Common Questions Why is my Reznor unit heater tripping the high limit switch

this York OEM replacement part ensures precise timing and reliable operation under demanding thermal conditions

providing reliable performance for air proving in electric duct heaters and variable air volume (VAV) systems

it provides critical overheat protection by opening the circuit at a fixed open temperature of 200°F

making it a plug-and-play replacement for service calls

Conbraco 10-614-12 Valve 30067439-890 Common Questions Why is myThe Conbraco 10 614 12 (also known as the Apollo 10 614 12) is a high capacity ASME Section IV safety relief valve designed specifically for the protection of hot water heating boilers and large scale hydraulic systems. Featuring a 3 4" FNPT inlet and an oversized 1" FNPT outlet, this valve is factory set at 60 PSI to manage high volume discharge requirements. It delivers a substantial 1,641,000 BTU hr capacity, making it a critical component for