the fan may be rated for outdoors but when it gets to be freezing out and that pipe fills up with snow /ice and water and freezes solid it aint gona work for nothing...unless the constant flow of warmer air keeps it open, I did a quick google and all the systems dont recommend a rain cap....No. I was wondering the same but thus is how I was told to do it and the fan is rated for outdoors use so I take it that it might have an internal design directing the water safely past the motor. The man who signs my paychecks told me to do it that way so that is how it went in. If I felt it was safety issue or something really totally hacked then I would object. Just because I would personally prefer a different approach does not mean I have good grounds to stand on for objecting. The luxury of having the final say is reserved for the boss not the employee. The end of this year or beginning of next I will have that luxury myself.
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