Side vented furnace blocked by snow
We have a Lennox Pulse Direct Vent Central Furnace Model G1404/5-100-7. It works well but the 2 inch PVC pipe is placed so low on the side of the house that drifting snow blocks the intake pipe and chokes the furnace. We awoke to a 50 degree house a couple of weeks ago and had to shovel out the intake to get air to the furnace.
The furnace is about 15 feet from the exit wall. The intake pipe rises about 18 inches from the manifold, takes off at 45 degrees for another 16 inches or so, turns another 45 degrees until the pipe encounters a wall about 4 feet out, then turns at 90 degrees and runs about 12 feet until it exits the exterior wall after a couple of 45 degree turns to allow it to rise above the sill plate. After exiting through the wall, it only clears the ground by about 15 inches.
Question: Based on what I described, is it possible to add another two turns to the exhaust pipe to elevate it another foot or two above its current height? Thanks.