Condensing boiler · New equipmentVaillant ecoTEC Pure VMW286/7-2 HES
Vaillant ecoTEC Pure VMW286/7-2 HES boiler
Heating and hot water for everyday use, combined in a gas boiler.
- Gas
- Natural gas Convertible to propane
- Wi-Fi
- Optional myVAILLANT + control
- Heating
- 7.5-24.0 kW 80/60 °C
- Domestic hot water flow rate
- 13.5 l/min ΔT 30 K
Gas and Wi-Fi: compatibility and accessories
Gas and conversion: Natural gas G20 supply; adaptation to propane G31 with the kit and adjustments indicated by the manufacturer. Compatibility with butane G30 is not offered without explicit documentation for this version. The conversion and commissioning are the responsibility of a qualified professional; they are not included in the purchase. Source 1 ↗ Source 2 ↗
Wi-Fi and supply: Connectable with a VRT 50/2 control, sensoHOME or sensoCOMFORT plus the myVAILLANT module. Connection accessories are not assumed to be included. Source 1 ↗ Source 2 ↗
Description
Vaillant combines home heating and hot water for taps and showers. When choosing it, both water usage and heating needs are important: a home with multiple showers running at the same time requires a different assessment.
Domestic hot water is prepared when you turn on the tap, without an integrated storage tank. It is important to check how many water points you will use at the same time and the available space to replace the boiler.
What to check before installing this boiler
The choice of equipment does not replace the inspection of the installation by a qualified professional.
- Confirm the model and commercial reference, the type of gas, and the supply configuration in the manufacturer's documentation.
- Ask a qualified installer to assess the heating and domestic hot water demand; compare measured flow rates at the same temperature difference.
- Check dimensions, connections, flue gas evacuation, condensate drainage, and controls compatible with the existing installation.
- Confirm the included accessories and the delivery time before scheduling the installation. The online purchase of the equipment does not include installation or commissioning.
Technical data of Vaillant ecoTEC Pure VMW286/7-2 HES boiler
- Brand
- Vaillant
- Model
- Vaillant ecoTEC Pure VMW286/7-2 HES boiler
- Status
- New
- Supply scope
- Equipment without installation; please confirm the accessories for this configuration.
- Shipping
- Included in mainland Spain. Please confirm the deadline.
Specifications and dimensions of the model
Compare each magnitude under its testing conditions: heating, domestic hot water, efficiency, and dimensions.
- Heating power G20 (80/60 °C)
- 7.5-24.0 kW
Heating - Heating power G20 (50/30 °C)
- 8.3-26.1 kW
Heating - Heating load G20
- 7.8-24.8 kW
Heating - Adjustable flow temperature
- 30-80 °C
Heating - Maximum heating pressure
- 3 bar
Heating - Nominal heating flow rate (ΔT 20 K)
- 1.033 l/h
Heating - Heating expansion vessel
- 8 l
Heating - Domestic hot water power G20
- 7.7-28.0 kW
Hot water - Maximum thermal load DHW G20
- 28.6 kW
Hot water - Specific flow rate D (ΔT 30 K, EN 13203)
- 13.5 l/min
Hot water - Specific flow rate for domestic hot water (ΔT 35 K)
- 11.6 l/min
Hot water - Declared instantaneous flow rate for domestic hot water (ΔT 25 K)
- 16.2 l/min
Hot water - Minimum water flow
- 1.7 l/min
Hot water - Cold water flow limiter
- 14 l/min
Hot water - Adjustable domestic hot water temperature
- 35-60 °C
Hot water - Allowed service pressure for domestic hot water
- 0.3-10 bar
Hot water - Preparation of domestic hot water
- Deactivatable preheating
Hot water - Dimensions (height x width x depth)
- 720 x 440 x 338 mm
Dimensions and installation - Net weight
- 30.8 kg
Dimensions and installation - Minimum lateral distance
- 5 mm on each side
Dimensions and installation - Minimum inferior distance
- 180 mm
Dimensions and installation - Front service distance
- 500 mm
Dimensions and installation - Distance greater with duct 60/100
- 165 mm
Dimensions and installation - Maximum distance with duct 80/125
- 275 mm
Dimensions and installation - Maximum distance with duct 80/80
- 300 mm
Dimensions and installation - Gas supply pressure G20
- 20 mbar
Gas and equipment - NOx emissions class
- 6
Gas and equipment - Electrical supply
- 230 V / 50 Hz
Electricity and acoustics - Maximum electrical consumption
- 110 W
Electricity and acoustics - Standby power consumption
- 1.8 W
Electricity and acoustics - Degree of protection
- IPX4D
Electricity and acoustics - Interior acoustic power LWA
- 52 dB(A)
Electricity and acoustics - Energy class heating / DHW and profile
- A / A, XL profile
Efficiency and construction - Primary heat exchanger
- Stainless steel
Efficiency and construction
PDF and documentation of the model
Original documents, unmodified. Refer to the installation plan and the conditions of each data point before selecting the equipment.
- Installation manual ecoTEC pure VMW 236 and 286PDF · 48 pages · VaillantView original on the manufacturer's website ↗
- ecoTEC pure catalog and technical sheetPDF · 6 pages · VaillantView original on the manufacturer's website ↗
The gallery sheets are summaries of Uniclima based on these documents. The external volume diagram does not represent connections, accessories, or service distances.
Frequently asked questions: condensing boilers
Is the ecoTEC Pure 286 suitable for a 150 m² house?
In an example with assumed losses of 80 W/m², 150 m² require 12 kW, within their 7.5-24.0 kW at 80/60 °C. This does not convert 150 m² into a surface guaranteed by the manufacturer. Climate, insulation, ventilation, and emitters must be calculated, and their minimum of 7.5 kW should be assessed with few rooms in use. The 28 kW corresponds to domestic hot water, not to the maximum heating at 80/60 °C.
Do the 16.2 l/min advertised allow for two simultaneous showers with the Pure 286?
That figure corresponds to ΔT 25 K. If the water enters at 10 °C and is used at 40 °C, the temperature difference increases to 30 K and the specific flow rate is 13.5 l/min, lower than the 16 l/min required for two showers of 8 l/min each. With an even colder inlet and a temperature difference of 35 K, it declares 11.6 l/min. Additionally, there is a limiter of 14 l/min. It is necessary to check temperature, pressure, and mixing, without promising two showers based on an isolated figure.
Does the Pure 286 store water in a tank to supply a second bathroom?
The technical sheet describes the preheating of domestic hot water, which can be deactivated, not a sanitary reserve tank for two bathrooms. The 8 liters stated belong to the expansion vessel of the heating circuit. The water available during long consumption depends on the 28 kW of production, the network flow rate, and the inlet temperature; those 8 liters should not be added as accumulated hot water.
Can I install a Pure 286 in the space of a Pure 236?
Both have a body of 720 x 440 x 338 mm and weigh 30.8 kg, but support, gas, drainage, connections, and exhaust must be checked. The minimums are 5 mm on the sides, 180 mm below, and 500 mm for front access. Above, it is 165 mm with 60/100, 275 mm with 80/125, or 300 mm with 80/80. Matching dimensions does not certify the reuse of all accessories or allow installation without checking the entire system.
Does the Pure 286 make the same noise as the 236?
They do not have the same declared value: the indoor acoustic power LWA is 52 dB(A) for the 286 and 49 dB(A) for the 236. It is acoustic power, not the level that you will necessarily hear from the bedroom. Distance, walls, support, pipes, and operating mode influence the perceived sound. The comparison helps to choose the location, but it does not replace an acoustic assessment of the installation.
How much electricity does the Pure 286 need when it is in standby?
The manual indicates 1.8 W in standby and 110 W of maximum electrical consumption. Hypothetically maintaining 1.8 W for 24 hours equals 0.0432 kWh; it does not describe a day with heating, hot water, or active preheating. The 28 kW of domestic hot water is thermal power, not electrical consumption. The Pure 236 states 1.6 W in standby and 100 W maximum, so those values should not be assigned to the 286 either.
Does the price include installation and shipping?
Includes VAT and shipping to mainland Spain. Installation and adaptations are valued separately. Check the contents of the supply before purchasing.
