York SOLUTION XTI Series, Installation And Assembly Manual

Page: 59 / 108

JOHNSON CONTROLS
59
SECTION 3 - HANDLING, STORAGE, AND INSTALLATION
FORM 102.20-N1
ISSUE DATE: 7/06/2016
3
Seal Pipe Chase to Solution XT AHU
1. If the AHU is equipped with base rails, apply
caulking to all exterior joints between the pipe
chase, and the base rails as shown in Figure 89
on page 59 .
CAULK AT
DOTTED
LINE
FIGURE 89 -
APPLY CAULK TO SOLUTION XT
BASE RAIL
LD12035a
AHU
PIPE
CHASE
2. Add a small bead of Manus Bond, Loctite, or
Bostik champagne caulking to the exterior verti-
cal seam between the AHU and the pipe chase to
insure a complete seal as shown in
Figure 90 on
page 59 . Pay special attention to the top and
bottom corners, raceway and base rail engage-
ments, and under the roof overhang .
3. Starting at the center and working toward each
end, run the self-drilling screws down through
the AHU overhang into the top of the pipe chase
through the gasket. Use caution not to strip the
20-gauge housing with the screws. Line up the
screws with a double row of screws on top of the
AHU raceway, plus one spaced evenly between
each screw as shown in Figure 91 on page 59 .
(No caulking required.)
FIGURE 91 -
INSTALL PIPE CHASE TO SOLUTION
XT ROOF
LD16554
PIPE CHASE
SELF-DRILLING SCREWS
Install Cover Angles
1. Install the cover angles before the caulking ap-
plied to the exterior joints and base rails dries.
2. Apply the neoprene gasket (P/N 028-11880-010)
to the contact side of the cover angle.
3. Remove the top and bottom self-drilling screws
from the pipe chase and set aside for later use.
4. Place the cover angles in the vertical corners of
the pipe chase and AHU wall.
5. Install the cover angles into the vertical corners of
the pipe chase and AHU wall as shown in
Figure
92 on page 59 . The notch on the cover angle
must be on the AHU side.
FIGURE 92 -
INSTALL COVER ANGLE
LD12564
PIPE
CHASE
AHU
COVER
ANGLE
FIGURE 90 -
APPLY CAULK BETWEEN PIPE
CHASE AND SOLUTION XT AHU
LD12565
PIPE
CHASE
AHU
APPLY
CAULK