Contents
2
CONTENTS
1.0 IMPORTANT SAFETY INFORMATION ........................................................... 3
2.0 GENERAL INFORMATION ............................................................................. 4
2.1 Introduction ..............................................................................................4
2.2 Agency Performance Audit Testing Notice ................................................ 4
2.3 Importance of Quality Installation ............................................................. 4
2.4 System Sizing and Selection .................................................................... 4
2.5 Importance of Proper Indoor/Outdoor Match-Ups ..................................... 5
2.6 Checking Product Received ...................................................................... 5
2.7 Compressor Break-In Notice .................................................................. 5
2.8 General .................................................................................................... 5
3.0 UNIT SPECIFICATIONS ................................................................................. 6
3.1 Model Number Nomenclature and Available Models ................................. 6
3.2 Electrical and Physical Data ..................................................................... 7
4.0 INSTALLATION ............................................................................................. 8
4.1 Tools and Refrigerant ................................................................................ 8
4.1.1 Tools Required for Installing and Servicing R-410A Models .............. 8
4.1.2 Specications of R-410A .................................................................. 8
4.1.3 Quick-Reference Guide for R-410A ................................................... 8
4.2 Choosing a Location ................................................................................. 9
4.2.1 Allowable Clearances ....................................................................... 9
4.2.2 Operational Issues Related to Unit Location ................................... 10
4.2.3 Corrosive Environment ................................................................... 10
4.2.4 Customer Satisfaction Issues ......................................................... 10
4.3 Unit Mounting ......................................................................................... 11
4.3.1 Unit Mounting Methods .................................................................. 11
4.3.2 High Wind and Seismic Tie-Down Methods .................................... 11
4.3.3 Elevating Unit ................................................................................. 11
4.4. Refrigerant Line Set Systems ................................................................ 12
4.4.1 Replacing Existing Systems ............................................................ 12
4.4.2 Line Set Application Considerations ............................................... 12
4.4.2.1 Oil Return to Compressor ..........................................................12
4.4.2.2 Refrigerant Migration During Off Cycle .................................... 12
4.4.2.3 Maximum Liquid Pressure Drop ............................................... 12
4.4.2.4 Liquid Line Refrigerant Flashing ............................................... 12
4.4.2.5 Capacity Losses ....................................................................... 13
4.4.3 Line Set Length and Fitting Losses ................................................ 13
4.4.4 Liquid Line Selection ...................................................................... 14
4.4.5 Vapor Line Selection....................................................................... 14
4.5 Line Set Installation ................................................................................ 17
4.5.1 Important Tubing Installation Practices .......................................... 17
4.5.2 Relative Location of Indoor and Outdoor Units ............................... 18
4.5.2.1 Outdoor Unit Level or Near Level to Indoor Coil Line Set .......... 18
4.5.2.2 Outdoor Unit Below Indoor Coil (Long Line Set Applications) ... 19
4.5.2.3 Outdoor Unit Above Indoor Coil ................................................ 20
4.5.3 Tubing Connections ........................................................................21
4.6 Initial Leak Testing ................................................................................22
4.7 Evacuation .............................................................................................22
4.8 Final Leak Testing .................................................................................. 23
4.9 Control Wiring ........................................................................................ 23
4.9.1 For Installations with existing single stage indoor coil and furnace or
air handler ......................................................................................23
4.9.2 Conventional 24VAC Thermostat Control Wiring Connections ........ 25
4.9.3 EcoNet
™
Communications .............................................................. 25
4.9.4 EcoNet
™
Control Center Installation ...............................................25
4.9.5 EcoNet
™
Communication Wiring Connections ................................ 26
4.9.6 For Installation With Only 2 Thermostat Wires Between The Indoor
and Outdoor Unit ............................................................................ 26
4.10 Power Wiring ........................................................................................ 27
4.11 Grounding...............................................................................................27
5.0 SYSTEM START-UP AND REFRIGERANT CHARGING ................................ 28
5.1 System Start-Up Overview ..................................................................... 28
5.2 Initial Power-Up ...................................................................................... 28
and EcoNet
™
Communication Verification.....................................................28
5.3 EcoNet
™
Control Center Set-Up ..............................................................28
5.4 Initial System Start-Up ........................................................................... 28
5.5 Entering Charge Mode Using EcoNet
™
Control Center Service Menu......29
5.6 Entering Charge Mode When Using a Universal Outdoor Control ............ 29
5.7 Indoor Air-Flow Verification ................................................................... 30
5.8 Refrigerant Charging ..............................................................................30
5.8.1 Measurement Device Set-Up .......................................................... 31
5.8.2 Preliminary Charging by Weight ..................................................... 31
5.8.3 Preliminary Charging by Pressures (Optional) ................................ 31
5.8.4 Final Charging by Liquid Subcooling ............................................... 32
5.9 Completing Installation ......................................................................... 32
6.0 NORMAL SEQUENCE OF OPERATION ........................................................33
6.1 Cooling Mode .......................................................................................... 33
6.2 On-Demand Cooling Dehumidification ....................................................33
6.3 Low Ambient Cooling Mode .................................................................... 33
6.4 Supplemental Electric
Heat in Heating Mode ............................................. 33
6.5 Dual Fuel Applications
– Heating Mode ...................................................... 34
6.6 Demand Defrost .....................................................................................34
7.0 COMPONENTS & CONTROLS ..................................................................... 35
7.1 EcoNet
™
Universal Outdoor Control (UODC) ............................................35
7.1.1 Board Features and Connections ...................................................35
7.1.2 Factory Superheat Setting................................................................35
7.2 Power Inverter Compressor Control ........................................................ 36
8.0 ACTIVE SYSTEM PROTECTION FEATURES ................................................37
8.1 Minimum Run Timer ............................................................................... 37
8.2 Oil Return Cycle ...................................................................................... 37
8.3 Low Suction Pressure
/Loss of Charge ....................................................... 37
8.4 Compressor Shut-Down Sequence for High or Low Refrigerant Pressure Fault ... 37
8.5 Overcurrent and Current Imbalance ........................................................38
8.6 Compressor Operation Outside Envelope ............................................... 38
8.7 Over and Under Voltage .......................................................................... 38
8.8 Inverter Over Temperature ...................................................................... 38
8.9 Controls and Communication Malfunction ..............................................38
8.10 Sensor Failure Default Operation ..........................................................39
8.11 Exiting Active Protection Lock-Out Mode .............................................. 39
9.0 DIAGNOSTICS & TROUBLESHOOTING ....................................................... 40
9.1 Checking Transducers & Temperature Sensors ...................................... 42
9.2 General Troubleshooting Guide ...............................................................44
9.3 Service Analyzer Charts .........................................................................45
9.4 Troubleshooting Tips................................................................................50
10.0 OUTDOOR UNIT MAINTENANCE ..............................................................51
10.1 Outdoor Coil Cleaning ........................................................................... 51
10.2 Cabinet Cleaning and Care ................................................................... 51
10.3 Motor Lubrication ................................................................................. 51
10.4 Replacement Parts ............................................................................... 51
11.0 WIRING DIAGRAM .................................................................................... 52
12.0 APPENDIX ................................................................................................54
12.1 Agency Performance Audit Test Instructions......................................... 54
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