Fenwal 35-655921-001 Ignition Module 320734-701 This Detect-A-Fire unit features a

This Detect-A-Fire unit features a 450°F (232°C) fixed-temperature threshold with a Close on Rise contact action

the HFO-0006 pneumatic filter extends the service life of pneumatic actuators and prevents system-wide performance degradation

Key Benefits Long Radius Geometry: Minimizes friction loss and optimizes flow velocity in large-diameter HVACR lines

Designed for the rigors of commercial cooking and industrial heating

The unit includes 18-inch wire leads for flexible field wiring and a manual override lever to aid in system commissioning and manual positioning

Fenwal 35-655921-001 Ignition Module 320734-701 This Detect-A-Fire unit features aThe Fenwal 35 655921 001 is a microprocessor based 24 VAC Hot Surface Ignition (HSI) Control engineered for precise management of gas fired appliances. This direct replacement ignition module handles the complete demand sequence, including combustion blower control, flame sensing, and diagnostic monitoring. Designed for systems under 400K BTU, it features a 5 second Trial for Ignition (TFI) and a 5 second ignitor heat up period to ensure stable