Emerson Liebert Challenger ITR Technical Data Manual

Row-based, floor-mounted nominal 23 or 33kw systems, air-cooled, water/glycol-cooled, glycool, chilled water, split systems, 50 & 60 hz
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Table of Contents
Liebert
Challenger
®
Technical Data Manual - Row-Based, Floor-Mounted Nominal 23 or 33kW Systems, Air-Cooled,
Water/Glycol-Cooled, GLYCOOL, Chilled Water, Split Systems, 50 & 60 Hz
ITR
Precision Cooling
For Business-Critical Continuity™

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  • Page 1: Liebert Challenger Itr

    Liebert Challenger ® ™ Technical Data Manual - Row-Based, Floor-Mounted Nominal 23 or 33kW Systems, Air-Cooled, Water/Glycol-Cooled, GLYCOOL, Chilled Water, Split Systems, 50 & 60 Hz Precision Cooling For Business-Critical Continuity™...
  • Page 2: Product Nomenclature

    RODUCT OMENCLATURE NOTE Tables i, ii and iii show nomenclature for the complete range of all available product options. Not all combinations are possible. For assistance, contact your local dealer, Liebert representative or call 1-800-543-2778. Table i Product model information Challenger R = ITR, Nominal...
  • Page 3: Table Of Contents

    Liebert Challenger ITR ........
  • Page 4 Chilled Water System—Optional Features ........9 5.2.1 Chilled Water Flow Switch .
  • Page 5: Nside Front Cover

    10.3 SCR Reheat..............18 10.4 High-Efficiency Filter.
  • Page 6 Table 7 Liebert Challenger ITR water cooled data, 60 Hz (continued) ......29 Table 8 Liebert Challenger ITR water cooled data, 50 Hz.
  • Page 7 Liebert Challenger ITR electrical data—50 Hz........
  • Page 9: Dedicated , Precise Environmental Control

    EDICATED RECISE For sensitive electronics, environmental control is more than simple cooling. “Comfort” air condition- ing systems are designed for the comfort of people and simply cannot provide the kind of environment required by high performance computer or communication equipment. Temperature Control The high density heat load in a computer room or other similar application is beyond the capacity of ordinary air conditioning systems.
  • Page 10: Precision Environmental Control For Industrial , Telecommunications , Medical And Data Processing Equipment

    Efficiency in Economic Terms The Liebert Challenger ITR occupies 9.8 square feet (.91 square meters) of floor space. It can be located either between equipment racks or at the end of a row of racks. With room floor space valued at a premium per square foot, the small footprint of the Liebert Challenger ITR makes economic good sense.
  • Page 11: Figure 1 Unit Configurations

    Precision Environmental Control for Industrial, Telecommunications, Medical and Data Processing Equipment Figure 1 Unit configurations Chilled Water, Self-Contained System Plenum Available in two-way, three-way and four-way Free Discharge Grilles, Solid Plenum for ducting or low-profile, cold-aisle discharge plenum V-Frame Coil Glycol-Cooled, Self-Contained System With Matching Drycooler and Pump Expansion Tank...
  • Page 12: Figure 2 Unit Configurations, Continued

    Precision Environmental Control for Industrial, Telecommunications, Medical and Data Processing Equipment Figure 2 Unit configurations, continued Indoor Glycol-Cooled Split Systems Available Scroll Compressor V-Frame Coil Scroll Compressor IMAGE IS ILLUSTRATIVE ONLY Condensing Unit Outdoor Prop-Fan Air-Cooled Condensing Unit Indoor Centrifugal Fan Air-Cooled Condensing Unit Indoor Water-Cooled Condensing Unit...
  • Page 13: Local Monitoring Systems

    OCAL ONITORING Two levels of microprocessor control systems are available providing precise control and monitoring of the critical space. The Advanced Microprocessor is standard, and the Advanced Microprocessor with Graphics is optional. The main control functions are similar for both controls. Control The user must enter a three-digit password before making changes.
  • Page 14: Logging

    Logging • Alarm history log: The Advanced Microprocessor displays the 10 most recent alarms. The Advanced Microprocessor with Graphics displays the most recent 60 alarms. Both provide a time and date stamp for each event • Run time log: Displays run time and hours for major components (also allows reset of run hours) including compressors, GLYCOOL, fan, humidifier, and reheat.
  • Page 15: Standard Features -All Systems

    Fan Section The Liebert Challenger ITR features a quiet, low speed fan assembly with double inlet blower, life- time lubrication and self-aligning ball bearings. The motor and variable pitch drive are mounted on an adjustable base.
  • Page 16: Condensate Pump

    4.6.1 Condensate Pump The condensate pump, mounted in the bottom of most units, is used for unit drain water only. The condensate pump is complete with sump, motor and pump assembly and automatic control. The standard model has single float. A dual-float condensate pump, which includes connections to unit, common alarm, unit shutdown and one customer N/O contact is also available.
  • Page 17: Chilled Water System -Standard And Optional Features

    5.1.3 Line Insulation All chilled water piping within the Liebert Challenger ITR is fully insulated to assure full system capacity and prevent condensation. 5.1.4 Three-Way Control Valve The fully insulated control valve gives the conditioned space the precise cooling needed by electronic equipment.
  • Page 18: Refrigeration Systems

    EFRIGERATION YSTEMS Two versions are available: • Self-Contained Systems • Split Systems Self-Contained Systems These systems feature a scroll compressor and controls, expansion valve, hot gas bypass and evapora- tor coil in the room unit. Air-Cooled models also include a crankcase heater on the compressor and require field connection to remote air-cooled condenser.
  • Page 19: Air -Cooled System -Standard And Optional Features

    OOLED YSTEM Air-Cooled, Self-Contained Systems—Standard Features 7.1.1 Pump Down Control The compressor pump-down control is accomplished by a liquid-line solenoid valve used in conjunc- tion with a low pressure switch. 7.1.2 Condenser The Liebert manufactured low profile, direct drive propeller fan type air-cooled condenser provides quiet, efficient operation.
  • Page 20: Air-Cooled Split Systems-Standard Features

    Air-Cooled Split Systems—Standard Features 7.3.1 Centrifugal Fan, Condensing Unit The centrifugal condensing unit’s copper-tube, aluminum-fin coil is equipped with low-temperature controls to ensure year-round operation to -20°F (-29°C). The condensing unit is factory-wired, charged and tested and is ready for final connections. The centrifugal fan condensing unit includes scroll compressor, condenser coil, centrifugal blower assembly, high-pressure switch and Liebert Lee-Temp head pressure control.
  • Page 21: Water /Glycol -Cooled Systems -Standard And Optional Features

    ATER LYCOL OOLED Water/Glycol Self-Contained Systems—Standard Features Liquid-Cooled Condensers A co-axial condenser provides ample capacity to handle the heat rejection needs of the system while using a minimum of liquid and low total pressure drop. Regulating Valves Head pressure operated regulating valves accurately control the condensing temperature and main- tain system capacity for various entering liquid flow rates and temperatures.
  • Page 22: Water/Glycol-Cooled, Split System-Optional Features

    Water/Glycol-Cooled, Split System—Optional Features High Pressure The high pressure option for the condenser circuit consists of a two-way or three-way water regulat- ing valve and condenser rated at 350 psig (2413 kPa) water pressure. This option is required in appli- cations with large static heads.
  • Page 23: Glycool Systems -Standard And Optional Features

    YSTEMS GLYCOOL—Self-Contained Models Only The Liebert GLYCOOL free-cooling system is integrated with a glycol-cooled Liebert Challenger ITR. At outdoor temperatures below 35°F (1.6°C), the Econ-O-Coil is capable of providing total system capacity. At outdoor temperatures between 35° and 65°F (1.6° and 18.3°C), the unique modulating valve permits partial cooling of the space by the Econ-O-Coil with the DX system picking up the rest of the load.
  • Page 24: Glycol And Glycool-Cooled-Optional Equipment

    The low profile design features multiple direct drive propeller type fans, balanced to the heat rejection load. An integral, factory wired and tested control panel reduces installation time. Figure 7 Liebert Challenger ITR unit core Econ-O-Coil Glycol and GLYCOOL-Cooled—Optional Equipment...
  • Page 25: Optional Equipment -All Systems

    Clean, pure steam is generated in a disposable canister that is complete with supply and drain valves, electronic controls and steam distributor. The humidifier is provided with an automatic flush cycle to lengthen service life. An indicator on the Liebert Challenger ITR monitor panel is activated when the canister should be changed.
  • Page 26: Scr Reheat

    10.3 SCR Reheat This reheat uses stainless steel elements and also includes the necessary sensors and controls to pro- vide variable heat output to help maintain tighter control of room conditions, especially in lightly loaded applications. (Contact factory for available voltages.) Direct expansion units only. 10.4 High-Efficiency Filter Four optional filters are available in lieu of standard package.
  • Page 27: Smoke Detector

    10.9 Smoke Detector The smoke detector senses the return air, shuts down the unit upon detection, and sends visual and audible alarm. Dry contacts are available for a remote customer alarm. This smoke detector is not intended to function as or replace any room smoke detection system that may be required by local or national codes.
  • Page 28: Comprehensive Monitoring Systems -Optional

    11.0 C OMPREHENSIVE You will find a full range of monitoring and control systems, communications modules designed to interface Liebert equipment with a variety of building management systems, plus stand-alone moni- toring, control and leak detection devices. 11.1 Enterprise Monitoring Systems SiteScan Web is a comprehensive critical systems monitoring solution dedicated to ensuring reliabil- ity through graphics, event management and data extrapolation.
  • Page 29: Figure 10 Monitoring Configurations

    Leak Detection Modules • Provide quick detection and location of hazardous fluid leaks. Discrete Output Interface Card • Straightforward way to tie environmental units to a building management system or alarm panel. Figure 10 Monitoring configurations Enterprise Monitoring Comprehensive Monitoring Systems—Optional Network Monitoring Stand-Alone Monitoring and Leak Detection...
  • Page 30: Comprehensive Monitoring Solutions -Optional

    12.0 C OMPREHENSIVE ® 12.1 Liebert SiteScan Liebert SiteScan Web is a monitoring solution for critical environments that utilize a facility-view approach. The system enables communications from Liebert environmental and power units—as well as many other pieces of analog or digital equipment to a front end software package that provides monitoring, control and alarm management.
  • Page 31: Universal Monitor

    12.8 Universal Monitor The Universal Monitor keeps personnel on-site and at remote locations apprised of the status of equipment through local alarming and remote paging services. The panel will interface with anything that closes an electrical contact and any device with a 4-20mA signal. To improve pro- cess efficiency and troubleshooting, the panel tracks data in an alarm log, an event log and a trend log.
  • Page 32: System Data

    13.0 S YSTEM Table 2 Liebert Challenger ITR air-cooled data—60 Hz System Type BR = Horizontal Flow Indoor Unit Net Capacity Data 100°F DB, 70°F WB (37.8°C DB, 21.1°C WB) 20% RH Non Standard Flow Rates 95°F DB, 68.3°F WB (35°C DB, 20.2°C WB) 24% RH Non Standard Flow Rates 90°F DB, 66.5°F WB (32°C DB, 19.2°C WB) 28% RH...
  • Page 33: Table 3 Liebert Challenger Itr Air-Cooled Data-60 Hz (Continued)

    Table 3 Liebert Challenger ITR air-cooled data—60 Hz (continued) System Type Indoor Unit Infrared Humidifier - Standard Capacity - lb/hr (kg/hr) Steam Generating Humidifier - Optional Capacity - lb/hr (kg/hr) Filter Section - Efficiencies per ASHRAE 52.1 - Disposable Type 20% efficiencies available in 2"...
  • Page 34: Table 4 Liebert Challenger Itr Air-Cooled Data-50 Hz

    Table 4 Liebert Challenger ITR air-cooled data—50 Hz System Type BR = Horizontal Flow Indoor Unit Net Capacity Data 37.8°C DB, 21.1°C WB (100°F DB, 70°F WB) 20% RH Sensible Non Standard Flow Rates 35°C DB, 20.2°C WB (95°F DB, 68.3°F WB) 24% RH Sensible 32.2°C DB, 19.2°C WB (90°F DB, 66.5°F WB) 28% RH...
  • Page 35: Table 5 Liebert Challenger Itr Air-Cooled Data-50Hz (Continued)

    Table 5 Liebert Challenger ITR air-cooled data—50Hz (continued) System Type Indoor Unit Infrared Humidifier - Standard Capacity - kg/hr (lb/hr) Steam Generating Humidifier - Optional Capacity - kg/hr (lb/hr) Filter Section - Efficiencies per ASHRAE 52.1 - Disposable Type 20% efficiencies available in 51mm (2") - Standard, or optional 102mm (4") depths; other optional 102mm (4") efficiencies...
  • Page 36: Table 6 Liebert Challenger Itr Water Cooled Data, 60 Hz

    Table 6 Liebert Challenger ITR water cooled data, 60 Hz System Type BR = Horizontal Flow Indoor Unit Net Capacity Data 100°F DB, 70°F WB (37.8°C DB, 21.1°C WB) 20% RH Non-Standard Flow Rates 95°F DB, 68.3°F WB (35°C DB, 20.2°C WB) 24% RH 90°F DB, 66.5°F WB (32°C DB, 19.2°C WB) 28% RH...
  • Page 37: Table 7 Liebert Challenger Itr Water Cooled Data, 60 Hz (Continued)

    Table 7 Liebert Challenger ITR water cooled data, 60 Hz (continued) System Type Indoor Unit Infrared Humidifier - Standard Steam Generating Humidifier - Optional Filter Section - Efficiencies per ASHRAE 52.1 - Disposable Type 20% efficiencies available in 2" (51mm) - Standard, or optional 4" (102mm) depths; other optional 4" (102mm) efficiencies...
  • Page 38: Table 8 Liebert Challenger Itr Water Cooled Data, 50 Hz

    Table 8 Liebert Challenger ITR water cooled data, 50 Hz System Type Indoor Unit Net Capacity Data 37.8ºC DB, 21.1ºC WB (100ºF DB, 70ºF WB) 20% RH 35ºC DB, 20.2ºC WB (95ºF DB, 68.3ºF WB) 24% RH 32.2ºC DB, 19.2ºC WB (90ºF DB, 66.5ºF WB) 28% RH 29.4ºC DB, 18ºC WB (85ºF DB, 64.4ºF WB) 32% RH...
  • Page 39: Table 9 Liebert Challenger Itr Water Cooled Data, 50 Hz (Continued)

    Table 9 Liebert Challenger ITR water cooled data, 50 Hz (continued) System Type Indoor Unit Infrared Humidifier - Standard Steam Generating Humidifier - Optional Filter Section - Efficiencies per ASHRAE 52.1 - Disposable Type 20% efficiencies available in 51mm (2") - Standard, or optional 102mm (4") depths; other optional 102mm (4") efficiencies...
  • Page 40: Table 10 Liebert Challenger Itr Glycol Cooled Data, 60 Hz

    Table 10 Liebert Challenger ITR glycol cooled data, 60 Hz System Type BR = Horizontal Flow BM = Horizontal Flow with Econ-O-Coil Indoor Unit Net Capacity Data 100°F DB, 70°F WB (37.8°C DB, 21.1°C WB) 20% RH Sensible Non Standard Flow Rates 95°F DB, 68.3°F WB (35°C DB, 20.2°C WB) 24% RH...
  • Page 41: Unit

    Table 11 Liebert Challenger ITR glycol cooled data, 60 Hz (continued) System Type Indoor Unit Infrared Humidifier - Standard Steam Generating Humidifier - Optional Filter Section - Efficiencies per ASHRAE 52.1 - Disposable Type 20% efficiencies available in 2" (51mm) - Standard, or optional 4" (102mm) Depths; other optional 4" (102mm) efficiencies...
  • Page 42: Table 12 Liebert Challenger Itr Glycol Cooled Data, 50 Hz

    Table 12 Liebert Challenger ITR glycol cooled data, 50 Hz System Type BR = Horizontal Flow BM = Horizontal Flow with Econ-O-Coil Indoor Unit Net Capacity Data 37.8ºC DB, 21.1ºC WB (100ºF DB, 70ºF WB) 20% RH Total Sensible Non Standard Flow Rates 35ºC DB, 20.2ºC WB (95ºF DB, 68.3ºF WB) 24% RH...
  • Page 43: Table 13 Liebert Challenger Itr Glycol Cooled Data, 50 Hz (Continued)

    Table 13 Liebert Challenger ITR glycol cooled data, 50 Hz (continued) System Type Indoor Unit Infrared Humidifier - Standard Capacity, kg/hr (lb/hr) Steam Generating Humidifier - Optional Capacity, kg/hr (lb/hr) Filter Section - Efficiencies per ASHRAE 52.1 - Disposable Type 20% efficiencies available in 51mm (2") - Standard, or optional 102mm (4") depths;...
  • Page 44: Table 14 Liebert Challenger Itr Chilled Water Data, 60 Hz

    Table 14 Liebert Challenger ITR chilled water data, 60 Hz Capacity Data BTU/H (kW) @ 45°F (7.2°C) EWT, 10°F (5.6°C) Water Rise; Net Capacity Data Indoor Unit BR = Horizontal Flow 100ºF DB, 70ºF WB (37.8ºC DB, 21.1ºC WB) 20% RH, 12°F (6.7°C) Water Rise...
  • Page 45: Table 15 Liebert Challenger Itr Chilled Water Data, 50 Hz

    Table 15 Liebert Challenger ITR chilled water data, 50 Hz Capacity Data kW (BTU/H) @ 7.2°C (45°F ) EWT, 5.6°C (10°F) Water Rise; Net Capacity Data Indoor Unit BR = Horizontal Flow 37.8ºC DB, 21.1ºC WB (100ºF DB, 70ºF WB) 20% RH, 6.7°C (12°F)
  • Page 46: Dimensional Drawings

    14.0 D IMENSIONAL RAWINGS Figure 11 Cabinet and floor planning dimensional data—Horizontal flow models Filter Access by Opening Door Shaded area indicates a recommended clearance of 34" (864mm) for component access UNIT DIMENSIONAL DATA REAR VIEW 50 Hz 60 Hz Unit Weight Models Models...
  • Page 47: Figure 12 Cabinet And Floor Planning Dimensional Data

    Figure 12 Cabinet and floor planning dimensional data See Specification Sheet for floor stand height ordered Figure 13 Cabinet and floor planning dimensional data—Split system—5-ton centrifugal fan condensing unit Air Intake 1" (25mm) 30-1/2" 30-1/2" (775mm) (775mm) OPTIONAL FLOOR STAND DIMENSIONAL DATA Exhaust Dimensional Drawings...
  • Page 48: Figure 14 Cabinet And Floor Planning Dimensional Data-Split System-5-Ton Water/Glycol-Cooled

    Dimensional Drawings Figure 14 Cabinet and floor planning dimensional data—Split system—5-ton water/glycol-cooled condensing unit Model Net Weight 60 Hz 50 Hz lbs (kg) MC_69W MC_68W 282 (128)
  • Page 49: Figure 15 Cabinet And Floor Planning Dimensional Data-Split System-Propeller Fan Condensing

    Figure 15 Cabinet and floor planning dimensional data—Split System—Propeller fan condensing unit Fan Rotation (left side) Left Air Intake Shaded area indicates a minimum clearance of 18" (457mm) for proper air flow Outdoor Propeller Fan Condensing Unit Model 60 Hz 50 Hz PFH067A-_L PFH066A-_L...
  • Page 50: Figure 16 Cabinet And Floor Planning Dimensional Data-Propeller Fan Condensing

    Figure 16 Cabinet and floor planning dimensional data—Propeller fan condensing modules—Vertical air discharge Guard Height Left Air Intake 2" (51mm) Shaded area indicates a recommended clearance of 18" (457mm) for proper air flow. 4-23/32" (120mm) Model Numbers 60 HZ 50 HZ PFH067A-_H PFH066A-_H (1343)
  • Page 51: Electrical Data

    15.0 E LECTRICAL Table 16 Liebert Challenger ITR electrical data Self-Contained BR067A, BR071WG, BM061G Model Type Voltage With Electric Reheat and Humidifier (Infrared or Steam Generating) (Note: See Table 17 for units w/SCR reheats. 1.5 hp (1.1 kW) Motor 68.0 65.0...
  • Page 52: Table 17 Self-Contained With Scr Reheat

    Table 17 Self-contained with SCR reheat * Voltage (3, 60 Hz) Electric Reheat and Humidifier (Infrared or Steam Generating) Motor 81.3 96.9 Motor 83.1 98.7 Motor 86.2 101.8 Electric Reheat Only Motor 68.0 83.6 Motor 69.8 85.4 Motor 72.9 88.5 Note: Compressor is locked on.
  • Page 53: Table 18 Scroll Compressor And Main Fan (For Comparison Purposes Only)

    Table 18 Scroll compressor and main fan (for comparison purposes only) * Voltage (3, 60 Hz) Scroll Compressor 20.7 20.7 10.0 128.0 128.0 63.0 Main Fan Motor 1.5 hp (1.1 kW) 35.9 31.2 15.6 Motor 2.0 hp (1.5 kW) 46.9 40.8 20.4 Motor...
  • Page 54: Table 20 Outdoor Condensing Units-Quiet-Line

    Table 20 Outdoor condensing units—Quiet-Line Electrical Data 60 Hz, Quiet-Line, 95°F (35°C) Voltage Model PFHZ67A-_L 208/230-3-60 380-3-60 460-3-60 575-3-60 Table 21 Indoor condensing units, air-cooled * Electrical Data 60 Hz 95°F (35°C) Ambient Voltage Model 208/230-3-60 460-3-60 575-3-60 * Contact factory for 380-3-60 data. Table 22 Indoor condensing units, water-cooled * Voltage...
  • Page 55: Table 23 Fan Speed Control Condensers

    Table 23 Fan speed control condensers * 95°F (35°C) Ambient, 1 Phase - 60 Hz CSF 104 Voltage 208/230 15.0 15.0 * Contact factory for 380-3-60 data. Table 24 Liebert Lee-Temp condensers * 95°F (35°C) Ambient, 3 Phase - 60 Hz CSL104 Voltage 208/230...
  • Page 56: Table 27 Liebert Challenger Itr Electrical Data-50 Hz

    Table 27 Liebert Challenger ITR electrical data—50 Hz Self-Contained B*065A, 070WG, 058G Model Type Voltage With Electric Reheat and Humidifier (Infrared or Steam Generating) (Note: See Table 28 for units w/SCR reheats. Motor 1.1 kW (1.5 hp) 66.0 64.4 Motor 1.5 kW (2.0 hp)
  • Page 57 Table 28 Self-contained with SCR reheat Voltage (3, 50 Hz) Electric Reheat and Humidifier (Infrared or Steam Generating) Motor 78.8 Motor 80.5 Motor 83.6 Electric Reheat Only Motor 66.0 Motor 67.7 Motor 70.8 Note: Compressor is locked on. Heater is same size as standard. Table 29 Scroll compressor and main fan (for comparison only) Voltage (3, 50 Hz)
  • Page 58: Table 30 Outdoor Condensing Units

    Table 30 Outdoor condensing units Electrical Data 50 Hz 35°C (95°F) Ambient Voltage Model PFH066A-_L 200/230-3-50 380/415-3-50 Electrical Data 50 Hz 40°C (105°F) Ambient Voltage Model PFH066A-_H 200/230-3-50 380/415-3-50 Electrical Data 50 Hz Quiet-Line 35°C (95°F) Voltage Model PFHZ66A-_L 200/230-3-50 380/415-3-50 Table 31 Indoor condensing units air-cooled...
  • Page 59: Table 36 Drycooler Only - 35°C (95°F) Ambient, Three-Phase

    Table 36 Drycooler only - 35°C (95°F) ambient, three-phase Voltage (3, 50Hz) 200/230 380/415 DSF Model DSO Model DSO Model Table 37 Drycooler only - 35°C (95°F) ambient, single phase Voltage (1, 50Hz) 200/230 380/415 DSF Model Table 38 Pumps 200/230 380/415 1-1/2...
  • Page 60: Guide

    Design Requirements The environmental control system shall be a Liebert Challenger ITR factory-assembled unit. Stan- dard 60 Hz units shall be CSA (NRTL-C) certified. It shall be specifically designed for service from the front and rear of the unit. The system shall be designed for draw-through air arrangement to insure even air distribution to the entire face area of the coil.
  • Page 61 2.1.4 Advanced Microprocessor Control (Standard) The Advanced control processor shall be microprocessor based with a front monitor LCD display panel and control keys for user inputs. The controls shall be menu driven with on-screen prompts for easy user operation. The system shall allow user review and programming of temperature and humid- ity setpoints, alarm parameters, and setup selections including choice of control type.
  • Page 62 Alarms The microprocessor shall activate an audible and visual alarm in event of any of the following condi- tions: • High Temperature • Low Temperature • High Humidity • Low Humidity • Short Cycle • Compressor Overload (Optional) • Main Fan Overload (Optional) •...
  • Page 63 The control system shall maintain accumulative operating hours of compressor, reheat, humidifier, fan motor, and Econ-O-Coil. The ten most recent alarms shall also be retained. Communications The microprocessor shall be compatible with all Liebert remote monitoring and control devices. 2.1.5 Advanced Microprocessor Control with Graphics (Optional) The optional Advanced control processor shall be microprocessor based with a front monitor dot matrix display panel and control keys for user inputs.
  • Page 64 Alarms The microprocessor shall activate an audible and visual alarm in event of any of the following condi- tions: • High Temperature • Low Temperature • High Humidity • Low Humidity • Short Cycle • Compressor Overload (Optional) • Main Fan Overload (Optional) •...
  • Page 65 Data Collection The control system shall maintain accumulative operating hours of compressor, reheat, humidifier, fan motor, Econ-O-Coil, and heat rejection. The sixty most recent alarms shall also be retained. Graphing The control shall display the following graphical data: • Temperature, humidity, analog inputs •...
  • Page 66 2.1.12 Plenum The unit shall be supplied with a (2 way) (3 way) (4 way) (low-profile, cold-aisle) air discharge ple- num. The plenum shall be 18 in. (457mm) high or less, insulated and powder painted the same color as the room unit. 2.1.13 Disconnect Switch, Locking Type The manual disconnect switch shall be mounted in the high voltage section of the electrical panel.
  • Page 67 Electrical Data Fan Speed Control (FSC) Head Pressure Control (Standard) The winter control system for the air-cooled condenser shall be Liebert Fan Speed Control (FSC). The variable speed motor shall turn on at 10% of the supply voltage and modulate in response to head pressure to a full speed of 1050 RPM.
  • Page 68 Electrical Data Outdoor Unit Propeller Fan Drycooler (Standard) The Liebert manufactured drycooler shall be the low profile, slow speed, direct drive propeller fan type. The drycooler shall be constructed of aluminum and contain a copper tube aluminum fin coil with an integral electric control panel. The drycooler shall be designed for _____ °F (°C) ambient. Centrifugal Fan Drycooler (Optional) The system shall be supplied with a centrifugal fan drycooler (LCD).
  • Page 69 Electrical Data Propeller Fan Drycooler (Standard) The Liebert manufactured drycooler shall be the low profile, slow speed, direct drive propeller fan type. The drycooler shall be constructed of aluminum and contain a copper tube aluminum fin coil with an integral electric control panel. The drycooler shall be designed for _____ °F (°C) ambient. Centrifugal Fan Drycooler (Optional) The system shall be supplied with a centrifugal fan drycooler (LCD).
  • Page 70 Electrical Data Propeller Fan Condensing Unit The condenser coil shall be constructed of copper tubes and aluminum fins with a direct drive propel- ler type fan and shall include a scroll compressor, high pressure switch, Liebert Lee-Temp receiver, head pressure control valve, and liquid line solenoid valve. All components shall be factory assembled, charged with refrigerant and sealed.
  • Page 71 Electrical Data Single Glycol Pump Package (Standard) This system shall be provided with a centrifugal pump mounted in a weatherproof and vented enclo- sure. The pump shall be rated for GPM (l/s) at _____ ft. of head (kPa), and operate on _____ Volt, 3 phase, _____ Hz.
  • Page 72 Comprehensive Monitoring Solutions (For detailed Guide Specifications on these products, refer to information posted at www.liebert.com) • Liebert SiteScan Web System • Liebert SiteLink Module • Liebert Nform • Liebert IntelliSlot Web/485 Card With Adapter and Liebert IntelliSlot 485 Card With Adapter •...
  • Page 74 Embedded Computing Connectivity Embedded Power DC Power Monitoring Business-Critical Continuity, Emerson Network Power and the Emerson Network Power logo are trademarks and service marks of Emerson Electric Co. ©2008 Emerson Electric Co. Technical Support / Service Liebert.monitoring@emerson.com Outside the US: 614-841-6755 upstech@emersonnetworkpower.com...

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