Welcome to the forum
Congrats on your purchase. Depends on what brand/model of furnace you have. In most RV’s all you have to do is make sure the propane is on and turn up the thermostat. It should have electronic ignition, and will light the propane a few seconds after the fan starts spinning.
There are still some old furnaces (no ducts or vents) that require you to remove the front grill and light a pilot light but I doubt that’s the case here. If you can post a pic of the thermostat it would help.
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2012 Copper Canyon 273FWRET being towed by a 1994 Ford F350 CC,LB,Dually diesel.
Airlift 5000 bags, Prodigy brake control, 5 gauges on the pillar.Used to tow a '97 Jayco 323RKS.
Now an RVIA registered tech. Retired from Law enforcement in 2008 after 25+ yrs.