Greater Flexibility and Enhanced Efficiency Using a thermal store allows greater flexibility and enhanced efficiency when applying Ecodan QUHZ to different types of homes. Varying the setpoint of the thermal store, and how much of the store is heated, ensures the correct amount of hot water is produced for the home. See the example on the left. The Thermal Store Explained • The Ecodan QUHZ provides hot water to the home using a dedicated pre-plumbed 200 litre thermal store. • The thermal store is specifically designed to enable efficient production of hot water for a household of up to 4 people and uses advanced control logic to provide optimum performance at all times. • The Ecodan QUHZ Outdoor unit is connected to the thermal store by a sealed primary circuit. • Mains cold water is heated instantaneously as it passes through a plate heat exchanger and the hot water produced is sent directly to the outlets ready to use. • As domestic hot water is not stored in the system there is no risk of legionella associated with traditional hot water tanks. Greater Flexibility and Enhanced Efficiency Example Four Person Household One Bedroom Apartment OUTDOOR UNIT QUHZ-W40VA Heating Capacity at 7°C Outdoor Temperature*2 [kW] 4.0 at 2°C Outdoor Temperature*3 [kW] 4.0 Sound Pressure Level at 1 metre [dBA] 43*1 Dimensions Width [mm] 809+70*4 Depth [mm] 300+20*5 Height [mm] 715 Ecodan QUHZ Specifications Ecodan QUHZ CO2 Hot Water Heat Pump ATW Hydronic Cylinder System • CO2 refrigerant • High efficiency hot water heating performance • Class-leading, low noise operation at 43dBA*1 • Small outdoor unit, reduced footprint • Lightweight outdoor unit • Water connections only from outdoor unit to cylinder CYLINDER *6 EHPT20Q-VM2EA Nominal Water Volume [L] 200 Heating Operating Range Heating Flow Temperature [°C] 25–60 Domestic Hot Water [°C] 40–70 Dimensions Width [mm] 595 Depth [mm] 680 Height [mm] 1600 Outdoor Unit 4kW Ecodan QUHZ Cylinder 200 Litre Capacity *1 Measured at 1m from the front of the outdoor unit operating under normal heating conditions at outdoor temperature 7°CDB/ 6°CWB, outlet water temperature 55°C. *2 Under nominal operating conditions: Outdoor temp 7°CDB / 6°CWB, outlet water temp 35°C, inlet water temp 25°C. *3 Under nominal operating conditions: Outdoor temp 2°CDB / 1°CWB, outlet water temp 35°C, inlet water temp 25°C. *4 Piping cover. *5 Wire grille. *6 Cylinder includes: Flow Temperature Controller with Main Controller and Temperature Sensors, Pumps and Valves for Zone 1 and DHW use, Flow Sensor, Plate Heat Exchanger, and Booster Heater. Equivalent of Equivalent of
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