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The Fasco D383 Motor is a high-performance
Standard technician tools are usually sufficient
Technicians should use a DC microammeter connected to the FC+ and FC- flame current test pins
Standard wiring includes White (Common)
the snap-off volute and integrated mesh debris screen allow for quick clearing of scale and sediment
Lennox 69W27 Orifice 318518-761 The Fasco D383 Motor isThe Lennox 69W27 is a precision engineered 1 16" natural gas orifice designed specifically for compatible Lennox gas fired heating units. This gas burner orifice serves as the critical metering component within the manifold assembly, ensuring the correct BTU input and stoichiometric fuel to air ratio for safe combustion. Machined from heavy duty brass to resist corrosion and thermal degradation, the 69W27 burner nozzle maintains a consistent 0. 0625
