K
karmannmann
Help I am working on a Biomass with District heating I have a 3phase pump for the boiler to accumulator and a single phase shunt pump these are straight forward enough I think. The head scratcher is: I have a 3 phase pump which delivers the heat to a heat exchanger in the properties and a single phase standard c h pump after the heat exchanger circulating round the property this pump will come on with a timer lifestyle or equiv I will need both this pump and the 3phase delivery pump to come on at the same time which is 100 metres away how would i wire in a contactor or any other ideas?