I highly recommend you go ahead a purchase the pump mounting bracket and therminator bracket because going back and adding them later, after the burners have been attached, was a real pain.
This is a really
easy fix: Simply remove the 3 "burner to post" bolts from the burner on one side. Remove the tee-slot nut. Next drop in the square tee-slot nuts one at time to the proper position. You can now move them up and down in the tee slot with a screwdriver or similar device (nail).
To the OP:
Id say the best way to position the tiers on the TopTier (after building several at the shop), is as follows:
To keep tripping over the wheels at a minimum, keep the wheels positioned away from you. Position one wheel on the other side of the post, and the other either to the left or the right. This will position the post square to the user.
Starting from the bottom up, position the boil kettle burner closest to the user, as far as it can get to the bottom. The gas nozzle of the BK burner can be placed to either the right or left. But, because of how the gas manifold is installed, the position of the MLT burner dictates which side the gas nozzle is positioned. Since the gas manifold is mounted 180* away from the MLT, the gas nozzle on the BK will be positioned to the side opposite of the MLT. For example: If the MLT is mounted to the left side, the gas manifold is going to be on the right, and because of that, the boil kettle gas nozzle is directed to the right.
So in case you haven't figured it out already, the BK burner is mounted closest to the user and all the way down, and the MLT burner is mounted adjacent, either to the right or left of the BK. The elevation of the MLT burner is defined by the pre-boil volume elevation in the BK and the end of laughter level in the MLT. If the MLT 'end of laughter' level is above the pre-boil volume level, a complete fly sparge is possible.
The HLT is positioned to the side opposite of the MLT. And for the same reasons, its gas nozzle is positioned closest to the user, regaurdless which side the burner is mounted. The same goes for the MLT. I need to photograph this. Anyway, the HLT burner's elevation is determined by your fly sparge hot liquid delivery method. I keep my whole system as low as possible to make filling and stirring easy. To fill my HLT, i simply flop a hose down in the pot and watch the volume rise in the level gauge.
One more note: the instruction manual has a mash ton of information about how to set it up.
What do I think of mine? I Love It!