This kit is designed to facilitate the proper venting of combustion gases by creating a controlled pressurized environment within the heat exchanger

or visible signs of corrosion or melting at the connector pins

Ensure the system is properly bled and the pump orientation matches the manufacturer's specification to maintain the mechanical seal integrity

Since it is a normally closed switch

Can the 099022 be used on high-pressure applications

Advanced Distributor Products 76717100 Limit Switch 320788-703 This kit is designed toThe Advanced Distributor Products 76717100 L160 30F Limit Switch is a critical OEM replacement part engineered for high precision thermal protection in residential and commercial heating systems. This L160 30F high limit switch is designed to open at 160F and close once the temperature drops by a 30F differential, preventing heat exchanger damage and ensuring furnace safety sensor reliability. As a genuine ADP HVAC component, the 76717100 offers