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 “sweat- ing” the DPI accessory insulation kit is to be used when per- forming this conversion. NOTE: The DPI kit is not supplied with this product and is to be purchased separately. See Table 7 for the correct DPI kit.

ASPF	Insulation Kit

1830	DPI36-42/20

3137 / 4260	DPI48-61/20

Table 7

Refer to Figures 3 through 5 for the location of the compo- nents referenced in the following steps. Figure 3 illustrates the new installation location for the removed components.

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 access panel.

4.Remove the two (2) zee coil support brackets and insu- lation retaining brackets.

5.Remove the tie bracket.

6.Install the DPI Insulation Kit onto the bottom of the drain pan.

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 in Figure 4.

3” FLAT INSULATION RETAINER

(BOTH SIDES)

Figure 4

To complete the conversion, slide the evaporator coil into the chassis and attach the three (3) access panels. (Figure 5).

WRAPPER

INSULATION

JACKET

ZEE COIL

SUPPORT

WRAPPER

STIFFENER

DRAIN PAN

INSULATION KIT

ACCESS PANEL

RETURN AIR SIDE

OF UNIT

REAR CHANNEL

BRACKET

ZEE COIL

SUPPORT BRACKET

COIL RETAINING BRACKET

TIE BRACKET

BLOWER

ASSEMBLY

Figure 5

NOTE: When converted to downflow position, the coil may protrude above the cabinet on some models.

Horizontal Conversion

NOTE: The filter provision is not applicable

in THIS downflow application.

Figure 3

The only field modification required for conversion to “Hori- zontal Right-Hand” is the removal of the plastic knockouts in the horizontal panel drain connections. To prevent the hori- zontal drain pan from sweating in high humidity applications, it is recommended that a DPIH insulation accessory kit be used. NOTE: The DPIH insulation kit is not supplied with this product and should be purchased separately. See Table 8 for the correct DPIH kit.