It is standard practice for veteran techs to inspect the bracket for corrosion or heat-induced deformation

making it compatible with standard HVAC 40VA transformers and integrated ignition control boards

this model features an adjustable switch point

Code Compliance: Built to meet rigorous ASME requirements for safety valves in hot water heating applications

Greenheck 853643 Spark Igniter/Flame Sensor Kit 320788-704 It is standard practice forThe Greenheck 853643 Spark Igniter Flame Sensor Kit is a critical OEM component for ensuring reliable ignition and consistent flame rectification across various indirect fired gas heaters and makeup air units. This dual purpose assembly streamlines maintenance by combining the high voltage spark electrode and the flame monitoring rod into a single robust unit. Designed to withstand the thermal stresses of continuous operation, the 853643 igniter kit