To complete the conversion, slide the evaporator coil into
the chassis and attach the three (3)access panels.(Figure 7).
CONVERSION TO HORIZONTAL
The “B” series product is not suitable for horizontal application and must not be used for this type of installation. The following describes converting to “Horizontal Left- Hand”. The only field modification required for conversion to “Horizontal
TOP OF WRAPPER
INSULATION JACKET
ZEE COIL SUPPORT
WRAPPER STIFFENER
DRAIN PAN INSULATION
DPI KIT (HATCHED AREA)
BLOWER
NEOPRENE GASKET
MOTOR
Figure 7
As shown in Figure 8, it is recommended that the conversion to horizontal be performed before placing the air handler in its final location and in an area that allows for access to all sides.
1.Remove the (3) air handler access panels.
2.Remove the “J” shaped bracket that retains the evaporator coil.
3.Remove the flowrater (or TXV) from the lower left side access panel and slide out the evaporator coil and horizontal drain pan.
4.Remove the gasket from the horizontal pan drain connections.
5.Remove the oval shaped plastic plug from the left side access panel. Remove the oval shaped rubber gasket seal from the lower right side access panel.
6.The drain connections for the horizontal pan are sealed with a thin coating of plastic. Carefully knock out this plastic seal with a screwdriver and hammer. Note:
The upper drain will become the secondary drain which is mandatory in many municipalities .
7.Install the plastic plug removed in step 5 to the right side lower access panel and the oval shaped rubber gasket to the lower left access panel.
8.Reinstall the evaporator coil with the horizontal panel on the left side. Note: Push the assembly completely to the rear to ensure the engagement of the upflow pan with the rear channel bracket.
9.Install the “J” bracket (removed in step 2) to support the upflow pan to the tie channel.
10.Attach all panels and the refrigerant management device.
Secondary Drain
Primary Drain
Figure 8
CONDENSATE REMOVAL
The drain pan has a primary and secondary drain connection (Figure 8). Condensate removal is performed by attaching a ¾” PVC pipe to the evaporator coil pan and terminated in accordance with local or state Plumbing/ HVAC codes. The installation must include a “P” style trap that is located as close as is practical to the evaporator coil. Exercise caution not to
Installations that are above a finished ceiling may require a field supplied auxiliary drain pan. Consult local codes on this requirement.
DRAIN |
| |
CONNECTION |
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UNIT |
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2" MINIMUM |
| |
FLEXIBLE |
| |
TUBING (HOSE | 3" MINIMUM | |
OR PIPE) | ||
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POSITIVE LIQUID |
| |
SEAL (REQ'D) |
|
Figure 9
Use of a condensate removal pump is permitted when necessary. This condensate pump should have provisions for shutting off the control voltage should a blocked drain occur. A trap must be installed between the unit and the condensate pump.
9 | 08/04 | |
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