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TABLE OF CONTENTS
1.0 SAFETY INFORMATION .................................................................................
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2.0 GENERAL INFORMATION .............................................................................
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2.1 Important Information About Efciency & Indoor Air Quality ........................
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2.2 Checking Product Received .........................................................................
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2.3 Model Number Nomenclature ......................................................................
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2.4 Available Models ..........................................................................................
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2.5 Dimensions & Weight ...................................................................................
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2.5.1 DRAH1T Models .......................................................................... 9
2.6 Importance of Proper Indoor/Outdoor Match-Ups ........................................ 10
2.7 Importance Of Quality Installation ................................................................ 10
3.0 INSTALLATION ............................................................................................... 11
3.1 Tools and Refrigerant ................................................................................... 11
3.1.1 Tools Required For Installation and Servicing R-410A Models .............. 11
3.1.2 Specications of R-410A ....................................................................... 11
3.1.3 Quick-Reference Guide for R-410A ....................................................... 11
3.2 Applications and Orientation ........................................................................ 12
3.2.1 Vertical Upow & Horizontal Left Discharge .......................................... 12
3.2.2 Vertical Downow & Horizontal Right Discharge ................................... 12
3.2.3 Installation in an Unconditioned Space ................................................. 14
3.2.4 Installation in Mobile/Manufactured Homes ........................................... 15
3.2.5 Installation in Corrosive Environments .................................................. 16
3.2.6 Supporting Air-Handler in Horizontal Applications ................................. 16
3.3 Auxiliary Overow Pan ................................................................................. 16
3.4 Clearances ................................................................................................... 16
3.5 Duct Flanges ................................................................................................ 17
3.6 Ductwork ...................................................................................................... 17
3.7 Return Air Filter ............................................................................................ 18
3.8 Orice Size ................................................................................................... 18
3.9 Refrigerant Line Connections & Charging ................................................... 18
3.9.1 Preparation ............................................................................................ 18
3.9.2 Liquid Line Filter Drier ........................................................................... 18
3.9.3 Brazing .................................................................................................. 19
3.9.4 Leak Testing .......................................................................................... 19
3.9.5 Evacuation ............................................................................................. 19
3.9.6 Refrigerant Charging ............................................................................. 19
3.10 TXV Sensing Bulb Attachment ................................................................... 19
3.11 Condensate Drain ...................................................................................... 20
3.12 Thermostat ................................................................................................. 21
3.13 Electrical Wiring ......................................................................................... 21
3.13.1 Conguring Unit for 208 Volt Power .................................................... 22
3.13.2 Grounding ............................................................................................ 22
3.13.3 Power Wiring ....................................................................................... 22
3.13.4 Cooper Wire Size - AWG. (3% Voltage Drop) ..................................... 22
3.13.5. Electrical Data - Blower Motor Only - Without Electrical Heat ............ 22
3.13.5.1 DRAH1T ......................................................................................... 22
3.13.6 Electrical Data - With Electric Heat ...................................................... 23
3.13.6.1 DRAH1T ......................................................................................... 26
3.13.7 Electric Heater Kit Supplemental Information ...................................... 27
3.13.8 Control Wiring ...................................................................................... 27
3.13.9 Thermostat & Control Wiring Connections .......................................... 27
3.14 Airow ......................................................................................................... 27