thermia mega m manual

Geothermal heat pump for advanced applications with a capacity of up to 1400 kW Reduce your energy consumption by up to 80% Inverter technology precisely adjusts to real-time demand Cascade function up to 16 units Hot gas technology for efficient hot water production One solution for heating, domestic hot water and cooling Online – control your heat pump from anywhere Ready for building management systems (BMS) via Modbus

Energy class when the heat pump is the sole heat generator. Energy class calculated according to Eco-design Directive 811/2013

The Mega inverter-controlled commercial ground-source heat pump is the ideal choice for all types of commercial buildings with advanced heating and cooling systems and very high demands on both energy-efficiency and functionality. This makes it the perfect solution for large commercial and public buildings needing an advanced control system and special applications. With an impressive seasonal coefficient of performance (SCOP) of 5.3 (Mega XL at B0/W35, according to EN14825, cold climate) Mega enables you to reduce your energy consumption by up to 80%.

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By continuously adjusting the heat pump’s output to current demand, inverter technology enables the heat pump to supply 100% of your energy requirements. This in turn means that the user does not have to pay for any auxiliary heating. Inverters can combine large heating demand in winter and smaller hot water demand during summer, without the need for large hot water tanks. In addition, inverter technology is more friendly for power grid soft start and lower starting current. Mega is available in four output sizes:  10-33 kW, 11-44 kW, 14-59 kW and 21-88 kW. It is possible to cascade-connect up to sixteen machines to achieve up to 1400 kW. Cascade-connected pumps start one after the other depending on energy need, thus ensuring minimum energy consumption regardless of the output. With a unique feature called Energy Source Control, heating capacity is adapted to the currently available energy source (boreholes or exhaust air). Installing a Mega pays off in a short time thanks to large energy savings for both heating and cooling. With a wide range of accessories, Mega can also heat a pool and work in combination with solar panels or additional heat sources.

The large areas of glass in many modern buildings are great during the darker months of the year but often lead to overheating in summer. Passive cooling ensures a perfect indoor climate all year round. If necessary, this can be supported with active cooling using the heat pump’s compressor. Both passive and active cooling are far more economical than traditional air-conditioning systems. Mega can provide efficient cooling for your property during the summer.

Simultaneous heating and cooling enables you to reduce operating costs even more. To achieve this, multiple heat pumps are connected in parallel between hot and cold buffer tanks. The hot tanks connect to the heating zones and the cold tanks to the cooling zones. Mega then simply exchanges hot for cold, depending on the needs of the building. For example, as a hotel conference room is cooled down, the excess heat removed is re-used to produce hot water for the swimming pool or SPA. has developed a unique patent-pending method of producing domestic hot water. At the same time as water is being heated for distribution through the building’s heating system, hot water is produced at very high temperature through an extra de-superheater. This means that during the part of the year when the building is heated, you get lots of hot water at a very low cost.

The controller coordinates and controls the heating system. heat pumps work with complete precision to give your home the best possible indoor climate at the lowest possible cost. Our controller is very easy to use.

New features:

Menu and algorithms developed by New color touchscreen User friendly, intuitive menu with icons and info-graphics Full overview of temperatures from refrigerant circuit Compressor “envelope” visualization Heat curve with 7-point adjustment Plug-and-play software update via USB slot Ready for building management systems (BMS) via Modbus

Mega can be equipped with Online, a function that allows remote control and monitoring using a smartphone or computer. Our online system provides installers with comprehensive diagnostics data and also enables them to respond promptly to notifications or access a live feed on system performance. Online control and monitoring optimizes energy efficiency for property owners with buildings in different locations.

The Online app is available for both Android and iPhone.

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The advanced control system of this commercial heat pump constantly monitors all functions, providing you with a reassuring overview. Mega can communicate with other control systems (building management systems) via Modbus. It can also be controlled and monitored via a management system that gathers information on alarms, ventilation and other systems in the same building. heat pumps are designed, tested and manufactured in one of the harshest climates in Europe – Sweden. All our products are designed and built from top-quality European components with authorized consultancy for system design. We are proud to count world-leading industry specialist Danfoss among our technology partners. Mega is built on over 40 years of experience in developing and supplying heat pumps.

The new controller in the Mega heat pump boasts a color touchscreen display and user-friendly icons that are easy to understand.

Heat pumps can provide heating, domestic hot water and cooling in a single device.
Moreover, only heat pumps can heat and cool simultaneously.

The heat pump simply exchanges hot for cold, depending on the needs of the building. For example, as a hotel conference room is cooled down, the excess heat removed is re-used to produce hot water for the swimming pool or SPA.


See marketing and technical literature about Mega

WWW heat pumps for Commercial Applications

WWW Mega (2020 version) Datasheet

WWW Mega (2020 version) User Guide

WWW Mega (2020 version) Energy Label for EU

WWW Mega (2020 version) Energy Label for UK

WWW Mega (2020 version) Energy Classification – Product Fiche

The previous heating system was based on three pellet boilers with one additional oil-fired boiler as a backup heater. Heat is mainly distributed through the school via traditional radiators and, to a lesser degree, via hydronic floor heating

Elementary school benefit from heat pumps

Edane elementary school is located 15 km east of Arvika, Värmland in Sweden. The school has around 100 children, from preschool to 6th grade. The schoolyard is spacious and there is a gravel surface used for football and other games. In the winter, this area is transformed into a skating rink. The Edane school belongs to the municipality of Arvika.

“We now have a reliable, innovative system that will last for years to come and we estimate a reduction in energy consumption of around 40 MWh per year”, added Per-Inge Andersson, head of education facilities in Arvika.

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A variety of sustainable energy sources have been used to heat the building, including solar panels and geothermal heat pumps. The Competence Centre building is and must show itself smart in the way it uses energy.

Conference Centre powered by heat pumps

The Rakvere Smart House Competence Centre focuses on developing intelligent and smart technologies for the use of home and office equipment, automated building systems and building management. As well as being a local expert, it also actively participates in different European sustainable energy initiatives and advocates energy efficiency through innovative and smart buildings.

“Rakvere Smart House Competence Center – the Estonian way to sustainable and energy-efficient solutions.”

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