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PS...it turns out S2 is what controls the cycling of the burner, not a timer. After the output air reaches about 160 deg. it is turned off to cool. This is documented at the top of pg. 0003 00-4 "Heating Modes" Great response Larry, I have had the same problems with 2 of the 9 heaters I...

There are two pumps they used on these units: one is a Suntec and the other one is a Webster pump. With that being said, Suntec bought Webster Pumps. Both pumps are obsolete. I have not been able to find EITHER pump in stock or for sale. I have attached pictures of the pumps with Model...

Thanks man this really helps me out! I am finding more and more ways to get these things running. I thought they were dead machines, and one by one I eventually get each one figured out. These forums really help with the brain damage of not knowing and not finishing

I was wondering if you ever found a new pump? I have 5 of these and I am having problems with all 5 pumps. One the pumps I was thinking of rebuilding.... has anyone done that? Are their parts available to do this? Can you change out the pressure regulator? Two of the others I am going to...