Carrier 50TC Manuals

50TC Cooling Only/Electric Heat Packaged Rooftop 3 to 12.5 Nominal Tons Product Data C08613 This product has been designed and manufactured to meet Energy Star® criteria for energy efficiency. However, proper refrigerant charge and proper air flow are critical to achieve rated capacity and efficiency. Installation of this product should follow all manufacturer’s refrigerant charging and air flow instructions. Failure to confirm proper charge and air flow may reduce energy efficiency and shorten equipment life. the environmentally sound refrigerant

Installation Instructions 50TC Single Package Rooftop Cooling Only with Puronr (R---410A) Refrigerant Sizes 08, 12, and 14 with NovationR Coil Sizes 08 --- 14 with Round Tube/Plate Fin Coil NOTE: Read the entire instruction manual before starting the installation. TABLE OF CONTENTS SAFETY CONSIDERATIONS 2 . . . . . . . . . . . . . . . . . . . . Rated Indoor Airflow (cfm) 3 . . . . . . . . . . . . . . . . . . INSTALLATION 8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Jobsite Survey 8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Step 1 -- Plan for Unit Location 8 . . . . . . . . . . . . . . . . . . Roof Mount 8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Step 2 -- Plan for Sequence of Unit Installation 8 . . . . . . Curb--Mount Installation 9 . . . . . . . . . . . . . . . . . . . . . Pad--Mount Installation 9 . . . . . . . . . . . . . . . . . . . . . . Frame--Mount Installation 9 . . . . . . . . . . . . . . . . . . . . Step 3 -- Inspect Unit 9 . . . . . . . . . . . . . . . . . . . . . . . . . . . Step 4 -- Provide Unit Support 9 . . . . . . . . . . . . . . . . . . . Roof Curb Mount 9 . . . . . . . . . . . . . . . . . . . . . . . . . . Slab Mount (Horizontal Units Only) 9 . . . . . . . . . . . Alternate Unit Support (In Lieu of Curb or Slab Mount) 9 . . . . . . . . . . . . . . Step 5 -- Field Fabricate Ductwork 11 . . . . . . . . . . . . . . . Step 6 -- Rig and Place Unit 12 . . . . . . . . . . . . . . . . . . . . Positioning on Curb 12 . . . . . . . . . . . . . . . . . . . . . . . Step 7 -- Convert to Horizontal and Connect Ductwork 12 Step 8 -- Install Outside Air Hood 12 . . . . . . . . . . . . . . . Economizer and Two Position Damper Hood Package Removal and Setup — Factory Option 12 . . Economizer Hood and Two--Position Hood 13 . . . . . Step 9 -- Install External Condensate Trap and Line 14 . Step 10 -- Make Electrical Connections 14 . . . . . . . . . . . Field Power Supply 14 . . . . . . . . . . . . . . . . . . . . . . . . Units with Factory--Installed Non--Fused Disconnect 15 . . . . . . . . . . . . . . . . . . . . . Units without Factory--Installed Non--Fused Disconnect 16 . . . . . . . . . . . . . . . . . . . . . All Units 16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Convenience Outlets 16 . . . . . . . . . . . . . . . . . . . . . . . Factory--Option Thru--Base Connections 18 . . . . . . . Units without Thru--Base Connections 18 . . . . . . . . . Field Control Wiring 18 . . . . . . . . . . . . . . . . . . . . . . . Thermostat 18 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Unit without Thru--Base Connection Kit 18 . . . . . . . Heat Anticipator Settings 19 . . . . . . . . . . . . . . . . . . . Electric Heaters 19 . . . . . . . . . . . . . . . . . . . . . . . . . . . . Single Point Boxes and Supplementary Fuses 20 . . . Single Point Boxes without Fuses 20 . . . . . . . . . . . . Low--Voltage Control Connections 20 . . . . . . . . . . . . Humidi--MiZerR System Control Connections 21 . . . . Humidi--MiZer System — Space RH Controller 21 . . EconoMi$erR X (Factory--Installed Option) 21 . . . . . . PremierLinkt (Factory--Installed Option) 23 . . . . . . . Supply Air Temperature (SAT) Sensor 26 . . . . . . . . . Outdoor Air Temperature (OAT) Sensor 26 . . . . . . . EconoMi$er2 26 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Field Connections 26 . . . . . . . . . . . . . . . . . . . . . . . . . . Space Sensors 28 . . . . . . . . . . . . . . . . . . . . . . . . . . . . Connect Thermostat 28 . . . . . . . . . . . . . . . . . . . . . . . Configure the Unit for Thermostat Mode 28 . . . . . . Economizer Controls 29 . . . . . . . . . . . . . . . . . . . . . . . . Indoor Air Quality (CO2) Sensor 29 . . . . . . . . . . . . . Outdoor Air Quality Sensor 29 . . . . . . . . . . . . . . . . . Space Relative Humidity Sensor or Humidistat Connections 30 . . . . . . . . . . . . . . . . . . . . Smoke Detector/Fire Shutdown (FSD) 30 . . . . . . . . . Filter Status Switch 31 . . . . . . . . . . . . . . . . . . . . . . . . Supply Fan Status Switch 31 . . . . . . . . . . . . . . . . . . . Remote Occupied Switch 31 . . . . . . . . . . . . . . . . . . . Power Exhaust (output) 31 . . . . . . . . . . . . . . . . . . . . . CCN Communication Bus 31 . . . . . . . . . . . . . . . . . . RTU Open Controller System 33 . . . . . . . . . . . . . . . . . Supply Air Temperature (SAT) Sensor 36 . . . . . . . . . Outdoor Air Temperature (OAT) Sensor 36 . . . . . . . EconoMi$er2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Catalog No. 04-53500263-01 Printed in U.S.A. Form 50TC-18-29-H-03SI Pg 1 9-19 Replaces: 50TC-18-29-H-02SI Installation Instructions CONTENTS SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . 1 GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Rated Indoor Airflow (cfm) . . . . . . . . . . . . . . . . . . . . . 2 INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Job-Site Survey . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Step 1 — Plan for Unit Location . . . . . . . . . . . . . . . . 16 • ROOF MOUNT Step 2 — Plan for Sequence of Unit Installation . . . 16 • PAD-MOUNTED INSTALLATION • FRAME-MOUNTED INSTALLATION • CURB-MOUNTED INSTALLATION Step 3 — Inspect Unit . . . . . . . . . . . . . . . . . . . . . . . . 16 Step 4 — Provide Unit Support. . . . . . . . . . . . . . . . . 16 • SLAB MOUNT • ROOF CURB MOUNT • ALTERNATE UNIT SUPPORT (IN LIEU OF CURB MOUNT) Step 5 — Rig and Place Unit . . . . . . . . . . . . . . . . . . . 21 • POSITIONING ON CURB Step 6 — Field Fabricate Ductwork . . . . . . . . . . . . . 21 Step 7 — Horizontal Duct Connection . . . . . . . . . . . 21 Step 8 — Install Outside Air Hood (Factory Option) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 • TO REMOVE THE HOOD PARTS PACKAGE: Step 9 — Install External Condensate Trap and Line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Step 10 — Make Electrical Connections . . . . . . . . . 23 • FIELD POWER SUPPLY • UNITS WITHOUT FACTORY-INSTALLED NON- FUSED DISCONNECT • UNITS WITH FACTORY-INSTALLED NON-FUSED DISCONNECT • ALL UNITS • CONVENIENCE OUTLETS • FACTORY-OPTION THRU-BASE CONNECTIONS • UNITS WITHOUT THRU-BASE CONNECTIONS • FIELD CONTROL WIRING • THERMOSTAT • UNIT WITHOUT THRU-BASE CONNECTION KIT • HEAT ANTICIPATOR SETTINGS • TRANSFORMER CONNECTION FOR 208-V POWER SUPPLY Electric Heaters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 • LOW-VOLTAGE CONTROL CONNECTIONS Humidi-MiZer® Control Connections . . . . . . . . . . . .29 • HUMIDI-MIZER – SPACE RH CONTROLLER EconoMi$er® X (Factory-Installed Option). . . . . . . .31 • PRODUCT DESCRIPTION • SYSTEM COMPONENTS • SPECIFICATIONS • OUTPUTS • ENVIRONMENTAL • ECONOMIZER MODULE WIRING DETAILS • S-BUS SENSOR WIRING • CO2 SENSOR WIRING • INTERFACE OVERVIEW • USER INTERFACE • KEYPAD • MENU STRUCTURE • SETUP AND CONFIGURATION • TIME-OUT AND SCREENSAVER • ENTHALPY SETTINGS • TWO-SPEED FAN OPERATION • CHECKOUT • TROUBLESHOOTING Staged Air Volume (SAV™) with Variable Frequency Drive (Factory Option) . . . . . . . . . . . . . . . . . . . . . .44 PremierLink™ Control . . . . . . . . . . . . . . . . . . . . . . . .44 RTU Open Control System. . . . . . . . . . . . . . . . . . . . .44 Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44 Smoke Detectors. . . . . . . . . . . . . . . . . . . . . . . . . . . . .56 • RETURN AIR SENSOR TUBE INSTALLATION • SMOKE DETECTOR TEST MAGNET • ADDITIONAL APPLICATION DATA Step 11 — Adjust Factory-Installed Options . . . . . .57 • ECONOMI$ER® IV OCCUPANCY SWITCH Step 12 — Install Accessories. . . . . . . . . . . . . . . . . .57 Step 13 — Check Belt Tension . . . . . . . . . . . . . . . . .57 • BELT FORCE — DEFLECTION METHOD • BELT TENSION METHOD Pre-Start and Start-Up . . . . . . . . . . . . . . . . . . . . . . . .58 START-UP CHECKLIST . . . . . . . . . . . . . . . . . . . . .CL-1 SAFETY CONSIDERATIONS Installation and servicing of air-conditioning equipment can be hazardous due to system pressure and electrical components. Only trained and qualified service personnel should install, repair, or service air-conditioning equipment. 50TC units for installation in the United States contain use of Carrier's Staged Air Volume (SAV™) 2-speed indoor fan control system. This complies with the U.S. Department of Energy (DOE) efficiency standard of 2018. 50TC units for installation outside the United States may or may not contain use of the SAV 2-speed indoor fan control system as they are not required to comply with the U.S. Department of Energy (DOE) efficiency standard of 2018. For specific details on operation of the Carrier SAV 2-speed indoor fan system refer to the Variable Frequency Drive (VFD) Factory-Installed Option 2-Speed Motor Control Installation, Setup, and Troubleshooting manual. WeatherMaker® 50TC 18-29 Single Package Rooftop with Cooling Only Horizontal Airflow Unit with Puron® (R-410A) Refrigerant