These are pre programmed thermostats that replace any digital existing thermostat on an existing AFC control panel.
Please note your existing thermostat so we can give you the correct instructions to rewire this thermostat into your control panel.
There are two options based on the burner your booth uses.
Low High Low and Full Modulation.
If you don't know what type of burner you have, please give our tech support a call.
Wiring Diagrams: