well this is his first install. bad thermostat, bad circ pump, wrong fittings in the storage, wrong main circ, no auto-mag, why can't they give us a piping diagram that is simple and easy to understand. two weeks of burning in idle and creosote and no heat coming into the storage. very frustrating for a carpenter with no knowledge of plumbing. I understand hot and cold but what the f*^& is a auto-mag. i want to burn hot with no emission's. maybe they have got it right now. i called Deloris's at bio heat and she was a sympathetic listener. it got results, they were here today and hopefully it is right now :grrr: . sweetheat