Protection relays for circulation pump in the heating system
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answer130
viewsIn the garage with central heating there is no water circulation (analysis at the end of the row, and there were no washers in the previous boxes), it was decided to put a circulation pump (type UNIPUMP UPС 25-60 130). Assuming accidents / repairs in garages in the winter I want to protect against dry pump operation. What advise to establish that in this case the pump would be turned off?
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Good day, Sergey.
The diameter of the piping pipes is not indicated by you, but I will not focus on the pump. Therefore, I think you should choose a flow switch from the WF-15 ~ 50 series. The numbers after the series designation are Øcondition. Intermediate values are 20, 25, 32, 40. The power range of electric motors that the relay can turn off is 200 ~ 1200 watts. The maximum temperature of the heat carrier is 110 degrees. Screenshots: appearance and characteristics, as well as the WF connection diagram - attached.