Durable Construction: Built with a thermoplastic housing and a robust gear train featuring stainless steel bearings

When spec'ing a replacement

Secondary Voltage: 24 VAC

This acidic moisture settles in the flue collector box

Fenwal 35-665904-225 Ignition Control 323613-751 Durable Construction: Built with aThe Fenwal 35 665904 225 Auto Ignition Control is a microprocessor based 24 VAC Hot Surface Ignition (HSI) module engineered for precise burner sequence management in gas fired appliances. This multi try ignition control features a 30 second pre purge and a 10 second trial for ignition (TFI), ensuring optimal combustion conditions before gas valve actuation. Built for versatile field applications, it supports 120 240 VAC field selectable line voltage