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GENERAL SPECIFICATIONS ..................................... 4

SAFETY CONSIDERATIONS...................................... 4

• Literature, Labels, and Tags.................................. 4

• Pressures Within The System .............................. 4

INSTALLATION REQUIREMENTS .............................. 4

• Equipment Application .......................................... 4

• Equipment Check ................................................. 4

• Requirements and Codes ...................................... 4

• Unit Location ......................................................... 4

• Venting Requirements........................................... 4

• Unit Dimensions ................................................ 5-6

• Clearances to Combustible Materials .................... 7

• Thermostat ........................................................... 7

• Air Filter Requirements ......................................... 7

• Condensate Drain ................................................. 9

UNIT INSTALLATION .................................................. 9

• Ground Level ........................................................ 9

• Rigging and Hoisting ............................................. 9

• Rooftop ................................................................. 9

AIR SUPPLY FOR COMBUSTION

AND VENTILATION .............................................. 10

CIRCULATING AIR SUPPLY ..................................... 10

• Airflow Data ........................................................ 11

• Unconditioned Spaces ........................................ 12

• Acoustical Ductwork ........................................... 12

• Horizontal to Down Flow Conversion ................... 12

GAS SUPPLY AND PIPING ...................................... 12

• Leak Check ........................................................ 13

GAS AND HIGH ALTITUDE CONVERSIONS ............ 13

• High Altitude Application ..................................... 13

• Natural Gas High Altitude Conversion ................. 13

• LP/Propane Gas Conversion ............................... 13

ELECTRICAL WIRING ............................................... 14

• General ............................................................... 14

• Line Voltage ........................................................ 14

• Electrical Data Table .......................................... 15

• Blower Speed ..................................................... 15

• Room Thermostat ............................................... 16

SYSTEM CHECK ..................................................... 16

• Pre-Start Check List .......................................... 16

WIRING DIAGRAMS ................................................ 18

START-UP PROCEDURE......................................... 16

• Air Circulation .................................................... 16

• Short Cycle Protection ....................................... 19

• System Cooling ................................................. 19

• System Heating ................................................. 19

• Verifying and Adjusting Firing Rate .................... 19

• Verifying and Adjusting Temperature Rise ......... 19

• Lighting/Operating Instructions .......................... 20

• Verifying Burner Operation ................................. 21

• Verifying Operation of Over-Temperature

Limit Control ................................................... 21

COMPONENT FUNCTIONS ..................................... 21

• Flame Sensor .................................................... 21

• Flame Roll-Out Control ....................................... 21

• Gas Valve.......................................................... 21

• Pressure Switch ................................................ 21

• Over-Temperature Limit Control ......................... 21

UNIT MAINTENANCE ............................................... 21

• Refrigerant Charging .......................................... 22

• Routine Maintenance ......................................... 22

• Air Filter ............................................................. 22

• Vent Cover Assembly ........................................ 22

• Condensate Drain and Outdoor Coil ................... 22

• Electrical ........................................................... 23

• Motor Lubrication ............................................... 23

• Blower Compartment ......................................... 23

• Heat Exchanger and Burner Maintenance .......... 23

• Cleaning of Heat Exchanger............................... 23

• Cleaning of Burners ........................................... 24

OPERATING SEQUENCE ........................................ 24

• Cooling Mode ..................................................... 24

• Blower Mode ...................................................... 24

• Heating Mode .................................................... 24

• Unit Fails to Operate .......................................... 25

INSTALLATION CHECKLIST................................... 26

TABLE OF CONTENTS

Brand	Nordyne
Model	R4GD Series
Category	Air Conditioner
Language	English

Nordyne R4GD Series User Manual

Table of Contents

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Nordyne R4GD Series Specifications

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