Description
The Lennox 69W36 is an automatic reset limit switch, a safety device that is installed in different HVAC products such as furnaces and air conditioners. It works like a temperature sensor and switch at the same time. The switch opens or closes an electrical circuit when the temperature gets to a set point between -30°F and 150°F. Hence it leads to such operations as switching off a furnace before it gets too hot that it might cause damage or an air conditioner before it develops frost on its coil. In controlling temperature, the limit switch protects your HVAC system from further harm and guarantees that it is operating efficiently.
