Hand-tighten the connection to avoid stripping the brass threads

which typically meets code requirements for vent limiting without additional external piping

reducing mechanical stress on the blower motor

Secure Porting: Standard 1/4" NPT threading facilitates leak-free installation with common hardware

For technicians servicing commercial HVACR units

York S1-6187677 Ignition Board Refrigerant Hand-tighten the connection to avoidThe York S1 6187677 Ignition Board is a high performance, 2 stage 24V spark ignition control designed for precise combustion management in residential and light commercial gas furnaces. As a genuine OEM replacement part, it is the direct successor to the S1 025 35304 000, ensuring seamless integration with original wiring harnesses and mounting footprints. This module is engineered to handle multi stage heating sequences, managing intermittent pilot