Komfovent Kombi A9 Hybrid Heating and Ventilation Unit
Technical Specifications and Performance Data
General Data
| Parameter | Value |
|---|---|
| Voltage | 3~400 V |
| Nominal current | 27.7 Amperes |
| Power cable | 5x4 square millimeters |
| IP protection class | IP40 |
| Heat pump section weight | 180 kilograms |
| Boiler and AHU section weight | 238 kilograms |
| Unit weight | 418 kilograms |
| Heat pump section dimensions (BxHxL) | 550x2005x684 millimeters |
| Boiler and AHU section dimensions (BxHxL) | 850x2005x684 millimeters |
| Maintenance space | 900 millimeters |
Connections
- Water supplied to the heating system: 1 inch
- Water returning from the heating system: 1 inch
- Heating system refill: 1/2 inch
- Domestic cold water inlet: 1/2 inch
- Domestic hot water supplied to the system: 1/2 inch
- Domestic hot water recirculation: 1/2 inch
- Ducts, heat pump section: 2 (3) x 400 x 400 millimeters
- Ducts, air handling unit: 4 x 200 millimeters
Noise Power Level (LWA)
| Condition | Value (decibels A-weighted) |
|---|---|
| Casing in heating mode (A7/W35) | 48 |
| Casing in heating mode (A7/W45) | 49.5 |
| Casing in heating mode (A7/W55) | 49 |
| Casing max. | 53.6 |
| Outdoor in heating mode (A7/W35) | 50.4 |
| Outdoor in heating mode (A7/W45) | 50.5 |
| Outdoor in heating mode (A7/W55) | 51.1 |
| Outdoor max. | 58.1 |
Accessories
- Closing damper: AGUJ-M-200 + TF230/CM230
- Silencer: ODA/EHA AGS-200-50-600-M, SUP/ETA AGS-200-50-900-M
- Noise damping / connection boxes: KSD-800x800 millimeters
- Flexible duct connection: JLSF-400 x 400 millimeters
Diagrams Description
The diagrams illustrate the Komfovent Kombi A9 unit's physical layout and connection points. The primary diagram shows a front view of the unit, distinguishing between the heat pump and Air Handling Unit (AHU) sections. Key air intake and outlet ports are labeled: ODA (Outdoor Intake), SUP (Supply Air), ETA (Extract Indoor), and EHA (Exhaust Air). The Boiler component is also indicated. Duct connection sizes are specified, such as 400x400 millimeters for the AHU. A side view diagram details overall dimensions and connection interfaces. Additional diagrams at the bottom provide specific configurations for duct connections, showing dimensions like 400x400 mm and 400x400x3 mm, and clearly labeling each air stream type.
Air Handling Unit Data
| Parameter | Value |
|---|---|
| Maximal air flow | 517 cubic meters per hour (144 liters per second) |
| Reference flow rate | 0.101 cubic meters per second |
| Reference pressure difference | 50 Pascals |
| SPI (Specific Power Input) | 0.31 W/(cubic meter per hour) |
| Thermal efficiency of heat recovery | 86 percent |
| Air heater capacity at nominal airflow (W45) | 3.4 kilowatts |
| Air cooler capacity at nominal airflow (W7) | 3.3 kilowatts |
| Electric power input of the fan drive at maximum flow rate | 137 Watts |
| Electric power input of the fan drive at reference flow rate | 59 Watts |
| Noise power level, Supply inlet (LWA) | 55 decibels (A-weighted) |
| Noise power level, Supply outlet (LWA) | 67 decibels (A-weighted) |
| Noise power level, Exhaust inlet (LWA) | 57 decibels (A-weighted) |
| Noise power level, Exhaust outlet (LWA) | 68 decibels (A-weighted) |
| Air filters dimensions (BxHxL) | 585x258x46 millimeters |
| Air filters class according to ISO 16890 (Supply/Extract) | ePM1 60% / ePM10 50% |
AHU Performance Graph
The AHU performance graph illustrates the relationship between Air flow rate (on the X-axis, shown in liters per second and cubic meters per hour) and Static Pressure (Pa) (on the Y-axis). Several performance curves are plotted, each corresponding to a specific SPI (Specific Power Input) value, such as SPI 0.6, SPI 0.5, SPI 0.4, and SPI 0.3. These curves help in understanding the unit's pressure characteristics at different airflow rates and efficiency levels.
Heat Pump Data
| Parameter | Value |
|---|---|
| Refrigerant type | R410A |
| Refrigerant charge | 4.5 kilograms |
| Nominal heating capacity | 9 kilowatts |
| Nominal cooling capacity (floor+AHU) | 7 kilowatts |
| Back-up electrical heater | 6 kilowatts |
| Number of integrated water pumps | 2 |
| Max. water pump power consumption | 75 Watts |
| Integrated expansion vessel for heating system | 12 liters |
| Internal water volume for heating system | 13.6 liters |
| Heating circuit water flow min. | 0.34 cubic meters per hour |
| Heating circuit water flow at nominal capacity | 1.54 cubic meters per hour |
| Operating water pressure min. | 0.5 bar |
| Operating water pressure max. | 3 bar |
| Operating outdoor temperature min. (heat pump only) | -25 degrees Celsius |
| Operating outdoor temperature max. (heating) | 17 degrees Celsius |
| Operating outdoor temperature min. (cooling) | 15 degrees Celsius |
| Operating outdoor temperature max. (cooling) | 30 degrees Celsius |
| Air filter dimensions (BxH) | 585x505 millimeters |
| Filter class according to ISO 16890 | coarse 65% |
Air Heat Recovery
| Outside air temperature (°C) | Winter | Summer | ||||||
|---|---|---|---|---|---|---|---|---|
| -23 | -15 | -10 | -5 | 0 | 25 | 30 | 35 | |
| After heat exchanger (°C) | 15.7 | 16.8 | 17.5 | 18.2 | 18.9 | 22.4 | 23.1 | 23.8 |
| (indoor +22 °C, 20% RH) | ||||||||
Heating/Cooling Performance Data according to EN 14511
| Condition | Capacity (kW) | Power consumption (kW) | COP | EER |
|---|---|---|---|---|
| A2/W35 | 9 | 2.14 | 4.21 | - |
| A7/W35 | 9 | 2.01 | 4.47 | - |
| A2/W45 | 9 | 2.80 | 3.21 | - |
| A7/W45 | 9 | 2.47 | 3.65 | - |
| A2/W55 | 9 | 3.17 | 2.84 | - |
| A7/W55 | 9 | 2.90 | 3.1 | - |
| A35/W18 | 7 | 1.38 | - | 5.07 |
| A35/W7* (AHU only) | 3.3 | 1.24 | - | 2.67 |
* AHU only
Heat Pump Seasonal Energy Efficiency to EN 14825
| Condition | Value |
|---|---|
| Heating average climate (+2 °C), SCOP W 35 °C | 4.86 |
| Heating warm climate (+7 °C), SCOP W 35 °C | 6.53 |
| Heating cold climate (-7 °C), SCOP W 35 °C | 4.03 |
| Cooling (35 °C), SEER W 18 °C | 5.11 |
