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3-15kW Mattira Electric System Boiler for Heating only Wall Mounted, Digital Modulating Electric Boiler MAS15

Model No. MAS15
Availability: Usually 2 - 3 Days


List price £1,457.72
You save £437.32!

Free delivery

(over £100+VAT, applies to zones A and B only, £6+VAT otherwise)

This is the Elnur MAS15 Mattira System Digital Modulating, a Heating Only Electric Boiler. It is compatible with the Elnur Connected Range.

Please note: this item is on a special order, and it is non-returnable - it cannot be returned for a refund.

Mattira MAS15 3-15kW Electric System Boiler for Heating - Features

  • Wall mounted heating boiler made of insulated steel.
  • Modulating electronic control of the heater by SEM system (Smart Electronic Modulating System).
  • Stainless steel shielded elements INCOLOY 800.
  • 6L heating expansion vessel.
  • Digital display.
  • Hydrometer / Pressure gauge 0-4bar.
  • Circulating pump.
  • Auto air vent.
  • Silent TRIAC power switches.
  • Powder coated RAL 9010.
  • Auto Heating Regulation mode.
  • Heating flow detector.
  • Heating temperature limiter 100ºC.
  • Heating 3 bar relief valve.
  • 7 bar heating pressure relief valve.
  • Powder coated RAL 9010 steel structure.
  • Wall bracket steel template to set up connections easily.
  • Compatible with Elnur Connect
  • Silent TRIAC power switches.
  • Compatible with Underfloor heating
  • Compatible with Ambient Thermostats TA4D, CTP10, X3D and the Elnur Connected range of internet thermostats, all available as accessories.

Mattira MAS15 3-15kW Electric System Boiler for Heating - Technical

  • Model: MAS15
  • Voltage: 3 x 400 V+N / 220-240
  • Frequency: 50Hz
  • Insulation: Class 1 electrical rated
  • Net weight: 29.5kg
  • Dimensions: 265mm depth, 760mm height, 350mm width
  • Clearances: 10mm on either side of the boiler (left and right), 75mm above and 200mm below. 
  • Sound power level, indoors: 36dB
  • A minimum of 200mm clearance must be maintained underneath the boiler to allow replacement of the heating elements if required. A minimum of 500 mm clearance must be maintained in front of the boiler to enable easy access for servicing. 

Dimensions and connections:

  • A - Heating flow 3/4"
  • B - Heating return 3/4"
  • C - Safety valve drain
  • D - Electrical connection

Auxiliary / extra:

  • ECGWAY - Elnur Connected Gateway Hub (for connection to wifi)
  • ECPRSTAT - Elnur Connected Wireless Programmable Room Stat
  • ECRSTAT - Elnur Connected Wireless Room Stat
  • ECAR - Elnur Connected Appliance Receiver (for hard-wiring)

Elnur Connected for Mattira Boilers - Features

  • Elnur Connected is the perfect control system for your new Mattira boiler. Easy to install and set up, the Elnur Connected boiler control system can be operated in the home or from wherever you are by using the purpose designed App on your Smartphone or Tablet.
  • This SmartLife Technology is the perfect solution for ultimate home heating efficiency and an ideal choice for houses, apartments, holiday homes and weekend cottages as well as offices, commercial properties and public meeting / community halls.
  • All Mattira electric boilers can be limited to any output between 3 and 12 kW on single phase supplies and up to 15 kW on threephase supplies. 
  • Heating Modulation: The advanced control board on the boiler will automatically modulate the heating output to the demand required to save energy. This modulating feature of GABARRÓN electric boilers is managed by a Smart Electronic Modulating system (SEM system) which recalculates every 20 seconds in order to regulate the consumption depending on the real heat demand. It applies TRIAC technology combined with an external chrono-thermostat to continuously adapt the heating capacity to the heating needs of the premises, thus achieving 100% energy efficiency and overall savings in energy costs.
  • Auto Heating Regulation: Additionally, it is possible to regulate the temperature at which the boiler drives the water heating circuit depending on the outdoor temperature. This method of regulation provides maximum comfort as it anticipates changes in the thermal needs of the house. The room thermostat continues to regulate the temperature inside the house. The connection of an external temperature sensor is required to activate this mode.
  • Easy Installation: Gabarron Mattira electric boilers come fitted with all the components required to operate the unit, including a template for ease of installation. Installation is quick and easy and can usually be completed in a single day. 
  • 5 Years Guarantee: Your new Gabarron Mattira electric boiler from Elnur is warranted against faulty materials and manufacture defects. This warranty will give you total peace of mind and protection. Full terms and conditions of the warranty are detailed in the manual supplied with the boiler which can also be downloaded from our website - The internal unvented hot water cylinder is warranted against faulty materials and manufacture defects for a period of 5 years from the date of purchase. The remainder of components are warranted against faulty materials and manufacture defects for a period of 2 years.
  • Compatible with Underfloor Heating: The entire range of GABARRÓN boilers can be used with hot water radiators or with radiant floor or overhead heating. In addition, Mattira boilers can be installed in combination with other heating systems such as thermal solar panels, heat pumps, etc..

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Sparks Direct delivers via courier to the UK only; the standard delivery charge is £6 + VAT for all orders under £100 + VAT. If your order is over £120, you get free delivery (unless there's a special delivery charge for the items you wish to order or you're in shipping zone C or D). Full details for shipping charges can be found via Terms and Conditions.

If the items you order are in stock and the order is placed before 1.00pm, delivery can be made within 1-2 working days. If the items are not in stock, we will inform you via email how long it will take or ask for your confirmation if there's a long lead time.


We offer 30-day returns for unwanted items - please email us to request a returns number which will need to be quoted when the items are returned. For faulty items or items damaged in transit, please advise via email, and an appropriate returns number will be provided. Full details concerning returns and refunds can be found via our Terms and Conditions.