Install Instructions

8
7. Replace access panels, suction line grommet, insula-
tion and all screws.
RUBBER
GROMMET
SUCTION LINE
WITH SPIN CLOSURE
Suction Line Grommet
A IRFLOW C ONVERSIONS
DOWNFLOW CONVERSION
Conversion to downflow MUST be performed in an area that
allows access to all sides prior to placing the air handler in
its final location. To prevent the evaporator coil pan from
“sweating”, a drain pan insulation (DPI) accessory kit is to
be used when performing this conversion. NOTE: The DPI
kit is not supplied with this product and is to be purchased
separately. See the following Drain Pan Insulation Kit table
for the correct DPI kit.
AVPTC Model Insulation Kit
1830 DPI36-42/20
3137
4260
DPI48-61/-20
Drain Pan Insulation Kits
Refer to Figures Downflow Conversion - Conversion Prepa-
ration, Downflow Conversion - Insulation Retainers, and
Downflow Conversion - Conversion Completion for the lo-
cation of the components referenced in the following steps.
Figure Downflow Conversion - Conversion Preparation il-
lustrates the new installation location for the removed com-
ponents.
1. Before inverting the air handler, remove all access pan-
els, the coil rear channel bracket, and the filter close-
off panel.
2. Remove the evaporator coil and the horizontal drain
pan. Discard horizontal drain pan.
3. Install the provided plastic plug into the vacated ac-
cess panel.
4. Remove the two (2) zee coil support brackets and in-
sulation retaining brackets.
5. Remove the tie bracket.
6. Install the DPI Insulation Kit onto the bottom of the drain
pan.
NOTE: The filter provision is not applicable
in THIS downflow application.
ACCESS
PANEL
RETURN AIR SIDE
OF UNIT
REAR CHANNEL
BRACKET
ZEE COIL
SUPPORT BRACKET
COIL RETAINING
BRACKET
TIE BRACKET
Downflow Conversion - Conversion Preparation
7. Install the zee coil supports and the wrapper stiffeners.
8. Install the tie bracket.
9. Install the rear channel bracket.
10. To prevent possible condensate “blow off” the insula-
tion retainers are to be laid into the evaporator coil pan
as shown.
3” FLAT INSULATION
RETAINER (BOTH SIDES)
Downflow Conversion - Insulation Retainers
To complete the conversion, slide the evaporator coil into
the chassis and attach the three (3) access panels.