A veteran technician should inspect this gasket whenever the chamber face plate is pulled

The Schneider Electric Erie VS2222 is a high-performance 1/2 inch NPT zone valve body designed for demanding hydronic and steam applications

preventing erratic system behavior or contact welding under standard inductive loads

utilizing the genuine Resideo 392449-4 ensures compatibility with brass pilot gas lines and prevents the common mechanical failures associated with generic sub-components

System Protection: Prevents condenser fan motor failure and compressor slugging by managing ice accumulation during heating mode

Lochinvar & A.O. Smith 100233301 Switch R-407C A veteran technician should inspectThe Lochinvar & A. O. Smith 100233301 Switch is a critical fixed setting Normally Open (N. O.) air pressure switch designed for negative pressure sensing applications in high efficiency venting systems. Calibrated specifically to 1. 25" WC, this OEM component serves as a primary safety proving switch, ensuring the combustion blower is generating sufficient draft before the ignition sequence initiates. For veteran technicians, this 100233301 pressure