32 * Use a hermestic cooling tower in terms of water quality control * In order to use brine for the freezing protection, install the heat exchanger to break off the line concerned. * In order to use the open type cooling tower, install the heat exchanger to break off the line concerned. * 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. * It is recommended to provide a port used for the cleaning of horizontal drain pipes. * Considering the maintenance of the boiler, it is recommended to break off the line concerned using the heat exchanger. Hydrothermal source recirculation pump (used for the maintenance of pumps) Temperature indicating controller To heat source for heating such as boiler Heat exchanger Makeup water (Used to fill the tank as well) Makeup water (Used to fill the tank as well) Expansion tank Expansion tank Part A Part B Freezing protection heater To BS unit To BS unit To BS unit To BS unit Cooling tower (32°C/37°C) Temperature indicating controller Temperature indicating controller * In order to conduct vertical piping through three floors or more, use vertical reverse turn piping or the like to prevent air drift. * For RWEY models, provide interlock with the flow switch. (Through the pump operation signal, an operative flow switch is recommended.) Typical Installation in cold district with cooling tower, glycol and intermediary heat exchanger Detailed Water cooled VRV installation examples
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