2TABLE OF CONTENTSPAGEFEATURES AND BENEFITS 3. . . . . . . . . . . . . . . . . . . .MODEL NUMBER NOMENCLATURE 4. . . . . . . . . . . .FACTORY OPTIONS AND/OR ACCESSORIES 5. . . . .AHRI COOLING RATING TABLES 9. . . . . . . . . . . . . . .HEAT RATING TABLE 10. . . . . . . . . . . . . . . . . . . . . . . .SOUND PERFORMANCE TABLE 11. . . . . . . . . . . . . . .PHYSICAL DATA 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . .CURBS & WEIGHTS DIMENSIONS 19. . . . . . . . . . . . .PAGEAPPLICATION DATA 31. . . . . . . . . . . . . . . . . . . . . . . . .COOLING TABLES 34. . . . . . . . . . . . . . . . . . . . . . . . . . .STATIC PRESSURE ADDERS 55. . . . . . . . . . . . . . . . . .FAN PERFORMANCE 59. . . . . . . . . . . . . . . . . . . . . . . . .ELECTRICAL INFORMATION 78. . . . . . . . . . . . . . . . .SEQUENCE OF OPERATION 85. . . . . . . . . . . . . . . . . . .GUIDE SPECIFICATIONS 85. . . . . . . . . . . . . . . . . . . . . .The Carrier rooftop unit (RTU) was designed by customers for customers. With “no--strip screw” collars, handled accesspanels, and more we’ve made your unit easy to install, easy to maintain and easy to use.Easy to install:All WeatherMakerr units are field--convertible to horizontal air flow which makes it easy to adjust to unexpected job sitecomplications. Lighter units make easy replacement. Most Carrier 48TC rooftops fit on existing Carrier curbs dating backto 1989. Also, our large control box gives you room to work and room to mount Carrier accessory controls.Easy to maintain:Easy access handles by Carrier provide quick and easy access to all normally serviced components. Our “no--strip” screwsystem has superior holding power and guides screws into position while preventing the screw from stripping the unit’smetal. Take accurate pressure readings by reading condenser pressure with panels on. Simply remove the black, compositeplug, route your gauge line(s) through the hole, and connect them to the refrigeration service valve(s).Easy to use:The newly designed, central terminal board by Carrier puts all your connections and troubleshooting points in oneconvenient place, standard. Most low voltage connections are made to the same board and make it easy to find what you’relooking for and easy to access it. Carrier rooftops have high and low pressure switches, a filter drier, and 2--in (51mm)filters standard.