Installing The Coil: Xaf And Xah Coils; Using The Duct Flanges: Xaf And Xah Coils - Johnson Controls XAF Series Installation Manual

Installing the coil: XAF and XAH coils

It is important to understand the following to install XAF
and XAH coils correctly:
• How to use the duct flanges if needed
• The requirements for different installation
applications
Using the duct flanges: XAF and XAH
coils
About this task: Duct flanges are built into the coil
cabinet or shipped with the coil (XAH only). If duct flanges
are necessary, complete the following steps:
Note: If you do not use the duct flanges, leave them
folded down (or uninstalled) as received from the
factory.
For integrated duct flanges, fold the flanges
1.
outward and secure the flanges in place using
screws as shown in Figure 19. For field-installed
duct flanges (XAH only), attach the flanges
(shipped in the bag with the coil) as shown in
Figure 20.
2. Use the tie plates to secure the coil to the furnace
or modular air handler as shown in Figure 21,
Figure 22, Figure 23, or Figure 24.
NOTICE
For horizontal applications, the coil cabinet can
be installed so that it is slightly pitched toward the
front or drain connection end of coil. Ensure that
the horizontal pan drains water adequately before
completing the unit install.
18 Installation Manual: XAF, XAH, and XAU Series - Full Cased and Uncased Coils for Cooling and Heat Pumps
Figure 19: Duct flanges - XAF and XAH coils
Figure 20: Field-installed duct flanges - XAH coils only
Johnson Controls Ducted Systems