Thermal Solutions APEX APX425C - 8 Electrical (continued); DHW Priority Wiring Diagram (Heating with Central Circulators)

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APEX Installation, Operating, & Service Instructions APEX Installation, Operating, & Service Instructions
Figure 8-7: Modified Wiring For DHW Priority When Using Low Flow Circulator Piped Off System Header -
Heating (with Central Heating Circulators) Plus Alternately Piped Indirect Water Heater
8 Electrical (continued)