Which way should MY PSU be facing, in accordance to fan instakes/exhausts

[Devronicthetonicman]

So here is my set up

Case - Thermaltake Amror Revo Gene Black
http://www.newegg.com/Product/Product.aspx?Item=N82E16811133210

Motherboard - ASUS Z87-A http://www.newegg.com/Product/Product.aspx?Item=N82E168...

CPU - i5-4670k http://www.newegg.com/Product/Product.aspx?Item=N82E168...

CPU cooler - H100i http://www.newegg.com/Product/Product.aspx?Item=N82E168...

RAM - Corsair Vengeance Pro 2x4gb 1866mhzhttp://www.newegg.com/Product/Product.aspx?Item=N82E168...

GPU - MSI Geforce GTX 770 2gb oc/tf http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Power Supply - Corsair RM850W http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Front 200mm fan - Intake
Side 200mm fan - Intake
Top H100i 120mm x2 fans - exhaust
rear 120mm fan - exhaust

my question is...which way should my RM850 PSU fan should be facing? As of right now I have it facing down, so the fan is facing down. I just want the best negative or positive fan pressure my case should be getting. I'm sorry if I sound like a noob, I kind of am when it comes to this stuff. Thanks for any suggestions you guys have. You're all the best at it!

 

[Suztera]

If you have a carpet under the case, face it upwards or lift the case up higher.
Either way is fine as long it has air to take in through the fan.
Some prefer positive while some like negative. Either is fine.
With what you said above you were get negative pressure

 

[AlderonnX]

Keep the fan facing down. With a 850 Corsair the fan is running pretty slowly anyway with your build as the max you will be pulling is in 300-400 watts range.

 

[algaceburator]

Fan need to face down. Fan suck air. If it will face inside the fan it will suck hot air. Is not a big problem but for best performance fan need to face outside of your case.

 

[Devronicthetonicman]

Excellent, I'm already doing that. Thanks guys!!!