Which direction should my heatsink face?

[HAZe_18]

Hello. I have recently upgraded to a cm 932 and im not sure which way i should point the cpu fan. i have a zalman 9700, and i was wondering if i should face it to the top or to the back. Any help is greatly appreciated

 

[simon12]

It you have an exhaust fan above it then either otherwise blowing out the back

 

[christop]

Toward the back of your case.