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Nordyne R4GD Series User Manual

Nordyne R4GD Series
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Installation Instructions
Single Package Gas Heating/Electric Cooling
Do not store or use gasoline
or other flammable vapors
and liquids in the vicinity of
this or any other appliance.
DO NOT DESTROY. PLEASE READ CAREFULLY AND KEEP IN A SAFE PLACE FOR FUTURE REFERENCE.
WARNING:
Improper installation, ad-
justment, alteration, ser-
vice, or maintenance can
cause injury or property
damage. Refer to this man-
ual. For assistance or addi-
tional information consult a
qualified installer, service
agency, or the gas suppli-
er.
These instructions are primarily intended to assist qualified individuals experienced in the proper installation of this
appliance. Some local codes require licensed installation/service personnel for this type of equipment. Read all
instructions carefully before starting the installation.
FOR YOUR SAFETY
WHAT TO DO IF YOU SMELL GAS
Do not try to light any
appliance.
Do not touch any electrical
switch; do not use any phone
in your building.
Immediately call your gas
supplier from a neighbor's
phone. Follow the gas
supplier's instructions.
If you cannot reach your gas
supplier, call the fire
department.
Extinguish any open flame.
High Efficiency
FOR YOUR SAFETY
!

Table of Contents

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Nordyne R4GD Series Specifications

General IconGeneral
SeriesR4GD
Refrigerant TypeR-410A
Voltage208/230V
Phase1
TypeAir Conditioner
Maximum Overcurrent ProtectionVaries by model
Minimum Circuit AmpacityVaries by model
Operating Temperature Range (Cooling)55°F
Dimensions (Outdoor Unit)Varies by model
Weight (Outdoor Unit)Varies by model

Summary

GENERAL SPECIFICATIONS

Equipment Check

Inspect unit for damage after unpacking and file claims with carrier.

Requirements and Codes

Installer must comply with all local codes and national standards for installation.

Unit Location

Choose outdoor location for unit to minimize duct length and ensure service access.

Venting Requirements

Unit has integral venting system and must be vented outdoors.

SAFETY CONSIDERATIONS

Literature, Labels, and Tags

Follow precautions in literature, on tags, and on labels provided with the unit.

Pressures Within The System

Unit contains high pressure refrigerant; service by qualified personnel only.

INSTALLATION REQUIREMENTS

Equipment Application

Verify unit model is correct for job; not for temporary heating.

DIMENSIONS

Clearances to Combustible Materials

Thermostat

Air Filter Requirements

UNIT INSTALLATION

Ground Level

Install on a level concrete pad at least 2" above grade in a well-draining area.

Rigging and Hoisting

Use adequate lifting equipment and spreader bars; keep unit upright.

Rooftop

Use appropriate accessory roof curb and follow instructions; ensure roof can handle weight.

AIR SUPPLY FOR COMBUSTION AND VENTILATION

CIRCULATING AIR SUPPLY

GAS SUPPLY AND PIPING

Horizontal to Down Flow Conversion

Steps to convert unit from horizontal to downflow duct connections.

GAS AND HIGH ALTITUDE CONVERSIONS

High Altitude Application

Field adjustment of manifold pressure and orifice changes for high altitudes.

Natural Gas High Altitude Conversion

Adjust manifold pressure for altitudes between 5000-10000 ft.

LP/Propane Gas Conversion

Convert unit to LP/Propane gas using approved kits and following specific instructions.

ELECTRICAL WIRING

General

Electrical wiring must comply with NEC/CSA codes and unit rating plate.

Line Voltage

Verify supply voltage, frequency, phase, and capacity match unit requirements.

Blower Speed

SYSTEM CHECK

Pre-Start Check List

Verify unit is level, airflow is clear, ductwork is sealed, and wiring is secure.

START-UP PROCEDURE

Air Circulation

Check for air delivery at the register(s). Ensure no obstructions.

System Cooling

System Heating

Verifying and Adjusting Firing Rate

Verifying and Adjusting Temperature Rise

OPERATING INSTRUCTIONS

TO TURN OFF GAS TO APPLIANCE

Steps to safely shut off the gas supply to the appliance.

COMPONENT FUNCTIONS

Flame Sensor

Proves flame presence to the ignitor; shuts down unit if no flame is sensed.

Flame Roll-Out Control

Detects flame not drawn into heat exchanger tubes; opens to shut down unit.

Gas Valve

Controls the flow of gas to the burners and regulates manifold pressure.

Pressure Switch

Verifies inducer motor draws combustion gases through the vent system.

Over-Temperature Limit Control

Prevents air temperature from exceeding maximum outlet air temperature.

UNIT MAINTENANCE

Refrigerant Charging

Routine Maintenance

Air Filter

Vent Cover Assembly

Condensate Drain and Outdoor Coil

Cleaning of Heat Exchanger

Motor Lubrication

Blower Compartment

Heat Exchanger and Burner Maintenance

Cleaning of Burners

Operating Sequence

Cooling Mode

Sequence of operation for the unit in cooling mode.

Blower Mode

Sequence of operation for the unit in blower-only mode.

Heating Mode

Sequence of operation for the unit in heating mode.

Unit Fails to Operate

INSTALLATION/PERFORMANCE CHECK LIST

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