Lochinvar & A.O. Smith 100093809 Natural Gas Door Switch 40S40/50T50

The Lochinvar & A.O. Smith 100093809 is a Natural Gas Door Switch which is an added safety measure meant for 40S40 and 50T50 Natural Gas Water Heaters. It means that the water heater works only when the access door is shut and there is no gas supply if the door is open. This switch assists in preventing the leakage of the dangerous gases and guaranteeing the right burning. Applicable to residential water heaters, it increases safety and system performance. Advantages are the increased protection and safety of the water heater, protection against malfunction, and maintenance of the right conditions for the water heater to last longer.