36 Makeup water (Used to fill the tank as well) Makeup water (Used to fill the tank as well) Expansion tank Temperature indicating controller Temperature indicating controller Temperature indicating controller * In order to use brine for the freezing protection, install the heat exchanger to break off the line concerned. * In order to provide two or more hydrothermal systems (e.g. mainly heating for the north side system and mainly cooling on the south side), integrate the multiple systems into a single system, thus allowing for the heat recovery even between the water vs. water systems. * It is recommended to provide a port used for the cleaning of horizontal drain pipes. *For RWEY models, provide interlock with the flow switch. (Through the pump operation signal, an operative flow switch is recommended.) * Use a hermestic cooling tower in terms of water quality control * On each floor, If multiple units are installed or the units are installed far away from each other, use horizontal reverse return piping or a constant flow control valve to prevent air drift. To BS unit To BS unit To BS unit To BS unit Cooling (mainly for cooling) Heating (mainly for cooling) Open/Closed of valve In-between seasons (cooling/heating combination) Operation mode T1 set value T2 set value T3 set value 15°C 33°C, 31°C 25°C 20°C 33°C, 31°C 40°C Pump Temperature controller Three-way valve (mixed type) Y strainer Flexible joint Pressure gauge Thermometer Flow switch Cooling tower (32°C/37°C) Typical Installation with heat recovery from multiple systems through water circuit
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