4
18-AD42D1-1B-EN
Installer’s Guide
G. FURNACE IN HORIZONTAL LEFT POSITION
CAUTION
!
Both the coil and furnace must be fully supported. Screws and
standoffs are provided for alignment only.
Figure 11
AIRFLOW
FURNACE
DUCT
SPLASH
GUARD
CASED COIL
APEX OF COIL POINTS
AWAY
FROM FURNACE
Figure 10
1. HORIZONTAL LEFT COIL CONVERSION.
While not required, optimal removal of some coil
components will maximize airflow efficiency.
a. Remove the coil by sliding the coil out of the coil
enclosure.
b. If present, remove the (2) outer water diverter baffles.
See Figure 2.
2. Splash Guard installation is required to prevent water
blowoff.
a. Place Channel for Splash Guard into Horizontal Drain
Pan as shown in Figure 9.
b. Slide the new Horizontal Drain Pan onto the coil and
slide back into the coil cabinet.
c. Bend rear tab on top baffle inward towards the coil to
avoid interference with splash guard. See Figure 12.
d. Wedge flange of Splash Guard between Channel for
Splash Guard and Horizontal Drain Pan as shown in
Figure 11.
e. Drive one field-supplied sheet metal screw into Splash
Guard through factory-provided clearance hole in the
front duct flange on the coil case. Refer to Figure 11.
3. Attach the coil and furnace in the orientation shown
in Figure 10. For S-Series furnaces, bend flanges to
accommodate installation as shown in Figure 5.
4. Insert standoffs into clearance holes in coil cabinet and
use self-drilling screws to align coil and furnace. See
Figure 3. Seal all gaps between the furnace and coil.
NOTE:
Screws and standoffs are for alignment only. Equipment
must be fully supported when installed in horizontal.
Figure 12
BACK TAB IS BENT
DOWNWARDS
SPLASH
GUARD
Figure 9
CHANNEL
HORIZONTAL DRAIN PAN
