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Configuring the VAHU for Vertical Downflow Installation
The 4-way Vertical Air Handling Unit is factory ready for vertical up or horizontal left installation. Ver-
tical down installation requires field reconfiguration of the indoor unit. For vertical down, the downflow
conversion kit is required.
Downflow kit PNDFJ0 is required for 12-30MBH NJ chassis units.
1. Remove front panels and supports. Retain all except bottom front panel. Bottom front panel is
replaced by a panel in the kit (Figure 14).
2. Remove pipe in and out sensors and temporarily store in the blower section (Figure 15).
3. Carefully slide the evaporator coil/drain pan assembly out of the cabinet (Figure 16).
apply excessive force on the piping as it may result in refrigerant leaks.
4. Remove the horizontal drain pan from the assembly. Field scrap the drain pan.
5. Rotate the VAHU cabinet 180º (Figure 17).
6. Install the conversion kit left and right rear vertical brackets in the rear corners of the cabinet (Fig-
ure 18).
Figure 14: Remove Front Panels and Supports.
Figure 16: Evaporator Coil/ Drain Pan Assembly.
Horizontal
Drain Pan
GENERAL INSTALLATION GUIDELINES
Field scrap panel
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. "LG" is a registered trademark of LG Corp.
Vertical Downflow Installation
Do not
Figure 15: Sensors and Wiring.
Figure 17: Rotate Cabinet.
Pipe In/Out
Sensors and
Wiring
Rotated
180°
21
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