1.3.11 460 Volt Cable

Various power cable and plug designs are available for the main 460 volt supply. The plug options tailor the cables to each customers requirements.

1.3.12 Cable Restraint

Various designs are available for storage of the power cables. These options are variations of the compressor section front cover.

1.3.13 Upper Air (Fresh Air Make Up)

The unit may be fitted with an upper fresh air makeup assembly. These assemblies are supplied in two designs, the standard design and the micro design. The openings may also be fitted with screens.

1.3.14 Evaporator

The unit is fitted with an evaporator coil and a hermetic thermal expansion valve.

1.3.15 Evaporator Fan Operation

The units are fitted with Normal Evaporator Fan Operation, opening of an evaporator fan internal protector will shut down the unit.

1.3.16 Labels

Operating Instruction and Function Code listing labels will differ depending on the options installed. For

example, additional operating instructions are required to describe start-up of a unit equipped with an autotransformer. Where the labels are available with additional languages, they are listed in the parts list.

1.3.17 Plate Set

Each unit is equipped with a tethered set of wiring schematic and wiring diagram plates.

The plate sets are ordered using a seven digit base part number and a two digit dash number. (See Unit Matrix

Manual, T-300)

1.3.18 Controller

Replacement controllers may be ordered as a universal un-configured controller (without configuration software) or configured.

1.3.19 Stepper Drive

All the units covered by this manual have suction modulating valves which act to control system capacity. Units indicated as being fitted with “stepper drive” have digital control motors fitted to the suction modulating valve to open and close the valve in steps as required.

1.3.20 Condenser Grille

Two styles of condenser grilles are available, direct bolted grilles and hinged grilles.

T-309

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Carrier 69NT20-531-300 manual Manual, T-300
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69NT20-531-300 specifications

The Carrier 69NT20-531-300 is a cutting-edge rooftop unit designed to meet the demanding requirements of commercial heating and cooling applications. This model embodies Carrier’s commitment to energy efficiency, reliability, and advanced technological features that enhance indoor comfort while minimizing operational costs.

One of the standout features of the Carrier 69NT20-531-300 is its high energy efficiency. It is equipped with advanced compressor technology that optimizes performance while reducing energy consumption. This ensures that businesses can maintain a comfortable indoor climate without incurring exorbitant utility bills. With a high Seasonal Energy Efficiency Ratio (SEER) and Energy Efficiency Ratio (EER), users can expect not only enhanced comfort but also significant cost savings over time.

The cooling capabilities of the 69NT20-531-300 are complemented by its robust heating options. This unit utilizes a gas heat exchanger, ensuring quick and even heating throughout the space. The combination of cooling and heating capabilities in one compact unit makes it a versatile choice for various applications, including retail spaces, offices, and warehouses.

In addition to its impressive performance specifications, the Carrier 69NT20-531-300 incorporates innovative technologies that further enhance its functionality. The unit comes with advanced controls, allowing for precise temperature regulation and zoning capabilities. This ensures that different areas of a building can maintain their desired temperatures based on usage, improving overall energy efficiency.

Durability is another hallmark of the Carrier 69NT20-531-300. The unit is constructed with high-quality materials and features a weather-proof cabinet that protects it from the elements, ensuring long-term reliability even in harsh conditions. Furthermore, its modular design simplifies maintenance, making it easy for technicians to access critical components.

The 69NT20-531-300 is also designed with low noise operation in mind. It employs sound-dampening technology to ensure that operations are quiet, making it an ideal choice for locations where noise reduction is a priority, such as schools or healthcare facilities.

Overall, the Carrier 69NT20-531-300 stands out as a premier choice for businesses looking for an efficient, reliable, and feature-rich rooftop HVAC unit. Its blend of energy efficiency, advanced technology, and durability positions it as a leader in commercial heating and cooling solutions, making it a valuable investment for any commercial property.
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