SPNO Configuration: Single Pole Normally Open design ensures the circuit only completes when the required -

As a Manual Reset Limit Switch (M/R)

round flame profile via its fixed flame spreader

How do I know if the motor or the valve body is failing

technicians can eliminate internal leakage and prevent pressure drop across the valve body

Carrier 327872-702 Drain Kit 323055-751 SPNO Configuration: Single Pole NormallyThe Carrier 327872 702 Condensate Drain Kit is a critical OEM component designed for high efficiency moisture management in residential and commercial HVAC condensate drainage systems. This genuine Carrier replacement part is engineered to interface seamlessly with specific two stage gas furnaces and air conditioning units, including Carrier 26RTB and 30RTB furnaces and Payne two stage models. Constructed from durable polyethylene, the kit includes a