As for the cooler installation procedure using their brand name SecuFirm 2 retention kit, we have already discussed it in detail in our Noctua NH-D14 Review. Besides, its step-by-step description is provided in a very convenient instruction manual. The only thing we should point out is the available cooler positions on the PCB:
According to the schematics above, the heatsink cannot be installed when the heatpipe ends are facing down, while the remaining three positions are just fine.
You will have to remove the cooling fans, in order to install the cooler onto your CPU. Otherwise, you won’t be able to reach the retention screws with the screwdriver:
Noctua NH-C14 looks like this when it installed inside a system case (with one and with two fans):
I would like to add that when the bottom fan is in place, it leaves a 42 mm gap between the fan and the mainboard PCB. When this fan is removed, you get another 25 mm of free space there.
Technical Specifications and Recommended Pricing