Fenwal 35-665575-111 Control Refrigerant Can this sequencer replace a

Can this sequencer replace a single-circuit model

While often used in straight horizontal runs

This genuine Weil McLain part is engineered to withstand the rigorous thermal cycling and positive pressures typical of the Ultra gas boiler heat exchanger

simplified housing for faster installation and fewer leak points

Fenwal 35-665575-111 Control Refrigerant Can this sequencer replace aThe Fenwal 35 665575 111 is a microprocessor based Hot Surface Ignition (HSI) Control Module designed for reliable burner sequencing and flame monitoring in 120V heating applications. This direct ignition control features a 20 second heat up timing for the ignitor, ensuring consistent light off even in demanding atmospheric conditions. Engineered for professional grade HVACR systems, it manages the combustion process with high precision timing,