Venting Furnace Intake Outdoors

[JSA]

Hi All,

I am in the process of making plans to finish my basement and would like to have the air intake on my high efficiency furnace brought out doors (it is currently inside right beside the furnace). I have been told that according to new code that I will need to use Type BH ClassII PVC pipe which they are currently selling at Lowes. They do not however sell any couplers or elbows in this type of PVC. Can I use standard PVC parts to couple the pieces together? I have a Lennox G43UF furnace, and according to the installation manual this can be done as long as the pipe is in the same pressure system as the exhaust and within 6". Any guidance would be greatly appreciated.