Carrier SINGLE PACKAGE ROOFTOP 48HC Installation Instructions Manual

Also see for 48TC*D: Service and maintenance instructions Installation instructions

Carrier SINGLE PACKAGE ROOFTOP 48HC Installation Instructions Manual Manual pdf 1 page image

48HCSingle Package RooftopGas Heating/Electric Cooling Unitwith Puronr (R--- 410A) RefrigerantSizes: 17, 20, 24, 28Installation InstructionsNOTE: Read the entire instruction manual before startingthe installationTABLE OF CONTENTSSAFETY CONSIDERATIONS 2. . . . . . . . . . . . . . . . . . . .INSTALLATION 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Jobsite Survey 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Step 1 -- Plan for Unit Location 9. . . . . . . . . . . . . . . . . .Roof Mount 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Step 2 -- Plan for Sequence of Unit Installation 10. . . . .Curb--Mount Installation 10. . . . . . . . . . . . . . . . . . . .Pad--Mount Installation 10. . . . . . . . . . . . . . . . . . . . .Frame--Mount Installation 10. . . . . . . . . . . . . . . . . . .Step 3 -- Inspect Unit 10. . . . . . . . . . . . . . . . . . . . . . . . . .Step 4 -- Provide Unit Support 10. . . . . . . . . . . . . . . . . .Roof Curb Mount 10. . . . . . . . . . . . . . . . . . . . . . . . .Slab Mount (Horizontal Units Only) 10. . . . . . . . . .Alternate Unit Support(In Lieu of Curb or Slab Mount) 10. . . . . . . . . . . . .Step 5 -- Field Fabricate Ductwork 14. . . . . . . . . . . . . . .Step 6 -- Rig and Place Unit 14. . . . . . . . . . . . . . . . . . . .Positioning on Curb 15. . . . . . . . . . . . . . . . . . . . . . .Step 7 -- Horizontal Duct Connection 15. . . . . . . . . . . .Step 8 -- Install Outside Air Hood — Factory Option 15. .Step 9 -- Install Flue Hood and Combustion Air Hood 16. .Step 10 -- Install Gas Piping 16. . . . . . . . . . . . . . . . . . . .Gas Supply Line 16. . . . . . . . . . . . . . . . . . . . . . . . . .Factory--Option Thru--Base Connections 18. . . . . . .Step 11 -- Install External Condensate Trap and Line 19. .Step 12 -- Make Electrical Connections 19. . . . . . . . . . .Field Power Supply 19. . . . . . . . . . . . . . . . . . . . . . . .Units without Factory--Installed Disconnect 20. . . .Units with Factory--Installed Disconnect 20. . . . . . .All Units 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Convenience Outlets 20. . . . . . . . . . . . . . . . . . . . . . .Factory--Option Thru--Base Connections 22. . . . . .Units without Thru--Base Connections 22. . . . . . . . .Field Control Wiring 22. . . . . . . . . . . . . . . . . . . . . . .Thermostat 22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Unit without Thru--Base Conversion Kit 22. . . . . . .Heat Anticipator Settings 23. . . . . . . . . . . . . . . . . . .Transformer Connectionfor 208--v Power Supply 23. . . . . . . . . . . . . . . . . . . . .Humidi--MiZerR Control Connections 24. . . . . . . . . .Humidi--MiZer -- Space RH Controller 24. . . . . . . .PremierLinkt (Factory Option) 26. . . . . . . . . . . . . . .Supply Air Temperature (SAT) Sensor 29. . . . . . . . .Outdoor Air Temperature (OAT) Sensor 29. . . . . . .EconoMi$er2 29. . . . . . . . . . . . . . . . . . . . . . . . . . . . .Field Connections 29. . . . . . . . . . . . . . . . . . . . . . . . . .Space Sensors 31. . . . . . . . . . . . . . . . . . . . . . . . . . . .Connect Thermostat 31. . . . . . . . . . . . . . . . . . . . . . .Configure the Unit for Thermostat Mode 31. . . . . .Economizer Controls 32. . . . . . . . . . . . . . . . . . . . . . . .Indoor Air Quality (CO2 ) Sensor 32. . . . . . . . . . . . .Outdoor Air Quality Sensor 32. . . . . . . . . . . . . . . . .Space Relative Humidity Sensor orHumidistat Connections 33. . . . . . . . . . . . . . . . . . . .Smoke Detector/Fire Shutdown (FSD) 34. . . . . . . . .Filter Status Switch 34. . . . . . . . . . . . . . . . . . . . . . . .Supply Fan Status Switch 34. . . . . . . . . . . . . . . . . . .Remote Occupied Switch 34. . . . . . . . . . . . . . . . . . .Power Exhaust (output) 34. . . . . . . . . . . . . . . . . . . . .CCN Communication Bus 35. . . . . . . . . . . . . . . . . .RTU Open Control System 36. . . . . . . . . . . . . . . . . . .Supply Air Temperature (SAT) Sensor 39. . . . . . . . .Outdoor Air Temperature (OAT) Sensor 39. . . . . . .EconoMi$er2 39. . . . . . . . . . . . . . . . . . . . . . . . . . . . .