Comfort-Aire TGRG Series for R-410A - Manual (Page 2)

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TABLE 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
V. Unit Dimensions ....................................................................................................8
VI. Installation ...........................................................................................................10
A. General ...........................................................................................................10
1. Pre-Installation Check ................................................................................10
2. Location Considerations.............................................................................10
B. Outside Installation..........................................................................................10
C. Attaching Exhaust and Combustion Air Inlet Hoods .......................................11
D. Cover Panel Installation/Conversion Procedure .............................................12
1. Horizontal to Downflow ...............................................................................12
2. Downflow to Horizontal ...............................................................................12
E. Clearances ......................................................................................................12
F. Rooftop Installation .........................................................................................14
G. Ductwork .........................................................................................................14
H. Return Air ........................................................................................................16
I
. Filters ..............................................................................................................17
VII. Gas Supply, Condensate Drain and Piping .........................................................19
A. Gas Connection ..............................................................................................19
B. LP Conversion.................................................................................................20
C. NOx Models ....................................................................................................21
D. Adjusting or Checking Furnace Input ..............................................................21
E. Condensate Drain ...........................................................................................22
VIII. Wiring ..................................................................................................................22
A. Power Supply ..................................................................................................22
B. Hook Up ..........................................................................................................24
C. Internal Wiring .................................................................................................24
D. Thermostat ......................................................................................................24
IX. Furnace Section Controls and Ignition System ...................................................25
A. Normal Furnace Operating Sequence ............................................................25
B. Operating Instructions .....................................................................................26
C. Burners............................................................................................................27
D. Manual Reset Overtemperature Control .........................................................27
E. Pressure Switch ..............................................................................................27
F. Limit Control ....................................................................................................27
X. System Operating Information.............................................................................27
A. Advise the Customer .......................................................................................27
B. Furnace Section Maintenance ........................................................................28
C. Lubrication.......................................................................................................29
D. Cooling Section Maintenance .........................................................................29
E. Replacement Parts..........................................................................................30
F. Charging..........................................................................................................30
G. Blower Motor Speed Adjustments ...................................................................30
XI. General Data ..................................................................................................33-38
XII. Miscellaneous.................................................................................................39-42
XIII. Airflow Performance Data ..............................................................................43-46
XIV. Wiring Diagrams.............................................................................................47-51
XV. Charge Charts ................................................................................................52-59
XVI. Troubleshooting..............................................................................................60-61