JOHNSON CONTROLS
39
SECTION 3 - HANDLING, STORAGE, AND INSTALLATION
FORM 102.20-N1 
ISSUE DATE: 7/06/2016
3
INSTALLING INDOOR SOLUTION XT AHU
Before installing the indoor AHU, identify the shipped 
loose parts such as gaskets as shown in Figure 22 on 
page 30 through Figure 39 on page 33.
Do not damage factory installed pipe 
chase, electrical cabinet, hoods, pipe 
stubs, door handles or roof overhang 
when installing AHU.
If the AHU or AHU sections are too 
large to t through an opening, contact 
the local Johnson Controls Field Service 
Ofce for assistance. Technical instruc-
tions are available for disassembly and 
reassembly.
Before placing the skids together:
1.  If applicable, remove the metal bracket attached 
to the cross channel and wood shipping blocks 
before assembling the shipping splits. 
2.  If AHU sections are going to be assembled before 
placing them, be sure the sections are on a at
surface during assembly. 
3.  Verify the correct sections and orientation of each 
section.
4.  Remove the cross brace(s) (shipping supports) 
from each section’s shipping split.
5.  Remove the plastic shipping covers and supports.
6.  Apply neoprene gasket (P/N 028-15954-010) to 
one side only of each shipping split as shown in 
Figure 53 on page 39. If there is a door frame 
at the shipping split, apply neoprene gasket (P/N 
028-11873-010) as shown in Figure 54 on page 
39. Make sure the entire perimeter is covered 
with the gasket material, including the foamed 
corners as shown in Figure 54 on page 39. Any 
void, depression, or protrusion will allow air or 
water leakage. Make any splices on a straight run.
LD13779
FIGURE 53 - USE GASKET (P/N 028-11883-010) AT 
SHIPPING SPLIT
GASKET
DOOR 
FRAME 
FLANGE
LD13380a
FIGURE 54 - USE GASKET (P/N 028-11873-010) TO 
DOOR FRAME AT SHIPPING SPLIT
CONNECTORS 
OUT OF 
THE WAY
PANEL 
FLANGE
GASKET
Installing a Solution XT AHU with Expanded 
Cabinet 
If the AHU has an expanded cabinet with end channel 
shipping splits, use the following steps to install it:
1.  Remove the shipping brackets in corners.
2.  Clean the metal surface where gasket is to be ap-
plied with mineral denatured alcohol or rubbing 
alcohol.