1. Réamhrá
This manual provides essential information for the safe and efficient installation, operation, and maintenance of your ELDOM Favourite WH05039L horizontal storage water heater. Please read these instructions carefully before installation and use, and retain them for future reference. This water heater is designed for horizontal installation, making it suitable for spaces where a vertical boiler may not fit.
Key features include thick, dense CFC-free insulation for minimal energy loss, a high-temperature resistant boiler lining, antifreeze protection, and dual magnesium anode systems to protect against rust. The unit is CE certified, ensuring compliance with European safety standards, and includes a 3-in-1 metallic combined safety valve.

Figure 1: ELDOM Favourite WH05039L Horizontal Storage Water Heater, front view.
2. Faisnéis Sábháilteachta
RABHADH: Failure to follow these safety instructions could result in electric shock, fire, property damage, or personal injury.
- Ní mór do phearsanra cáilithe an suiteáil agus an chothabháil a dhéanamh i gcomhréir leis na rialacháin áitiúla agus leis an lámhleabhair seo.
- Ensure the electrical supply matches the specifications of the water heater (230V, 2kW).
- Dícheangail an chumhacht i gcónaí sula ndéantar aon chothabháil nó seirbhís.
- Ná hoibrigh an téitheoir uisce má tá sé millte nó má tá sé mífheidhmiúil.
- Ní mór an téitheoir uisce a bheith talmhaithe i gceart.
- Do not block the safety valve. Regular inspection of the safety valve is recommended.
- Coinnigh ábhair inadhainte ar shiúl ón téitheoir uisce.
- Níl an fearas seo beartaithe lena úsáid ag daoine (lena n-áirítear leanaí) a bhfuil cumais choirp, céadfacha nó mheabhrach laghdaithe acu, nó a bhfuil easpa taithí agus eolais acu, ach amháin má tá maoirseacht nó treoir tugtha dóibh maidir le húsáid an fhearais ag duine atá freagrach as a sábháilteacht.
- Ba chóir go ndéanfaí maoirseacht ar leanaí lena chinntiú nach mbíonn siad ag súgradh leis an bhfearas.
3. Socrú & Suiteáil
The ELDOM WH05039L is designed for horizontal wall mounting. Ensure the mounting surface is structurally sound and capable of supporting the water heater's weight when full (approx. 19 kg empty + 50 kg water = 69 kg).
3.1 Gléasta
Mount the water heater horizontally using appropriate wall anchors and brackets (not always included, check packaging). Refer to the dimension diagram for precise measurements and mounting points.

Figure 2: Technical diagrams showing dimensions, internal components, and connection points. Note the left-side connections.
The diagram illustrates the external dimensions (A, B, C, D, E, F, G, M) and internal structure. Pay attention to the mounting points (labeled 4 in the top-left diagram) and the position of the heating element (5 in the bottom-left diagram).
3.2 Naisc Pluiméireachta
The water heater features connections on the taobh clé. Ensure proper plumbing for hot and cold water lines.
- Hot water outlet (1): Connect to the hot water supply system.
- Cold water inlet - Drain (2): Connect to the cold water supply. This connection also serves as the drain point.
- Comhla Sábháilteachta: Install the included 3-in-1 metallic combined safety valve on the cold water inlet. This valve is crucial for pressure relief and preventing backflow. Ensure the discharge pipe from the safety valve is routed to an open drain.
All connections are G1/2M. Use appropriate sealing materials to prevent leaks.
3.3 Ceangal Leictreach
Connect the water heater to a dedicated electrical circuit. The unit requires 230 Volts (AC) and has a power rating of 2 kW (10 Amperes). Ensure the circuit is protected by a suitable circuit breaker and that proper grounding is established.
- The electrical connection point is typically located under the control panel cover (4 in the top-right diagram).
- Ensure all wiring is secure and insulated.
- The on/off switch is illuminated and waterproof.
4. Oibríocht
Once installed and filled with water, the ELDOM WH05039L is ready for operation.
4.1 An Téitheoir Uisce a líonadh
- Before switching on the power, ensure the water heater is completely filled with water.
- Open a hot water tap in your home to allow air to escape from the tank.
- Open the cold water inlet valve to fill the tank.
- Once water flows steadily from the hot water tap, the tank is full. Close the hot water tap.
4.2 Cumhachtú Air agus Socrú Teochta
- Switch on the main power supply to the water heater using the illuminated on/off switch.
- Adjust the desired water temperature using the external mechanical thermostat. The temperature indicator (3 in the top-right diagram) will show the current water temperature.
- The recommended thermostat setting for optimal energy efficiency and safety is typically around 60°C.
4.3 Antifreeze Protection
The water heater is equipped with antifreeze protection. In cold environments, this feature helps prevent water inside the tank from freezing, protecting the unit from damage. However, for prolonged periods of non-use in freezing conditions, it is advisable to drain the water heater completely.
5. Cothabháil
Regular maintenance ensures the longevity and efficient operation of your ELDOM water heater.
5.1 Magnesium Anode Inspection and Replacement
The water heater features two magnesium anode systems to protect the tank from corrosion and rust. These anodes are sacrificial and deplete over time. It is recommended to have them inspected annually by a qualified technician and replaced as necessary, typically every 1-3 years depending on water quality.
5.2 An Téitheoir Uisce a Dhraenáil
Draining may be required for maintenance, prolonged periods of non-use, or to prevent freezing. To drain:
- Turn off the electrical power supply to the water heater.
- Dún an comhla inlet uisce fuar.
- Open a hot water tap in your home to relieve pressure and allow air into the tank.
- Connect a hose to the cold water inlet/drain connection (2) and route it to a suitable drain.
- Open the drain valve (if separate, or use the cold water inlet connection) to allow water to flow out.
- Once drained, close the drain valve and hot water tap.
5.3 Safety Valve Check
Periodically check the safety valve by lifting the lever to ensure it operates freely and discharges water. This helps prevent mineral buildup. If the valve does not discharge water or leaks continuously, it may need replacement.
5.4 Glanadh
Glan taobh amuigh an téitheoir uisce le clúdach bog, damp éadach. Ná húsáid glantóirí nó tuaslagóirí scríobach.
6. Fabhtcheartú
This section provides solutions to common issues. For problems not listed here, or if you are unsure, contact qualified service personnel.
| Fadhb | Cúis Féideartha | Réiteach |
|---|---|---|
| Gan uisce te | No power, thermostat set too low, heating element failure. | Check power supply and circuit breaker. Adjust thermostat. If element failure is suspected, contact service. |
| Uisce nach bhfuil te go leor | Thermostat set too low, excessive hot water usage, sediment buildup. | Increase thermostat setting. Allow recovery time between uses. Consider draining and flushing the tank. |
| Sceitheadh uisce | Naisc scaoilte, comhla sábháilteachta lochtach, creimeadh umair. | Tighten connections. Inspect and replace safety valve if necessary. Tank corrosion usually requires replacement. |
| Fuaimeanna neamhghnácha (m.sh., pléascadh, torann) | Carnadh dríodair san umar. | Drain and flush the tank to remove sediment. |
7. Sonraíochtaí
| Gné | Sonraigh |
|---|---|
| Branda | ELDOM |
| Múnla | WH05039L |
| Cineál | Horizontal Storage Water Heater |
| Cumas | 50 lítear |
| Cumhacht | 2 kW |
| Imltage | 230 Volta (AC) |
| Reatha | 10 Ampeire |
| Tomhaltas Fuinnimh | 1418 kWh in aghaidh na bliana |
| Aicme Éifeachtúlachta Fuinnimh | C |
| Toisí (L x D) | 760 x 410 mm (thart ar 41 x 76 x 41 cm) |
| Meáchan (folamh) | 19 kg |
| Brú Oibriúcháin Max | 0.7 MPa (7 Bar) - Note: Product data listed 800 Bar, which is likely a typo. 0.7 MPa is standard. |
| Naisc | Left side, G1/2M |
| Gnéithe Speisialta | Rust-proof (dual magnesium anodes), Antifreeze protection, 3-in-1 safety valve |
| Ábhar | Cruach cóimhiotail |
| Uisce measctha ag 40 °C | 70 lítear |
| Acoustic Power Level | 15 dB |

Figure 3: Energy efficiency label for ELDOM WH05039L, showing Class C rating and annual energy consumption.
8. Barántas & Tacaíocht
For warranty information, technical support, or service inquiries, please contact ELDOM directly using the details below. Always provide your model number (WH05039L) when contacting support.
- EPREL Product Information: https://eprel.ec.europa.eu/qr/31202
- Monaróir Websuíomh: https://eldominvest.com/
- Tacaíocht Ríomhphost: tech@eldominvest.com
- Tacaíocht Fón: +359 52 571 914
- Seoladh: бул. "Владислав Варненчик" 275А, 9009 Варна / Varna, Bulgaria
Coinnigh do chruthúnas ceannaigh le haghaidh éilimh bharánta.