Carrier 48LC 04 - User Manual

48/50LC 04---06
Single Package Rooftop Units
with ComfortLink Controls Version 1.X
and PURONr (R---410A) Refrigerant
Cont ro ls , St art---Up, Operat io n
and Troubleshooting
IMPORTANT: This literature covers 48/50LC 04--06 models with
ComfortLink Software version 1.x.
TABLE OF CONTENTS
Page
SAFETY CONSIDERATIONS 2.........................
GENERAL 3.........................................
BASIC CONTROL USAGE 3...........................
ComfortLink Control 3................................
Scrolling Marquee 3..................................
Accessory Navigator Display 4..........................
Operation 4.........................................
System Pilott and Touch Pilot Devices 4.................
CCN Tables and Display 4.............................
Conventions Used in This Manual 6......................
START--UP 6.........................................
Unit Preparation 6....................................
Compressor Mounting 6...............................
Refrigerant Service Ports 6.............................
Crankcase Heater 6...................................
Compressor Rotation 6................................
Power Supply 6.....................................
Internal Wiring 6.....................................
Evaporator Fan 6....................................
Condenser Fans and Motors 7...........................
Return--Air Filters 7..................................
Outdoor--Air Inlet Screens 7............................
Accessory Installation 7...............................
Orifice Change (48LC) 7..............................
Gas Heat (48LC) 8...................................
CONTROLS QUICK SET--UP 8.........................
Control Set Point and Confirmation Log 8.................
Thermostat Control 8.................................
Space Temperature Sensor Control -- Direct Wired
(T--55 or T--56 or T--59) 8.............................
T--58 Communicating Room Sensor 8....................
CCN Linkage Control 8...............................
System Pilott -- Communication Space Sensor 8...........
Thermidistat Control 8................................
Space Humidistat Control 9............................
Relative Humidity Sensor Control 9......................
CCN Communication 9...............................
Accessories 9.......................................
Programming Operating Schedules 9.....................
SERVICE TEST 11....................................
Independent Outputs 11...............................
Fan Test 11.........................................
Cooling Test 11.....................................
Heating Test 11......................................
THIRD PARTY CONTROL 11..........................
Cooling/Heating Control 11............................
Dehumidification Control 11...........................
Remote Occupancy 12................................
Fire Shutdown 12....................................
Alarm Output 12.....................................
Economizer Damper Control 12.........................
CONTROLS OPERATION 12...........................
Display Configuration 12..............................
Unit Configuration 12.................................
Modes 13..........................................
General Operation 13.................................
Temperature Setpoint Determination 14...................
Occupancy Determination 14...........................
Indoor Fan Operation 14...............................
Cooling Operation 15.................................
Heating Operation 18.................................
Economizer 19......................................
Air--Side Economizer High Limit Switches Control 22.......
Indoor Air Quality (IAQ) 23............................
Temperature Compensated Start 25.......................
Carrier Comfort Network (CCN)
R
Configuration 25.........
Demand Limit 26....................................
Linkage 26.........................................
Alarm Handling 26...................................
TROUBLESHOOTING 27..............................
Complete Unit Stoppage 27............................
Restart Procedure 27..................................
Alarms and Alerts 27.................................
Control Module Communication 32......................

Carrier 48LC 04 Specifications