Honeywell Gas pressure switch C6097A4210B

The Honeywell C6097A4210B is a mechanical pressure switch designed for minimum gas pressure monitoring in burner and boiler control systems. It operates within a pressure range of 2.5–50 mbar and has a switching differential of 0.8–1.5 mbar. The switch features an SPDT microswitch with a contact rating of 0.05–5 A at 24–250 V AC, and is suitable for air or non-combustible gases. Its housing is made of AlSi 12 aluminum alloy, and it has an IP65 protection class. The maximum working pressure is 500 mbar, and the ambient temperature range is -20 to 80 °C. This product is manufactured in Germany and has article numbers C6097A4210B, 84449022, and 534.676.031.

When selecting a replacement pressure switch of this type, ensure the pressure range, switching differential, and electrical ratings match the original specifications. The connection thread or spigot size must be compatible with the existing impulse line, and the switch must be suitable for the medium (air or non-combustible gases). Mounting orientation and cable entry type should also be considered. Always verify the setpoint adjustment range and that the switch is rated for the system's maximum working pressure.

Common failure modes for this type of pressure switch include a torn diaphragm, blocked impulse tube, or drift in the mechanical setpoint. These issues can cause the burner to lockout, often appearing as an ignition fault but actually being a pressure-proving failure. Symptoms may include the burner failing to start or shutting down unexpectedly. Check the diaphragm integrity, impulse tube cleanliness, and setpoint calibration when troubleshooting.