Hi

In a upcoming project I need to control two heat exchangers - one for heating and one for chilling. I will use one physical probe and one virtual - the physical for heat and the virtual for chilling. The temperature probe will be mounted on the flow line and the feed temperature will be controlled. I want to avoid solenoid valves on the primary circuit on each exchanger - instead use a three or two way valve controlled by a 1-10 V. Heath exchanger and cold exchanger will be in serie and the desired values will be chosen in a way that the two exchanger not contradict each other. In order to get an 1-10 signal for the chiller exchanger valve in the primary circuit I can use the 1-10 V for the propeller breeze but I can´t find any option to control the heath exchanger valve on the primary circuit with help of 1-10 V. There is a way to do it with your new/old PTC (two L ports) - but I can´t find a way to do it with heath exchangers. Any ideas ?


Sincerely Lasse