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radiant no flow

jim_160 Member Posts: 24
i've got a radiant system with four seperate zoned manifolds. each manifold has a 008, with a honeywell thermostatic manual mixing valve. it has been in operation for 8-10 yrs. the piping off the boiler is a supply out to manifolds and a seperate return back from the manifolds to boiler. there is a hot by-pass from supply to return @ boiler to mantain 135' at return. the bypass is thermostatic with a mixing valve and 007. ive purge air from system, but i can't get flow through manifolds out to system and back to boiler. i can send pictures if you need



  • SpeyFitter
    SpeyFitter Member Posts: 422
    Send pictures

    We need pics!
    Class 'A' Gas Fitter - Certified Hydronic Systems Designer - Journeyman Plumber
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