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munchkin 399---is there an option for csd-1 controls ?


  • tim smith1
    tim smith1 Member Posts: 26

    Is the 399 out, I would be velly interested.
  • Mark Eatherton1
    Mark Eatherton1 Member Posts: 2,542

    CSD1 is required on boilers with an input over 400,000 BTUh. Not sure if it's an option. Don't think it's necessary. Not sure the 399 is in full production yet.

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