Roof Mount

WARNING:

To avoid the risk of property damage, personal injury, or death, it is the installer’s responsibility to ensure that whatever means are used to move or lift the unit are safe and adequate:

Keep the unit in an upright position at all times.

The method of mounting should be designed so as not to overload roof structures or transmit noise to the interior of the structure. Refrigerant and electrical lines should be routed through suitably waterproofed openings to prevent water leaking into the structure.

CONNECTING REFRIGERANT TUBING

BETWEEN THE INDOOR & OUTDOOR UNIT

CAUTION:

This system uses R-410A refrigerant with POE oil. When servicing, cover or seal openings to minimize the exposure of the refrigerant system to air to prevent accumulation of moisture and other contaminants.

General Information

After outdoor and indoor unit placement has been determined, route refrigerant tubing between the equipment in accordance with sound installation practices.

Whenconnecting refrigerant linesets together, it is recommended that dry nitrogen be flowing through the joints during brazing. This will prevent internal oxidation and scaling from occurring.

Refrigerant tubing should be routed in a manner that minimizes the length of tubing and the number of bends in the tubing.

Refrigerant tubing should be supported in a manner that the tubing will not vibrate or abrade during system operation.

Tubing should be kept clean of foreign debris during installation.

Every effort should be made by the installer to ensure that the fi eld installed refrigerant containing components of the system have been installed in accordance with these instructions and sound installation practices to insure reliable system operation and longevity.

The maximum recommended interconnecting refrigerant line length is 75 feet, and the vertical elevation difference between the indoor and outdoor sections should not exceed 20 feet.

If precise forming of refrigerant lines is required, a copper tubing bender is recommended.Avoid sharp bends and contact of the refrigerant lines with metal surfaces.

Filter Drier Installation

A fi lter dryer is provided with the unit and must be installed in the liquid line of the system. If the installation replaces a system with a fi lter dryer already present in the liquid line, the fi lter dryer must be replaced with the one supplied with the unit. The fi lter dryer must be installed in strict accordance with the manufacturer’s installation instructions.

Optional Equipment

Optional equipment such as liquid line solenoid valves, twinning kit, low ambient, etc., should be installed in strict accordance with the manufacturer’s installation instructions.

ELECTRICAL CONNECTIONS

WARNING:

Shut off all electrical power to the unit before performing any maintenance or service on the system.Failure to comply may result in personal injury or death.

Pre-Electrical Checklist

Verify that the voltage, frequency and phase of the supply source are the same as those specifi ed on the unit rating plate.

Verify that the service provided by the utility is sufficient to handle the additional load imposed by this equipment.

For minimum circuit ampacity and maximum overcurrent protection, see unit rating plate.

Wiring Diagram / Schematic

A wiring diagram/schematic is located on the inside cover of the electrical box of the outdoor unit. The installer should become familiar with the wiring diagram/schematic before making any electrical connections to the outdoor unit.

Line Voltage

Electrical power wiring must comply with the current provisions of the NEC (ANSI/NFPA 70) and with applicable local codes having jurisdiction.

Provide power supply for the unit in accordance with the unit wiring diagram, and the unit rating plate.

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Nordyne R-410A user manual Electrical Connections

R-410A specifications

Nordyne R-410A is a widely recognized refrigerant used in modern air conditioning and heat pump systems, known for its efficiency and environmentally friendly attributes. As a hydrofluorocarbon (HFC) refrigerant, R-410A has become the preferred choice for many manufacturers seeking to meet stringent environmental regulations while providing superior cooling performance.

One of the main features of R-410A is its higher energy efficiency compared to older refrigerants like R-22. This efficiency is primarily attributed to its higher pressure capabilities, which allow for improved heat transfer and reduced energy consumption in residential and commercial systems. As energy costs continue to rise, the use of R-410A in HVAC systems offers a viable solution for reducing utility bills while maintaining optimal comfort levels.

R-410A is also non-ozone-depleting, which sets it apart from many traditional refrigerants. While older refrigerants have been phased out due to their potential harm to the ozone layer, R-410A presents a sustainable alternative that aligns with environmental goals. It features a zero ozone depletion potential (ODP), making it a responsible choice for installations concerned with ecological impact.

In terms of technology, R-410A works effectively in both air conditioning and heat pump systems, providing reliable cooling in hot conditions and heat in colder months. It is compatible with a variety of system designs and can excel in both residential and commercial applications. Moreover, the thermodynamic properties of R-410A ensure consistent and reliable performance, regardless of the external temperature fluctuations.

Another characteristic of R-410A is its ability to operate at lower temperatures, which enhances its versatility. This capability allows for the design of systems that can function efficiently in a wider range of climate conditions. As a result, HVAC technicians and contractors benefit from its reliability and performance, leading to less frequent maintenance and enhanced customer satisfaction.

Lastly, R-410A systems are equipped with advanced components that improve overall functionality. These systems often include variable-speed compressors, which optimize energy use based on cooling demand, and advanced refrigerant management technologies that ensure safe and efficient operation.

In conclusion, Nordyne R-410A stands out as a superior refrigerant due to its energy efficiency, environmental benefits, and adaptability across a range of HVAC applications. As the industry continues to innovate and shift toward sustainable solutions, R-410A remains at the forefront of refrigerant technology, ensuring homeowners and businesses alike enjoy efficient and eco-friendly cooling options.