Rinnai Tankless REU-V2520-EFU. Water isn't as warm as it used to be.

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JimsinOregon

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Rinnai Tankless REU-V2520-EFU. (4-6 years old) Water isn't as warm as it used to be. Any ideas what might be causing this? Any suggestions on how to remedy it?

I did notice that the installer used a bathroom controller to control the unit, which limits the temperature to 120 degrees (instead of a master controller that allows temps up to 140 degrees.

Thanks in advance,

Jim
 
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