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Thread: what makes a solar heating system blow off an end cap

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    Join Date
    Apr 2012
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    what makes a solar heating system blow off an end cap

    recently moved to chandler az, Our pool has a falco solar system on roof. As i am trying to familiarize myself with the total system, the solar seems to be problematic. recently i tried to turn on the solar to see what results i would find. Immediately it blew off an end cap and water poured out off the roof. Is this because i turn on the system fully, an inspection was done in may of this year say all was in good working order. I would like to ulitize solar to extend the season, but it seems to be a weak link. Chandler AZ is the location. at least 8 panels on roof, 20000 gallon inground pool, pentair pumping system.

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    Mod Squad JohnT's Avatar
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    Re: what makes a solar heating system blow off an end cap

    Could be that full flow of the pump is too much. Watch your pressure gauge as you open the valve. Try it at about a 3psi rise and see how it goes.

    It could simply be that the fitting was loose. Most of that stuff is hose-clamped on, and with heating and cooling cycles stuff works loose.
    TFP Moderator
    20K Gallon 20X36 Vinyl Inground
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    jjslinger's Avatar
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    Re: what makes a solar heating system blow off an end cap

    I wonder if someone drained the panels for the winter by removing the cap, and then didn't reconnect it fully, assuming that would get done in the spring?

    Don
    16K gal IG 16'x28' pebble since 2011; Pentair Easytouch; Sta-Rite Intellipro VS pump; Sta-Rite 400 sq. ft. cartridge (System 3); 6 Heliocol Solar Panels; Aquamatic Cover; Legend pressure-side cleaner with Hayward booster pump; TF100 Test Kit.

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    Mod Squad jblizzle's Avatar
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    Re: what makes a solar heating system blow off an end cap

    Also make sure there is not a shutoff valve on the return plumbing that was not allowing the water to return to the pool ... thus pressurizing the system.

    Posted from my Droid with Tapatalk ... sorry if my response is short
    Jason, TFP Moderator
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    Join Date
    Apr 2012
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    chandler az
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    Re: what makes a solar heating system blow off an end cap

    thank you all, will report my progress.

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