Honeywell 50023821 - 001 NEMA4 cover for s7800

The Honeywell 50023821-001 is a NEMA4 cover for the S7800 burner control. Such covers are housing parts that protect the control electronics and wiring from moisture, dust, and physical damage. The NEMA4 designation indicates a weatherproof enclosure suitable for outdoor or wet environments. This particular cover is specific to the Honeywell S7800 series flame safeguard control; it is not a generic component. Parts of this type are selected exclusively by the control model and the position in the assembly. No technical rating applies – the cover simply must match the control chassis and seal correctly. When replacing a cover of this kind, verify that the screw holes, gasket seating area, and cable entry points correspond to the existing S7800 base. A mismatch can compromise the enclosure’s protection rating and lead to control failure. The reference note on housing parts reminds that such components are appliance-specific and not interchangeable across different burner controls. For the S7800, the cover is a direct replacement part. Always confirm that the manufacturer code matches the unit being serviced; in this case the codes are 50023821-001/U and 534.451.002.