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4
DFK-B
Downflow Kit
DFK-C
Downflow Kit
DFK-D
Downflow Kit
ARUF18B14**
ARUF30C14**
ARUF48D14**
ARUF24B14**
ARUF36C14**
ARUF60D14**
ARUF30B14**
ARUF42C14**
ARPT36D14**
ARPT18B14**
ARPT36C14**
ARPT42D14**
ARPT24B14**
ASPT30C14**
ARPT48D14**
ARPT30B14**
ASPT36C14**
ARPT60D14**
ASPT24B14**
ASUF39C14**
ASUF59D14**
ASUF29B14**
ASUF49C14**
ASPT42D14**
ASPT48D14**
ASPT60D14**
MODEL LIST FOR DOWNFLOW KITS
DOWNFLOW KIT
Table 1
Refer to Figure 6 and 7 for the location of the compo-
nents referenced in the following steps.
1. Before inverting the air handler, remove blower access
panel and coil access panel. The coil access panel and
tubing panel may remain screwed together during this
procedure. Remove and retain the seven (7) screws se-
curing the coil access panel to the cabinet and the six
(6) screws securing the blower access panel to the cabi-
net.
2. Slide the coil assembly out using the drain pan to pull
the assembly from the cabinet.
NOTE: DO NOT USE MANIFOLDS OR FLOWRATOR
TO PULL THE COIL ASSEMBLY OUT. FAILURE TO
DO SO MAY RESULT IN BRAZE JOINT DAMAGE
AND LEAKS.
3. Removal of the center support is required on units with
21" wide cabinet. Remove and retain the two (2) screws
that secure the center support to the cabinet. Remove
the center support.
4. Using the drain pan to hold the coil assembly, slide the
coil assembly back into the cabinet on the downflow
brackets as shown in Figure 8.
5. Re-install the center support (if removed) using the two
(2) screws removed in Step 4.
6. Re-install the access panels removed in Step 1 as shown
in Figure 9.
7. The bottom left drain connection is the primary drain for
this application and condensate drain line must be at-
tached to this drain connection. The top connection of
the three drain connections on the drain pan must re-
main plugged for this application. The bottom left drain
connection is for the secondary drain line (if used).
6.1 Upflow Installation
No field modifications are mandatory however to obtain
maximum efficiency, the horizontal drip shield must be
removed.
Drip Shield Removal:
Refer to Figure 1, remove the two
(2) screws that secure the drip shield support brackets to
the condensate collectors (one screw per side). Remove
the two (2) screws that secure the drip shield to the drain
pan. The drip shield and drip shield brackets may now
be removed.
The bottom left drain connection is the primary drain for
this application and condensate drain line must be at-
tached to this drain connection. The top connection of
the three drain connections on the drain pan must re-
main plugged for this application. The bottom right drain
connection is for the secondary drain line (if used).
Screw
Screw
DRIP SHIELD REMOVAL
Figure 1
6.2 Horizontal Left Installation
No field modifications are permissible for this applica-
tion.
The bottom right drain connection is the primary drain for
this application and condensate drain line must be at-
tached to this drain connection. The top connection of
the three drain connections on the drain pan must re-
main plugged for this application. The bottom left drain
connection is for the secondary drain line (if used).
6.3 Downflow/Horizontal Right Installation
IMPORTANT NOTE:
In the downflow application, to pre-
vent coil pan “sweating”, a downflow kit (DFK) is avail-
able through your local distributor. The DFK is not sup-
plied with the air handler and is required by the manufac-
turer on all downflow installations. See
Table 1
for the
correct DFK and follow the instructions provided for in-
stallation.