Important
Safety Information ............................................. 3
Efficiency Testing Notice ..............................................3
General Information........................................... 4
Checking Product Received ........................................4
Application ...................................................................4
Electrical and Physical Data.........................................5
Specifications...............................................................6
Proper Installation ........................................................6
Installation......................................................... 7
Choosing a Location.......................................... 7
Operational Issues........................................................7
Corrosive Environment.................................................7
For Units With
Space Limitations.........................................................8
Customer Satisfaction Issues ......................................8
Unit Mounting...............................................................8
Factory Preferred
Tie Down Method.........................................................8
Tools and Refrigerant ........................................ 9
Tools Required for Installing and
Servicing R-410A Models ............................................9
Specifications of R-410A .............................................9
Quick-Reference
Guide for R-410A .........................................................9
Replacement Units ...........................................10
Indoor Coil ........................................................10
Location......................................................................10
Interconnecting Tubing.....................................10
Refrigerant Level Adjustment.....................................11
Interconnecting Tubing and Fitting Losses ................11
Liquid Line Selection..................................................11
Long Line Set Applications ........................................12
Oil Level Adjustment ..................................................12
Suction Line Selection ...............................................13
Refrigerant Migration..................................................13
Tubing Installation ......................................................18
Tubing Connections ...................................................19
Leak Testing ...............................................................20
Condensing Units ............................................ 21
Equipped with EcoNet™............................................21
Dual 7-Segment LED .................................................21
Line Voltage Connector..............................................21
Thermostat Connector ...............................................21
Low Volt Fuse.............................................................22
Low Pressure Control.................................................22
High Pressure Control ................................................22
Ambient Temperature Sensor.....................................22
UP and SELECT Buttons ...........................................22
Memory Card .............................................................22
EcoNet Communication System™ Control Wiring ....22
EcoNet Communication System™ ICC Control ........22
Condensing Units ............................................23
Active Compressor Protection Mode...............24
Test and Fault Recall Modes..................................... 25
Conventional Thermostat Wiring .....................30
Thermostat Wiring Diagrams...........................31
ICC Control Operation .....................................32
ICC Control Operation............................................... 32
Test and Fault Recall Modes ...........................34
Electrical Wiring ..............................................35
Power Wiring ............................................................. 35
Grounding.................................................................. 35
Control Wiring..................................................35
Noncommunication Thermostat
Wiring Diagrams........................................................ 36
Power Wiring ............................................................. 37
Grounding.................................................................. 37
Start-Up ........................................................... 38
Checking Airflow ............................................. 38
Evacuation Procedure ............................................... 39
Final Leak Testing.......................................................39
Checking Refrigerant Charge ...........................40
Charging Units............................................................40
Confirm ID Airflow and Coils are Clean .....................40
Measurement Device Setup.......................................40
Charging by Weight....................................................40
Gross Charging by Pressure ......................................41
Final Charge by Subcooling .......................................41
Finishing Up Installation .............................................42
Components and Controls............................... 43
Compressor
Crankcase Heat (CCH) ......................................43
High- and Low-Pressure
Controls (HPC and LPC)................................... 43
Accessories ..................................................... 34
Single Pole Compressor ............................................44
Time-Delay Control ....................................................44
Low Ambient Control (LAC) .......................................44
Hard-Start Components....................................44
Diagnostics ...................................................... 45
Electrical Checks Flowchart.......................................45
Cooling Mechanical Check Flowchart .......................46
General Troubleshooting Chart ..................................47
Service Analyzer Charts ....................................... 48-52
Cooling Troubleshooting Tips ....................................53
Wiring Diagrams ......................................... 54-55
Contents
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