Table of Contents
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T BLE OF CONTENTS
I. Safety Information .................................................................................................3
II. Introduction............................................................................................................6
III. Checking Product Received ..................................................................................6
IV. Specifications ........................................................................................................6
A. General .............................................................................................................6
B. Major Components............................................................................................6
C. R-410A Refrigerant ...........................................................................................6
D. Comfort Alert System ........................................................................................7
1. Comfort Alert .................................................................................................7
2. High Pressure Control...................................................................................8
3. Low Pressure Control....................................................................................8
4. Comfort Alert With Active Protection .............................................................8
V. Unit Dimensions ..................................................................................................10
VI. Installation ...........................................................................................................12
A. General ...........................................................................................................12
1. Pre-Installation Check ................................................................................12
2. Location Considerations.............................................................................12
B. Outside Installation..........................................................................................12
C. Attaching Exhaust and Combustion Air Inlet Hoods .......................................13
D. Cover Panel Installation/Conversion Procedure .............................................14
1. Horizontal to Downflow ...............................................................................14
2. Downflow to Horizontal ...............................................................................14
E. Clearances ......................................................................................................14
F. Rooftop Installation .........................................................................................16
G. Ductwork .........................................................................................................16
H. Return Air ........................................................................................................18
. Filters...............................................................................................................19
VII. Gas Supply, Condensate Drain and Piping .........................................................21
A. Gas Connection ..............................................................................................21
B. LP Conversion Two Stage Gas Heat ..............................................................22
C. NOx Models ....................................................................................................22
D. Adjusting or Checking Furnace Input ..............................................................23
E. Condensate Drain ...........................................................................................24
VIII. Wiring ..................................................................................................................24
A. Power Supply ..................................................................................................24
B. Hook Up ..........................................................................................................25
C. Internal Wiring .................................................................................................26
D. Thermostat ......................................................................................................26
IX. Furnace Section Controls and Ignition System ...................................................27
A. Normal Furnace Operating Sequence Two Stage Gas Heat ..........................27
B. Operating Instructions .....................................................................................28
C. Burners............................................................................................................29
D. Manual Reset Overtemperature Control .........................................................29
E. Pressure Switch ..............................................................................................29
F. Limit Control ....................................................................................................29
X. System Operating Information.............................................................................29
A. Advise the Customer.......................................................................................29
B. Furnace Section Maintenance ........................................................................30
C. Lubrication.......................................................................................................31
D. Cooling Section Maintenance .........................................................................31
E. Replacement Parts..........................................................................................32
F. Charging..........................................................................................................32
XI. Units with ECM Blower Motors (RGEA16 Models Only) .....................................33
A. ECM Motor Interface Control and Settings (RGEA16 Units Only) ..................33
B. Transformer Protection ...................................................................................34
C. Using the Onboard LED to Determine Blower CFM........................................34
D. Unit Operation with Two-Stage Cooling ..........................................................35
E. Cooling Airflow Adjustments ...........................................................................35
F. Heating Airflow Adjustments ...........................................................................38
G. Cooling Delay Profiles.....................................................................................38
H. Cooling Mode Dehumidification ......................................................................39
I. On Demand Dehumidification Airflow Adjustment ..........................................39
XII. General Data ..................................................................................................41-44
XIII. Miscellaneous......................................................................................................45
XIV. Airflow Performance Data....................................................................................46
XV. Wiring Diagrams.............................................................................................47-48
XVI. Charge Charts ................................................................................................49-56
XVII. Troubleshooting..............................................................................................57-58
XVIII. Comfort Alert Diagnostic Chart............................................................................59
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