http://www.reddit.com/r/dayz/comments/2siz3w/53_115_unofficial_experimental_changelog/cnr2g5v

"[–]V01t45 6 points 7 days ago

The way to get firekit to transform to fireplace is as follows: 1) place firekit on the ground 2) hold either three firewood in your hands/or hold five sticks in your hands 3) aim at firekit and use action menu ("scroll wheel") and choose craft fireplace 4) you should now have a functional fireplace Take care though, fireplace now uses up the firewood and/or stick that you put inside of it and will burn only for a time, depending on the amount of fuel provided. As long as you supply it with fuel, the fireplace can be re-ignited.
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