Question about Rinnai Webstone The isolator EXP tankless water heater Service Valves WRIK

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I have a Rinnai R75LS and have it hooked up to clean with vinegar. However the R75LS will not allow the vinegar to flow through. I have watched videos etc. and seem to be unable to get the vinegar to flow through the system. What am I missing?

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I'm assuming you heater will let water flow through and it's not completely blocked with scale. There is a motorised valve that needs to be open. Start with the heater connected normally and run a hot tap. While it is firing turn off the power, this will leave the valve in it's open state.Now connect up your heater to the vinegar supply; do not turn the power back on.

Posted on Sep 16, 2010

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Posted on Jan 02, 2017

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