
E.C.A Arceus EK 15, MT Electric Combi Boiler – 15kW
E.C.A Arceus EK 15, MT Electric Combi Boiler – 15kW (MPN: 8116271010) is a high‑efficiency, wall‑mounted electric combi boiler designed for properties without a gas supply or where an all‑electric solution is preferred. The MT (Monothermic Type) configuration incorporates two water heating circuits within a stainless steel tank‑formed heat exchanger, enabling the boiler to act as both a central heating source and instantaneous domestic hot water heater in one compact appliance.
Key Features
- 15kW electric combi boiler – delivers both central heating and instantaneous domestic hot water from a single compact wall‑hung unit.
- Monothermic tank design – dual water circuits inside a stainless steel tank‑type heat exchanger provide separate CH and DHW functions.
- 100% point‑of‑use efficiency – all electrical input is converted to heat on site, with no flue losses or combustion emissions.
- Staged electric elements – multiple resistors are switched in stages for simple, reliable modulation and smoother load management.
- Range‑rateable output – heating output can be range‑rated to better match property demand and improve ErP efficiency rating when configured.
- Very low noise level – quiet operation at approximately 38 dB makes it suitable for use in kitchens, cupboards and utility rooms.
- WRAS‑approved – certified for use on UK potable water systems.
- Built‑in smart modulator – optimises staging of elements, helping maintain stable temperatures and improve comfort and efficiency.
- OpenTherm compatible – supports OpenTherm smart room thermostats, improving control and offering potential 15–20% energy savings.
- Automatic filling loop and bypass – factory‑integrated components simplify installation and help protect the boiler and system.
- Frost protection & ECO modes – built‑in frost protection and ECO/COMFORT modes on the domestic hot water circuit.
Performance & Applications
- Central heating output: approx. 14.9kW (about 50,840 BTU/h), suitable for well‑insulated small to medium properties (typical heated area up to ~110–120 m², load‑dependent).
- Domestic hot water: maximum DHW output around 14.9kW with a flow rate up to about 9.3 litres per minute at a 35°C temperature rise.
- ErP ratings: ErP D for space heating seasonal efficiency, ErP C for domestic hot water efficiency.
- Ideal applications: all‑electric homes, apartments, off‑grid and low‑carbon projects, or properties pairing electric heating with PV, batteries and smart tariffs.
Technical Highlights
- Manufacturer: E.C.A
- Model: Arceus EK 15, MT Electric Combi Boiler
- MPN: 8116271010
- GTIN / EAN‑13: 8682182000980
- Nominal output: 14.9–15kW (central heating and DHW)
- Supply options: 400V three‑phase or 230V single‑phase (up to 15kW, configured according to site supply and wiring design)
- Boiler type: wall‑hung electric combi, sealed system
- Heat exchanger: stainless steel tank‑type, with electric elements that can be removed and cleaned
- Controls: digital front panel with LCD, built‑in diagnostics, ECO/COMFORT modes, OpenTherm interface
- Safety features: 3‑bar safety valve, automatic bypass, frost protection, overheat thermostat, pressure sensor, flow sensor and error logging
- Dimensions (H x W x D): approx. 678 x 410 x 288 mm
- Weight: around 27 kg (approx. 30 kg gross with packaging)
- Warranty: typically 3–5 years depending on distributor and registration (check specific T&Cs)
- Approvals: CE, WRAS and other regional conformity marks.
Installation Notes
- Installation and commissioning must be carried out by a suitably qualified engineer in accordance with the E.C.A installation manual and local electrical and plumbing regulations.
- Designed for sealed central heating systems; ensure an appropriately sized expansion vessel, safety valve and system treatment (inhibitor) are provided.
- Electrical supply, cable sizing and protective devices must be correctly selected for the 15kW load and supply type (single‑phase or three‑phase).
- For best efficiency and comfort, pair the boiler with an OpenTherm thermostat and consider integration with smart tariffs or home energy management where available.
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E.C.A Arceus EK 15, MT Electric Combi Boiler – 15kW
E.C.A Arceus EK 15, MT Electric Combi Boiler – 15kW (MPN: 8116271010) is a high‑efficiency, wall‑mounted electric combi boiler designed for properties without a gas supply or where an all‑electric solution is preferred. The MT (Monothermic Type) configuration incorporates two water heating circuits within a stainless steel tank‑formed heat exchanger, enabling the boiler to act as both a central heating source and instantaneous domestic hot water heater in one compact appliance.
Key Features
- 15kW electric combi boiler – delivers both central heating and instantaneous domestic hot water from a single compact wall‑hung unit.
- Monothermic tank design – dual water circuits inside a stainless steel tank‑type heat exchanger provide separate CH and DHW functions.
- 100% point‑of‑use efficiency – all electrical input is converted to heat on site, with no flue losses or combustion emissions.
- Staged electric elements – multiple resistors are switched in stages for simple, reliable modulation and smoother load management.
- Range‑rateable output – heating output can be range‑rated to better match property demand and improve ErP efficiency rating when configured.
- Very low noise level – quiet operation at approximately 38 dB makes it suitable for use in kitchens, cupboards and utility rooms.
- WRAS‑approved – certified for use on UK potable water systems.
- Built‑in smart modulator – optimises staging of elements, helping maintain stable temperatures and improve comfort and efficiency.
- OpenTherm compatible – supports OpenTherm smart room thermostats, improving control and offering potential 15–20% energy savings.
- Automatic filling loop and bypass – factory‑integrated components simplify installation and help protect the boiler and system.
- Frost protection & ECO modes – built‑in frost protection and ECO/COMFORT modes on the domestic hot water circuit.
Performance & Applications
- Central heating output: approx. 14.9kW (about 50,840 BTU/h), suitable for well‑insulated small to medium properties (typical heated area up to ~110–120 m², load‑dependent).
- Domestic hot water: maximum DHW output around 14.9kW with a flow rate up to about 9.3 litres per minute at a 35°C temperature rise.
- ErP ratings: ErP D for space heating seasonal efficiency, ErP C for domestic hot water efficiency.
- Ideal applications: all‑electric homes, apartments, off‑grid and low‑carbon projects, or properties pairing electric heating with PV, batteries and smart tariffs.
Technical Highlights
- Manufacturer: E.C.A
- Model: Arceus EK 15, MT Electric Combi Boiler
- MPN: 8116271010
- GTIN / EAN‑13: 8682182000980
- Nominal output: 14.9–15kW (central heating and DHW)
- Supply options: 400V three‑phase or 230V single‑phase (up to 15kW, configured according to site supply and wiring design)
- Boiler type: wall‑hung electric combi, sealed system
- Heat exchanger: stainless steel tank‑type, with electric elements that can be removed and cleaned
- Controls: digital front panel with LCD, built‑in diagnostics, ECO/COMFORT modes, OpenTherm interface
- Safety features: 3‑bar safety valve, automatic bypass, frost protection, overheat thermostat, pressure sensor, flow sensor and error logging
- Dimensions (H x W x D): approx. 678 x 410 x 288 mm
- Weight: around 27 kg (approx. 30 kg gross with packaging)
- Warranty: typically 3–5 years depending on distributor and registration (check specific T&Cs)
- Approvals: CE, WRAS and other regional conformity marks.
Installation Notes
- Installation and commissioning must be carried out by a suitably qualified engineer in accordance with the E.C.A installation manual and local electrical and plumbing regulations.
- Designed for sealed central heating systems; ensure an appropriately sized expansion vessel, safety valve and system treatment (inhibitor) are provided.
- Electrical supply, cable sizing and protective devices must be correctly selected for the 15kW load and supply type (single‑phase or three‑phase).
- For best efficiency and comfort, pair the boiler with an OpenTherm thermostat and consider integration with smart tariffs or home energy management where available.
Product Information
Product Information
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Description
E.C.A Arceus EK 15, MT Electric Combi Boiler – 15kW (MPN: 8116271010) is a high‑efficiency, wall‑mounted electric combi boiler designed for properties without a gas supply or where an all‑electric solution is preferred. The MT (Monothermic Type) configuration incorporates two water heating circuits within a stainless steel tank‑formed heat exchanger, enabling the boiler to act as both a central heating source and instantaneous domestic hot water heater in one compact appliance.
Key Features
- 15kW electric combi boiler – delivers both central heating and instantaneous domestic hot water from a single compact wall‑hung unit.
- Monothermic tank design – dual water circuits inside a stainless steel tank‑type heat exchanger provide separate CH and DHW functions.
- 100% point‑of‑use efficiency – all electrical input is converted to heat on site, with no flue losses or combustion emissions.
- Staged electric elements – multiple resistors are switched in stages for simple, reliable modulation and smoother load management.
- Range‑rateable output – heating output can be range‑rated to better match property demand and improve ErP efficiency rating when configured.
- Very low noise level – quiet operation at approximately 38 dB makes it suitable for use in kitchens, cupboards and utility rooms.
- WRAS‑approved – certified for use on UK potable water systems.
- Built‑in smart modulator – optimises staging of elements, helping maintain stable temperatures and improve comfort and efficiency.
- OpenTherm compatible – supports OpenTherm smart room thermostats, improving control and offering potential 15–20% energy savings.
- Automatic filling loop and bypass – factory‑integrated components simplify installation and help protect the boiler and system.
- Frost protection & ECO modes – built‑in frost protection and ECO/COMFORT modes on the domestic hot water circuit.
Performance & Applications
- Central heating output: approx. 14.9kW (about 50,840 BTU/h), suitable for well‑insulated small to medium properties (typical heated area up to ~110–120 m², load‑dependent).
- Domestic hot water: maximum DHW output around 14.9kW with a flow rate up to about 9.3 litres per minute at a 35°C temperature rise.
- ErP ratings: ErP D for space heating seasonal efficiency, ErP C for domestic hot water efficiency.
- Ideal applications: all‑electric homes, apartments, off‑grid and low‑carbon projects, or properties pairing electric heating with PV, batteries and smart tariffs.
Technical Highlights
- Manufacturer: E.C.A
- Model: Arceus EK 15, MT Electric Combi Boiler
- MPN: 8116271010
- GTIN / EAN‑13: 8682182000980
- Nominal output: 14.9–15kW (central heating and DHW)
- Supply options: 400V three‑phase or 230V single‑phase (up to 15kW, configured according to site supply and wiring design)
- Boiler type: wall‑hung electric combi, sealed system
- Heat exchanger: stainless steel tank‑type, with electric elements that can be removed and cleaned
- Controls: digital front panel with LCD, built‑in diagnostics, ECO/COMFORT modes, OpenTherm interface
- Safety features: 3‑bar safety valve, automatic bypass, frost protection, overheat thermostat, pressure sensor, flow sensor and error logging
- Dimensions (H x W x D): approx. 678 x 410 x 288 mm
- Weight: around 27 kg (approx. 30 kg gross with packaging)
- Warranty: typically 3–5 years depending on distributor and registration (check specific T&Cs)
- Approvals: CE, WRAS and other regional conformity marks.
Installation Notes
- Installation and commissioning must be carried out by a suitably qualified engineer in accordance with the E.C.A installation manual and local electrical and plumbing regulations.
- Designed for sealed central heating systems; ensure an appropriately sized expansion vessel, safety valve and system treatment (inhibitor) are provided.
- Electrical supply, cable sizing and protective devices must be correctly selected for the 15kW load and supply type (single‑phase or three‑phase).
- For best efficiency and comfort, pair the boiler with an OpenTherm thermostat and consider integration with smart tariffs or home energy management where available.


















