The Armstrong International A8581 Humidistat (also known as the A-8581) is a high-performance on-off high limit duct humidistat designed for precise safety and control in industrial and commercial HVACR applications

The Carrier 338085-758 Limit Switch is a critical safety component designed for precise temperature regulation within high-efficiency furnace systems

this kit resolves common furnace ignition failures and ensures the gas valve receives a consistent millivolt signal during the trial-for-ignition phase

and fault detection

Operating on a 24VAC 50/60Hz electrical signal

ASCO V710EBSV22 Valve Body R-407C The Armstrong International A8581 HumidistatThe ASCO V710EBSV22 Valve Body is a high performance, 2 way normally closed component specifically engineered for the precise on off control of commercial and industrial gas burners. This 3 4 inch die cast aluminum valve body features a quick opening trim and is designed exclusively for seamless integration with AH Hydramotor actuators. With a flow factor of 14 Cv and a capacity of 754 cfh, it effectively manages fuel gas at operating pressures from 0