tm computer room air-conditioning—60 hz · pdf file• 2-way/3-way modulating valve...

®

TM

Computer Room Air-Conditioning—60 Hz

Technical Data

Contents

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Scalable Solution for Critical Environments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Standard Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Optional Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Microprocessor Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

In-row Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Determining Cooling Capacity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Performance Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Performance Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Dimensional Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Piping Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Electrical Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Guide Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Guidelines for Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

SKU Selection:IR40-CAA-ESAIR40-CCA-ESAIR40-CDA-ESAIR40-CEA-ESAIR40-CMA-ESA

IR Capacity Configuration Voltage Reheat Humidifier Air PatternIR 40= 40kW C=Chilled Water AA=208/208 E=Electric S= Steam Canister A= In-Row

CA=480/208DA=480/480EA=600/208

MA=600

APC NetworkAIR™ IR-CW i

ii APC NetworkAIR™ IR-CW

Overview

The modular, Floor Mount com-puter room air-conditioning system offers efficient, effective and eco-nomical cooling for a variety of spaces.Precision environmental require-ments now reach far beyond the confines of the traditional data cen-ter or computer room to encompass a larger suite of applications, referred to as technology rooms. Critical environment applications include:

• Computer rooms• Telecommunication facilities• Clean rooms• Power equipment• Medical equipment rooms• Archives• LAN/WAN environments

A worldwide network of APC rep-resentatives is fully qualified to provide engineering, sales, installa-tion and service for our products. APC warrants all parts for 12 months from shipment. Extended warranties are available.

CapacityThe Network AIR IR chilled water configuration is available in nomi-nal 40kW and 80kW capacities.

Room Air DistributionIn-row systems are placed in line with rack enclosures. At least one system is used per hot aisle. Air is drawn in through the rear of the sys-tem, cooled, and discharged into the cold aisle using a top plenum. Optional diffusers can be installed on the left and right side of the ple-num, over adjacent racks, to reduce noise levels and promote even air distribution. The NetworkAIR IR delivers high volumes of airflow (550 cfm per ton/160 cfm/kW) to eliminate hot spots in densely populated environments.

Configuration• Chilled Water

Compliance Approval• UL Listed to UL 1995 and CSA

C22.2 No. 236• MEA (City of New York)

Standard Features• Direct Drive Motor/Blower

Assembly• Frequency Controlled Motor• Programmable Input/Output

Interface Module• Steam Generating Humidifier• Main Power Circuit Breaker(s)• Double Skin Panels• Microprocessor Controller• 30% ASHRAE 52.1 Filters• Cross Circuited Cooling Coil• 94VO Thermal (anti-fungal)

Condensate Pan• Predictive Failure Warnings• SCR Controlled Electric Reheat• Smoke Detector• High Lift, Dual Float Condensate

Pump• Twist-Lock Critical Power Feed

Whip• Selectable Up or Down Piping Kit• Electrical Panel• Rear Door Kit• Discharge Plenum• 2-way/3-way Modulating Valve• Network Management Card• Redundant Group Control• Remote Temp/Hum Sensor• Dual Critical/Non-Critical Power

Inputs (N/A 600V Single Input)

Optional Features• Flowswitch • Spot Water Detector(s)• Cable Leak Detector• Air Discharge Diffusers• Circuit Setter Read-Out• Bay Kit IR/Netshelter VX• Side Panel Kit• Additional Temp/Hum Sensors

APC NetworkAIR™ IR 1

Scalable Solution for Critical Environments

Temperature and Humidity Design ConditionsMaintenance of temperature and humidity design conditions is criti-cal to the smooth operation of a technology room. Design condi-tions should be 72-75°F (22.2-24.8°C) and 45-50% relative humidity (R.H.). As damaging as the wrong maintained conditions can be, rapid temperature swings can also have a negative effect on hardware operation. This is one of the reasons hardware is left pow-ered up, even when not processing data. Computer room air condition-ing is designed to maintain temperature at ±1°F and humidity at ±3-5% R.H. 24 hours a day, 8760 hours a year. Vapor barriers and sealed rooms are required to main-tain these tolerances.In contrast, comfort systems are designed to maintain ±5°F from the temperature setpoint. There is usu-ally no dedicated humidity control and the simple controllers cannot maintain the set point tolerance required for temperature, allowing potentially harmful temperature and humidity swings to occur. This is not acceptable for sensitive elec-tronic equipment.

Air QualityComputer room air conditioners provide a high CFM, around 600 CFM/ton (160 cfm/kW). This high CFM moves more air through the space improving air distribution and reducing the chance of localized hot spots. It also allows more air to move through filters, ensuring a cleaner environment. This requires a moderate- to high-efficiency filter bank to minimize airborne particles.

Problems Caused by the Wrong EnvironmentA poorly maintained technology room environment will have a nega-tive impact on computer room operations. The results can range from data corruption to complete system shutdowns and failures.

High & Low TemperatureA high or low temperature swing or rapid temperature swings can cor-rupt data processing and shut down an entire system. Temperature vari-ations can alter the electrical and physical characteristics of elec-tronic chips and other board components, causing faulty opera-tion or failure. These problems may be transient or may last for days. Transient problems can be very dif-ficult to diagnose and repair.

High HumidityHigh humidity can result in tape and surface deterioration, head crashes, condensation, corrosion, paper handling problems and (gold and silver) migration leading to component and board failure.

Low HumidityLow humidity greatly increases the possibility of static electric dis-charges. Such static discharges can corrupt data and damage hardware.

APC NetworkAIR™ IR, The Right SolutionThe APC NetworkAIR™ IR pro-vides the maximum amount of computer room cooling in a com-pact footprint. Highly scalable, the system is capable of growing with your cooling needs as they increase. Each system comes standard with concise capacity controls for high efficiency operation.

Compact FootprintThe NetworkAIR IR delivers a high capacity of cooling in a small “overall” footprint. Since the sys-tem requires only front service access, systems can be placed side by side and valuable floor space is not wasted.

2 APC NetworkAIR™ IR


In-row AdvantagesThe In-row solution improves energy efficiency and cooling ability in a number of ways. First, the IR draws air directly from the hot aisle, allowing the IR to take advantage of higher heat transfer efficiency due to higher tempera-ture differences. It can then discharge room temperature air directly in front of the servers it is cooling. This increases energy efficiency by allowing the chiller to operate at higher leaving water temperatures. Also, since it never chills the air below it's dewpoint, very little if any dehumidification occurs, significantly decreasing water consumption and energy use, and eliminating heat transfer inefficiencies caused by wet coils.

Chilled Water ConfigurationChilled water systems utilize water from a chiller plant for cooling. chilled water is com-monly used in large buildings and high rises and can serve multiple indoor units.

• System used with a chiller plant• Cost effective for large installations

EVAPORATOR

CHILLER

CIRCUIT SETTER



Hot Aisle Containment SystemExtremely high density applications can further benefit from the In-Row cooling architecture of the NetworkAIR IR. Modular ceiling tiles and doors can be used to enclose the hot aisle. This increases the densities that can be handled in a single rack enclosure by eliminating mixing of hot and cold air streams. This method, called load neutralization, removes the heat from the hot aisle, cools it, and then returns it to the surrounding room area at room temperature or slightly below. The warmer return air temperatures that are achieved in this application increase the capacity of the air conditioner and almost eliminate the need for make-up humidification.Use of modular ceiling tiles across a 4’ hot aisle that connects two opposite rack enclosures makes expansion quick and simple. Expansion kits, with necessary ceiling tile and all baying hardware, can be ordered to increase the size of the hot aisle by one rack on each side. The end doors can be easily removed and re-attached for expansion.The enclosed hot aisle prevents any warm return air from mixing with cold supply air. In effect, all surrounding room air can act as supply air to the system. The hot aisle containment system is beneficial in any environment. It can be deployed quickly in any controlled space without expensive additions to the infrastructure, such as raised floor or ductwork.

na0905a



Hot Aisle Containment Configuration

122(3098.8)

32.46( 824.48)

NetShelter NetShelter NetShelter NetShelter PDUUPS

NetShelter NetShelterNetShelter NetShelterNetworkAIR FM

600mm70.87(1800)

Note: All dimensions are in Inches (millimeters)

52.25(1327.15)

80 kW UPS PDUXR Battery

40kW option

80kW option

600mm

NetShelter

NetShelter

600mm

NetShelter

NetShelter

750mm

750mm 750mm 750mm

na0906a

42.50(1079.50)

35.50(901.70)

36.00(914.40)


Standard Features

Double Skin PanelsThe frame is bolt together 12 gauge formed steel for maximum strength. Cabinet is serviceable from the front. All exterior panels and corner posts on the frame are powder coated for durability and an attrac-tive finish. Front exterior panel crowne is 16 gauge. All other pan-els are double skin, 22 gauge exterior, 22 gauge interior with 1 ½ lb. (.68 kg) per cubic foot insulated for quiet operation. Insulation is CFC-free and recyclable. Double skin panels isolate insulation from the air stream and further reduce sound levels. Left and right front panels are hinged and removable for easy access. Middle panel is removable.

Direct Drive Motor/Blower AssemblyEach cabinet includes precision bal-anced centrifugal blower assemblies that are less than 1 mil displacement on all axis for quiet, reliable operation. The blowers are mounted based on mass and fre-quency to eliminate vibration and noise. A direct drive (L10-500,000 hour bearing life) motor and fre-quency controller are used with each blower in the system to enhance user functionality. Each unit is equipped with two blower assemblies.

Frequency Controlled MotorA frequency controlled drive is installed for each direct drive blower motor. The frequency con-troller communicates with the microprocessor controller allowing user adjustable rpm settings via the main display. This makes field air balancing quick and easy. Field air balancing is a common after thought that can be expensive and lead to back-charges. Each time the fans are started, the frequency con-trolled drives control the ramp-up of fan speed. This thirty second soft start lowers the in-rush current and reduces the locked rotor amps used when sizing generators.

2-way/3-way Modulating ValveA fully modulating valve is micro-processor controlled to automatically direct the proper amount of chilled water into the cooling coil to maintain desired conditions. The standard valve pressure rating is 400 psi (2758 kPa). The valve is user configurable to be two-way or three-way.

Electrical PanelThe electrical panel contains the contactors, starters, overload pro-tection devices, and input power disconnects. The panel is remov-able for easy access to blower motor assemblies.

Programmable Input/Output Interface ModuleThe unit provides field connections through a system programmable input/output module. Up to three additional input/output interfaces may be added to the main module. Each interface module is program-mable with inputs that can be mapped to any system alarm or annunciated to outputs as a system alarm or custom (12 character) alarm.

Cross Circuited Cooling Coil/94VO Thermal Condensate PanCross-circuited cooling coils con-nect to the incoming chilled water supply to provide greater sensitivity in cooling and dehumidification. Designed for high sensible heat ratios, the coil is constructed with copper tubes, aluminum fins, and galvanized steel end plates. Con-densate pan is 94V0 thermal formed, anti-fungal, non-ferrous material for higher indoor air qual-ity. Cooling coil is configured as V.

30% ASHRAE 52.1 FiltersThe filtration of conditioned air is extremely vital to maintaining the clean, particle-free environment required by electrical equipment. The system uses 30% efficient (100 microns) (ASHRAE 52.1-92), 4” (102 mm) deep filters, with full depth filter pleats. Deeper filters produce a lower pressure drop, requiring less energy during normal operation.

Rear Door KitRear doors and system accessories, including door mounting frames and front side toe kick, ship loose to maintain system width within access limits of standard door frames.

Discharge PlenumThe front discharge plenum consists of a perforated metal face that dis-charges air towards the front of the cooling unit. The plenum is a low profile design. It's height does not exceed that of adjacent IT enclo-sures top mounted with cable management troughs. Plenum extensions are available to cantile-ver over adjacent 19" or 23" IT enclosures if it is desired to reduce discharge velocity and broadband noise emissions.


Standard Features

Selectable Up or Down Piping KitChoose from top or bottom piping kit. Top piping kit connects to inter-nal stubs and turns the piping 90° upward out the back of the system. Bottom piping kit connects to inter-nal stubs and turns the piping 90° degrees downward. (Requires access to raised floor).

High Lift, Dual Float Condensate PumpThe factory installed and wired con-densate pump is capable of pumping 60 gal/hr (0.06 L/s) at 60 ft. (18.3 m) head.

Dual Critical/Non-Critical Power InputsThe system can be optionally con-figured with two power feeds for critical and non-critical operation. Fans, controller, and condensate pump are critical, while electric reheat and humidification are non-critical. This allows a level of sys-tem fault tolerance and uninterruptible cooling to exist, depending on building infrastruc-ture design (N/A 600V single input models).

Network Management CardPermits multi-level access to moni-toring, control, and event notification features over the user’s network.

Steam Generating HumidifierThe humidifier utilizes a pure steam generator specifically designed for precision environmental control. The pure steam eliminates contami-nating mineral deposits, potentially harmful bacteria, white dust and excessive humidity. The humidifier requires little scheduled mainte-nance. Automatic flushing combined with a communication link to the microprocessor control-ler signals when the canister is to be changed. Humidifier is proportion-ally controlled to meet the humidification demands of the con-ditioned space. The communication link to the main controller provides diagnostic capability for the humidifier.

Predictive Failure WarningsSeveral components within the unit will provide a warning that service is needed prior to failure occurring.

Main Power Circuit Breaker(s)A nonautomatic main power circuit breaker disconnects all high voltage power to the unit if necessary. The disconnect switch is accessible without removing the electric box cover.

SCR Controlled Electric ReheatElectric reheat elements are low watt density, wired for 3-phase and loaded equally on all three phases, SCR controlled, and electrically and thermally protected by both automatic and manual reset thermal cut outs. Reheat coils are stainless steel, fin tubular construction.

Smoke DetectorThe factory-installed smoke detec-tor is designed to sense smoke in the return air stream. Upon detec-tion of smoke, an audible and visual alarm on the microprocessor will be activated and the unit will be imme-diately shutdown.

Twist-Lock Critical Power Feed WhipA power whip with twist-lock receptacle is provided for the criti-cal power input. This allows easy, seamless connection to APC power distribution equipment when part of a total InfrastruXure solution. (Standard on 208V units, N/A with other voltages.)

Redundant Group ControlAllows up to 4 groups of IR units to communicate with each other for redundancy, demand fighting pre-vention, mode assist, and global sharing of certain settings. Requires standard network cable interconnection.


Optional Features

Spot Water Detector(s)The solid-state spot water detector activates an audible alarm on the controller when moisture is detected. A maximum of four detectors (spot or cable) may be installed.

Side Panel KitSide panels can be used for cover-ing right and left sides of the system when not bayed to APC NetShelter enclosures to create a stand-alone solution.

Flow SwitchIn-line paddle type flow switch placed in pipe during installation allows alarm or other control func-tion to occur should a loss of chilled water flow be experienced.

Circuit Setter Read-OutProvides correlation of an observed differential pressure with a volu-metric flow rate of chilled water for installation and service assistance.

Air Discharge DiffusersPlenum extensions installed to the left and right of the main plenum for noise reduction and increased distribution pattern.

Bay Kit IR/NetShelter VXBaying kits made of 16 gauge metal enable baying of the cooling system to APC Netshelter enclosures. The baying kits are constructed to impede airflow between the two components being joined and thus prevent accidental misalignment when installing heavy equipment in IT enclosures.

Cable Leak DetectorA leak detection cable is placed on the floor or subfloor around all pos-sible leak sources. If water or other conductive liquids contact the cable anywhere along its length, the mas-ter controller visually and audibly announces a leak. The 40 ft. cable may be cascaded to make custom lengths up to 1000 ft.

Network CableVarious lengths of network cable are available to ship with your cool-ing system. The network cable is used to interconnect multiple cool-ing units in a redundant group, as well as to connect the network man-agement card to your LAN.


Microprocessor Controller

Microprocessor Controller The microprocessor controller is standard on each system. The con-troller provides precision control for the demanding requirements of:

• Data centers• Control rooms• Clean rooms• Switch rooms• UPS rooms

The easy-to-use display allows the operator to select options from the device’s menu-driven interface to control and monitor the connected air conditioning system.

Open ArchitectureThe NetworkAIR IR protocol is open for integration with all build-ing management systems. Communication interface on the system can be Serial RS232 or MODBUS RS485.

Control TypeController utilizes proportional and integral derivative (PID), a time proven precision environmental control method. This allows for custom tuning of control variables to achieve desired system response.

Functions• Supply and Return Air Conditions• Operational Mode Control• Event Logging• Alarms• Redundant Group Control• Fan Speed Adjustment• Input/Output Module

Programming

LoggingThe microprocessor displays the 30 most recent alarms. Each alarm log contains a time/date stamp as well as operating conditions at the time of occurrence. The controller also displays run time, in hours, for major components (heaters, humid-ifier, blower motors).

ControlThe backlit, four-line x twenty-character display is password configurable.

• Temperature Setpoint 65-85° F (18-29° C)

• Humidity Setpoint 30-80% R.H.• Blower Motor Setpoint 40-60Hz.

(Factory preset for model size and options.)

• High Temperature Alarm 35-90° F (2-32° C)

• Low Temperature Alarm 35-90° F (2-32° C)

• High Humidity Alarm 15-85% RH• Low Humidity Alarm 15-85% RH

Customer Interface ModulesEach system comes equipped with up to 3 additional discrete input/output modules for a total of 16. Each interface module is program-mable with outputs that can map from any system alarm through the microprocessor controller. Inputs shall be capable of mapping to out-puts as a system alarm or custom alarm.Alarms

• High return temperature• Low return temperature• High return humidity• Low return Humidity• Clogged filter• Return sensor failure• High supply temperature• Low supply temperature• High supply humidity• Low supply humidity• Loss or low airflow• Loss of water flow• Supply sensor failure• Water regulator actuator failure• Humidifier failure• Replace humidifier canister• Frequency controller failure• Air block interlock open• Water detected• Fire (thermal sensor trip)• Smoke detected• Condensate pump failure

Alarm LED

Warning LED

Check Log LED

System On LED

Liquid Crystal Display (LCD)

Menu Selection scroll keys

ESC key

Enter key

Help key

ESC

?

Status

CheckLog

MinorAlarm

MajorAlarm


In-row modelNetworkAIR IR external components

Plenum (optional) Front toe kick Rear panel bracket Front door handle Rear panels Disconnect handle Side panel (optional) Display interface Rear toe kick Plumbing chase

10 APC NetworkAIR™ IR-CW

In-row model

NetworkAIR IR internal components

Motor and blower assembly Condensate pump

Humidifier Distributor nozzle User interface box

Fan interlock (4) Firestat

Smoke detector sample tube Air filters

Condensate pan Air block and access panels

3-way to 2-way conversion valve Temperature/humidity sensor

Circuit Setter (return air)

Cooling coil Electrical panel

Power distribution box Temperature/humidity sensor

Humidifier (supply air)

APC NetworkAIR™ IR-CW 11

Determining Cooling Capacity

How to determine capacity of the NetworkAIR IR cooling unit:IT equipment requires two variables for effective cooling: air at the ideal temperature, and enough of that air made available to the equipment’s air intake vents. It is entirely possible, though undesirable, to design a computer room with enough heat removal capacity, but with an inadequate volumetric flow rate of cool air supply. When this condi-tion exists, IT equipment will be subjected to excessively high operating temperatures on a localized basis due to recirculation, and cooling equipment will operate at less than optimal efficiency. APC provides the necessary data to prevent this undesirable and preventable situation. The first table, titled “Recommended Capacity Limitations” shows the heat removal capacity of the NetworkAIR IR for a given set of operating conditions. The six tables following, titled “Performance Specifications” show the recommended maximum amount of load that should be placed upon the cooling unit solely based on volumetric limits of cool air supply. The lesser of the two capacity numbers obtained from the “Recommended Capacity Limitations” table and “Performance Specification” table should be considered the maximum load capable of being served by the NetworkAIR IR. A definition of the terms in these tables follows:

IT Equipment Air Flow (cfm/kW)The average cooling air flow rate demanded by IT equipment in cubic feet per minute divided by the total actual power dissipation of IT equipment in kilowatts.

Recommended Capacity Limit (kW)The corresponding maximum load in kilowatts capable of being served by the cooling unit solely based on conserva-tion of volumetric air flow.

DB (°F and °C)The dry bulb temperature in degrees Fahrenheit and Celsius of the return air stream to the cooling unit.

WB (°F and °C)The wet bulb temperature in degrees Fahrenheit and Celsius of the return air stream to the cooling unit.

CW delta T (°F)The difference in temperature in degrees Fahrenheit between chilled water entering and exiting the cooling unit.

Sensible Net Capacity (BTU/HR and kW)The sensible heat removal capacity net of fan heat, of the cooling unit at stated operating conditions.

Total Net Capacity (BTU/HR and kW)The total (sensible + latent) heat removal capacity net of fan heat, of the cooling unit at stated operating conditions.

Sensible Heat Ratio (SHR)The sensible heat ratio of the unit at stated conditions. Sensible Heat Ratio is the ratio of sensible capacity to total capacity.

CW Flow Rate (GPM and L/s)The volumetric flow rate of chilled water through the cooling unit in gallons per minute, and liters per second, that is required to result in the stated performance.

Total CW Pressure Drop (PSI and kPa)The differential pressure observed between inlet and outlet chilled water connections for the stated CW flow rate.


Recommended Capacity LimitationsIT Equipment Air Flow Recommended Capacity Limit

cfm/kW kW160 40.3155 41.6150 43.0145 44.5140 46.1135 47.8130 49.6125 51.6120 53.8115 56.1110 58.6105 61.4100 64.595 67.990 71.785 75.980 80.675 86.070 92.165 99.260 107.5


Performance Specifications—45°F EWTTemperature DB, WB kW CW Delta T Total Net

CapacitySensible Net

CapacitySensible Heat

Ratio CW Flow Rate* Total CW Pressure Drop

°F (°C) °F BTU/HR (kW) BTU/HR (kW) SHR GPM (L/s) PSI (kPa)80°F DB, 62.8°F WB (26.7°C DB, 17.1°C WB)

40kW 10°F N/A N/A N/A N/A N/A40kW 12°F 182,000 (53.3) 175,000 (51.3) 0.96 33.1 (2.09) 5.1 (35.2)40kW 14°F 153,000 (44.9) 153,000 (44.9) 1.00 24.2 (1.53) 3.0 (20.7)40kW 16°F 136,000 (39.9) 136,000 (39.9) 1.00 19.0 (1.20) 2.0 (13.8)40kW 18°F 116,000 (33.9) 116,000 (33.9) 1.00 14.7 (0.93) 1.4 (9.7)40kW 20°F 91,000 (26.9) 91,000 (26.9) 1.00 10.9 (0.69) 0.8 (5.5)

85°F DB, 64.5°F WB (29.4°C DB, 18.1°C WB)40kW 10°F N/A N/A N/A N/A N/A40kW 12°F 221,000 (64.6) 212,000 (62.0) 0.96 39.4 (2.49) 7.0 (48.3)40kW 14°F 207,000 (60.6) 202,000 (59.3) 0.98 31.9 (2.01) 4.8 (33.1)40kW 16°F 179,000 (52.3) 179,000 (52.3) 1.00 24.4 (1.54) 3.0 (20.7)40kW 18°F 162,000 (47.6) 162,000 (47.6) 1.00 19.8 (1.25) 2.1 (14.5)40kW 20°F 143,000 (41.9) 143,000 (41.9) 1.00 15.9 (1.00) 1.5 (10.3)

90°F DB, 66.1°F WB (32.2°C DB, 18.9°C WB)40kW 10°F N/A N/A N/A N/A N/A40kW 12°F N/A N/A N/A N/A N/A40kW 14°F 246,000 (72.0) 240,000 (70.3) 0.98 37.4 (2.36) 6.4 (44.1)40kW 16°F 219,000 (64.3) 219,000 (64.3) 1.00 29.4 (1.85) 4.1 (28.3)40kW 18°F 205,000 (60.0) 205,000 (60.0) 1.00 24.5 (1.55) 3.0 (20.7)40kW 20°F 188,000 (55.3) 188,000 (55.3) 1.00 20.5 (1.29) 2.2 (15.2)


100°F DB, 69.2°F WB (37.8°C DB, 20.7°C WB)40kW 10°F N/A N/A N/A N/A N/A40kW 12°F N/A N/A N/A N/A N/A40kW 14°F N/A N/A N/A N/A N/A40kW 16°F 293,000 (85.9) 293,000 (85.9) 1.00 39.6 (2.50) 6.9 (47.6)40kW 18°F 283,000 (83.0) 283,000 (83.0) 1.00 33.2 (2.09) 5.1 (35.2)40kW 20°F 271,000 (79.3) 271,000 (79.3) 1.00 28.7 (1.81) 4.0 (27.6)








40kW 10°F 177,000 (51.9) 173,000 (50.6) 0.97 38.5 (2.43) 6.7 (46.2)40kW 12°F 154,000 (45.0) 154,000 (45.0) 1.00 28.3 (1.79) 3.9 (26.9)40kW 14°F 138,000 (40.6) 138,000 (40.6) 1.00 22.1 (1.39) 2.6 (17.9)40kW 16°F 120,000 (35.3) 120,000 (35.3) 1.00 17.1 (1.08) 1.7 (11.7)40kW 18°F 98,000 (28.9) 98,000 (28.9) 1.00 12.7 (0.80) 1.1 (7.6)40kW 20°F 66,000 (19.6) 66,000 (19.6) 1.00 8.2 (0.52) 0.6 (4.1)













85°F DB, 64.5°F WB (29.4°C DB, 18.1°C WB)40kW 10°F 188,000 (55.0) 188,000 (55.0) 1.00 40.8 (2.57) 7.5 (51.7)40kW 12°F 178,000 (52.3) 178,000 (52.3) 1.00 32.4 (2.04) 5.2 (35.9)40kW 14°F 165,000 (48.3) 165,000 (48.3) 1.00 25.9 (1.63) 3.7 (25.5)40kW 16°F 149,000 (43.6) 149,000 (43.6) 1.00 20.7 (1.31) 2.8 (19.3)40kW 18°F 131,000 (38.3) 131,000 (38.3) 1.00 16.4 (1.03) 2.1 (14.5)40kW 20°F 109,000 (31.9) 109,000 (31.9) 1.00 12.5 (0.79) 1.6 (11.0)






Performance Data—GeneralMODULATING VALVES

Size -2/3 Way Ball Valve --NPT (Cv)** 1-1/2 (35.4)AIR SYSTEM -- DIRECT DRIVE CENTRIFUGAL

Air Volume -- CFM (L/s) 6,450 (3,044)Blower Motor -- HP (kW) 3.0 (2.3)Number of Blowers 2

COOLING COIL -- V FRAME, COPPER TUBE/ALUMINUM FINFace Area -- ft2 (m2) 21.0 (1.93)Rows Deep 3Face Velocity -- FPM (m/s) 307 (94)

HUMIDIFICATION --- SOLID STATE ELECTRODE CANISTERFlush Cycle automaticCapacity -- Lbs/hr (Kg/hr) 10 (4.53)kW 3.2

FILTERSQuantity 5Size -- Inches (mm) 12.8×29.0 (325×737)Depth -- Inches (mm) 4.0 (100.8)

REHEATElectric -- Equally Loaded Three (3) Phase, Finned Tubular, Low-Watt Density

Capacity -BTU/HR (kW)*** 41,000 (12.0)PHYSICAL DATA

Weight -- lbs (kg) 1220 (553)Height -- Inches (mm) 89.00 (2,261)Length -- Inches (mm) 71.00 (1,803)Depth -- Inches (mm) 42.00 (1067)

CONNECTION SIZES****Chilled Water

Supply Line -- Inches 1-5/8Return Line -- Inches 1-5/8

HumidifierSupply Line -- Inches 1/4

Condensate DrainDrain Line -- Inches 5/8

*Maximum flow rate is 44 GPM (2.77 L/s)**3-Way to 2-Way Single Seated, 400 psig W.W.P. max***Includes Motor Heat, With equal loading on each phase, rated at 240V / 3-phase, 480V / 3-phase and 600V / 3-phase****Connections sizes, not recommended piping sizes


Electrical Data

The NetworkAIR IR product has the capability of splitting out the electrical input from a single electrical input to two electrical inputs. The total load draw for the system remains the same with one input supplying power to all critical loads and one input supplying power for all non-critical loads. In some cases, a two input system may be preferred as a means of supplying UPS power to critical loads. Single input = One electrical input for the system for all internal electrical loads.Dual Input is divided into non-critical and critical loads. Non-critical = This input supplies power to all internal loads that are not considered critical during a loss of utility power. Non-Critical loads include the humidifier and electric reheat. Critical = This input supplies power to all internal loads that are considered critical. Critical loads include the controller, condensate pump, and fans.

CHILLED WATERREHEAT Electric

HUMIDIFIER Electrode Canister - SteamVOLTAGE - MAIN 208 230 480 480 480 600 600 600VOLTAGE - UPS 208 230 208 230 480 208 230 N/A

FM Single Input

CombinedOA 34.4 35.5 N/A N/A 16.8 N/A N/A N/A

WSA 57.8 57.8 N/A N/A 28.0 N/A N/A N/AMOP 60.0 60.0 N/A N/A 30.0 N/A N/A N/A

FM Dual Input

Non-Critical(Main)

OA 21.6 23.9 11.0 11.0 11.0 9.6 9.6 14.2WSA 40.2 40.2 19.3 19.3 19.3 16.4 16.4 22.1MOP 50.0 50.0 20.0 20.0 20.0 20.0 20.0 25.0

Critical(UPS)

OA 12.8 11.6 12.8 11.6 5.8 12.8 11.6 N/AWSA 15.8 15.8 15.8 15.8 7.9 15.8 15.8 N/AMOP 20.0 20.0 20.0 20.0 15.0 20.0 20.0 N/A

*OA = Operating Amps, WSA = Wire Size Amps, MOP = Maximum Overcurrent Protection


Dimensional DataNetworkAIR IR Assembled Module

* All dimensions are in inches (mm).

na0453a


Dimensional Data

NetworkAIR IR Module - Doors, panels, main circuit breaker removed


na0457a


Dimensional Data

NetworkAIR IR Front Plenum


NetworkAIR IR 19” Wing Plenum


NetworkAIR IR 23” Wing Plenum


na0820a

na0819a

na0821a


Piping & Mechanical Connections

Condensate line out —5/8" Main power in—1-1/4" Communication in/out—7/8" Water out—1-5/8" City water in—1/4" Water in—1-5/8" UPS power in

* Top piping shown. In a bottom piping scenario, reverse items 6 and 7.


Mechanical & Electrical Connections

Terminator UPS power supply Temperature/relative humidity probe Module 2 Humidifier water supply in User interface box 2 Condensate drain out BMS connection From chiller CAN connection To chiller User interface box 1 Main power lead Temperature/relative probe UPS power lead humidity connection Main power supply Module 1


Guide Specifications

PART 1 — PART 1 GENERAL

1.01 SUMMARY

A. The environmental control system shall be designed specifically for precision temperature and humidity control applications. It will automatically monitor and control heating, cooling, humidifying, dehumidifying, and filtering functions for the conditioned space. The system shall be built to the highest quality engineering and manufacturing standards, and shall be floor mounted and configured for ____(in-row) discharge of conditioned airflow, with draw-through air pattern, to provide uniform air distribution over the entire face of the coil.

1.02 DESIGN REQUIREMENTS

A. The system shall be as described in the following specification as manufactured by APC.

1 . Model: ____________________________.2 . Total cooling capacity: _______________ MBH (kW).3 . Sensible cooling capacity: ____________ MBH (kW).4 . Return air temperature: _______________ º F (º C) DB.5 . Return air temperature: _______________ º F (º C) WB.6 . Humidity: __________________________% RH.7 . Air quantity: _______________________ CFM (L/s).8 . External Static Pressure _______________inches (Pa).9 . Humidifier capacity: _________________ lbs/hr (kg/hr).

10 . Electrical supply: ________ V, _________ ph, 60 Hz.

1.03 SUBMITTALS

A. Submittals shall be provided with the proposal and shall include: capacity data, electrical data, physical data, electrical connection drawing, and piping connection drawing.

1.04 QUALITY ASSURANCE

A. The system shall be completely factory-tested prior to shipment. Testing shall include, but not be limited to: complete pressure and leak testing to ensure system integrity, “Hi-Pot” test, and controls calibration and settings. Each system shall ship with a completed test report to verify completion of factory testing procedure. The system shall be ETL/CETL, NTRL listed, MCA, and electrical system shall be UL Listed to UL 1995 and CSA 22.2 No. 236.

1.05 WARRANTY

A. System parts shall be warranted for a period of 12months from date of shipment from factory.



PART 2 — PART 2 PRODUCT

2.01 STANDARD COMPONENTS

A. CABINET CONSTRUCTION

1. Double Skin Panels: Exterior panels shall be double-wall 24 gauge metal with 24 gauge interior wall and insulated with 1.5 lb (0.68kg) density fiber insulation. Insulation shall be completely protected from the air stream by the panel wall or air blocks. Front exterior panel crown shall be 16 gauge. Front panels shall be powder coated and removable hinged with a locking handle. Exterior frame and panel color shall have color values: L = 74.50, a = -.53, b = +8.20. Main bezel color shall have color values: L = 13.44, a =.43, b = -2.63.

2 . Frame: The frame shall be constructed of 12 gauge bolt-together formed steel for maximum strength. All units shall have full service access from the front allowing systems to be placed side by side.

B. DIRECT DRIVE MOTOR/BLOWER ASSEMBLY

1. Blower: The unit shall be configured for draw-through air pattern, to provide uniform air flow over the entire face of the coil. Each cabinet shall include, double-inlet, double-width centrifugal blower(s) assemblies with forward-curving blades, dynamically and statically balanced as a completed assembly to a maximum vibration level of two mils on all planes. Blowers shall be mounted based on mass and frequency to minimize vibration and noise.

2 . Frequency Controlled Motor: A direct drive motor and frequency controller shall be used with each blower in the system to enhance user functionality. The frequency controller shall communicate with the master controller via RS485 MODBUS communication link. The unit shall be equipped with two blowers with a direct drive motor and a frequency controller for each motor.

C. ELECTRICAL PANEL

1. The electrical panel shall contain contactors, starters, overload protection devices, and input power disconnects. The panel shall be located in the front of the unit for available access.

D. PROGRAMMABLE INPUT/OUTPUT INTERFACE

1 . The unit shall provide field connection through a system programmable input/output module. Each interface module shall be programmable with outputs that can map from any system alarm through the microprocessor controller. Inputs shall be capable of mapping to outputs as a system alarm or custom alarm.



E. MASTER CONTROLLER

1. Monitoring and Configuration: The master display shall allow monitoring and configuration of the precision air conditioning unit through a menu-based control. Functions include status reporting, setup, and temp/humidity set points. Four LED report the operational status of the connected Precision air conditioning unit.

2 . Controls: The microprocessor shall come equipped with control keys allowing the user to navigate between menus, to select menu items, and to input alphanumeric information.

3 . Alarms: The microprocessor controller shall activate a visible and audible alarm in the occurrence of any of the following events:a. High control temperatureb. Low control temperaturec. High control humidityd. Low control humiditye. High filter differential pressuref. Return sensor failureg. High supply temperatureh. Low supply temperaturei. Loss or low airflowj. Supply sensor failurek. Water regulator actuator failure (model specific)l. Humidifier failure (model specific)m. Replace canister (model specific)n. Frequency Controller1 failure o. Frequency Controller2 failure (model specific)p. Air block interlock openq. Water detected (optional)r. Smoke detected (model specific)s. Condensate pump failure

4 . Logging: The microprocessor controller shall log and display the 30 most recent alarms. Each alarm log shall contain time/date stamp as well as operating conditions at the time of occurrence. Controller shall display the run time hours for major components (heaters, humidifier, blower motors).



F. CROSS CIRCUITED COOLING COIL/94VO THERMAL CONDENSATE PAN

1. The cooling coil shall use aluminum fins and rifle-bored copper tubes. Coil end-supports shall be galvanized steel.

2 . The condensate pan shall have an overflow protection pipe. The overflow piping shall extend from the condensate pan to the base pan of the unit and allow for optional field piping such as a gravity drain.

G. 2-WAY/3-WAY MODULATING VALVE

1. Chilled water systems shall utilize a two-way or three-way valve to regulate the amount of chilled water to the cooling coil to maintain desired conditions. The standard valve pressure rating shall be 400 psi (2758 kPa).

H. SCR CONTROLLED ELECTRIC REHEAT

1. Reheat elements shall be low watt density, wired for three-phase, loaded equally on all three phases and shall be electrically and thermally protected by both automatic and manual reset thermal cutouts. Reheat capacity shall be ___________ MBH, ___________ kW, SCR controlled. Reheat coils shall be stainless steel, fin tubular construction.

I. STEAM GENERATING HUMIDIFIER

1. Humidifier shall be able to modulate capacity. The humidifier shall be self-contained, steam-generating type, factory piped and wired, with disposable cylinder and automatic solid-state control circuit. The humidifier shall require little or no scheduled maintenance. Humidifier canisters shall be replaceable and/or cleanable or disposable. The humidifier controller shall communicate directly to the microprocessor controller and provide complete status and control at the operator interface.

J. HIGH LIFT, DUAL FLOAT CONDENSATE PUMP

1. Factory installed and wired condensate pump shall pump 60gal/h (0.06 L/s) at 60ft (18.3 m) head.

K. SMOKE DETECTOR

1. A smoke detector shall be factory-installed in the return air to sense concentrations of smoke and send a signal to the main controller shutting down the unit and activating a visual and audible alarm.

L. 30% ASHRAE 52.1 FILTERS

1. The air filters shall be 30% efficient per ASHRAE Standard 52.1-92, UL Class 2. The full 4” (102 mm) deep, pleated filters shall be replaceable from the front of the unit.



M. SELECTABLE UP OR DOWN PIPING KIT

1. Up: Piping kit shall ship loose for connecting to internal stubs that turn the piping 90 degrees upward out the back of the system.

2 . Down: Piping kit shall ship loose for connecting to internal stubs that turn the piping 90 degrees downward out the back of the system. Requires access to a raised floor.

N. DISCHARGE PLENUM

1. Front discharge plenum shall consist of a perforated metal face to discharge air towards the front of the cooling unit. The plenum shall be a low profile design such that it’s height shall not exceed that of adjacent IT enclosures top mounted with cable management troughs. Plenum extensions shall be available to cantilever over adjacent 19” or 23” IT enclosures if it is desired to reduce discharge velocity and broadband noise emissions.

O. REAR DOOR KIT

1. 20 gauge rear doors and system accessories, including door mounting frames and front side toe kick, shall ship loose to maintain system width within access limits of standard door frames.

P. TWIST-LOCK CRITICAL POWER FEED WHIP

1. A power whip with twist-lock receptacle shall be provided for critical power input. Twist-lock whip shall allow easy, seamless connection to APC power distribution equipment when part of a total InfrastruXure solution.

Q. REMOTE TEMPERATURE/HUMIDITY SENSOR

1. A remote temperature/humidity sensor shall ship loose to provide control input.

R. DUAL CRITICAL/NON-CRITICAL POWER INPUTS

1. The system shall be optionally configured with two power feeds for critical and non-critical operation. Power inputs shall allow a level of system fault tolerance and uninterruptible cooling to exist, depending on building infrastructure design. The inputs may be bridged if single input operation is desired.



2.02 OPTIONAL COMPONENTS

A. ADDITIONAL PROGRAMMABLE INPUT/OUTPUT INTERFACE MODULES

1. Each system shall be equipped with up to 3 additional discrete input/output modules for a total of 16 inputs/outputs. Each interface module shall be programmable with outputs that can map from any system alarm through the microprocessor controller. Inputs shall be capable of mapping to outputs as a system alarm or custom alarm.

B. SPOT WATER DETECTOR(S)

1 . A water detector shall be factory-wired and shipped in the bottom of the unit to sense water and send a signal to the master control giving the operator possible alarm indications options for shutdown. The water detector shall be provided with 15 ft (5 m) of wire.

C. CABLE LEAK DETECTOR

1. A leak detection sensing cable shall be shipped loose with the unit. If water or other conductive liquids contact the cable anywhere along its length, the main controller visually and audibly annunciates the leak.

2 . The detector shall be provided with 40ft (12 m) of cable. Cable may be cascaded up to 1000ft (300 m).

D. AIR DISCHARGE DIFFUSERS

1. Plenum extensions to the left and right of the main plenum shall be shipped loose to reduce noise and increase distribution.

E. CIRCUIT SETTER READ-OUT

1. Shall provide correlation of an observed differential pressure with a volumetric flow rate of chilled water for installation and service assistance.

F. BAY KIT IR/NETSHELTER VX

1. 16 gauge metal baying kits shall be provided to rigidly join the cooling unit to adjacent IT enclosures. Baying kits shall be constructed to impede airflow between the components being joined to prevent misalignment when installing equipment in the IT enclosures.

G. FLOW SWITCH

1. In-line paddle type flow switch shall be placed in pipe during installation. Alarm or other control function shall occur should a loss of chilled water flow be experienced.

H. SIDE PANEL KIT

1. 20 gauge metal side panels shall be used for covering right and left sides of the system when not bayed to APC Netshelter enclosures.



PART 3 — PART 3 INDIVIDUAL SYSTEMS

3.01 CHILLED WATER

A. The unit shall be piped in accordance with the highest commercial quality procedures. All pipe shall be copper, type “L”, insulated. All pipe forming shall be tool bent with proper bend radii to prevent tube flattening in the curve. The chilled water piping shall be insulated with closed cell neoprene thermal insulation. The chilled water flow shall be controlled by a 2-way or 3-way valve with a 24 VDC motor. All piping connections shall be made at the rear of the unit for top or bottom accessibility.


Guidelines for Installation

The IR provides reliable, accurate temperature and humidity control of computer rooms, laboratories, and other environments that require close tolerance control. The unit incorporates the latest system design innovations to provide you with optimum efficiency, reliability, and accuracy of control.

The IR system will provide years of trouble-free service, when installed and maintained by technically qualified personnel.

Room preparation During the design of the room, consideration should be given to the following factors: ease of entry for the system, floor-loading factors, and accessibility of piping and wiring.

The room must be sealed with a vapor barrier to minimize migration of moisture. Polyethylene film (plastic sheeting) is a good vapor barrier for ceiling and wall applications. Rubber- or plastic-based paints should be applied to concrete floors and walls. The room should be thoroughly insulated to minimize thermal loads and make-up air (if required) should be preconditioned to reduce additional temperature, filtration, and moisture loads.

Service access At least 24" (610 mm) of clear space must be left in front of the unit for routine service (filters, humidifier). We strongly recommend approximately 32" (813 mm) clearance in front of the unit.

Receiving the unit Your IR unit has been completely tested and inspected prior to shipment. To ensure that you have received the unit in excellent condition, perform a careful inspection of the crating and the unit immediately upon receipt. Verify that all parts ordered were received as specified and that the unit is the correct size and voltage necessary to fulfill your environmental control needs. Report any damage discovered to the freight carrier. If necessary, contact the APC field service department for help in repairing or replacing damaged parts. While APC is not responsible for damage incurred in transit, we want to make sure that you have no undue delays in your system start-up.

Rigging The unit is manufactured with a formed steel frame for maximum strength and unit integrity. However, as with all electrical and mechanical equipment, you must take care with proper rigging of your unit.

When using a forklift to move the unit, use the shipping skid to protect the bottom of the unit. When using chains, cables or rope to lift the unit, use spreader bars to prevent damage to the finished panel.


Guidelines for Installation

Humidifier connections The humidifier inlet connection point is provided with the equipment. A 1/4" (6.4mm) compression connection is supplied with the unit.

Condensate drain Condensate from the evaporator pan is collected and discharged by the condensate pump to a 7/8" (22.2mm) fitting for field connection.

Water supply to humidifier 1. The humidifier fill valve orifice is sized for supply water pressure from 15 PSIG (103.4 kPa) to 150 PSIG (1034 kPa).

2. For cases above 150 PSIG (1034 kPa), install a pressure-reducing valve in the water feed line to the unit.

3. With extremely dirty or muddy water sources, proper filtration is required on the unit’s incoming water line.

4. DO NOT use softened water with the humidifier. Softened water is too conductive.

5. DO NOT use completely demineralized water with the humidifier. The minerals allow the electrode principle to work.

6. DO NOT use a hot water source. Doing so will cause deposits that will eventually block the fill valve orifices.

7. Water supplies with high conductivity (above 800 mW) must be preconditioned for proper operation and longevity of the humidi-fier.

Note: Because of an ongoing program dedicated to product improvement, specifications are subject to revisions without notice. APC assumes no responsibility, and disclaims all liability for damages resulting from use of this information or for any errors or omissions.


APC Worldwide Customer Support

Customer support for this or any other APC product is available at no charge in any of the following ways:• Visit the APC Web site to find answers to frequently asked questions (FAQs), to access documents

in the APC Knowledge Base, and to submit customer support requests.– www.apc.com (Corporate Headquarters)

Connect to localized APC Web sites for specific countries, each of which provides customer support information.

– www.apc.com/support/Global support with FAQs, knowledge base, and e-support.

• Contact an APC Customer Support center by telephone or e-mail.– Regional centers:

– Local, country-specific centers: go to www.apc.com/support/contact for contact information.

Contact the APC representative or other distributor from whom you purchased your APC product for information on how to obtain local customer support.

APC headquarters U.S.,Canada (1)(800)800-4272 (toll free)

Latin America (1)(401)789-5735 (USA)

Europe, Middle East, Africa (353)(91)702020 (Ireland)

Asia Pacific (61) 2 9955 9366 (Australia)

Entire contents copyright © 2005 American Power Conversion. All rights reserved. Reproduction in whole or in part without permission is prohibited. APC, the APC logo, and

NetworkAIR are trademarks of American Power Conversion Corporation and may be registered in some jurisdictions. All other trademarks, product names, and corporate names

are the property of their respective owners and are used for informational purposes only.

990-1919C-EN 02/2005

®

http://www.apc.com

http://www.apcc.com/support

http://www.apc.com/support/contact

tm computer room air-conditioning—60 hz · pdf file• 2-way/3-way modulating valve...

Documents