18-GE12D1-8
7
Installer’s Guide
HORIZONTAL LEFT
a.
For maximum efficiency
and Customer ease of
filter maintenance, it is recommended that a
properly sized
remote filter
and grille be in-
stalled for horizontal applications. Airflow should
not exceed the face velocity of the filter being
used.
The factory installed filter should
then be removed from the unit
.
b. To convert the unit to horizontal left, front ac-
cess, slide the coil out on the coil channel sup-
ports and rotate the complete coil 180 degrees.
c. Remove the factory installed baffle assembly
from the apex of the coil by using a 5/16"
nutdriver to remove the hex head screw. There
is a coil support tab at the top of the coil con-
nected to the case must be removed first. Re-
place this baffle with the factory supplied narrow
coil baffle using the screws removed previously.
See Figure 9.
d. The coil is then inserted back into the cabinet on
the opposite side coil channel supports. The unit
is now horizontal left with front access. Do not
reattach coil support tab.
e. If the unit is suspended, it must be supported
from the bottom near both ends as well as the
middle to prevent sagging. The service access
must remain unobstructed. If the unit is sup-
ported along the length of the front and back
with rails, the air handler only needs to be sus-
pended at both ends. See Figure 14.
Figure 13
Electrical Knockout Sticker Sheet
If the unit is not suspended it must be supported
as mentioned above and isolated carefully to pre-
vent sound transmission. Vibration isolators (pur-
chased locally) must be placed under the unit.
f. It is always recommended that an auxiliary drain
pan be installed under a horizontal air handler
(See Condensate Piping) to prevent possible dam-
age to ceilings.
g. Isolate the auxiliary drain pan from the unit or
from the structure.
h. Connect the auxiliary drain line to a separate
drain line (no trap is needed in this line) and ter-
minate according to national and local codes.
i. If a return duct is connected to the air handler, it
must be the same dimensions as the return
opening shown in the outline drawing on page
14.
j.
Openings where field wiring enters the
cabinet must be completely sealed.
Location
of power entry is shown on the outline drawing.
Use 2.5" clear stickers provided to seal all unused
electrical knockouts. See Figure 13.
k. After ductwork connections are made, seal air-
tight and per Local codes.
Rail
Figure 14
