34 * In order to use the chiller for cooling operation, install the heat exchanger to break off the line concerned. * In order to conduct vertical piping through three floors or more, use vertical reverse turn piping or the like to prevent air drift. Chiller (12 °C/7°C) Makeup water (Used to fill the tank as well) Temperature (Used to fill the tank as well) Makeup water (Used to fill the tank as well) Expansion tank Expansion tank To other system * 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 * For RWEY models, provide interlock with the flow switch. (Through the pump operation signal, an operative flow switch is recommended.) Temperature indicating controller * Considering the maintenance of the boiler, it is recommended to break off the line concerned using the heat exchanger. To heat source for heating such as boiler Heat exchanger Hydrothermal source recirculation pump (used for the maintenance of pumps) Typical installation with chiller instead of cooling tower
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