Honeywell Honeywell C60VR40040 max pressure switch C60VR40040

The Honeywell C60VR40040 is a maximum gas pressure switch with a setting range of 5 to 40 mbar (0.005–0.04 bar). It is designed for direct mounting on VQ400 dual valves and VRB00/VR400/V4730 combination gas valves. The switch monitors upstream gas pressure and prevents burner start or forces shutdown if pressure exceeds the preset threshold. It features an aluminum body, DIN plug electrical connection, and a 1x SPDT switching element. The ambient temperature range is -10 to 70 °C.

When selecting a replacement pressure switch of this type, verify the pressure range, connection type (flanged or threaded), and electrical contact rating. Ensure the mounting configuration matches the valve body and that the impulse line is clear. Confirm the switching element type (e.g., SPDT) and the ambient temperature limits suit the installation environment.

Typical failures include a torn diaphragm, drifted setpoint due to wear or contamination, and corrosion of the adjusting spring or microswitch. These may cause burner lockouts during start sequence or after stable operation. Check the switch by applying pressure with a hand pump and comparing the switching point with a manometer.