Harbeth SHL5 placement

My main listening room is 24' x 14' x 10' (length, height, width). I had my previous speakers along the long wall about 30" away from the back, and a loooong way from side walls. There is an open kitchen area behind the listening position which effectively makes the room wider than 14'.

I've just purchased a pair of SHL5's. Is it generally recommended that the SHL5 be placed along the long wall, rather than along the short wall i.e., "shooting down" the length of the room?

Also, is there somewhere one can obtain a copy of the owner's manual for this speaker (PDF is fine).

Thank you!

Michael