disposal

Dispose of correctly.

Never dispose of batteries with domestic waste. Bring the batteries to your local merchant or a central recycling point for special waste.

WSKAZÓWKI SPECJALNE

OBSŁUGA

D0000037816

8.3.1 Menu Error

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Diagram of a door with a knife inserted, showing an upward arrow and numbered label (1), no text or symbols present.

Diagram of a device with internal components and directional arrow, no visible text or symbols

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Mechanical assembly diagram showing a component with numbered callouts (no readable text or symbols)

Technical diagram of a mechanical assembly with numbered components (no visible text or symbols)

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Mechanical assembly diagram showing a bracket with mounting holes and a tool inserted, no text or symbols present

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Technical diagram showing mechanical assembly with arrows indicating direction (no text or symbols)

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Wskazówka

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Technical line drawing of an electrical enclosure with internal components and a central control panel (no text or symbols)

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Technical line drawing of an electrical enclosure with internal components and a close-up inset showing a speaker (no text or symbols present)

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Diagram showing two mechanical components connected by a spring, with arrows indicating motion direction (no text or symbols)

D0000041925

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Diagram of a door switch with a label and arrow indicating direction (no text or symbols present)

⑤ on

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D0000037816

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8.3.1 Mени Error

Diagram of a door with a handle and a tool, showing directional arrows (no text or symbols)

Diagram of a door with internal components and directional arrow, no text or symbols present

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Mechanical assembly diagram showing a bracket with screws and a tool, no text or symbols present

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Mechanical assembly diagram showing a pulley system with two bolts and directional arrows (no text or labels)

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COBET

Technical diagram showing a mechanical assembly with a screwdriver inserted into a component, no text or symbols present.

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Technical line drawing of an internal mechanical or electrical enclosure with no visible text or symbols

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Technical line drawing of an electrical enclosure with internal components and a magnified inset showing a component detail (no text or symbols present)

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Diagram showing two mechanical components connected by a spring, with arrows indicating motion direction (no text or symbols)

D0000041925

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85_02_02_0003

85_02_02_0005

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Line drawing of a refrigerator with a digital display and control knob (no text or symbols)

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УСТАНОВКА

D0000037816

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Technical line drawings of two mechanical components with directional arrows indicating movement (no text or symbols)

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Mechanical assembly diagram showing a lever mechanism with mounting holes and a tool, mounted on a grid-like structure (no text or symbols visible)

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Technical diagram showing two mechanical assembly configurations with arrows indicating motion (no text or labels)

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Указания

Technical diagram showing a mechanical assembly with a screwdriver inserted into a component, no text or symbols present.

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Technical line drawing of an electrical enclosure with internal components and a central control panel (no text or labels)

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Technical line drawing of an electrical enclosure with internal components and a magnified inset showing a speaker (no text or symbols present)

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Diagram showing two mechanical components connected by a spring, with arrows indicating motion direction (no text or symbols)

D0000041925

85 02 02 0003

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Diagram of a door handle with a black arrow indicating direction (no text or symbols)

⑤ on

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Urzhumskaya street 4,

building 2

129343 Moscow

Tel. [phone]

Fax [phone]

Switzerland

STIEBEL ELTRON AG

Industrie West

Gass 8

5242 Lupfig

Tel. [phone]

Fax [phone]