Lennox 21W14 Control Board 321894-709 Versatile Replacement: Functions as a

Versatile Replacement: Functions as a replacement for the 67-X series when paired with the appropriate 1/2" piping adapter

40" and 12

Can the AE40010 be used in outdoor applications

this sensor is a standard component in Lochinvar Knight

Lennox 21W14 Control Board 321894-709 Versatile Replacement: Functions as aThe Lennox 21W14 Control Board (OEM 101029 01) is an essential Direct Spark Ignition (DSI) Integrated Control Board designed for high performance gas furnaces. This replacement ignition control board operates on a 24VAC circuit at 50 60 Hz, managing critical combustion cycles including flame sensing, gas valve regulation, and combustion blower motor timing. Engineered for precise microprocessor control, the 21W14 eliminates the need for standing pilot