Carrier 23XRV manual

Page 27

input terminals as the point of common cou- pling (PCC).

b. The VFD full load efficiency shall meet or exceed 97% at 100% VFD rated ampacity.

c.Active rectifier shall regulate unity displace- ment power factor to 0.99 or higher.

d.Voltage boost capability to provide full motor voltage at reduced line voltage conditions.

e.The VFD shall feature soft start, linear accel- eration, and coast to stop capabilities.

f.Base motor frequency shall permit motor to be utilized at nameplate voltage. Adjustable frequency range shall permit capacity con- trol down to 15%.

g.The VFD shall have 150% instantaneous torque generation.

7.VFD Electrical Service (single point power):

a.The VFD shall have input circuit breaker with minimum 65,000 amp interrupt capacity.

b.The VFD shall have standard branch oil pump circuit breaker to provide power for chiller oil pump.

c.The VFD shall have standard 3 KVA control power transformer with circuit breaker to provide power for oil heater, VFD controls and chiller controls.

d.The branch oil pump circuit breaker and control power transformer shall be factory- wired.

e.Input power shall be 380/460 vac, ±10%, 3 Phase, 50/60 Hz, ±2% Hz.

8.Discrete Outputs:

115-v discrete contact outputs shall be provided for:

a.Circuit breaker shunt trip

b.Chilled water pump

c.Condenser water pump

d.Alarm status

9.Analog Output:

An analog (4 to 20 mA) output for head pres- sure reference shall be provided. This signal shall be suitable to control a 2-way or 3-way water regulating valve in the condenser piping.

10.Protection (the following shall be supplied):

a.Under-voltage

b.Over voltage

c.Phase loss

d.Phase reversal

e.Ground fault

f.Phase unbalance protection

g.Single cycle voltage loss protection

h.Programmable auto re-start after loss of power

i.Motor overload protection (NEMA Class 10)

j.Motor over temperature protection

11.VFD Testing:

The VFD shall be factory-mounted, factory- wired and factory-tested on the chiller prior to shipment.

E.Evaporator and Condenser:

1.Evaporator and condenser shall be of shell and tube type construction, each in separate shells. Units shall be fabricated with high-performance tubing, steel shell and tube sheets with fabri- cated steel waterboxes. Waterboxes shall be nozzle-in-head type with stub out nozzles having Victaulic grooves to allow for use of Victaulic couplings.

2.Tubing shall be copper, high-efficiency type, with integral internal and external enhance- ment unless otherwise noted. Tubes shall be nominal 3/4-in. OD with nominal wall thickness of 0.025 in. measured at the root of the fin unless otherwise noted. Tubes shall be rolled into tube sheets and shall be individually replaceable. Tube sheet holes shall be double grooved for joint structural integrity. Intermedi- ate support sheet spacing shall not exceed 36 in. (914 mm).

3.Waterboxes and nozzle connections shall be designed for 150 psig (1034 kPa) minimum working pressure unless otherwise noted. Nozzles should have grooves to allow use of Victaulic couplings.

4.The tube sheets of the cooler and condenser shall be bolted together to allow for field disas- sembly and reassembly.

5.The vessel shall display an ASME nameplate that shows the pressure and temperature data and the “U” stamp for ASME Section VIII, Division 1. A re-seating pressure relief valve(s) shall be installed on each heat exchanger. If a non-reseating type is used, a backup reseating type shall be installed in series.

6.Waterboxes shall have vents, drains, and covers to permit tube cleaning within the space shown on the drawings. A thermistor type temperature sensor with quick connects shall be factory- installed in each water nozzle.

7.Cooler shall be designed to prevent liquid refrig- erant from entering the compressor. Devices that introduce pressure losses (such as mist eliminators) shall not be acceptable because they are subject to structural failures that can result in extensive compressor damage.

8.Tubes shall be individually replaceable from either end of the heat exchanger without affect- ing the strength and durability of the tube sheet and without causing leakage in adjacent tubes.

9.The condenser shell shall include a FLASC (Flash Subcooler) which cools the condensed

27

Page 26 Page 28
Image 27
Page 26 Page 28
Contents Features/Benefits Product reliability23XRV Table of contents Microprocessor controls features Heat exchanger featuresA23-1648 Model number nomenclaturePhysical data 23XRV Compressor and Motor WeightsComponent Weights 23XRV Heat Exchanger WeightsPasses Additional Weights for 23XRV Marine WaterboxesNumber FrameOption ACCESSORY† → Options and accessories23XRV Dimensions Marine Waterbox Dimensions23XRV Dimensions 23XRV Dimensions NOZZLE-IN-HEAD WaterboxCooler Pass Performance dataNozzle Size 23XRV Heat Exchanger MIN/MAX Flow RatesElectrical data VFD Frame SizesAuxiliary Ratings Control system FeaturesControls Microprocessor controlsControl Panel Display Front View CCM CCN Communication Wiring for Multiple Chillers TypicalControl Sequence Control sequence23XRV Chiller Typical piping and wiringControl wiring schematic 23XRV Component ArrangementGND Ground 23XRV Dimensions mmApplication data → 23XRV Machine FootprintA23-1647 23XRV Isolation with Accessory Soleplate PackageOut 23XRV Nozzle ArrangementsCooler Waterboxes Condenser Waterboxes23XRV Nozzle Arrangements Relief Valve Arrangements Relief Valve LocationsDesign pressures Vent and drain connectionsRelief valve discharge pipe sizing Asme stampingCondensation VS Relative Humidity → Minimum fluid loop volume23XRV Minimum FIELD-INSTALLED Insulation Requirements InsulationHvac Guide Specifications Guide specificationsWarranty Guide specifications Page Guide specifications Page Guide specifications Page Carrier Corporation Syracuse, New York 910

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.
Top Page Image Contents