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

Using genuine York HVAC parts ensures exact dimensional tolerances

Parallel Blade Precision: Optimized for high-volume airflow control with minimal turbulence

and V5197 Series gas valves

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,