I am trying to put a furnace in my garage but only the fan runs I don't want a thermostat as I will shut off when temp is comfy, but furnace has a thermostat at the top of the furnace but can't figure how to wire it
The furnace will not operate until you make the circuit through the switch/T-Stat on top. Theres a reason for the T-Stat. Safety. And thats why it will not run until you find out how to wire a furnace.