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Hi .I was on a job today and in the boiler room there was a new Navien combi boiler.It was piped like an atmospheric boiler,three pumps on feed and purge tee's on return.There was no primary/secondary loop.Homeowner said he did not have any problems with boiler.What is going to happen to this system or is it going to continue to run without any problems.Thanks for your time.
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