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Rinnai Digital Remote Controller for tankless water heater NEW - $159 (Irving Texas)
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This is a brand new controller. Still in original box.
This has scald protection so hot water is limited to 140 degrees.
Can be picked up today.
7 66156 00151 2
The MC 91 1US 5 could be substituted with MC 45 4US This thermostat controller is solid silver color
The only difference is that the the MC 45 4US has a limiter that restricts the water temperature to less than 140 degrees. The MC 91 1US 5 does not limit the water temperature to less140 degrees. You would have to decide if you want to limit water temperature if you replace MC 91 1US 5 with MC 45 4US
rinaii