Camus Hydronics DFH/W2000 - Sequence of Operation

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Sequence of Operation
Flow Switch = Flow Switch, Low Water Cutoff (if equipped)
Gas Pressure Switch = Low gas pressure switch (4.5” w.c., N/O), High gas pressure swtich (14” w.c., N/C)
Air Pressure Switch = Blocked flue switch (N/C), Air Proving Switch (N/O)