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Supply water?

Al Letellier
Al Letellier Member Posts: 781
in THE MAIN WALL
It's a point of discussion and disagreement amougnst technicians. But here's the truth......only and only if your boiler is equipped with a working low water cutoff should you consider leaving the valve closed. The function of the pressure reducing valve is to maintain pressure in the system should a leak occur, and it will add water if one occurs. 95% of the time, that valve is open, to allow the PRV to do its job. One school of thought is that systems rarely leak, and a low water cutoff will shut down the boiler if a leak occurs, and only the water in the system will escape if a leak occurs, minimizing damage.
It's a toss up if you have a LWCO, but as for me, my valve is always on.

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Comments

  • CPyne
    CPyne Member Posts: 22
    Supply water?

    Hi,

    I recently had to drain my home's gas hot water basebard system to relocate a pipe. Once I have the system filled back up, should the valve that connects the system to the pressure reducing valve and the cold water supply be left open? The valve was open when we moved into the house and the system seemed to be working fine. The reason I ask is I read the article online that says not to do this. (unfortunatly I can't find it now) Can anyone comment on this?

    THanks
    Charlie

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