Description
Description
Construction features
IUT indoor unit
Indoor unit for floor installation:
• Structure: made of galvanised and painted steel plate.
• Water side heat exchanger: adequately insulated stainless steel plates, complete with antifreeze heater.
• Pump unit complete with: EC circulator, automatic air vent valve, safety valve, flow switch, expansion tank, pressure gauge, water filter.
• 3-way valve for the production of domestic hot water.
• Supplementary electrical resistance, system side.
• Domestic hot water buffer tank, complete with water temperature probe, anode and electrical resistance (3 kW).
• Control: electronic with microprocessor and touch-screen control panel for integrated management of the heat pump and the heating system, according to the various requirements relating to the use of the energy sources:
– Domestic hot water production.
– Rapid heating function for domestic hot water.
– Anti-legionella cycle function, with activation timer.
– Auxiliary or supplementary heat source management.
– Operation in silent mode with timer.
– Weekly and daily time bands.
– Holiday mode and antifreeze function.
– Power consumption limiting function.
– 2-way on/off valve management for shutting off a part of the system, in heating or cooling mode.
– Management through room thermostat, as an alternative to the touch-screen panel.
– Unit activation from external contact (remote ON/OFF).
• Unit complete with:
– Outdoor temperature probe for set-point compensation.
– Remote ambient air temperature probe, for managing the unit according to the ambient set-point.
– Communication cable between outdoor and indoor units.
• RS485 interface for serial communication with other devices (Modbus RTU protocol).
• iOS and Android APP for managing the unit via smartphone and tablet.
MHAITI outdoor unit
• Compressor: hermetic, twin rotary DC Inverter with steam injection, complete with thermal protection and casing heater
• Expansion valve: electronic.
• Cooling circuit with economiser
• Air side heat exchanger: finned coil with copper pipes and aluminium-manganese fins with Golden Fin anti-corrosion treatment in epoxy resin and hydrophilic treatment.
• Fan: axial type impeller with DC brushless motors, equipped with internal thermal protection, accident protection grilles and proportional electronic device for continuous fan rotation speed regulation.
• Structure: made of galvanised and painted steel plate RAL9002, complete with condensate drain pan and unit base antifreeze heater.
Models
MHAITI+IUT: 2-section air-water heat pump.
Separately supplied accessories
KSA – Rubber anti-vibration mounts.
Technical data
| MHAITI outdoor unit | 104 | 106 | 108 | 110 | ||
| IUT indoor unit | 06 | 06 | 10 | 10 | ||
| ❶ | Heating capacity | kW | 4 | 5,9 | 8 | 9,5 |
| ❶ | Absorbed power | kW | 1,02 | 1,51 | 2,14 | 2,64 |
| ❶ | C.O.P. | 3,92 | 3,91 | 3,74 | 3,6 | |
| ❷ | Heating capacity | kW | 4 | 6 | 8 | 9,5 |
| ❷ | Absorbed power | kW | 0,78 | 1,2 | 1,7 | 2,07 |
| ❷ | C.O.P. | 5,13 | 5,00 | 4,71 | 4,59 | |
| ❸ | Cooling capacity | kW | 3,2 | 4,1 | 5,3 | 6,5 |
| ❸ | Absorbed power | kW | 0,94 | 1,28 | 1,73 | 2,27 |
| ❸ | E.E.R. | 3,42 | 3,2 | 3,06 | 2,86 | |
| ❹ | Cooling capacity | kW | 3,8 | 5,8 | 7,0 | 8,5 |
| ❹ | Absorbed power | kW | 0,82 | 1,32 | 1,75 | 2,24 |
| ❹ | E.E.R. | 4,63 | 4,40 | 4,00 | 3,79 | |
| ❺ | Sound pressure (external unit) | dB(A) | 37 | 37 | 41 | 42 |
| ❸ | Available circulator head | kPa | 73 | 70 | 66 | 58 |
| DHW tank capacity | l | 185 | 185 | 185 | 185 | |
| Electrical supply | V-ph-Hz | 230-1-50 | 230-1-50 | 230-1-50 | 230-1-50 | |
| Internal unit electrical resistance | kW | 2 x 1,5 | 2 x 1,5 | 2 x 3,0 | 2 x 3,0 | |
| Refrigeration lines max Height difference / length | m / m | 20 / 15 | 20 / 15 | 25 / 15 | 25 / 15 | |
| DIMENSIONS AND WEIGHTS | ||||||
| MHAITI outdoor unit | 104 | 106 | 108 | 110 | ||
| L – Width | mm | 975 | 975 | 980 | 980 | |
| H – Height | mm | 702 | 702 | 788 | 788 | |
| P – Depth | mm | 396 | 396 | 427 | 427 | |
| Weight | kg | 55 | 55 | 82 | 82 | |
| IUT indoor unit | 06 | 06 | 10 | 10 | ||
| L – Width | mm | 600 | 600 | 600 | 600 | |
| H – Height | mm | 1750 | 1750 | 1750 | 1750 | |
| P – Depth | mm | 600 | 600 | 600 | 600 | |
| Empty weight | kg | 209 | 209 | 209 | 209 | |
| ENERGY PERFORMANCE | MHAITI | 104 | 106 | 108 | 110 | |
| IUT | 06 | 06 | 10 | 10 | ||
| AMBIENT HEATING – Average application temperature 55°C | ||||||
| ③ | Pdesignh (EN 14825) | kW | 5 | 5 | 7 | 8 |
| ③ | SCOP (EN 14825) | 3,27 | 3,25 | 3,31 | 3,25 | |
| ④ | ηs | % | 128 | 127 | 129 | 127 |
| ④ | Energy class | A++ | A++ | A++ | A++ | |
| WATER HEATING | ||||||
| Load profile | L | L | L | L | ||
| ⑤ | ηwh | % | 101 | 101 | 89 | 89 |
| ⑤ | Energy class | A | A | A | A | |
- Data at the following conditions:
- ❶ Air: 7°C D.B. – 6°C W.B. – Water: 40/45°C.
- ❷ Air: 7°C D.B. – 6°C W.B. – Water: 30/35°C.
- ❸ Air: 35°C D.B. – Water: 12/7°C.
- ❹ Air: 35°C D.B. – Water: 23/18°C.
- ❺ In open field (Q = 2) at 5 m from the unit.
- ❻ Weight refers to the most complete set up.
- Performance according to EN 14511
- ③ In Average climatic conditions.
- ④ Seasonal energy efficiency: ambient heating in Average climate (EU Regulations No.811/2013 and No.813/2013)
- ⑤ Water heating energy efficiency in Average climate (+7°C). (Regulations (EU) No.811/2013 and No.813/2013)





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