The ecoTEC classic is the basic HR boiler in the Vaillant range. This appliance combines German quality with energy efficiency to provide the essential comfort for your home. The ecoTEC classic VHR 18-24/5-3 has a CW3 rating and provides 11 liters of hot water (40°C) per minute.
The ecoTEC classic carries the energy label A for both heating and hot water. The modulation range is 1:4. The partial load operation can be automatically set and adjusts throughout the year based on the seasons. This modulation range ensures even heating, thus helping to reduce gas consumption.
The ecoTEC classic is hybrid-ready; the heating system can be expanded with a heat pump. This allows you to use renewable energy sources and heat your home more efficiently than ever before. Additionally, you can save on energy costs while heating your home in a sustainable way.
The following thermostats are suitable for the Vaillant ecoTEC classic:
With the optional sensoNET gateway, you can also manage the system remotely using the sensoAPP.
| Feature | Value |
|---|---|
| Brand | Vaillant |
| Supplier Code | 0010025031 |
| EAN Code | 4024074850220 |
| Discount Group | 016 |
| Width | 440 mm |
| Height | 720 mm |
| Depth | 335 mm |
| Power Supply | 230 V |
| Number of Phases | 1 |
| Material Quality | Other |
| Inlet Connection | Compression |
| Return Connection | Compression |
| Nominal Voltage | 190 - 253 V |
| Frequency | 50 Hz |
| Closed Version | Yes |
| Nominal Hot Water Output | 24.1 kW |
| Nominal Upper Value Hot Water Output | 26.3 kW |
| Nominal Lower Value Hot Water Output | 23.7 kW |
| Water Heating Energy Efficiency (Nwh) | 84% |
| SEER (Ns) under average conditions | 92 |
| SEER (Ns) under cooler conditions | 97.9 |
| SEER (Ns) under warmer conditions | 86.9 |
| Capacity Profile | XL |
| Energy Efficiency Class Space Heating | A |
| Energy Efficiency Class Water Heating | A |
| Nominal Diameter Hot Water | 1/2" (15) |
| Additional Power Consumption at Full Load (ELmax) | 0.03 kW |
| Useful Heat Output at Nominal Heat Output and High-Temperature Operation (P4) | 18.5 kW |
| Efficiency at Nominal Heat Output and High-Temperature Operation (n4) | 86.9% |
| Additional Power Consumption in Standby Mode (Psb) | 0 kW |
| Standby Heat Loss (Pstby) | 0.06 kW |
| Built-in Economizer | No |
| Energy Efficiency Space Heating | 93% |
| Max Hydrogen Blend Percentage with NAT Gas | 0% |
| Suitable for Low Calorific Value Natural Gas | Standard Factory Setting |
| Suitable for High Calorific Value Natural Gas | Manually Adjustable |
| Suitable for Propane | With Conversion Kit (not included) |
| Suitable for Butane | Not Suitable |
| Suitable for Methane | Not Suitable |
| Suitable for LPG | Not Suitable |
| Suitable for Hydrogen | Not Suitable |
| Heat Exchanger Material | Stainless Steel (V2A) |
| Adjustable Heating Output | Yes |
| Nominal Diameter Cold Water | 1/2" (15) |
| Flow Threshold | 1.5 l/min |
| Built-in Pump Switching | Yes |
| Gas Certification VR/SV | Yes |
| Gas Certification NZ | Yes |
| CW Label | 3 |
| Nominal Lower Value Load | 19.1 kW |
| Nominal Upper Value Load | 21.2 kW |
| Minimum Operating Pressure | 0.3 bar |
| Minimum Return Temperature | 1 °C |
| Maximum Gas Pressure | 30 mbar |
| Hot Water Capacity at 60°C | 6.6 l/min |
| Built-in Weather Dependent Controller | No |
| Built-in Expansion Tank | No |
| Nominal Power 80-60°C | 18.5 kW |
| Maximum Flow Temperature (Operating Temperature) | 85°C |
| Maximum Operating Pressure | 3 bar |
| Built-in Fill/Drain Valve | No |
| Built-in Overpressure Valve | No |
| External Pipe Diameter Inlet | 22 mm |
| External Pipe Diameter Return | 22 mm |
| Fuel Connection | Compression |
| External Pipe Diameter Fuel | 15 mm |
| Air Supply Connection | Socket |
| Nominal Channel Diameter Air Supply | 80 mm |
| Flue Gas Discharge Connection | Socket |
| External Pipe Diameter Cold Water | 15 mm |
| External Pipe Diameter Hot Water | 15 mm |
| Condensate Connection | Flexible |
| External Pipe Diameter Condensate | 25 mm |
| Minimum Gas Pressure | 20 mbar |
| Suitable for Natural Gas | Yes |
| Gas Certification VR | No |
| Cold Water Connection | Compression |
| Hot Water Connection | Compression |
| Nominal Channel Diameter Flue Gas Discharge | 80 mm |
| Burner Control High/Low | No |
| Modulating Burner Control | Yes |
| Built-in Manometer | Yes |
| Gas Certification HR | Yes |
| Efficiency | 107% |
| Pilot Flame | No |
| Second Return Connection | No |
| Control Signal On/Off | Yes |
| Control Signal High/Low | No |
| Control Signal 0-10V | No |
| Control Signal OpenTherm | No |
| Operation as Open Version (Air Supply) Possible | Yes |
