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For techs servicing M1 series units
always verify that the appliance's ignition sequence does not specifically require a slow-opening characteristic for delayed main burner ignition
it ensures high repeat accuracy that remains unaffected by cross-ambient conditions or barometric pressure shifts
Does this unit have a pressure tap for checking manifold pressure
York S1-FRNR70 Fuse 320819-301 For techs servicing M1 seriesThe York S1 FRNR70 Fuse is a critical industrial grade protection component engineered for high demand HVACR systems. This 70A Fusetron Buss Fuse features a dual element time delay design, which is essential for handling the high inrush currents often encountered in commercial motor starts and compressor cycling without nuisance tripping. Rated for 250V AC, this Class RK5 fuse provides a high interrupt rating of up to 200kA, ensuring robust short
