Durability: Built to handle the high-cycle demands of modern hydronic heating systems without degrading performance

technicians can eliminate bypass issues and maintain tight shut-off without replacing the entire valve body

it is engineered to meet the pressure ratings required for high-performance HVACR systems currently in use by contractors

As the direct replacement for Fenwal 27121-0-325

Fenwal 35-630500-007 Module 321702-401 Durability: Built to handle theThe Fenwal 35 630500 007 Ignition Module is a high performance 24 VAC intermittent pilot ignition control engineered for precision in gas fired furnaces, boilers, and unit heaters. This microprocessor based module replaces legacy analog systems, utilizing DETECT A FLAME technology for reliable flame rectification and safe start up. Operating with a 90 second Trial for Ignition (TFI) and 0 second pre purge, it ensures immediate response upon a call for