Liebert ITR Unit refrigerant charge, Recommended refrigerant lines R22 or R407C sizes OD copper

Page 46

Split System Models

Once all piping is complete, check for leaks and dehydrate the field piping as follows:

1.Pressurize the field piping to 150 PSIG (1034 kPa) using dry nitrogen with a trace of refrigerant. Check system for leaks with a suitable leak detector.

2.After completion of leak testing, release the test pressure (per local code) and pull a deep vacuum on the field piping with a suitable pump.

3.After 15 minutes, check the pressure readings and, if they have not changed, break vacuum with dry nitrogen. Pull a second vacuum to 250 microns or less. Recheck the pressure after 15 minutes.

Table 19 Unit refrigerant charge

 

R22 Charge

R407C Charge

Model

 

 

lb (kg)

lb (kg)

 

 

 

 

 

060E

0.81

(0.37)

0.8

(0.4)

 

 

 

 

 

059E

0.81

(0.37)

0.8

(0.4)

 

 

 

 

 

MC_65/64A

27.00

(12.25)

26.1

(11.8)

 

 

 

 

 

PF_067A-_L

26.63

(12.08)

25.8

(11.7)

 

 

 

 

 

PF_066A-_L

26.63

(12.08)

25.8

(11.7)

 

 

 

 

 

 

R22 Charge

R407C Charge

Model

 

 

lb (kg)

lb (kg)

 

 

 

 

PF_Z67A-_L

51.69

(23.45)

50.1 (22.7)

 

 

 

 

PF_Z66A-_L

51.69

(23.45)

50.1 (22.7)

 

 

 

 

PF_067A-_H

51.69

(23.45)

50.1 (22.7)

 

 

 

 

PF_066A-_H

51.69

(23.45)

50.1 (22.7)

 

 

 

 

MC_69/68W

5.88

(2.67)

n/a

 

 

 

 

Table 20 Line charges - refrigerant per 100 ft (30 m) of Type “L” copper tube

 

 

 

R22

 

R407C

 

 

 

 

 

 

 

Liquid Line

 

Suction Line

Liquid Line

Suction Line

O.D.

lb (kg)

 

lb (kg)

lb (kg)

lb (kg)

1/2"

7.3

(3.3)

 

0.2 (0.1)

6.9

(2.9)

-

 

 

 

 

 

 

5/8"

11.7 (5.3)

 

0.3 (0.2)

11.0 (4.6)

0.4 (0.2)

 

 

 

 

 

 

 

7/8"

24.4

(11.1)

 

0.7 (0.3)

23.0 (9.6)

1.0 (0.4)

 

 

 

 

 

 

 

 

1-1/8"

41.6

(18.9)

 

1.2 (0.6)

39.3

(16.3)

1.7 (0.7)

 

 

 

 

 

 

 

 

1-3/8"

63.3

(28.7)

 

1.9 (0.8)

59.8

(24.8)

2.7 (1.1)

 

 

 

 

 

 

 

 

Table 21 Recommended refrigerant lines (R22 or R407C) sizes OD copper

 

3.5 Tons

23 & 33 kW

 

036E (035E)

060E (059E)

Equivalent Feet (m)

 

 

 

 

Suction

Liquid

Suction

Liquid

 

 

 

 

 

0-50 (0-15)

7/8"

1/2"

1-1/8"

1/2"

 

 

 

 

 

51-100 (16-30)

1-1/8"

1/2"

1-1/8"

5/8"

 

 

 

 

 

101-150 (31-45)

1-1/8"

5/8"

1-3/8"

5/8"

 

 

 

 

 

Table 22 Line coupling sizes

Line Size

Coupling

Torque

OD Cu, in.

Size

lb-ft.

1/2 & 5/8

#10

35-45

1-1/8

#12

50-65

40

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Contents Liebert Challenger ITR Page Table of Contents Split System Models Chilled Water ModelsR407C Refrigerant Figures Tables System Descriptions Equipment Inspection Remote Sensor Installation LocationRoom Preparation Location ConsiderationsRemoval of Skid Unit shipping weightsHandling With Skid Domestic Export Model Lb kg 50Hz Models 60Hz ModelsCabinet dimensions Unit WeightSL-11897 Drain Line Piping ConsiderationsPiping connection size 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 connectionsBalancing the Air Distribution Plenum InstallationDucted Applications Checklist for Completed Installation Low Voltage Condenser LocationLine Voltage Lee-Temp/Flood Back Head Pressure Control CondensersAir-cooled condenser statistics 23 & 33 kW 067A 065A Refrigerant PipingRecommended line sizes OD copper inches Equivalent Length Hot Gas Line Liquid LineEquivalent lengths feet for various pipe fittings Fan Speed Control SystemsMaterials Supplied Condenser refrigerant per serial tagDehydration/Leak Test Single Circuit Shown Charging Refrigerant control settings psi kPaLee-Temp/Flood Back Head Pressure Control Systems PipingMaterials Supplied Low Pressure Cut Out High Pressure Cut Out 360 Single Circuit Shown Condenser Water-cooled general arrangement Water Regulating Valve Water Regulating Valve AdjustmentTesting Valve Function Water Regulating Valve Manual FlushingDrycooler Location Drycooler InstallationPump and Drycooler Expansion Tanks, Fluid Relief Valves and Other Devices Room dew point temperaturesGlycol Piping Dry Bulb Wet Bulb Relative Dew Point HumidityFilling Instructions Indoor unit glycol volume approximate gallons liters maxVolume in standard Type L copper piping Preparing the System for FillingEthylene glycol concentrations Glycol Solutions@ 50F 10C Filling the System See Note 30-1/4 For expansion tank dimensions, see on43-9/16 110 5mm 483mm 43-3/16 1097mmGlycol pump data Mounting hole dimensional dataDrycooler data Pump Pump Suction Pump Discharge ConnectionGlycol general arrangement Glycool general arrangement Glycol Regulating Valve Adjustment Glycol Regulating ValveChilled Water Models Air-Cooled Condensing Units Water/Glycol-Cooled Condensing UnitsRefrigerant Loop Recommended refrigerant lines R22 or R407C sizes OD copper Unit refrigerant chargeLine coupling sizes Evaporator Evaporator Condensing UnitQuick Connect Fittings Unit Dimensions See Table Outdoor Air-Cooled Condensing UnitsPFH067A-L Outdoor air-cooled condensing unit-top air discharge models See Table36-1/4 38-1/2 Piping and electrical connections top air discharge152 Electrical field connections, prop fan condensing module SL-11081 PG 8ACentrifugal Air-Cooled Condensing Units Installing the Indoor Condensing UnitModel Net Weight 60 Hz 50 Hz Lb kg MC65A MC64A Indoor centrifugal condensing unitDucting Airflow CFM CMHCentrifugal air-cooled condensing unit dimensional data AIR Cooled Water Cooled Piping Considerations Regulating Valve Adjustment and TestingWater and Glycol-Cooled Condensing Units Condenser Water RequirementsWater/glycol-cooled condensing unit dimensions WATER/GLYCOL Temperature Gauge Pressure Psig KPa R407C RefrigerantCalculating Subcooling Temperature Pressure Gauge Psig KPaExample Ti n Ne tIti 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.
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