Nordyne CSH4BE User Manual

Outdoor Heat Pump
14 SEER R-410A High Effi ciency Split System
User’s Information/Installation Instructions
These units have been designed and tested for capacity and effi ciency in accordance with A.R.I.
Standards. Split System Heat Pump units are designed for use with a wide variety of fossil fuel
furnaces, electric furnaces, air handlers, and evaporator coil combinations.
These instructions are primarily intended to assist qualifi ed individuals experienced in the proper
installation of heating and/or air conditioning appliances. Some local codes require licensed instal-
lation/service personnel for this type of equipment. Read all instructions carefully before starting
the installation.
IMPORTANT
Read this owner information to become familiar with the capabilities and use of your appliance.
Keep this with literature on other appliances where you have easy access to it in the future. If a
problem occurs, check the instructions and follow recommendations given. If these suggestions
don’t eliminate your problem, call your servicing contractor.
Heat Pump Principle of Operation
USER’S INFORMATION
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6
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6
SUMMER COOLING
1. Indoor air enters the air handler section.
2. Cold, heat-transfer section (indoor coil)
extracts heat from indoor air as refrigerant
evaporates from a liquid to a cold gas.
3. Refrigerant, drawn to heat pump and
compressed to a hot gas by heat pump,
carries the heat outdoors.
4. Hot, heat-transfer section (outdoor coil)
releases the heat as refrigerant condenses
from a gas to a liquid.
5. Heat pump (outdoor fan) discharges the
heat to outside air.
6. Refrigerant returns to indoor coil and
evaporates once again to absorb more
heat.
WINTER HEATING
1. Outdoor air enters heat pump.
2. Cold, heat-transfer section (outdoor coil)
extracts heat from outdoor air as refrigerant
evaporates from a liquid to a gas.
3. Refrigerant, compressed to a hot gas by
heat pump, carries the heat to the hot heat-
transfer section (indoor coil).
4. Hot, heat-transfer section (indoor coil)
releases the heat to indoor air as refrigerant
condenses from a gas to a liquid.
5. Air handler circulates the heat throughout
the home.
6. Refrigerant returns to outdoor coil and
evaporates once again to absorb more
heat.

Nordyne CSH4BE Specifications

General

SEER	Up to 14
Voltage	208/230V
Phase	1
Refrigerant	R-410A
Cooling Capacity	48000 BTU/h
Tonnage	4 Ton

Summary

Heat Pump Maintenance

Regular Maintenance Tasks

Covers cleaning filters, clearing outdoor unit debris, and checking for obstructions.

Safety Considerations

System Pressure and Handling

Highlights system pressures and safe handling of refrigerant and equipment.

Label and Precaution Compliance

Emphasizes following instructions on labels, tags, and precautions.

Brazing Operation Safety

Details safety requirements and equipment for brazing operations.

Site Preparation for Installation

Equipment Unpacking and Inspection

Steps for unpacking equipment and inspecting for damage.

Outdoor Unit Location Selection

Guidelines for choosing an optimal location for the outdoor unit.

Facility Power Requirements

Outdoor Unit Installation Methods

Slab Mount Installation

Cantilever Mount Installation

Roof Mount Installation

Refrigerant Tubing Connections

General Tubing Practices

Filter Dryer Installation

Electrical Connections and Wiring

Power Connection Warning

Critical safety warning to turn off power before wiring.

Wiring Diagram Reference

Outdoor Unit Power and Control

Control Circuit Wiring Standards

Electrical Power Wiring Standards

Compliance with NEC and local codes for electrical power wiring.

System Startup and Checkout

Pre-Operation Checks

Ensuring air filters are clean and thermostat is set correctly before startup.

Power Application and Initial Inspection

Procedures for safely applying power and inspecting wiring.

Functional Checkout Procedure

Steps to verify system operation, including indoor blower and safety switches.

Troubleshooting and Diagnostics

Interpreting Diagnostic LEDs

Guides on understanding the meaning of LED flashes for troubleshooting.

Cooling Mode Checkout

System Operational Checks

Heating Mode Checkout

Defrost Control Board Operation

Defrost Board Testing Procedures

Module Wiring Troubleshooting

Miswired Module Indications

Troubleshooting common wiring errors for the diagnostic module.

Module LED Status and Actions

Detailed interpretation of LED status and corresponding troubleshooting actions.

Defrost Control Board Procedures

Defrost Speed-Up and Testing

Normal Defrost Operation Testing

Defrost System Procedures

Defrost Test Procedure

Refrigerant Charge Adjustment

Safety Warning for Charge Adjustment

Critical safety warning regarding refrigerant handling by qualified personnel.