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Note:
1. A call for heat from any zone activates Boiler Circulators, System Circulator and Zone Circulator.
2. Each Boiler Circulator is also controlled by a low limit to prevent operation when the Boiler is cold.
3. Dump zone operation will activate one or more zones, System Circulator and Boiler Circulator.
4. Do not bypass temperature supply control system on radiant heat system. In radiant heat applications,
permit activation of a call for heat but allow system controls to regulate water temperature.
Not all system components, valves and devices are shown in this drawing. Actual conditions and application
requirements will vary. Please consult a heating expert or your Legacy Stoves dealer for additional
information.
Boiler Piping Diagram – Primary/Secondary System Option 1
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