Fenwal 35-605606-223 Control Els PW 29614 or up to 50% glycol

or up to 50% glycol concentrations

While the burner tube is physically compatible with both natural gas and liquid propane

or the system throwing a specific "limit open" fault code on the control board

Nu-Calgon 4308-07 Zerol 200TD is the industry standard for alkylbenzene refrigeration oil

Industrial Durability: Constructed from heavy-duty rubber compounds to resist the oil and heat common in commercial HVACR environments

Fenwal 35-605606-223 Control Els PW 29614 or up to 50% glycolThe Fenwal 35 605606 223 Control is a microprocessor based Direct Spark Ignition (DSI) module engineered for precise timing and safety in gas fired heating systems. Designed for 24VAC 50 60Hz applications, this DSI ignition board monitors burner operation using advanced remote flame sensing technology to ensure stable performance and rapid response to flame failure. This specific model features a 30 second pre purge cycle to clear the combustion