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Atmospheric Conversion
Atmospheric Conversion: Item # 1-00-232200, provides automatic fill, and converts the heating system plumbing from
pressurized to a zero pressure system. Allows for installation into more places where codes and standards restrict pressurized
systems. Note that when using the atmospheric conversion, air bleeders and check valves may actually allow air into the
lines. Another reason it is important to have a licensed Plumber involved in each phase of your installation.
When using the atmospheric conversion, the circuit board dipswitch #6 must be in the “ON” position. This will lower
the overheat temperature parameters to prevent boiling of the water. Since altitude affects the boiling point, it is also
recommended to set #6 to “ON” at elevations above 3000 ft.
Summary of Contents for PB 105
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