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+--- Thread: solar water heater question (/showthread.php?tid=18243)
solar water heater question - Royall - 04-05-2017
Have a client that is out of town. Neighbor noted steam rising from the solar panel on a hot day. Is there a vent on the panels? Or, could it just have been rainwater evaporating out of the nooks and crevices in the panels?
RE: solar water heater question - Obie - 04-05-2017
There is a pressure relief valve on the panels.It could be malfunctioning.
RE: solar water heater question - geochem - 04-05-2017
If the circulation pump fails, you can overpressure the water heater panels on a sunny day - if the pressure relief valve is working properly, it will prevent the panels from breaching due to the pressure. I have a couple of derelict panels where the relief valve failed and destroyed the panels.
RE: solar water heater question - Royall - 04-05-2017
Thanks for the information... Is the pressure relief a resetting valve like the one on the water tank?
RE: solar water heater question - geochem - 04-05-2017
quote:
Originally posted by Royall
Thanks for the information... Is the pressure relief a resetting valve like the one on the water tank?
It should be - but, like on water tanks, once it starts to release, it could continue leaking indefinitely. Best to watch it and see if it re-seals properly.