From inside (document excerpt):
24APA3 Performancet Series Air Conditioner with Puronr Sizes 18 to 60 1 1/2 to 5 Nominal Tons Wiring Diagrams Fig. 1 Wiring Diagram — Model sizes 18 – 48, 208/230-1 NOTE: Must use thermostat and sub-base or Infinityt Control as stated in pre-sale literature. Fig. 2 Wiring Diagram — Model size 60, 208/230-1 NOTE: Must use thermostat and sub-base or Infinityt Control as stated in pre-sale literature.
2006 Carrier Corp. S 7310 W. Morris St. S Indianapolis, IN 46231 Printed in U.S.A. Edition Date: 04/06 Catalog No: 24APA3- 1W Replaces: New Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.