Contents
Important
Safety Information ............................................. 3
Efficiency Testing Notice ..............................................3
General Information ........................................4-7
Checking Product Received .........................................4
Application ....................................................................4
Electrical and Physical Data ......................................4-5
Specifications ...............................................................7
Proper Installation ........................................................7
Installation .................................................... 8-26
Choosing a Location ......................................8-10
Operational Issues .......................................................8
Corrosive Environment .................................................8
For Units With
Space Limitations .........................................................9
Customer Satisfaction Issues .......................................9
Unit Mounting ...............................................................9
Elevation of Unit ...........................................................9
Factory-Preferred
Tie-Down Method .........................................................9
Snow Depth Table ......................................................10
Tools and Refrigerant .......................................11
Tools Required for Installing and
Servicing R-410A Models ........................................... 11
Specifications of R-410A ............................................ 11
Quick-Reference
Guide for R-410A........................................................ 11
Replacement Units ...........................................12
Indoor Coil ........................................................12
Location ......................................................................12
Interconnecting Tubing ................................ 12-26
Refrigerant Level Adjustment .....................................12
Interconnecting Tubing and
Fitting Losses .............................................................13
Liquid Line Selection .............................................13-14
Long Line Set Applications .........................................14
Oil Level Adjustments .................................................14
Suction Line Selection ................................................15
Refrigerant Migration ..................................................15
Tubing Installation ......................................................20
Tubing Connections ....................................................21
Leak Testing ...............................................................22
Wiring .........................................................23-24
Control Wiring .............................................................23
Typical Thermostat Wiring Diagrams .........................23
Power Wiring ..............................................................24
Grounding ...................................................................24
Start-Up ..................................................... 25-26
Start-Up ..................................................................... 25
Checking Airflow ........................................................ 25
Evacuation Procedure .............................................. 26
Final Leak Testing .......................... ...........................26
Checking
Refrigerant Charge ..................................... 27-29
Charging Units
With R-410A Refrigerant ........................................... 27
Confirm ID Airflow
and Coils Are Clean .................................................. 27
Measurement Device Setup ...................................... 27
Charging by Weight ................................................... 27
Gross Charging by Pressures ................................... 28
Final Charge by Subcooling ...................................... 28
Finishing Up Installation ............................................ 29
Components and Controls ...............................30
Hard-Start Components ................................... 30
High- and Low-Pressure
Controls (HPC and LPC) ................................... 31
Demand Defrost Control ............................ 31-32
Accessories .....................................................33
Time Delay Control (TDC) ......................................... 33
Remote Outdoor
Temperature Model ................................................... 33
Heat Pump Thermostat
Warning Light Kit ....................................................... 33
Low Ambient Control (LAC) ....................................... 33
Diagnostics ................................................ 34-43
Cooling Mechanical
Checks Flowchart ...................................................... 34
Heating Mechanical
Checks Flowchart ...................................................... 35
Defrost Mechanical
Checks Flowchart ...................................................... 36
General Troubleshooting Chart ...... ...........................37
Service Analyzer Charts ....................................... 38-42
Cooling/Heating Tips ............................................................. 43
Wiring Diagrams ........................................ 44-47
2
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