AERCO 58015-02 Maintenance Kit 340155-7024 normally closed (NC) switch is

normally closed (NC) switch is factory-calibrated to open at 170°F

Always cross-reference your specific model and serial number with the factory parts list

boasting a Cv value of 2

Excessive ohm resistance due to age is common

and rotation direction required for your linkage or damper shaft

AERCO 58015-02 Maintenance Kit 340155-7024 normally closed (NC) switch isThe AERCO 58015 02 Maintenance Kit is a specialized 24 month service solution engineered specifically for Benchmark 2. 0 (Nozzle Mix) boilers. This professional grade BMK 2. 0 Maintenance Kit is essential for performing comprehensive waterside and fireside inspections, ensuring your high efficiency heating system maintains peak operational integrity. Each kit includes critical OEM replacement parts such as the spark igniter, flame detector, and