1. Introduzione
This manual provides essential information for the safe and efficient installation, operation, and maintenance of your Vaillant VED E 18/8 Electronic Instantaneous Water Heater. Please read these instructions carefully before installation and use, and keep them for future reference.
The Vaillant electronicVED E 18/8 is designed to provide precise hot water comfort for single or multiple draw-off points, with a flow rate of 8 liters per minute. It is suitable for connection points with an 18 kW power supply.

Figura 1: Fronte view of the Vaillant VED E 18/8 Electronic Instantaneous Water Heater.
2. Istruzioni di sicurezza
Importante: Installation of non-plug-in appliances must be carried out by a qualified professional or a registered specialist company. This ensures compliance with local regulations and safety standards. Failure to follow the warning and installation instructions in the provided manual can damage the product and void the warranty.
- Scollegare sempre l'alimentazione prima di eseguire qualsiasi installazione o manutenzione.
- Ensure proper ventilation of the appliance before initial use.
- The appliance must be mounted vertically and within the appropriate protection zone according to DIN 57100/VDE 100 (> 60 cm distance from shower or bathtub area, socket, or sink).
- Adjustable anti-scald protection is integrated for user safety.
3. Installazione
3.1 Disimballaggio e ispezione
Carefully unpack the water heater and inspect it for any damage. The package includes:
- Electronic instantaneous water heater
- Cold water connection (1/2")
- Hot water connection (1/2")
- Foche
- Piastra di montaggio
- Vite centrale
- Modello di montaggio
- Manuale d'uso e installazione
- Scheda tecnica del prodotto
- Etichetta di efficienza energetica
Screws and dowels are not included as they must be selected based on the specific mounting situation.
3.2 Posizione di montaggio
The appliance is designed for vertical wall mounting. Ensure the chosen location complies with DIN 57100/VDE 100 protection zones (e.g., more than 60 cm from showers, bathtubs, sockets, or sinks). Under-sink installation may require additional accessories (article numbers 000479, 0020138088, 308086).

Figura 2: Esample installation of the water heater in a bathroom environment.
3.3 Collegamento elettrico
The Vaillant VED E 18/8 requires a 400 V/50 Hz power supply. For the 18 kW model, a 5-wire connection cable with a cross-section of 6 mm² and a minimum three-phase protection of 32 amperes is required.

Figure 3: Technical requirements for electrical connection. For 18 kW, use 3 x 32 Ampere fuses and a 5 x 6 mm² cable.
3.4 Collegamenti idraulici
Connect the cold water supply to the designated cold water inlet (R 1/2") and the hot water outlet to the hot water pipe (R 1/2"). Ensure all connections are sealed properly using the provided gaskets. The unit is compatible with all standard pressure-resistant water taps (two-handle mixer and single-lever mixer).

Figura 4: dettagliata view of the cold and hot water connections at the bottom of the unit.
3.5 Messa in servizio
Before the first use, the appliance must be thoroughly vented. Open the tap and let water flow until no more air escapes. Only then should the electrical connection be made. This prevents damage to the heating elements.
4. Istruzioni per l'uso
The Vaillant VED E 18/8 features a digital display for precise temperature control.

Figure 5: Digital display showing temperature and control knob for adjustment.
4.1 Regolazione della temperatura
The desired hot water temperature can be continuously adjusted from 30 °C to 55 °C using the control knob on the front panel. The integrated digital display shows the set temperature.
4.2 Hot Water Flow
The unit provides a hot water flow rate of 8 liters per minute, allowing for simultaneous hot water supply to multiple points like a shower, sink, or bathtub.
5. Manutenzione
The Vaillant VED E 18/8 is designed for easy maintenance with easily replaceable components. Regular inspection by a qualified professional is recommended to ensure optimal performance and longevity.
- Periodically check water connections for leaks.
- Ensure the area around the appliance is clean and free from obstructions.
- For any internal maintenance, always consult a qualified technician.
6. Risoluzione Dei Problemi
If you experience issues with your water heater, please consider the following:
- No hot water: Check the electrical supply and circuit breakers. Ensure the unit was properly vented during commissioning.
- Insufficient hot water: Verify the set temperature. Check water pressure.
- Codici di errore sul display: Refer to the full installation and operating manual for specific error code interpretations.
For complex issues or repairs, contact a qualified Vaillant service technician. Do not attempt to repair the unit yourself, as this may lead to further damage or safety hazards.
7. Specifiche tecniche
Below are the key technical specifications for the Vaillant VED E 18/8 Electronic Instantaneous Water Heater:
| Caratteristica | Specificazione |
|---|---|
| Produttore | Vaillant |
| Numero di modello | 0010023777 |
| Dimensioni (L x P x A) | Dimensioni: 24 x 24 x 48.1 cm; 4.38 kg |
| Energia | 18 kW |
| Voltage | 400 Volt |
| Frequenza | Frequenza 50 Hz |
| Materiale | Plastica |
| Metodo di installazione | Montaggio a parete |
| Portata | 8 liters per minute (hot water), 10 liters per minute (max) |
| Livello di rumore | 15 dB |
| Tipo di visualizzazione | GUIDATO |
| Tipo di protezione | IP25 (Jet-proof) |
| Fuse Rating (recommended) | 3x32 Amperi |
| Cable Cross-section (recommended) | 6 mm² |
| Classe di efficienza energetica | A |
| Consumo annuale di elettricità | 470 kWh |

Figure 6: Energy efficiency label for the Vaillant VED E 18/8, showing Class A rating and 470 kWh annual consumption.
For detailed product information and compliance, refer to the EPREL database: https://eprel.ec.europa.eu/qr/1532813
8. Garanzia e supporto
8.1 Informazioni sulla garanzia
Specific warranty details are typically provided with your purchase documentation. Please retain your proof of purchase for warranty claims. For any warranty-related inquiries, contact your retailer or Vaillant customer service.
8.2 Assistenza clienti
For technical assistance, spare parts, or service, please contact Vaillant customer support:
- Produttore: Vaillant GmbH
- Dipartimento di supporto: Vaillant Certification Department
- E-mail: info@vaillant.de
- Websito: www.vaillant.com
- Telefono: +49 180 6 824552
- Indirizzo: Berghäuser Str. 40, 42859 Remscheid, Germany





