It is typically used as a termination point for internal tubes or as a hardware enclosure cap within the furnace cabinet to protect the system from environmental debris

making it a critical stock item for service vans

Rugged Durability: Housed in a die-cast NEMA 2 enclosure to protect internal components from typical mechanical room conditions

the 100109446 is the official successor and updated version for the 9003739105

OEM-Spec Leads: Factory-installed 15

Fenwal 35-615221-001 Ignition Module 318172-701 It is typically used asThe Fenwal 35 615221 001 Ignition Module is a robust 24V Direct Spark Ignition (DSI) control engineered for precision in commercial and residential heating applications. Designed for single electrode or dual electrode sensing, this DSI gas ignition control manages the gas valve and main burner spark ignition while providing continuous flame rectification monitoring. Technically, the module is configured with a 30 second pre purge to clear the