Kromschroder Pressure switch sensor DL5E-1Z 32Z 47-90-29266

The Kromschroder DL5E-1Z 32Z is a pressure switch designed for monitoring air or gas pressure in burners, boilers, and similar heating equipment. It provides control and activation when pressure deviates from set values, enhancing system safety. This model is identified by SKU 47-90-29266 and is manufactured by Kromschroder. It is suitable for use in safety circuits to confirm pressure within a set band before ignition sequence proceeds.

When selecting a replacement pressure switch of this type, ensure the medium (air or gas), switching range, differential, connection type (thread or hose spigot), electrical contact rating, and approval class match the original specification. Measure the existing switch's settings and compare them to the new part's specifications before ordering. Installation involves checking the impulse line for blockage and correctly setting the switch to prevent burner lockout or nuisance trips.

Typical failures include a torn diaphragm, blocked impulse tube, or drifted setpoint. These can cause the burner to lock out, which may be mistaken for an ignition problem. Check the impulse line for blockage and verify the switch's setpoint and differential against the original specification during troubleshooting.