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Wow! B&G #72 comfort control regulator
To begin, I only see 1 hydronic to 100 forced airs in my area but in 35 years this is a new control to me. It was abandoned long ago but I did manage to get the complete outdoor unit. It regulated a mixing valve for radiant and had an odd little manifold with two 1/4 inch copper lines at the outdoor section. I have searched and searched for some info on how this control worked and have come up blank.
Does anyone have a link or info on this control?