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For a multi-system application, is one heater firing all the time?

No, the primary firing heater rotates every 24 hours or 8 hours of combustion time. This ensures even usage of the heaters.

Refer to system controller installation manual for more details, located at http://support.noritz.com/technical-literature.php

system controller
A device used to link two or more heaters together so they operate as one system (up to 24 units.)

Applicable Models

  • Models: All commercial units and units compatible with a system controller.
Updated on April 17, 2021

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