Condensing boiler · New equipmentVaillant ecoTEC Pro VMW 286/5-3 (h-es)
Vaillant ecoTEC Pro VMW 286/5-3 boiler (h-es)
Heating and hot water for everyday use, combined in a gas boiler.
- Gas
- Natural gas Convertible to propane
- Wi-Fi
- Optional myVAILLANT + control
- Heating
- 6.2-24.0 kW 80/60 °C
- Domestic hot water flow rate
- 13.4 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 via a compatible control (sensoHOME, sensoCOMFORT, or sensoROOM) and the myVAILLANT module. They are accessories; they are not advertised as included with this boiler. Source 1 ↗ Source 2 ↗ Source 3 ↗
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 Pro VMW 286/5-3 (h-es)
- Brand
- Vaillant
- Model
- Vaillant ecoTEC Pro VMW 286/5-3 boiler (h-es)
- 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)
- 6.2-24.0 kW
Heating - Heating power G20 (50/30 °C)
- 7.0-25.9 kW
Heating - Heating power G31 (80/60 °C)
- 8.2-24.0 kW
Heating - Heating power G31 (50/30 °C)
- 8.9-25.3 kW
Heating - Maximum heating load G20
- 24.5 kW
Heating - Minimum thermal load G20
- 6.6 kW
Heating - Maximum flow temperature
- 85 °C
Heating - Supply temperature adjustment range
- 30-80 °C
Heating - Maximum heating pressure
- 3 bar
Heating - Circulation flow rate (ΔT 20 K)
- 1.032 l/h
Heating - Available pump pressure at nominal flow rate
- 0.250 bar
Heating - Approximate condensates in heating (50/30 °C)
- 2.5 l/h
Heating - Heating expansion vessel
- 10 l
Heating - Maximum power DHW G20
- 28.0 kW
Hot water - Maximum thermal load DHW G20
- 28.6 kW
Hot water - Domestic hot water flow rate (ΔT 30 K)
- 13.4 l/min
Hot water - Minimum water flow
- 1.5 l/min
Hot water - Required connection pressure for domestic hot water
- 0.350 bar
Hot water - Maximum domestic hot water pressure
- 10 bar
Hot water - Adjustable domestic hot water temperature
- 35-65 °C
Hot water - Preparation of domestic hot water
- Disconnectable
Hot water - Dimensions (height x width x depth)
- 720 x 440 x 338 mm
Dimensions and installation - Approximate net weight
- 36 kg
Dimensions and installation - Minimum lateral distance
- 5 mm on each side; optimal 50 mm
Dimensions and installation - Minimum inferior distance
- 180 mm; optimal 250 mm
Dimensions and installation - Front maintenance 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 - Electrical supply
- 230 V / 50 Hz
Electricity - Permissible connection voltage
- 190-253 V
Electricity - Minimum electrical consumption
- 35 W
Electricity - Maximum electrical consumption
- 85 W
Electricity - Standby power consumption
- < 2 W
Electricity - Degree of protection
- IPX4D
Electricity - Gas supply pressure G20
- 20 mbar
Gas and equipment - NOx emissions class
- 6
Gas and equipment
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.
- ecoTEC pro VMW 286/5-3 H-ES installation manualPDF · 44 pages · VaillantView original on the manufacturer's website ↗
- ecoTEC pro catalog and preparation of domestic hot waterPDF · 2 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
Does the ecoTEC Pro 286 work for a house of 150 m²?
As an example, 150 m² with assumed losses of 80 W/m² require 12 kW, within the 6.2-24.0 kW range it delivers with natural gas at 80/60 °C. That area is not a certified capacity. If only one zone that demands 4 kW is heated, it falls below the minimum and may alternate between on and off cycles. The actual load needs to be calculated, and emitters, insulation, climate, and rooms in use should be reviewed; the 28 kW for domestic hot water is not its maximum heating capacity.
Can it maintain two showers of 8 l/min with an inlet water temperature of 10 °C?
To use water at 40 °C from an inlet at 10 °C, the temperature difference is 30 K. Two showers of 8 l/min add up to 16 l/min, which is above their 13.4 l/min at that temperature difference. One shower of 8 l/min does fall below the declared thermal capacity, but it requires sufficient flow and network pressure. If that usual simultaneous use is required, more domestic hot water production or accumulation should be considered; opening two taps does not increase the available power.
Do the 10 liters of the Pro 286 allow for stored water for another shower?
No: those 10 liters correspond to the heating expansion vessel, not to a domestic hot water reserve. The boiler produces domestic hot water within the unit itself and allows for the disconnection of its prior preparation. This function should not be interpreted as a 10-liter tank for consecutive or simultaneous baths. During prolonged demand, its 28 kW for domestic hot water, the inlet water temperature, and the available flow rate are taken into account.
What space does the ecoTEC Pro 286 need inside a cabinet?
The body measures 720 x 440 x 338 mm and its approximate net weight is 36 kg. It requires 5 mm on each side, preferably 50 mm, and 180 mm below, preferably 250 mm. Above, it is 165 mm with a 60/100 duct or 275 mm with an 80/125. There must be 500 mm of front access for maintenance, which can be obtained by opening a door. Support, connections, and discharge are verified separately: having a space of 338 mm in depth is not enough to confirm the installation.
Does it have the same minimum power with natural gas as with propane?
No. At 80/60 °C, the Pro 286 declares 6.2-24.0 kW with natural gas G20 and 8.2-24.0 kW with propane G31. The maximum is the same, but the minimum increases with propane, which is relevant if the house requires little heat. At 50/30 °C, the ranges are 7.0-25.9 and 8.9-25.3 kW respectively. The type of gas, configuration, and any adaptations must be verified by a qualified professional; it is not guaranteed that the offered unit is prepared to switch gas without intervention.
Are the 28 kW of the Pro 286 electrical consumption?
No: they are maximum thermal power for producing hot water. The indicated electrical consumption is 35 W as minimum operating power, 85 W as maximum, and less than 2 W in standby. Maintaining only that standby state for 24 hours would mean less than 0.048 kWh; it does not represent a day with heating or domestic hot water active. Its power supply is 230 V and 50 Hz. This distinction prevents confusing a gas boiler with an electric water heater of 28 kW.
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.
