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Hydronic manifold problems
I just got my boiler up and running this past week. I have an air handler to take car of the main house and I have Pel-Al-Pex installed in the garage. I have 5 zones in the concrete and one zone is for a hanging heater in my shop.
When I went to start up the heat for the garage I noticed I had what seemed like very little if any flow on my meters. I closed off the main isolation valves for the manifold and hooked up a garden hose to try and flush the lines. The first line I got maybe 1-2 gallons of dirty water and then it stopped flowing. I moved on to do the other 5 lines and got no water at all.
I contacted Pex Universe where I purchased this manifold back in 2011 and she pulled up my order and told me it is a Rifeng SSM106 and they no longer make replacement flow meters for that model. I am guessing I need to install a new up to date manifold. The site glasses are glued in so I can't remove them to see it the plunger is stuck and I am hesitant on unscrewing them and the metal fitting.
The pex lines have never been flushed in 12 years so can I assume I need to try and push fresh water through these lines until they run clear?
Any and all advice is greatly appreciated,
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