MACUK RSM PRO is a substation for heating and instantaneous domestic hot water. It is suitable for apartments, single family house and central heating systems.Its installation is fast and easy. It is ready to be connected with the hydraulic connections on the premises.Several accessories are available to fulfill all equirements.- heat meter and cold water meter with pulse exit M-Bus ready- heat meter and cold water meter with radio transmitter- ultrasonic heat meter- thermostatic kit 20-50°C suitable for low temperature heating systems- thermostatic kit 40-70°C suitable for high temperature heating systems- electronic control kit consisting of: electric servomotor 230V, digital heating controller and remote control with room sensor.The production of domestic hot water is controlled by a proportional thermostatic valve, by the heat exchanger and thanks the fied setting by-pass which ensures an instantaneous production of DHW at the right temperature, avoiding water waste and delay.Differential valve (adjustable flw from 400 l/h to 1.400 l/h) for balancing the flw of the modules indipendently to the head of the primary circuit.