Fenwal 35-665576-111 Ignition Module 321702-401 The assembly is designed to

The assembly is designed to facilitate the consistent updraft of combustion gases

By keeping the sump warm

Built for high-heat environments

Safety-First Design: Redundant solenoid coils provide an extra layer of protection by ensuring positive shut-off if power is lost

Can the Resideo ZD20X24TZ be installed in any orientation

Fenwal 35-665576-111 Ignition Module 321702-401 The assembly is designed toThe Fenwal 35 665576 111 is a microprocessor based 120V HSI Control engineered for high reliability performance in residential furnaces, hydronic boilers, and commercial water heaters. This hot surface ignition module features a 20 second heat up time and a 4 second trial for ignition (TFI) period, ensuring precise sequencing for gas fired heating equipment. As an OEM grade replacement, it provides robust flame sensing using Detect A Flame technology,