How to install MarketAir rough-in boxes

  • Install Lineset and Cable First, line up the RoughinBox base with the mark on the studs. Insert the box in between the studs and attach it in place by using the four integral mounting brackets.



MarketAir RoughinBox Installation

Preparing the RoughinBox

Select 1/2 inch or 1/4 inch port as needed when you are using a cable port. Now, you have to cut as X marked on the top of the port with a utility knife and push the cable through the opening. This will create an integral strain relief bushing for preventing the cable from pulling out by itself.

If your box includes five lineset ports one on each end, one on the bottom, and two on top. For the bottom or top line ports, line sets from the evaporator should run from right to left so facing front of RoughinBox. You have to try always to bring lineset into the box from the left to avoid a difficult connection to the evaporator. Make sure that you keep lineset entry orifice as small as possible by using the cut lines available on top of the line port cap. Do not cut below the marked line as it damages the slot which retains the mounting adaptor.

Do not remove the closure cap at end of the drain outlet when you are using a condensate pump. For gravity drain, the box has a bi-directional drain outlet with 1/6" MIPT threads which offers two choices, i.e., side discharge and bottom discharge. You can check the owner's manual to get complete details on this.

Remove all four mounting adaptors from slots at both ends of the box and invert them. So, you have to fix holes on the top face up and fix holes on the bottom face down and replace them with the same slot.

Check brands installation instructions to find the minimum distance between evaporator and ceiling and you can note these dimensions on studs. Generally, the recommended minimum dimension between baseline and ceiling is 20 inches. Later, position the mini-split rough in the new construction box correctly with the evaporator and mark studs accordingly.

If studs are metal, you need to determine which end of the box will face the open side of the stud. Also, extend mounting adaptors on that end to their full length of 1 1/8 inches so that they reach the stud to touch flat surfaces and lock them into the position. If studs are wood, you no need to extend the mounting adaptors and can use them for fixing.

                        https://www.partsxp.com/marketair

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