265 Another purpose for Daikin high capacity heat pumps Centralised solutions Centralised applications integrate a central source of energy for heating and hot water. Cascade solution is a type of centralised system in which one outdoor unit supplies energy to multiple apartments. Each apartment still includes an indoor unit as control center. In a cascade solution, one larger capacity outdoor unit provides energy to multiple apartments. This larger outdoor unit ranges from 11 to 18 kW class, compared to individual heat pumps up to 8 kW. Each outdoor unit is connected to the other in order to form a central source of energy that it suitable for a total of up to 50 kW. Specific rules apply for the installation of such a system. Applicable units Daikin Altherma 3 H HT + wall mounted indoor unit Daikin Altherma 3 R + wall mounted indoor unit Daikin Altherma 3 M monobloc Hydrosplit connection With Daikin Altherma 3 H HT, you only get water connections to install the outdoor and the indoor units. The unit is available in class 14, 16 and 18 kW and delivers a LWT up to 70°C, fitting with radiators. Cascade controller Daikin provides a universal centralised controller for cascade EKKCC9-W to be used in combination with the gateway DCOM-LT/IO. The DCOM gateway is an interface for the BMS integration. It offers: J Modbus communication including the compatibility with EKCC9-W for sequencing applications J Voltage control J Modbus control Monobloc Daikin Altherma 3 M also runs low LWT under 60°C. The monobloc has the extra advantage to save space inside: indeed no indoor unit is necessary if the domestic hot water tank is installed in the communal space. Refrigerant connection Daikin Altherma 3 R refrigerant split unit is available in class 11, 14 and 16 and delivers a LWT under 60°C. The possibility to run low LWT allows for further energy saving by using underfloor heating or heat pump convectors as heating or cooling emitters.
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