Vaillant ecoTEC Pro VMW 286/5-3 boiler (h-es)

Condensing boiler · New equipmentVaillant ecoTEC Pro VMW 286/5-3 (h-es)

Vaillant ecoTEC Pro VMW 286/5-3 boiler (h-es)

VAT includedIn stock

The ecoTEC Pro VMW 286/5-3 H-ES combines heating from 6.2 to 24.0 kW with natural gas at 80/60 °C and 28 kW for domestic hot water. It delivers 13.4 l/min at ΔT 30 K and allows for the disconnection of pre-heating of water. Its wall-mounted body measures 720 x 440 x 338 mm, with an approximate net weight of 36 kg. Equipment without installation; confirm the accessories for this configuration. VAT and mainland shipping included.

Heating power G20 (80/60 °C): 6.2-24.0 kW
Domestic hot water flow rate (ΔT 30 K): 13.4 l/min
Dimensions (height x width x depth): 720 x 440 x 338 mm

Condensing boiler

The model, at a glance

Vaillant ecoTEC Pro VMW 286/5-3 H-ES: calefacción G20 de 6,2 a 24 kW, ACS de 28 kW, caudal de 13,4 l/min a ΔT 30 K y 338 mm de fondo.

Heating power G20 (80/60 °C): 6.2-24.0 kW
Domestic hot water flow rate (ΔT 30 K): 13.4 l/min
Dimensions (height x width x depth): 720 x 440 x 338 mm

Read the full description and what it includes.

The Pro 286 provides heating and hot water with different performance for each service. With natural gas G20, it delivers from 6.2 to 24.0 kW at 80/60 °C and from 7.0 to 25.9 kW at 50/30 °C. The minimum operating power is as important as the maximum when there are few rooms open or the home loses little heat; increasing power does not guarantee better adaptation to those situations.

In domestic hot water, it reaches 28.0 kW and a flow rate of 13.4 l/min at ΔT 30 K. The water can be adjusted between 35 and 65 °C, with a minimum flow rate of 1.5 l/min and a required connection pressure of 0.350 bar. These values do not mean that the maximum domestic hot water output can be maintained at any pressure: the consumption points must be sized according to the actual supply and the inlet temperature.

The pre-preparation of hot water is disconnectable. The 10-liter expansion vessel belongs to the heating system and should not be added as a storage unit for showers. The pump has a circulation flow rate of 1,032 l/h at ΔT 20 K and a available pressure of 0.250 bar under that condition. Adjusting the circuit to its emitters is part of the installation work, not an automatic compatibility with any home.

Its 338 mm depth helps to study a compact location, but clearances and maintenance access must be reserved. The approximate net weight is 36 kg, so the support must be adequate. The maximum electrical consumption is 85 W, different from its 28 kW thermal output for domestic hot water. The gas variant, regulation accessories, and the flue system are checked separately, without assuming the inclusion of the contents of another commercial set.

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

Datos técnicos de Caldera 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

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

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.