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Step 21: Replace pipe panel (using the 5 screws).
CAUTION
Auxiliary drain pan requirement
An auxiliary drain pan without a separate drain line shall be installed under the furnace.
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.
10.3. Horizontal left installation
To remove the heat exchanger from the cabinet, perform steps 1-10 detailed in "Upflow/Downflow
installation" section.
NOTE
Side drain pan must be relocated for horizontal left installations.
Specifications are subject to change without notice.
PAA-A18, 24, 30, 36, 42AA1/BA1/CA1
50
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