Table of Contents
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SAFETY PRECAUTIONS ....................................................................... 4
Unit Nomenclature ................................................................................. 8
GENERAL DATA ..................................................................................... 9
Base Rooftop DOAS ............................................................................ 9
Energy Recovery Wheel Rooftop DOAS ............................................11
Refrigerant Safety ................................................................................ 13
Receiving Guidelines .......................................................................... 14
Inspection and Maintenance .............................................................. 15
Subassemblies .................................................................................... 17
Installation ............................................................................................ 19
Outdoor Air Hood Assembly .............................................................. 25
Piping Installation ................................................................................ 32
Electrical Information .......................................................................... 34
Control Center Components .............................................................. 35
Component Operation ......................................................................... 36
Optional Component Operation ......................................................... 37
Factory-Installed Refrigeration System Components ...................... 41
Start Up Unit ......................................................................................... 43
Start Up Checklist ................................................................................ 46
Start Up Components .......................................................................... 47
Optional Energy Wheel ....................................................................... 50
Troubleshooting - Alarms ................................................................... 53
Troubleshooting - Unit ........................................................................ 54
Troubleshooting - Refrigeration Circuit ............................................ 55
Routine Maintenance .......................................................................... 59
Reference - Venting Connection Locations ...................................... 62
AHRI Rating Conditions ...................................................................... 63
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TABLE OF CONTENTS
Indirect Gas Fired Furnaces ............................................................... 64
Typical Furnace, Electrical, and Control Components ....................... 69
Gas Fired Burner Turndown .............................................................. 70
Installation of Venting for Outdoor Units ............................................ 71
Installation of Venting for Indoor Units ............................................... 72
Venting Methods ................................................................................ 73
Standard Indoor Venting Installation .................................................. 74
Concentric Venting Installation .......................................................... 75
Two Pipe Venting Installation - Horizontal ......................................... 78
Two Pipe Venting Installation - Vertical .............................................. 79
Sequence of Operation ...................................................................... 82
Performance Data ............................................................................. 83
Furnace Start Up ............................................................................... 84
Troubleshooting - Ignition Controller .................................................. 87
Troubleshooting - 4:1 Modulating Furnace ........................................ 89
Reference - Controls ......................................................................... 98
Maintenance ...................................................................................... 99
Maintenance Log ............................................................................. 100
CONTROLLER .................................................................................... 102
Overview .......................................................................................... 102
AC Smart Setup ................................................................................114
Sequences of Operation ...................................................................117
Set-Points Data Tables .................................................................... 129
Network Settings Data Tables .......................................................... 136
Alarm Data ....................................................................................... 141
BACnet and MODBUS Points ......................................................... 145
Unit Status Modes ........................................................................... 157
LonTalk Points ................................................................................. 158
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Table of Contents
Troubleshooting
