Carrier Infinity 480CEN024 Installation Instruction

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Installation Instructions
NOTE: Read the entire instruction manual before starting the
installation.
NOTE: Installer: Make sure the Owner's Manual and Service
Instructions are left with the unit after installation.
TABLE OF CONTENTS
Page
SAFETY CONSIDERATIONS ........................ 1
INTRODUCTION .................................. 2
RECEIVING AND INSTALLATION ................ 2-15
Check Equipment ................................. 2
Identify Unit ................................... 2
Inspect Shipment ................................ 2
Provide Unit Support .............................. 2
Roof Curb ..................................... 2
Slab Mount .................................... 2
Ground Mount ................................. 2
Field Fabricate Duc_vork ........................... 2
Provide Clearances ................................ 3
Rig and Place Unit ................................ 3
Inspection ..................................... 3
Use of Rigging Bracket ........................... 3
Connect Condensate Drain .......................... 8
Install Flue Hood .................................. 8
Install Gas Piping ................................ 11
Install Duct Connections ........................... 12
Configuring Units for Downflow (Vertical)
Discharge .................................... 12
Install Electrical Connections ....................... 12
Transfornmr Protection .......................... 13
High- Voltage Connections ....................... 13
Special Procedures for 208-V Operation ............. 14
Control Voltage Connections ...................... 14
Optional Accessories .............................. 14
Outdoor Air Thermistor (OAT) .................... 14
Humidifier Connections ......................... 15
Electronic Air Cleaner ........................... 15
PRE-START-UP ............................... 15-16
START-UP AND TROUBLESHOOTING ........... 16-20
Check for Refrigerant Leaks ........................ 16
Unit Start-Up ................................... 16
LED Description ............................... 16
Control Start-Up ............................... 16
ECM Motor Troubleshooting ..................... 17
Verify Motor Winding Section .................... 17
Motor Turns Slowly ............................ 17
Sequence of Operation ............................ 17
Gas Heat Mode and Adjustments .................. 17
Check Gas Input ............................... 17
Adjust Gas Input ............................... 18
Check Burner Flanm ............................ 18
Airflow and Temperature Rise ..................... 18
Limit Switches ................................ 19
Rollout Switch ................................ 19
Cooling Mode ................................. 19
Checking and Adjusting Refrigerant Charge .......... 19
A05307
Fig. 1 - Unit 48CE
Dehumidification Mode ......................... 19
Continuous Fan Mode ........................... 20
Component Test ............................... 20
Unit Troubleshooting ............................. 20
Indoor Airflow and Airflow Adjustments .............. 21
MAINTENANCE ............................... 24-26
Air Filter ....................................... 24
Indoor Blower and Motor .......................... 24
Outdoor Coil, Indoor Coil. & Condensate Drain Pan ..... 24
Outdoor Fan .................................... 24
Electrical Controls and Wiring ...................... 25
Refrigerant Circuit ................................ 25
Indoor Airflow .................................. 25
Metering Devices-TXV & AccuRater ' Piston ......... 25
Pressure Switches ................................ 25
Loss-of-Charge Switch ........................... 25
High Pressure Switch ............................. 25
Copeland Scroll Compressors (Puron Refrigerant) ....... 25
Refrigerant System ............................... 25
Refrigerant ................................... 25
Compressor Oil ................................ 25
Servicing Systems on Roofs with Synthetic Materials ... 26
Liquid Line Filter Drier .......................... 26
Puron (R-410A) Refrigerant Charging .............. 26
TROUBLESHOOTING ............................. 26
START-UP CHECKLIST ........................... 26
SAFETY CONSIDERATIONS
Installation and servicing of this equipment can be hazardous due to
mechanical and electrical components. Only trained and qualified
personnel should install, repair, or service this equipment.