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Heat pump Hitachi air H2O 600 S Combi 8 kW with 220L boiler (air-water)
Hitachi airH2O 600 S Combi HIT-RWD-3.0RW3E-220S / HIT-RAS-3.0WHVRP2E air-to-water heat pump with 220 L cylinder, 8 kW
Hitachi airH2O 600 S Combi is a high-efficiency split type air-to-water heat pump designed for space heating and domestic hot water production in private houses and residential buildings. The system includes an indoor hydraulic unit with an integrated 220 litre stainless steel domestic hot water cylinder and an outdoor unit that efficiently extracts heat from outdoor air.
The HIT-RWD-3.0RW3E-220S / HIT-RAS-3.0WHVRP2E model provides 8.0 kW nominal heating capacity at A7/W35 conditions and is suitable for both underfloor heating and radiator systems. The system uses R32 refrigerant and offers high seasonal efficiency with an energy efficiency class of A+++ / A++ in heating mode.
The indoor unit includes a domestic hot water cylinder, electric backup heater, expansion vessel, circulation pump and control system, making it a compact and practical solution for new buildings and heating system renovation.
Main benefits
- Split type air-to-water heat pump for heating and domestic hot water
- Integrated 220 L domestic hot water cylinder
- Stainless steel cylinder for long service life
- Nominal heating capacity 8.0 kW
- Energy efficiency class A+++ / A++
- SCOP up to 4.44 for low temperature heating
- Uses R32 refrigerant
- 3 kW electric backup heater for heating
- 2.7 kW electric heater for domestic hot water
- Built-in 6 L expansion vessel
- Compact indoor unit with integrated system components
- Suitable for underfloor heating, radiators and hot water production
- Good solution for new buildings and heating system renovation
Technical information
| Parameter | Value |
|---|---|
| Manufacturer | Hitachi |
| Series | airH2O 600 S Combi |
| Product type | Split type air-to-water heat pump |
| Indoor unit | HIT-RWD-3.0RW3E-220S |
| Outdoor unit | HIT-RAS-3.0WHVRP2E |
| Nominal heating capacity | 8.0 kW |
| Heating capacity A7/W35 min./nom./max. | 2.1 / 8.0 / 11.0 kW |
| Heating capacity -7 °C / W35 nom./max. | 5.8 / 7.5 kW |
| Heating capacity -7 °C / W55 nom./max. | 5.0 / 6.0 kW |
| COP A7/W35 | 4.67 |
| SCOP 35 °C | 4.44 |
| SCOP 55 °C | 3.20 |
| Energy efficiency class 35 °C / 55 °C | A+++ / A++ |
| Domestic hot water cylinder | 220 L |
| Cylinder material | Stainless steel |
| Domestic hot water load profile | L |
| Domestic hot water COP | 3.10 |
| Domestic hot water energy class | A+ |
| Domestic hot water temperature range | 30–55 °C |
| Max. hot water volume at 40 °C | up to 283 L |
| Electric backup heater for heating | 3 kW, 1+1+1 kW |
| Electric heater for domestic hot water | 2.7 kW |
| Expansion vessel | 6 L |
| Refrigerant | R32 |
| Indoor unit dimensions H × W × D | 1796 × 595 × 590 mm |
| Indoor unit weight | 108 kg |
| Indoor unit sound pressure level | 30 dB(A) |
| Outdoor unit dimensions H × W × D | 628 × 882 × 305 mm |
| Outdoor unit weight | 45 kg |
| Outdoor unit sound pressure / sound power | 28 / 54 dB(A) |
| Heating water temperature range | 20–60 °C |
| Cooling operating range | +10 to +46 °C |
| Heating operating range | -20 to +25 °C |
| Domestic hot water operating range | -20 to +35 °C |
| Heating connections | G 1” |
| Domestic hot water connections | G 3/4” |
| Refrigerant pipe connections | 1/4” + 1/2” |
| Pipe length min./max. | 3–40 m |
| Maximum height difference | 20 m |
| Refrigerant charge | R32 / 1.2 kg |
| Compressor | Rotary DC Inverter |
| Indoor unit power supply | 230 V / 1 phase / 50 Hz |
| Outdoor unit power supply | 230 V / 1 phase / 50 Hz |
| Outdoor unit maximum current | 16.5 A |
| Recommended outdoor unit cable | 3G4, up to 34 m |
| Indoor unit maximum current with heaters | 25.6 A |
| Recommended indoor unit cable | 3G6, up to 28 m |
| Controller | PC-ARFH3E, included |
Application
Suitable for private house heating, domestic hot water production, underfloor heating systems, radiator heating systems and renovation of existing heating installations.