Horizontal Right Installation - Mitsubishi Electric PAAA18AA1 Installation Manual

PAA-A18, 24, 30, 36, 42AA1/BA1/CA1
Auxiliary drain pan requirement
An auxiliary drain pan without a separate drain line shall be installed under the cabinet of the PAA unit. The
pan must have a minimum depth of 1.5 inches (38 mm), be not less than 3 inches (76 mm) larger than
the unit or the coil dimensions in width and length and must be constructed of corrosion-resistant material.
Galvanized sheet steel pans must have a minimum thickness of not less than 0.0236-inch (0.6010 mm) (do
not use 24 gauge). Non-metallic pans must have a minimum thickness of not less than 0.0625 inch (1.6
mm). This pan must be equipped with a water level detection device conforming to UL 508 that will shut
off the equipment served prior to overflow of the pan. The pan must be equipped with a fitting to allow for
drainage.

10.4. Horizontal right installation

The PAA unit is shipped from the factory for horizontal right configuration, no further changes are required.
If the heat exchanger assembly is removed, please follow steps 1-10 (Vertical orientation- see "Verti-
cal/Downflow installation" section) in reverse order to replace the heat exchanger back in the cabinet.
Auxiliary drain pan requirement
An auxiliary drain pan without a separate drain line shall be installed under the cabinet of the PAA unit. The
pan must have a minimum depth of 1.5 inches (38 mm), be not less than 3 inches (76 mm) larger than
the unit or the coil dimensions in width and length and must be constructed of corrosion-resistant material.
Galvanized sheet steel pans must have a minimum thickness of not less than 0.0236-inch (0.6010 mm) (Do
not use 24 gauge). Non-metallic pans must have a minimum thickness of not less than 0.0625 inch (1.6
mm). This pan must be equipped with a water level detection device conforming to UL 508 that will shut
off the equipment served prior to overflow of the pan. The pan must be equipped with a fitting to allow for
drainage.
Specifications are subject to change without notice. 59 © 2022 Mitsubishi Electric US, Inc.