Using an incorrect plug will result in communication failure or improper system operation

it is used to ensure the circuit closes only when sufficient system pressure is present

1495 diameter is designed for high-output burner stages in standard atmospheric or induced draft furnaces

it facilitates rapid swaps for field technicians

Industrial Grade Reliability: Built with a durable thermoplastic housing and high-quality precise electrical contacts for long-term cycling in demanding environments

Fenwal 35-605903-223 Control 321042-401 Using an incorrect plug willThe Fenwal 35 605903 223 is a high performance 24VAC Direct Spark Ignition (DSI) control specifically engineered for Lennox HVAC systems. As a veterans' choice for field replacements, this microprocessor based module manages the ignition sequence, flame monitoring, and safety shut off for natural, LP, and manufactured gas applications. It features a precise 30 second pre purge and a 30 second inter purge to clear the combustion chamber, followed by a