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E.C.A Arceus EK 15, MT Electric Combi Boiler

£1,393.20 £1,161.00
In stock
17 Available for Delivery
Not available for Click & Collect at Croydon
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This product can only be sold to customers over 18 years of age and we will require your date of birth on your account at checkout.

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MT (Monothermic Type) Arceus boilers have two water heating circuits inside and therefore operate both as a space heater (for Central Heating) and instantaneous water heater (for Domestic Hot Water). The operation principle of the boiler is based on heating the water that enters from the inlet of a tank-formed heat exchanger which contains resistor heaters through the outlet. Arceus electric boilers of different capacities contain 3,6 or 9 resistors. Unlike gas boilers which can modulate in small intervals of thermal power input within the range of minimum and nominal power input, an Arceus electric boilers heat modulates in as many stages as the number of electric resistors. Every single resistor is either "off" or "on" in full capacity, so momentary power input of the boiler during operation is simply the sum of the resistor capacities which are turned on.

As the boiler is operated to heat the home through radiators or underfloor heating installation, water coming from the central heating (CH) return connection goes through the heat exchanger tank and gets hotter. The outlet pipe of the tank is connected to the hydroblock and a 3 way valve directs water to the central heating via the central heating node.

For domestic hot water (DHW) heating, the water that leaves the tank is directed to the plate heat exchanger, discharges some of its heat to the other side of the plates and is sent back to the tank by the circulation pump. The plate heat exchangers other side is connected to the domestic how waters inlet and outlet nodes. The water gets heated during transition through the plate heat exchanger and leaves the boiler hotter from the domestic hot water node.

Arceus range rate technology can make the boiler more efficient resulting better ErP rating. e.g. 12Kw Arceus Electric Boiler heating side range rated from 12 to 6 will result in efficiency rating D to B for heating.

Key Features

  • WRAS approved (2205321).
  • Range rateable (which can improve efficiency rating when utilised).
  • Built-in Smart modulator.
  • OpenTherm technology, which makes the boiler 15-20% more efficient.
  • Atomatic filling loop .
  • Stainless steel heat exchanger with elements that can easily be removed and cleaned.
  • Economy / energy saving mode.
  • Frost protection.
Read more
Product Type
Electric Combi Boiler
Boiler Height
Boiler Width
Boiler Depth
Weight (KG)
Boiler CH Output (Kw)
Boiler CH Output (BTU)
Max DHW Output (Kw)
Domestic hot water flow rate
9.3 Litres Per Minute @ 35°C
ErP Heating Rating
D Rated for Heating
ErP Hot Water Rating
C Rated for Hot Water
Manufacturers Warranty
3 Years (Subject to Manufacturers T&C's)
Manufacturers brochure PDF File
User Guide File
Customer Questions
What are the internal and external sizes of the BoilerBox

Inner - 76.8cm L x 57cm W x 41.5cm H - Outer - 80cm L x 60cm W x 44.5cm H

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