Liebert ITR Electrical field connections, prop fan condensing module, SL-11081 PG 8A

Page 53

Split System Models

Figure 22 Electrical field connections, prop fan condensing module

TOP AIR

DISCHARGE MODELS

(23 & 33kW High Ambient

Field-supplied unitand 23 & 33kW Quiet-Line) disconnect switch

HORIZONTAL AIR DISCHARGE MODELS

Field-supplied 24V NEC

Class 2 wiring to

evaporator module

Single- or 3-phase

electric

SL-11081 PG 8A

 

service;

 

 

not by Liebert

 

Single- or

 

Field-supplied 24V

 

3-phase

 

NEC Class 2 wiring

electric

 

to evaporator

service; not

 

module

by Liebert

Electric service connection to contactor or terminal block

Single- or 3-phase electric service; not by Liebert

High voltage electric power supply entrance

Low voltage electric power supply entrance

Earth ground connection terminal for field wiring.

SL-11081 PG 8

NOTE: Refer to specification sheet for full load amp

 

and wire size amp ratings.

Factory-wired

to components on electric panel.

Heat rejection connection. Field- supplied 24V NEC class 2 wiring.

Wire connections from evaporator module:

1.24V GND

2.24V Supply

3 High Pressure Alarm

4.Hot Gas Bypass Connection (only on units with hot gas bypass. If no hot gas bypass, connection is provided in the evaporator module. Connect wire 4 with wire 2 to the 24V supply).

47

Image 53
Contents Liebert Challenger ITR Page Table of Contents R407C Refrigerant Chilled Water ModelsSplit System Models Figures Tables System Descriptions Room Preparation Remote Sensor Installation LocationEquipment Inspection Location ConsiderationsHandling With Skid Unit shipping weightsRemoval of Skid Domestic Export Model Lb kg 50Hz Models 60Hz ModelsUnit Weight Cabinet dimensionsSL-11897 Piping connection size Piping ConsiderationsDrain Line Piping Outlet Locations Piping connections for split system fan coil units Piping connections for water/glycol and Glycool units Piping connections for chilled water self-contained units Electrical connections Electrical ConnectionsDucted Applications Plenum InstallationBalancing the Air Distribution Checklist for Completed Installation Line Voltage Condenser LocationLow Voltage Lee-Temp/Flood Back Head Pressure Control CondensersAir-cooled condenser statistics Recommended line sizes OD copper inches Refrigerant Piping23 & 33 kW 067A 065A Equivalent Length Hot Gas Line Liquid LineMaterials Supplied Fan Speed Control SystemsEquivalent lengths feet for various pipe fittings Condenser refrigerant per serial tagDehydration/Leak Test Single Circuit Shown Lee-Temp/Flood Back Head Pressure Control Systems Refrigerant control settings psi kPaCharging PipingMaterials Supplied Low Pressure Cut Out High Pressure Cut Out 360 Single Circuit Shown Condenser Water-cooled general arrangement Testing Valve Function Water Regulating Valve AdjustmentWater Regulating Valve Water Regulating Valve Manual FlushingPump and Drycooler Drycooler InstallationDrycooler Location Glycol Piping Room dew point temperaturesExpansion Tanks, Fluid Relief Valves and Other Devices Dry Bulb Wet Bulb Relative Dew Point HumidityVolume in standard Type L copper piping Indoor unit glycol volume approximate gallons liters maxFilling Instructions Preparing the System for Filling@ 50F 10C Glycol SolutionsEthylene glycol concentrations Filling the System 43-9/16 110 5mm For expansion tank dimensions, see onSee Note 30-1/4 483mm 43-3/16 1097mmDrycooler data Mounting hole dimensional dataGlycol pump data Pump Pump Suction Pump Discharge ConnectionGlycol general arrangement Glycool general arrangement Glycol Regulating Valve Glycol Regulating Valve AdjustmentChilled Water Models Water/Glycol-Cooled Condensing Units Air-Cooled Condensing UnitsRefrigerant Loop Line coupling sizes Unit refrigerant chargeRecommended refrigerant lines R22 or R407C sizes OD copper Evaporator Condensing Unit EvaporatorQuick Connect Fittings Outdoor Air-Cooled Condensing Units Unit Dimensions See TablePFH067A-L See Table Outdoor air-cooled condensing unit-top air discharge models152 Piping and electrical connections top air discharge36-1/4 38-1/2 SL-11081 PG 8A Electrical field connections, prop fan condensing moduleModel Net Weight 60 Hz 50 Hz Lb kg MC65A MC64A Installing the Indoor Condensing UnitCentrifugal Air-Cooled Condensing Units Indoor centrifugal condensing unitAirflow CFM CMH DuctingCentrifugal air-cooled condensing unit dimensional data AIR Cooled Water Cooled Water and Glycol-Cooled Condensing Units Regulating Valve Adjustment and TestingPiping Considerations Condenser Water RequirementsWater/glycol-cooled condensing unit dimensions WATER/GLYCOL R407C Refrigerant Temperature Gauge Pressure Psig KPaExample Temperature Pressure Gauge Psig KPaCalculating Subcooling Iti Ne tTi n That

ITR specifications

The Liebert ITR is an advanced precision cooling unit designed to maintain optimal temperature and humidity levels in mission-critical environments. Engineered for high-performance applications, it is particularly suitable for data centers, telecommunications facilities, and other spaces that require precise climate control to ensure uninterrupted operation of sensitive equipment.

One of the main features of the Liebert ITR is its modular design. This allows for scalability and flexibility, enabling users to customize the system based on their specific cooling needs. The unit can be configured in various sizes and cooling capacities, making it suitable for both small server rooms and large data centers. This adaptability is crucial for organizations that anticipate growth and require an efficient cooling solution that can evolve with their infrastructure.

The Liebert ITR incorporates state-of-the-art technologies to enhance performance and energy efficiency. Among these technologies is the use of a variable speed compressor that adjusts its speed based on the cooling load. This capability not only improves energy efficiency but also significantly reduces operational costs by minimizing electricity consumption when cooling demands fluctuate.

Additionally, the unit features advanced control systems that provide intelligent monitoring and management of temperature and humidity levels. These systems can integrate seamlessly with building management systems (BMS) and can be operated remotely, providing users with real-time insights into the performance of the cooling system. Such connectivity ensures quick identification and resolution of potential issues, thereby reducing downtime and maintaining optimal conditions for critical equipment.

The Liebert ITR utilizes eco-friendly refrigerants, contributing to reduced environmental impact while ensuring compliance with regulatory standards. The unit's design also emphasizes reliability, featuring robust construction and redundant components that enhance longevity and minimize the likelihood of failures.

Furthermore, the Liebert ITR is equipped with advanced filtration systems that maintain air quality by reducing particulate matter and contaminants, ensuring that the atmosphere within data centers is not only cool but also clean—critical for the longevity of sensitive electronic equipment.

Overall, the Liebert ITR is characterized by its innovative design, energy-efficient operation, and comprehensive control capabilities, making it an ideal choice for businesses looking to safeguard their critical infrastructure from overheating and humidity. As climate control becomes increasingly important in the digital age, the Liebert ITR stands out as a reliable solution for maintaining optimal environmental conditions.