As a veteran-grade electronic boiler safety control

this bronze-bodied safety valve is factory-set at 50 PSI to prevent over-pressurization in high-output hydronic heating systems

the Lennox 89M77 Dual Capacitor is the reliable OEM replacement you need to get the system back online

Why does the N/C side have a lower amperage rating

it requires the high-capacity performance of the Conbraco 10-615-10

Carrier HH12AT008 Fan/Limit Switch 321142-301 As a veteran-grade electronic boilerThe Carrier HH12AT008 Fan Limit Switch is a critical safety and operational component designed for intermittent ignition and legacy standing pilot gas furnaces. Engineered to regulate blower motor engagement and provide high limit protection, this bimetal sensing element control ensures the heat exchanger does not exceed safe operating temperatures. As a combination fan limit control, it features adjustable cut in and cut out settings, allowing