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Need recommendation for manual reset high limit setting on Ultra boiler
A friend just had a new Weil McLain Ultra boiler installed that serves both radiant slab on grade and suspended tube below wood (no transfer plates) floor type zones. He also had an indirect installed for his domestic hot water. His contractor missed the need per the installation manual for a field installed high limit control installed on the radiant manifold which would protect the radiant zones from overheating, especially the wooden floors. Question, what setting would you set it? The manual didn't suggest one. FYI, the installer has decided to use the slab on grade setting on the Ultra so the maximum supply water going to the zones will be 120 F. Also, the installation manual allows either an automatic resetting or a manual resetting control, which is better? I think either control would need "resetting" at the Ultra's control panel so maybe there isn't a better choice but for sure there needs to be one. I could use some field experience with this one, thanks in advance. Joe
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