Vaillant ecoTEC Plus 418 Boiler Instruction Manual
Vaillant ecoTEC Plus 418 Boiler
Vaillant ecoTEC Plus 418 Boiler Instructions
Here we offer the Vaillant ecoTEC Plus 418 Boiler manual completely free and in English. We have cataloged this manual in the Boilers section on Manualverse, and it has been rated by 1 users with an average rating of 5. If you have any specific questions about Vaillant ecoTEC Plus 418 Boiler, we suggest checking the Frequently Asked Questions (FAQs) section of this manual.
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Vaillant ecoTEC Plus 418 Boiler Specifications
| Description | Unit | ecoTEC plus 418 |
|---|---|---|
| Maximum CH heat input (net) | kW | 18.9 |
| CH heat output (80/60 °C) | kW | 5.0 - 18.6 |
| CH heat output (50/30 °C) | kW | 5.3 - 20.0 |
| SEDBUK Band | A | |
| SAP Seasonal Efficiency | % | 90.4 |
| NOx Class | 5 | |
| "lP rating" | IPX4D | |
| Inlet gas working pressure required (natural gas) | mbar | 20 |
| Gas supply (G20) Gross CV (s.t.) | MJ/m3 | 37.8 |
| Maximum gas rate | M3/h | 2.0 |
| Minimum gas rate | M3/h | 0.53 |
| Burner % CO2 (Case on) | % | 9.3 + 0.2 - 0.5 |
| Gas connection (compression) | mm | 15 |
| Water connections (compression) | mm | 22 |
| Condensate drain (internal diameter) | mm | 19 min. |
| Fuse ratings fan supply PCB | A | 3.15 AT |
| Main PCB | A | 125 mAT |
| Minimum flow rate of water through the boiler | L/min. | 12.9 |
| Weight | kg | 3.1 |
| Electrical supply | V~/HZ | 230/~50 |
| External fuse | A | 3 |
| Power input | W | 60 |
| Case height | mm | 600 |
| Case width | mm | 375 |
| Case depth | mm | 334 |
Vaillant ecoTEC Plus 418 Boiler Details
The Vaillant ecoTEC Plus 418 Boiler is a highly efficient, wall-hung open vent condensing boiler designed for both fully pumped open-vented and sealed water central heating systems. Its advanced condensing technology ensures a Class 'A' SEDBUK rating and a SAP Seasonal Efficiency of 90.4%, leading to optimal energy usage and reduced running costs. This model is engineered for reliability and performance in modern domestic heating environments.
Installation flexibility is a key attribute of the ecoTEC Plus 418. It can be easily mounted on any internal wall and is compatible with various Vaillant flue systems, including standard horizontal and vertical Room Sealed Fan (RSF) options (100mm or 125mm diameters). The system also accommodates flue extensions, bends, and elbows, allowing for versatile placement within a property and simplifying complex installations.
For user convenience, the boiler features adjustable central heating water temperature settings. Domestic hot water temperature can also be adjusted directly on the boiler when it is integrated with a Vaillant uniSTOR unvented cylinder and compatible controls. Once configured, the boiler operates automatically, minimizing user interaction. An integrated diagnostic system provides clear status codes, aiding in both commissioning and any necessary fault-finding.
Safety is paramount with the ecoTEC Plus 418. It includes a built-in frost protection program that automatically activates the burner and system pump if the boiler's internal temperature drops to 3°C, provided the electrical and gas supplies remain active. The boiler requires proper electrical earthing, and it’s essential that installation and servicing are carried out by a competent, certified professional in accordance with all relevant safety regulations.
Maintaining the ecoTEC Plus 418 is straightforward. Annual servicing by a competent person is recommended to ensure its continued efficient and safe operation. For system longevity and protection, the use of suitable cleansers and inhibitors, especially for its stainless steel heat exchangers, is advised. Only genuine Vaillant spare parts should be used for any repairs or replacements to maintain optimal functionality and warranty validity.
As a condensing boiler, the ecoTEC Plus 418 naturally produces a plume of water vapour from its flue terminal, which is a normal indicator of its high-efficiency operation. It requires a plastic condensate drain pipe, ideally discharged into the internal household drainage system, and incorporates an internal 75mm trap for efficient condensate management. Care must be taken to ensure this drain is not modified or blocked.
The boiler features a user-friendly interface with clear fault codes displayed for easy identification of issues. A simple reset button allows for manual fault clearance if the burner fails to ignite. Vaillant backs this product with a full two-year parts and labour warranty, contingent upon adherence to manufacturer instructions and installation by a suitably qualified individual.
Frequently Asked Questions (FAQs)
Can't find the answer you need? Here are some frequently asked questions about the Vaillant ecoTEC Plus 418 Boiler, and we answer them below.










