ALFA 95 FLAT | HRFL HEAT RECOVERY Counterflow plate heat recovery exchanger BASIC FEATURES ALFA 95 FLAT Highly efficient under-ceiling heat recovery unit designed for applications in commercial interiors, such as shops, offices, coffee bars, restaurants and sport facilities. – 4 sizes with air flows: 400, 700, 1500 and 2000 m3/h – Ecodesign directive 1253/2014 compliant – All sizes complies with criteria for Passive House Component certification – Sizes 700, 1500 and 2000m3/h are certified components by the Passive House Institute – Aluminium counterflow exchanger with heat recovery efficiency of up to 93 % (EN308) – Energy-efficient EC fans with low SFP and quiet operation – Compact size with low installation height – Integrated electric pre-heater (optional) – Integrated electric/water after-heater, modular C/O or DX coils concept (optional) –A irGENIO Superior control system with an option of CAV, VAV or DCV mode, other supplementary modes, antifreeze protection, BMS control via ModBUS RTU, TCP or BACnet. ALFA 95 FLAT heat recovery unit is designed to be operated in a dry indoor environment (relative humidity not exceeding 80 %) and at an ambient temperature in the range from +5 °C up to +60 °C. The unit is designed for transporting standard atmospheric air that is free of dust, grease, chemical emissions and other impurities. The transported air relative humidity must not exceed 90 %. The casing of the unit is made from sandwich panels. When unit installed in the duct system its IP rating is 20. The design of the ventilation project must be always designed by a qualified HVAC designer, engineer

Operational diagram Funktionsschema ALFA 95 FLAT | HRFL HEAT RECOVERY Operational diagram Operational diagram ODA Funktionsschema Fan / Ventilator Heat exchanger / Wärmetauscher Filter / Filter Regulation / die Regulation Condesate exhaust / Kondensatausscheidung Afterheater / Nachheizeinrichtung / DX / CO By-pass flap / By-pass Klappe Preheater / Vorwärmer 1 Fan / Ventilator Heat exchanger / Wärmetauscher Filter / Filter Regulation / die Regulation Condesate exhaust / Kondensatausscheidung Afterheater / Nachheizeinrichtung / DX / CO By-pass flap / By-pass Klappe Preheater / Vorwärmer Condensate...

ALFA 95 FLAT | HRFL HEAT RECOVERY PRIMARY PARAMETERS SFP=Unit Power input/supply airflow (kW/m3/s)

ALFA 95 FLAT | HRFL HEAT RECOVERY PRIMARY PARAMETERS SFP=Unit Power input/supply airflow (kW/m3/s)

ALFA 95 FLAT | HRFL HEAT RECOVERY Noise specifications: HRFL2-040 Sound power level per frequency band Airflow [m³/h] Sound power level per frequency band Branch HRFL2-070 Sound power level per frequency band Airflow [m³/h] Sound power level per frequency band Branch

ALFA 95 FLAT | HRFL HEAT RECOVERY Noise specifications: HRFL2-150 Sound power level per frequency band Airflow [m³/h] Sound power level per frequency band Branch HRFL2-200 Sound power level per frequency band Airflow [m³/h] Sound power level per frequency band Branch

ALFA 95 FLAT | HRFL HEAT RECOVERY Basic technical parameters of the heat recovery units: Model without electric pre-heater: Model without coil / with water heating coil / C-O coil / DX coil Type Model with electric coil (post-heater) Model with electric pre-heater: Model without coil / with water heating coil / with change-over coil Type Model with electric preheater (post-heater) Type Type Without reheating With electric reheating With water reheating

ALFA 95 FLAT | HRFL HEAT RECOVERY Characteristics of electric motors (1 fan only) Speed [r/min] Insulation class Characteristics of electric coil Type Characteristics of electric preheater Characteristics of water heating coil Type Water pressure loss [kPa] Connection diameter * For water temperature gradient 90/70 and inlet air temperature 15°C. Correction coefficients of the powers of the hot water coil* Air inlet temperature [°C] * To apply to the rated power in the characteristics of the LPH

ALFA 95 FLAT | HRFL HEAT RECOVERY Characteristics of water cooling / heating coil (C/O) Type Water pressure loss [kPa] Connection diameter *F or water temperature gradient 60/40 and inlet air temperature 15°C. Characteristics of water cooling / heating coil (C/O) Type Water pressure loss [kPa] Connection diameter *F or water temperature gradient 7/12 and inlet air temperature 25°C with 70% of relative humidity. Correction coefficients of the powers of the hot water coil (C/O)* Air inlet temperature [°C] 0 5 10 15 20 * To apply to the rated power in the characteristics of the water coil. Correction...

ALFA 95 FLAT | HRFL HEAT RECOVERY Characteristics of direct evaporator (DX) Refrigerant R32 Type Refrigerant pressure loss [kPa] Connection diameter of gas coil Connection diameter of liquid coil * For inlet air temperature 25°C with 47% of relative humidity and evaporation temperature 5°C, refrigerant R32. Refrigerant pressure loss [kPa] Connection diameter of gas coil Connection diameter of liquid coil * For inlet air temperature 25°C with 47% of relative humidity and evaporation temperature 5°C, refrigerant R410A. INSTALLATION AND ASSEMBLY ALFA FLAT units must be installed according to the...

ALFA 95 FLAT | HRFL OUTDOOR ENVIROMENT OUTDOOR ENVIROMENT INDOOR ENVIROMENT ABAB AAAA INDOOR ENVIROMENT OUTDOOR ENVIROMENT INDOOR ENVIROMENT

HEAT RECOVERY ALFA 95 FLAT | HRFL WIRING DIAGRAMS SAFETY THERMOSTAT POSTHEATING SAFETY PREHEATING THERMOSTAT LF1 - FLAP INLET (output L-open), LF2 - FLAP OUTLET ( output L-open) RUN CONTACT (output - NO/NC settable) ERROR CONTACT (output NO) PREHEATER WATER PUMP (11 - Lint, 12 - Lout) EXTERNAL CONTROL ON/OFF (input NC) OUTPUT PERFORMANCE OF POSTHEATING (0-10V OR PWM) WATER PUMP (1 - Lint, 2 - Lout) HEAT PUMP CONTROL settable (output - ON/OFF) ADIABATIC MODULE (output - ON/OFF) COOL / HEAT settable (CO = NC/NO - DX = output settable) ADIABATIC MODULE ERROR (input NO) HEAT PUMP DEFROST settable...