Question about Rinnai Webstone The isolator EXP tankless water heater Service Valves WRIK
Hello, I have a brand new rannai 94 ls. all works fine,except when i shut off facuets.sometimes when I shut off water a small amt of water is realeased from the safetey blow off, it almost sounds like a water hammer. Do I need a exp tank ? or some air cushions?
This may be the case. If you have a check valve installed on the heater to prevent the hot water from backing up into the inlet or cold water side this may happen. A hot water expansion tank at the heater or water hammer devices near the fixture itself should cure the problem.
One question, how high is you water pressure?
Posted on Dec 01, 2008
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Posted on Jan 02, 2017
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