D.Unit shall be shipped with firmly attached labels that indicate name of manufacturer, chiller model num- ber, chiller serial number, and refrigerant used.

E.If the unit is to be exported, the manufacturer shall provide sufficient protection against sea water corro- sion, making the unit suitable for shipment in a standard open top ocean shipping container.

F.Chiller and starter shall be stored indoors, protected from construction dirt and moisture. Chiller shall be inspected under shipping tarps, bags, or crates to be sure water has not collected during transit. Protec- tive shipping covers shall be kept in place until machine is ready for installation. The inside of the protective cover shall meet the following criteria:

1.Temperature is between 40 F (4.4 C) and 120 F (48.9 C)

2.Relative humidity is between 10% and 80% non-condensing.

1.04WARRANTY

Warranty shall include parts and labor for one year after start-up or 18 months from shipment, which- ever occurs first. A refrigerant warranty shall be provided for a period of 5 years.

Part 2 — Products

2.01EQUIPMENT

A.General:

Factory-assembled, single piece, liquid chiller shall consist of compressor, motor, VFD, lubrication sys- tem, cooler, condenser, initial oil and refrigerant operating charges, microprocessor control system, and documentation required prior to start-up.

B.Compressor:

1.One variable speed, tri-rotor screw compressor of the high performance type.

2.Compressor and motor shall be hermetically sealed into a common assembly and arranged for easy field servicing.

3.The compressor motor shall be accessible for servicing without removing the compressor base from the chiller. Connections to the com- pressor casing shall use O-rings and gaskets to reduce the occurrence of refrigerant leakage. Connections to the compressor shall be flanged or bolted for easy disassembly.

4.Compressor bearings must have individual design life of 500,000 hours or greater.

5.Compressor shall provide capacity modulation from 100% to 15% capacity without the use of hot gas bypass or mechanical unloaders.

6.Compressor shall be provided with a factory- installed positive pressure lubrication system to deliver oil under pressure to bearings and rotors at all operating conditions. Lubrication system shall include:

a.Oil pump with factory-installed motor con- tactor with overload protection.

b.Oil pressure sensor with differential readout at main control center.

c.Oil pressure regulator.

d.Oil filter with isolation valves to allow filter change without removal of refrigerant charge.

e.Oil sump heater [115 v, 50 or 60 Hz] con- trolled from unit microprocessor.

f.Oil reservoir temperature sensor with main control center digital readout.

g.All wiring to oil pump, oil heater, and con- trols shall be pre-wired in the factory and power shall be applied to check proper operation prior to shipment.

7.Compressor shall be fully field serviceable. Compressors that must be removed and returned to the factory for service shall be unacceptable.

8.Acoustical attenuation shall be provided as required, to achieve a maximum (full load or part load) sound level, measured per AHRI Standard 575 (latest edition).

C.Motor:

1.Compressor motor shall be of the semi- hermetic, liquid refrigerant cooled, squirrel cage, induction type suitable for voltage shown on the equipment schedule.

2.If an open (air cooled) motor is provided, a compressor shaft seal leakage containment system shall be provided:

a.An oil reservoir shall collect oil and refriger- ant that leaks past the seal.

b.A float device shall be provided to open when the reservoir is full, directing the refrigerant/oil mixture back into the com- pressor housing.

c.A refrigerant sensor shall be located next to the open drive seal to detect leaks.

3.Motors shall be suitable for operation in a refrigerant atmosphere and shall be cooled by atomized refrigerant in contact with the motor windings.

4.Motor stator shall be arranged for service or removal with only minor compressor disassem- bly and without removing main refrigerant piping connections.

5.Full load operation of the motor shall not exceed nameplate rating.

6.One motor winding temperature sensor (and on spare) shall be provided.

7.Should the mechanical contractor choose to provide a chiller with an air-cooled motor instead of the specified semi-hermetic motor, the contractor shall install additional cooling

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Carrier 23XRV manual Warranty

23XRV specifications

The Carrier 23XRV is a high-performance commercial rooftop unit designed for versatility and efficiency in various applications. As part of Carrier's commitment to providing superior HVAC solutions, the 23XRV combines advanced technologies with robust construction to meet the demands of modern commercial environments.

One of the standout features of the 23XRV is its superior energy efficiency. The unit is equipped with a variable speed compressor that adjusts the cooling output based on real-time demand. This allows for optimal efficiency even during partial load conditions, significantly reducing energy consumption and operational costs. It boasts a high SEER (Seasonal Energy Efficiency Ratio) and EER (Energy Efficiency Ratio) ratings, making it an environmentally friendly option that helps to lower carbon footprints.

The 23XRV is constructed with a strong focus on durability. Its robust frame and high-quality materials ensure resilience against harsh weather conditions and extend the unit's service life. The design also incorporates sound-attenuating features, minimizing operational noise and making it suitable for noise-sensitive environments like schools and hospitals.

In terms of technology, the Carrier 23XRV utilizes advanced microprocessor controls that enable precise temperature management and system diagnostics. This smart control system provides enhanced functionality, allowing for easy monitoring and configuration through a user-friendly interface. Additionally, the unit is compatible with remote monitoring systems, enabling building managers to track performance and make adjustments as necessary from any location.

The refrigerant used in the 23XRV is R-410A, which is chlorine-free and meets stringent environmental regulations. The choice of refrigerant not only enhances the efficiency of the system but also aligns with global efforts to phase out ozone-depleting substances.

Maintenance and serviceability are also key considerations in the design of the 23XRV. Features such as easy access to components for routine maintenance, modular construction for quicker repairs, and extensive diagnostic capabilities reduce downtime and enhance overall reliability.

Overall, the Carrier 23XRV stands out in the commercial HVAC market with its combination of efficiency, durability, and advanced technology. It is an excellent choice for various commercial applications, providing reliable performance and improved energy management for building owners and operators looking to enhance their HVAC systems.