Ground/water heat pump Thermia MEGA M (IVAR.HP) – 11–44 kW, output up to 65 °C

Product detailed description

Thermia MEGA M is an inverter heat pump ground/water from the IVAR.HP MEGA range designed for larger buildings and commercial use. The compressor with a frequency inverter continuously adjusts the output in the range of 11–44 kW (B0/W35) according to the immediate heat demand, which is why the unit is designed to cover 100% of the annual heat demand. The water temperature at the outlet reaches up to 65 °C, making it suitable for both new construction and renovation.

Features

• heating, cooling and hot water preparation in one unit
• HGW – hot water is heated via a superheated steam heat exchanger simultaneously with heating
• control system GENESIS with a color touch display, up to 5 mixed circuits, WCS and TWC technologies
• built-in web server for remote monitoring Thermia Online, Modbus for the building management system (BMS), Smart Grid for photovoltaics
• cascade connection of multiple units practically without limitation, up to the MW range

Technology and efficiency

Quiet Danfoss scroll compressor with speed inverter, electronic expansion valve, stainless steel plate heat exchangers and circulation pumps in energy class A; special design with rubber compensators limits vibrations. Refrigerant R410A, charge 4.4 kg. At B0/W35 it delivers 26.71 kW with COP 4.60, seasonal SCOP is 5.86 (35 °C) and 4.55 (55 °C) according to EN 14825 for cold climate, energy class A+++. Sound power level 41–56 dB(A).

Installation

The unit with dimensions 692 × 796 × 1652 mm (w × h × d, without connecting nozzles) and weight 310 kg is installed horizontally on a concrete floor at least 100 mm thick, away from the corner of the room and walls adjacent to noise-sensitive areas. Connections: antifreeze liquid 42 mm, heating system 35 mm, superheated steam circuit 28 mm. A filter with max. 0.7 mm mesh should be installed in the return line of the system and in the antifreeze supply line, and flexible hoses are recommended for connection. Power supply 400 V 3N~, circuit breaker 40 A, maximum pressure of both circuits 6 bar.

Warning: The design uses the calculation software HPC 2. Installation, electrical connection and commissioning must be carried out by an authorized specialist.

Technical specifications

Frequently asked questions

Is the connecting equipment part of the delivery?
No. The package includes the heat pump, documentation, a set of sound-dampening plates and a set of sensors (external sensor and supply pipe sensor). The connecting equipment IVAR.TER-PS is ordered separately – for this model it has the code IHP08645680.

Can MEGA be used with a water/water source?
Yes, but with the water/water version it is necessary to design a custom intermediate heat exchanger and use a flow sensor. The immersion pump of the source can be controlled by a 0–10 V signal according to the temperature difference on the intermediate heat exchanger using an additional EM3 card.

Which antifreeze is used in the primary circuit?
The manufacturer specifies an ethanol and water solution with a freezing point of −17 °C (±2 °C). Before use, it is necessary to check local regulations; the maximum working pressure of the antifreeze circuit is 6 bar.