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Heatmaker - Operating Control Options


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Posted by John on November 10, 2007 at 20:56:07:

I have a 1992 Heatmaker HW-M2 that has had a boiling problem most of itís life. Iíve tried the vinegar fix with some success but now that doesnít seem to touch it. Iíve resorted to increasing the water pressure to reduce the boiling but Iíve reached the limits of the relief valve and still experience boiling. Iím wondering about changing to standard Operating Control (contacts open at 210 deg. and close at 170 deg) to one with a lower temp range (maybe 200/160 deg.). Would anyone know of a source for such an item and has anyone done anything like this? Thanks -


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