tropostudio
Member
I'm installing my Westinghouse WBRUNG80 boiler in a direct pumped, homerun setup with a TRV at each panel radiator. Single CH circulation pump is a Grundfos Alpha. No hydraulic separator. It also has an indirect DHW tank with a 3 speed Grundfos pump.
Boiler manual says it must maintain minimum flow across the heat exchanger, but that number isn't published anywhere.
There is a pressure vs flow graph that cuts out at 1 gpm, but I don't think that qualifies as minimum required flow, does it? Do I need to leave install a differential pressure regulator on a bypass loop to insure minimum flow across the heat exchanger (whatever the value may be)?
Boiler manual says it must maintain minimum flow across the heat exchanger, but that number isn't published anywhere.
There is a pressure vs flow graph that cuts out at 1 gpm, but I don't think that qualifies as minimum required flow, does it? Do I need to leave install a differential pressure regulator on a bypass loop to insure minimum flow across the heat exchanger (whatever the value may be)?
Last edited: