Vaillant EcoTEC Plus 625 Boiler Instruction Manual
Vaillant EcoTEC Plus 625 Boiler
Vaillant EcoTEC Plus 625 Boiler
Vaillant EcoTEC Plus 625 Instructions
Here we offer the Vaillant EcoTEC Plus 625 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 625 Boiler, we suggest checking the Frequently Asked Questions (FAQs) section of this manual.
Product Images
Vaillant EcoTEC Plus 625 Boiler Specifications
| Feature | Specification |
|---|---|
| Model | Vaillant EcoTEC Plus 625 (VU 25CS/1-5 (N-GB)) |
| Product Article Number | 0010036012 |
| Gas Council Number | 41-694-48 |
| Designated Country | GB, IE |
| Permitted Gas Boiler Category | II2H3P |
| CE / UKCA PIN | 0063CU3910 |
| Gas Connection (Boiler Side) | 15 mm |
| Flow/Return Heating Connections (Boiler Side) | G 3/4 ″ |
| Domestic Hot/Cold Water Connections (Boiler Side) | — |
| Expansion Relief Valve Connection | 15 mm |
| Condensate Discharge Hose Connection | 19 mm |
| Air/Flue Pipe Connection | 60/100 mm |
| Heating Expansion Vessel Capacity | 10 L |
| Pre-charge Pressure of Heating Expansion Vessel | 70 kPa (700 mbar) |
| Min. Flue Gas Temperature | 35 ℃ |
| Max. Flue Gas Temperature | 85 ℃ |
| Approved Gas Boiler Types | C13, C33, C43, C53 |
| NOx Class | 6 |
| Empty Weight | 35 kg |
| Weight Ready for Operation (Filled) | 41 kg |
| Gas Connection Pressure (G20 Natural Gas) | 2.0 kPa (20.0 mbar) |
| NOx Emission, Weighted (G20 EN 15502-2-1) | 27.00 mg/kWh |
| 30% Efficiency (G20) | 109.4 % |
| Max. Gas Volume Flow (G20 DHW Gen.) | 3.24 m³/h |
| Nominal Heat Output Range (40/30 °C) | 4.0 to 26.9 kW |
| Nominal Heat Output Range (80/60 °C) | 3.5 to 24.9 kW |
| Max. Heat Output for Domestic Hot Water | 34.0 kW |
| Nominal Heat Input for DHW (Hi) | 30.6 kW |
| Max. Flow Temperature | 85 ℃ |
| Flow Temperature Adjustment Range (Factory Setting) | 30 to 80 ℃ (75 ℃) |
| Permissible Operating Pressure (Heating) | 0.25 MPa (2.50 bar) |
| Approx. Condensate Rate (50/30 °C Heating Mode) | 2.6 L/h |
| Rated Voltage | 230 V~ |
| Mains Frequency | 50 Hz |
| Built-in Fuse (Slow-blow) | 4 A |
| Max. Power Consumption (Heating Mode) | 87.6 W |
| Max. Power Consumption (DHW Mode) | 102 W |
| Electrical Standby Energy Consumption | < 2 W |
| IP Rating | IPX5D |
Vaillant EcoTEC Plus 625 Boiler Details
The Vaillant EcoTEC Plus 625 boiler is designed as a highly efficient heat generator for sealed heating installations. It incorporates a comprehensive control system with an intuitive display and various elements for user interaction, including standby activation, reset functions, temperature adjustments, and menu navigation. Special symbols on the display indicate burner modulation, system pressure, active modes (heating, DHW, comfort), and warnings or faults, providing users with immediate feedback on the boiler's status.
Safety is paramount, with strict guidelines against improper use and detailed instructions for handling potential gas or flue gas leaks. The boiler is also protected against subsequent unauthorized modifications, emphasizing the importance of qualified personnel for installation and servicing. Furthermore, Vaillant is a member of the Hot Water Association and the Benchmark Scheme, ensuring adherence to high standards for product quality, performance, and installation practices in the UK and Ireland.
The boiler features Sitherm Pro™ technology for intelligent combustion regulation, automatically optimizing the gas-air ratio within a given gas family. This eliminates the need for manual adjustments in most cases, streamlining setup and ensuring efficient operation. The system also tracks energy consumption, yields, and efficiencies, providing approximate values for heating and domestic hot water usage over various timeframes, though these are not suitable for billing purposes.
Operationally, the EcoTEC Plus 625 supports both heating and domestic hot water (DHW) generation. Users can set desired flow temperatures for heating and activate a comfort mode for DHW, which keeps water ready at the desired temperature. An integrated anti-legionella function automatically heats the cylinder to 70 °C if the temperature drops below 50 °C for 24 hours, ensuring potable water safety.
The boiler includes several built-in safety devices. These include protection against electrical supply failures, an overheating safety shutdown, and an internal frost protection mechanism that activates the pump and burner at low temperatures to prevent freezing. Additionally, the boiler will cease operation if the condensate drain becomes blocked, for example, due to ice formation, requiring intervention to clear the obstruction.
For advanced control, the boiler can be integrated with external room temperature controls like the Vaillant sensoROOM pure (VRT 50/2). This allows for time-dependent heating schedules and direct temperature control from the room thermostat. The system also offers configurable hydraulic operating modes, enabling installers to tailor pump performance to specific heating system requirements, such as constant pressure or spread ΔT control.
Maintenance is crucial for the longevity and efficiency of the EcoTEC Plus 625. The manual recommends annual inspections by a competent person, with indicators for maintenance messages on the display. It provides detailed procedures for checking and topping up heating system pressure, cleaning the heat exchanger, and verifying the condensate discharge system, all designed to ensure optimal and safe performance. The inclusion of a QR service code allows technicians to quickly access product status information via the myVAILLANT pro app, facilitating diagnostics and service.
Frequently Asked Questions (FAQs)
Can't find the answer you need? Here are some frequently asked questions about the Vaillant EcoTEC Plus 625 Boiler, and we answer them below.
