Vaillant ecoTEC Pure VMW286/7-2 HES boiler

Condensing boiler · New equipmentVaillant ecoTEC Pure VMW286/7-2 HES

Vaillant ecoTEC Pure VMW286/7-2 HES boiler

VAT includedIn stock

The ecoTEC pure VMW 286/7-2 H-ES increases heating up to 24.0 kW at 80/60 °C and domestic hot water production up to 28 kW. Its specific flow rate is 13.5 l/min at ΔT 30 K. It maintains the 338 mm depth of the 236, with greater domestic capacity and a minimum heating output of 7.5 kW, which is worth considering for low demands. Equipment without installation; please confirm the accessories for this configuration. VAT and mainland shipping included.

Heating power (80/60 °C): 7.5-24.0 kW
Specific flow rate for domestic hot water (ΔT 30 K): 13.5 l/min
Dimensions (height x width x depth): 720 x 440 x 338 mm

Condensing boiler

The model, at a glance

Vaillant ecoTEC Pure 286: heating 7.5-24.0 kW at 80/60 °C, DHW 28.0 kW, specific flow rate 13.5 l/min at ΔT 30 K and 338 mm deep.

Heating power (80/60 °C): 7.5-24.0 kW
Specific flow rate for domestic hot water (ΔT 30 K): 13.5 l/min
Dimensions (height x width x depth): 720 x 440 x 338 mm

Read the full description and what it includes.

The Pure 286 offers more capacity than the 236 without increasing the size of the body. Its range is from 7.5 to 24.0 kW in heating at 80/60 °C and from 8.3 to 26.1 kW at 50/30 °C. The nominal flow rate of the circuit at ΔT 20 K is 1,033 l/h. The choice must cover the winter load and adapt to the periods when the home requires less heat.

In domestic hot water, it has 28.0 kW. The 16.2 l/min advertised at ΔT 25 K does not equate to maintaining that flow rate with colder inlet water: at 30 K the specific value drops to 13.5 l/min and at 35 K to 11.6 l/min. For multiple consumption points, the flow rates must be added and compared to the expected usage temperature.

The domestic hot water preheating function can be deactivated. It is not a reserve of water for simultaneous consumption; the 8-liter expansion vessel corresponds to heating. The cold water inlet limiter is 14 l/min and should not be confused with test flow rates or the mixed volume that comes out of a shower.

The dimensions of 720 x 440 x 338 mm and 30.8 kg match the 236, but do not guarantee a direct replacement without reviewing the installation. Its declared indoor sound power is 52 dB(A), compared to 49 dB(A) in the 236. The maximum electrical power is 110 W and the standby consumption is 1.8 W; these are not the gas consumption or a permanent electrical demand.

What is included in the purchase?

Equipo sin instalación. Confirma los accesorios de esta configuración.

Price including VAT and shipping to mainland Spain. Installation, adaptations, and commissioning are valued separately.

Consult the manufacturer's PDFs ↓

Guide

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

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

Manufacturer's sources

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.

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

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.