Remove intake/exhaust ports from exterior and disconnect propane and electrical connections
Pull the panel off end of furnace ....then remove the 2 screws in bottom edge and PULL the furnace back to remove
RV MFG didn't do you any favors as it will be tight/awkward ---good luck
Here are your photos
Is it time for your medication or mine?
2007 DODGE 3500 QC SRW 5.9L CTD In-Bed 'quiet gen'
2007 HitchHiker II 32.5 UKTG 2000W Xantex Inverter
US NAVY------USS Decatur DDG31