ecoTEC plus 825, 832, 835, 838 and 938
ecoTEC plus combination boilers
- Step by step full text installation wizard
- Dedicated models available for LPG
- ErP 'A' rated
- Hand-built in our award-winning Derbyshire manufacturing plant
- Guarantee up to 10 years available when you book a Vaillant Advance installer*
Overview
The ecoTEC plus range of high efficiency boilers combine fantastic efficiency levels and high performance with great usability. Thanks to continuous modulation and real combustion control by a multi-sensor system, they achieve high efficiency at the lowest emissions.
*5 years out of the box guarantee. 10 year free extended Advance guarantee available when fitted with a boiler protection kit, excludes 48 and 64kW light commercial boilers
General information
The ecoTEC plus is available in a range of power outputs to meet the heating requirements of varying house sizes. Each one is ultraquiet, a feature recognised by the Noise Abatement Society, which has awarded many of the ecoTEC plus range the Quiet Mark for
its innovative design, specifically created to ensure a peaceful home for your customers.
At Vaillant we are working towards low carbon solutions today. As part of the HyDeploy project, Vaillant boilers have been tested with up to 20% hydrogen blended with Natural Gas, and we are currently undergoing many tests to each of our boilers to validate their compatibility with up to 20% hydrogen.
Features & benefits
- Available in 25, 32, 35 and 38kW outputs
- Highly efficient and economical to run – With up to an 89.4% efficiency rating (SAP 2009)
- Instant hot water delivery in just 5 seconds - Meaning no need for storage tank or cylinder
- Wide modulation range of up to 1:6 – Ensuring low energy consumption and maximum efficiency
- Flame lift detection system – Enabling more efficient and quieter combustion
- Dedicated models available for LPG – Giving a solution for off-gas areas
- Stylish contoured case design with down flap – Making this a boiler that fits with the décor of any home
- Built-in-two-stage frost protection – Ensuring optimal performance all year round
- An innovative solution for large homes – With a higher hot water demand, without needing to install a cylinder or hot water tank (ecoTEC plus 938 only)
- Extended guarantees available when installed by a Vaillant Advance partner – For total peace of mind
- Quiet Mark accreditation – Thanks to being ultra quiet whilst in operation
- Step by step wizard – For quicker ‘first time right’ set up and installation
- Compatible with aroTHERM air to water heat pump hybrid system – Making the perfect entry into renewable systems
- Free 5 year out the box guarantee. Upgrade to 10 year free extended guarantee when registered with Vaillant Advance with a boiler protection kit (excludes 48 and 64kW light commercial boilers).
Download your ErP label here
Useful videos
Vaillant Advance
Look forward to a better way of working with Vaillant Advance.
The Advance scheme rewards and supports installers by helping them to advance their business, their earnings and their knowledge.
Start benefiting from member features today.
Sign up to Vaillant Advance
Specifications
Specifications
Technical data | Unit | ecoTEC plus 825 | ecoTEC plus 832 | ecoTEC plus 832 LPG | ecoTEC plus 835 | ecoTEC plus 838 | ecoTEC plus 938 |
---|---|---|---|---|---|---|---|
Boiler type | combi | combi | combi | combi | combi | combi | |
Signature model output | 25kW | 32kW | 32kW | 35kW | 38kW | 38kW | |
Article number | 00100218323 | 0010021824 | 0010021825 | 0010021822 | 0010021826 | 0010021827 | |
Gas Council number | 47-044-83 | 47-044-84 | 47-044-85 | 47-044-82 | 47-044-86 | 47-044-87 | |
Boiler dimensions (HxWxD) | mm | 720 x 440 x 338 | 720 x 440 x 338 | 720 x 440 x 338 | 720 x 440 x 372 | 720 x 440 x 406 | 720 x 440 x 600 |
Heating | |||||||
Nominal heat output range at 50/30˚C (Condensing mode) | kW | 4.2 - 20.4 | 5.7 - 25.7 | 6.7 - 25.7 | 6.4 - 32.2 | 7.1 - 30.1 | 7.1 - 30.9 |
Nominal heat output range at 80/60˚C (Non condensing mode) | kW | 3.8 - 19.3 | 5.2 - 24.4 | 6 - 24.4 | 5.8 - 30.4 | 6.5 - 28.6 | 6.5 - 28.6 |
Maximum flow temperature | ˚C | 85 | 85 | 85 | 85 | 85 | 85 |
Flow temperature range | ˚C | 30 - 85 | 30 - 85 | 30 - 85 | 30 - 85 | 30 - 85 | 30 - 85 |
Flow temperature factory setting | ˚C | 75 | 75 | 75 | 75 | 75 | 75 |
Approximate condensate volume at 50/30˚C | litres/hr | 2 | 2.5 | 2.5 | 3.1 | 2.9 | 2.9 |
Modulation (max/min) | 1 : X | 1:6.7 | 1:6.1 | 1:5.3 | 1:6 | 1:6 | 1:6 |
Domestic Hot Water | |||||||
Maximum heat output for water generation | kW | 25.4 | 31.8 | 31.8 | 35 | 38.7 | 38.7 |
Lowest water pressure to operate boiler | bar | 0.35 | 0.35 | 0.35 | 0.35 | 0.35 | 0.35 |
Lowest water flow for operation | l/min | 2.0 | 2.0 | 2.0 | 2.0 | 2.0 | 2.0 |
Lowest water pressure for maximum flow rate | bar | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 |
Domestic hot water flow rate (at DT = Δ35K) * | l/min | 10.5 | 13 | 13 | 14.3 | 15.9 | 15.9 |
Hot water output temperature range | ˚C | 35 - 65 | 35 - 65 | 35 - 65 | 35 - 65 | 35 - 65 | 35 - 65 |
Mechanical | |||||||
Expansion vessel size | litres | 10 | 10 | 10 | 10 | 10 | 10 |
Gas inlet connection (pipe size) | mm | 15 | 15 | 15 | 15 | 15 | 15 |
Heating flow and return connections (pipe size) | mm | 22 | 22 | 22 | 22 | 22 | 22 |
Hot and cold water connections (pipe size) | mm | 15 | 15 | 15 | 15 | 15 | 15 |
Heat exchanger material | Stainless/Aluminium | Stainless steel | Stainless steel | Stainless steel | Stainless steel | Stainless steel | Stainless steel |
Boiler lift weight (Dry boiler) | kg | 36 | 37 | 37 | 38 | 43 | 60 (43+17) |
Performance | |||||||
NOx class | 5 | 5 | 5 | 5 | 5 | 5 | |
NOx (En 15502-2-1) | mg/kWh | 32 | 35 | 55 | 29 | 34 | 34 |
ErP efficiency | % | 94 | 94 | 94 | 94 | 94 | 94 |
ErP decibel rating (sound power) | dBa | 47 | 47 | 47 | 46 | 45 | 45 |
Fluing options | |||||||
Maximum horizontal flue length 60/100 | m | 12 | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 |
Maximum vertical flue length 60/100 | m | 16 | 8 | - | 8 | 8 | 8 |
Maximum horizontal flue length 80/125 | m | 39 | 32 | - | 32 | 32 | 32 |
Maximum vertical flue length 80/125 | m | 41 | 34 | - | 34 | 34 | 34 |