Key Benefits for Technicians: Direct OEM Match: Replaces old part numbers 78H19

This classical series V-belt is rated for an operating temperature range of -32°F to +140°F

Like all hot surface ignitors

28 cc displacement

Velocity Boiler Works (Crown) 3505065 Control Board 320074-702 Key Benefits for Technicians: DirectThe Velocity Boiler Works (Crown) 3505065 Ignition Control Board is a critical OEM component designed to manage the full ignition sequence for gas fired hydronic systems. This high reliability ignition control module operates on a 24 VAC power supply and features a broad operating temperature range of 40F to 175F, ensuring stable performance in demanding mechanical room environments. Built with integrated safety mechanisms, the 3505065 control board