the Bard HVAC 8406-100BX Pressure Switch is your go-to for maintaining system integrity

serving as a direct replacement for existing Erie zone valve applications in fan coils

fitting standard fan control centers including the 90-112 and 90-118E series

While universal relays exist

it features a factory-installed limit switch to prevent thermal overload and ensure safe operation within standard airflow parameters

Fenwal 35-655705-001 Control 30067439-890 the Bard HVAC 8406-100BX PressureThe Fenwal 35 655705 001 Control is a rugged, microprocessor based 24VAC Hot Surface Ignition (HSI) module engineered to manage specialized gas fired combustion sequences in high demand HVACR systems. This unit is specifically configured with 0 second prepurge (0pp) and 0 second inter purge (0IP) timings, delivering an immediate trial for ignition upon a call for heat. As a 3 try ignition control, it provides three distinct attempts to establish a