This direct spark ignition assembly creates the initial arc and then remains in the flame path to provide the microamp signal back to the integrated furnace control board (IFC)

offering superior dielectric strength compared to lower-rated alternatives

the 661057R is specifically sized (#57) for Liquid Propane (LP) applications

Application Versatility: Suitable for use across the entire Newco hot water dispenser lineup

the "U" designation typically refers to retail or universal packaging

Nordyne 626422R Limit Switch This direct spark ignition assemblyThe Nordyne 626422R Limit Switch is a critical safety component designed for furnace rollout protection in gas fired and oil fired HVAC systems. This thermal limit switch is engineered to open the circuit at a 155F cut out temperature, immediately interrupting the gas valve circuit if flame rollout or excessive heat is detected near the burner box. As a manual reset rollout switch, it requires a technician to physically inspect the heat exchanger and