Question about Rinnai Digital Remote Water Heater Control Mcc-45-4us

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I have a Rinnai Model 2532 with an MC-45-4US and BC-45-4US control units. I finished another bathroom and want to add a controller, but have been told that a compatible BSC-45-4US is no longer made. Is there a newer controller model that will work with the older control units? Rinnai customer supoport was no help at all!@! Thanks, Ken

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Sorry Ken I worked for Rinnai Australia as a service manager so treat my advice with a little cuation but you should find the basic universal controller should work fine. The code over here is a MC-91 Q2A. It will MC-91 sometihing for over there (I'm guessing from the codes you use you are across the pacific!). You can wire this unit either back to the heater or to wiring from another controller, just match the colours and link them in. Power off the heater first but it is all low voltage.

Posted on Jun 06, 2011

  • Beaubeau01 Jul 20, 2011

    Ken-- I have two of them brand new in the box--we built our house and ended up with four of them by mistake. Are you still interested?

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