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The 21642 is the primary HSG 400 replacement part and is also utilized in Blue Angel and Blue Angel Plus gas conversion burners
this switch features standard spade terminals for rapid electrical integration within the furnace control circuit
Can this be used for oil pressure sensing
this RK-FHB-V relief valve kit is likely the correct service part
facilitating easy wiring of both primary and secondary leads through separate conduits if required by local codes
Resideo 394800-30 Ignition Cable Assembly The 21642 is the primaryThe Resideo 394800 30 is a heavy duty ignition cable assembly engineered specifically for intermittent pilot systems. Measuring 30 inches in length, this high voltage lead provides the necessary reach for complex furnace cabinets while maintaining signal integrity. It features a right angle boot designed for a secure, low profile pilot burner connection, which is critical for preventing arcing and ensuring consistent spark delivery in tight spaces. On