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Installation

InRow™ RA

ACRA100ACRA101

This manual is available in English on the enclosed CD.

Dieses Handbuch ist in Deutsch auf der beiliegenden CD-ROM verfügbar.

Deze handleiding staat in het Nederlands op de bijgevoegde cd.

Este manual está disponible en español en el CD-ROM adjunto.

Ce manuel est disponible en français sur le CD-ROM ci-inclus.

Questo manuale è disponibile in italiano nel CD-ROM allegato.

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American Power Conversion Legal DisclaimerThe information presented in this manual is not warranted by the American Power Conversion Corporation to be authoritative, error free, or complete. This publication is not meant to be a substitute for a detailed operational and site specific development plan. Therefore, American Power Conversion Corporation assumes no liability for damages, violations of codes, improper installation, system failures, or any other problems that could arise based on the use of this Publication.

The information contained in this Publication is provided as is and has been prepared solely for the purpose of evaluating data center design and construction. This Publication has been compiled in good faith by American Power Conversion Corporation. However, no representation is made or warranty given, either express or implied, as to the completeness or accuracy of the information this Publication contains.

IN NO EVENT SHALL AMERICAN POWER CONVERSION CORPORATION, OR ANY PARENT, AFFILIATE OR SUBSIDIARY COMPANY OF AMERICAN POWER CONVERSION CORPORATION OR THEIR RESPECTIVE OFFICERS, DIRECTORS, OR EMPLOYEES BE LIABLE FOR ANY DIRECT, INDIRECT, CONSEQUENTIAL, PUNITIVE, SPECIAL, OR INCIDENTAL DAMAGES (INCLUDING, WITHOUT LIMITATION, DAMAGES FOR LOSS OF BUSINESS, CONTRACT, REVENUE, DATA, INFORMATION, OR BUSINESS INTERRUPTION) RESULTING FROM, ARISING OUT, OR IN CONNECTION WITH THE USE OF, OR INABILITY TO USE THIS PUBLICATION OR THE CONTENT, EVEN IF AMERICAN POWER CONVERSION CORPORATION HAS BEEN EXPRESSLY ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. AMERICAN POWER CONVERSION CORPORATION RESERVES THE RIGHT TO MAKE CHANGES OR UPDATES WITH RESPECT TO OR IN THE CONTENT OF THE PUBLICATION OR THE FORMAT THEREOF AT ANY TIME WITHOUT NOTICE.

Copyright, intellectual, and all other proprietary rights in the content (including but not limited to software, audio, video, text, and photographs) rests with American Power Conversion Corporation or its licensors. All rights in the content not expressly granted herein are reserved. No rights of any kind are licensed or assigned or shall otherwise pass to persons accessing this information.

This Publication shall not be for resale in whole or in part.

Contents

InRow RA Installation i

General Information........................................................ 1Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Save these instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1Intended users . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1General symbols that may be used in this manual . . . . . . . . . . . . . 1Cross-reference symbol used in this manual . . . . . . . . . . . . . . . . . 1

Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Inspecting the Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Storing the Equipment Before Installation . . . . . . . . . . . . . . . . . . . . 3

Moving the Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3Moving the equipment to its final location . . . . . . . . . . . . . . . . . . . 3

Model Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Component Identification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5Inventory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5Exterior components (front view) . . . . . . . . . . . . . . . . . . . . . . . . . . . 6Interior components (rear view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7Electrical panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8Top piping and power access locations . . . . . . . . . . . . . . . . . . . . . . 9Bottom power access location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Refrigeration Piping Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Connections Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11Power connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11Piping connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Room Preparation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12Air distribution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12Incoming power supply requirements . . . . . . . . . . . . . . . . . . . . . . 12

Weights and Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

InRow RA Installationii

Installation...................................................................... 14Removing Doors and Panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Front and rear door removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15Side panel removal and installation . . . . . . . . . . . . . . . . . . . . . . . . 15

Positioning the Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16Service access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Leveling the Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Joining the Equipment to Enclosures . . . . . . . . . . . . . . . . . . . . . . . 18Front joining . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18Rear joining to SX enclosures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19Rear joining to VX and VS enclosures . . . . . . . . . . . . . . . . . . . . . . 19

Mechanical Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20Refrigerant Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20Piping requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20ASHRAE standards for equivalent piping length . . . . . . . . . . . . . . 20Piping connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21Flexible piping kits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23Piping Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24Insulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Electrical Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26Bottom power connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Control Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28A-Link connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28User interface connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29Rack temperature sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30Proper hose installation guidelines . . . . . . . . . . . . . . . . . . . . . . . . . 31

Adding and Removing UNRWA RA Units. . . . . . . . . . . . . . . . . . . . . 32Remove an UNRWA RA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32Add an UNRWA RA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32Refrigerant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Specifications ................................................................ 34

1InRow RA Installation

General Information

OverviewSave these instructions

This manual contains important instructions that must be followed during the installation of this equipment.

Intended users

This manual is intended for American Power Conversion (APC) authorized personnel. It provides component specifications and instructions for installing and commissioning the equipment.

General symbols that may be used in this manual

Discard indicated part or assembly.

Do not discard indicated part or assembly.

Cross-reference symbol used in this manual

See another section of this document or another document for more information on this subject.

InRow RA Installation2

SafetyRead and adhere to the following important safety considerations when working with this unit.

DANGERHAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH

Turn off all power supplying this equipment before working on the equipment. All electrical work must be performed by licensed electricians. Practice lockout/tagout procedures. Do not wear jewelry when working with electrical equipment.

Failure to follow these instructions will result in death or serious injury.

WARNINGHAZARD FROM MOVING PARTS

Keep hands, clothing, and jewelry away from moving parts. Check the equipment for foreign objects before closing the doors and starting the equipment.

Failure to follow these instructions can result in death, serious injury, or equipment damage.

WARNINGDAMAGE TO EQUIPMENT OR PERSONNEL

The equipment is heavy and can easily be tipped. For safety purposes, adequate personnel must be present when moving this equipment.

Failure to follow these instructions can result in death, injury, or equipment damage.

CAUTIONHAZARD TO EQUIPMENT OR PERSONNEL

All work must be performed by American Power Conversion (APC™) by Schneider Electric authorized personnel.

Failure to follow these instructions can result in injury or equipment damage.

CAUTIONHAZARD TO EQUIPMENT

Circuit boards contained within this unit are sensitive to static electricity. Use one or more electrostatic-discharge device while handling the boards.

Failure to follow these instructions can result in equipment damage.


Inspecting the EquipmentYour American Power Conversion (APC™) InRowTM RA cooling module has been tested and inspected for quality assurance before shipment from APC. Carefully inspect both the exterior and interior of the equipment immediately upon receipt to ensure that the cooling module has not been damaged during transit.

Verify that all parts ordered were received as specified and that the cooling module is the correct type, size, and voltage.

Filing a claim. If damage is identified on receipt of the cooling module, note the damage on the bill of lading and file a damage claim with the shipping company. Contact APC Worldwide Customer Support at www.apc.com/support for information about filing a claim with the shipping company. The shipping claim must be filed at the receiving end of the delivery.

Note: In case of shipping damage, do not operate the equipment. Keep all packaging for inspection by the shipping company.

Storing the Equipment Before Installation

If the equipment will not be installed immediately, store it in a safe place, protected from the weather.

Moving the EquipmentMoving the equipment to its final location

The recommended tools for moving the equipment while it is still on the pallet include the following:

CAUTIONWEATHER DAMAGE

Leaving the equipment uncovered and exposed to possible damage from the environment will void the factory warranty.


CAUTIONHEAVY EQUIPMENT - TIP HAZARD

• Ensure the lifting equipment has sufficient capacity for the load. • The equipment can be rolled to its final location using its casters if the floor is

smooth and clean. Be sure two people move the equipment.

Failure to follow these instructions can result in injury or equipment damage.

Pallet jack Forklift


Model IdentificationThe model number can be found on the outside of the shipping crate and on the nameplate located on the rear of the equipment as shown. Use the table below to verify that the equipment is the correct type and voltage.

Model Voltage

ACRA100 100-120/1~50/60 HzACRA101 200-240/1~50/60 Hz

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Nameplate

Front

Rear


Component IdentificationInventory

Do not discard the installation kits.

Item Description Qty Item Description Qty

� InRow RA 1 � Return vapor line 1

� Rack inlet temperature sensor 1 � Supply liquid line 1

� Phillips head screws 4 Netshelter SX bolt-down kit 1

� Cable clips 3 ! Lock washers 4

� Power cord retaining clips 2 " Bolts 4

� Power cords 2 # Brackets 4

� Key 1 $ Washers 4

� Teflon rings, 1-3/4 in 3 % Nylon push mounts 4

� Teflon rings, 1-1/4 in 3 & Wire ties 3

� Insulation (supply and return piping) 2 ' Insulation (pipe clamps) 2

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Exterior components (front view)

Item Description Item Description

� CoolView display � Removable rear door� Removable front door � Upper side panel latch� Front casters (swiveling) � Supply liquid connection� Rear casters (non-swiveling) � Return vapor connection� Adjustable leveling foot � Secondary power connection � Removable lower side panel Temperature sensor and low voltage

cable pass-through� Removable upper side panel ! Primary power connection

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Interior components (rear view)


� Electronic expansion valve (EEV) � Refrigerant vapor return� Pressure sensor � Evaporator pressure regulator (EPR)� Solenoid valve � Cooling coil� Service port � Fan� Refrigerant liquid supply

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NOTE: Some parts, frame and side structure have been removed from this illustration for clarity.


Electrical panel


� Remote temperature sensor port � Modbus RS-485 port

� Configuration RS-232 port � Customer LAN connection

� USB type service port � Network Management Card reset button

� Remote shutdown input � Group Communication A-Link port

� Control RS-485 port

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Top piping and power access locations

Bottom power access location

Item Description� Temperature sensor and low

voltage cable pass through

� Primary electrical input

� Secondary electrical input

� Return vapor line

� Supply liquid line

Item Description

� Temperature sensor and low voltage cable pass through

� Primary electrical input

� Low voltage wiring input

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59 (2.3)124 (4.9)

57 (2.2)

133 (5.3) 130 (5.1)

80 (3.2)

141 (5.6)

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158(6.2)

164(6.5)


Refrigeration Piping Diagram


� Fan � Return air temperature sensors

� Micro-channel coil � Solenoid valve

� Return vapor temperature sensor � Refrigerant liquid pressure sensor

� Refrigerant vapor pressure sensor � Supply liquid temperature sensor

� Evaporator pressure regulator (EPR) � Electronic expansion valve (EEV)

� Service port Remote rack inlet temperature sensor

� Threaded ring seal adapter ! Supply air temperature sensors

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1 1/8'’ ACR

7/8'’ ACR

Supply airReturn air

Refrigerant liquid supply

Refrigerant vaporreturn


Connections OverviewPiping connections to and from the equipment are made through the top of the cooling module. Once the corresponding connectors are sweated or brazed into place, the cooling module can be disconnected without soldering, welding, or gluing. See the following tables for information about the sizes and types of connectors. Power connections can be made through the top or bottom of the cooling module. See “Bottom power connections” on page 27 for more information.

Make electrical connections in accordance with all local and national codes.

Power connections

Piping connections




Model VoltageFrequency

(Hz) MCA MOP FLA

ACRA100 100-120V 50/60 N/A 20A 10@120V

ACRA101 200-240V 50/60 N/A 20A 4@240V

Above data is based on maximum operating conditions.Consult local and national codes for wire size, conduit requirements and overload protection.MCA - Minimum Circuit AmpacityMOP - Maximum Overcurrent ProtectionFLA - Full Load Amps

Connection Type Size Torque

Supply liquid line Threaded ring seal * 1 1/4-in OD 90 N-m (66.4 lb-ft)

Return vapor line Threaded ring seal * 1 3/4 in OD 110 N-m (81.1 lb-ft)

* Use the provided Teflon® gasket to prevent leakage.


Room PreparationThe design of the data center should have considered ease of entry for the equipment, floor loading factors, and accessibility to piping and wiring.

The room should be sealed with a vapor barrier to minimize moisture infiltration. (Polyethylene film is recommended for ceiling and wall applications.) Rubber- or plastic-based paints should have been applied to concrete walls and floors.

Ensure the room is insulated to minimize the influence of exterior heat loads. The minimum required amount of fresh air should be used for make up to comply with local and national codes and regulations. Fresh air imposes extreme load variation on the cooling equipment from summer to winter and causes increased operating costs.

Ensure the data center has sufficient interior volume to allow personnel to respond to any potential exposure to refrigerant (approximately 16 pounds per 1,000 ft3 in accordance with ASHRAE Standard 15-2001).

The equipment is designed as a sensible cooling module for in-row use in data centers. The equipment does not have humidification or dehumidification control. Room humidity must be within acceptable operating conditions before starting equipment.

Air distribution

The equipment distributes air in a back-to-front discharge pattern, removing hot air from a hot aisle and discharging cooled air into a cold aisle.

Note: The equipment is designed for free air discharge or for use with the Rack Air Containment System or Hot Aisle Containment System. The equipment is not intended to be connected to a duct system.

Incoming power supply requirements





Weights and Dimensions

Dimensions are shown in mm (in).

Model Packed weight Unpacked weight

ACRA100 194 kg (428 lb) 152 kg (335 lb)ACRA101 202 kg (446 lb) 160 kg (353 lb)

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InstallationRemoving Doors and Panels

WARNINGUNEXPECTED BEHAVIOR OF APPLICATION

• Lock all doors and side panels during normal operation. • Use caution when removing the front and rear doors while the equipment is

operating.

Failure to follow these instructions can result in death, serious injury, or equipment damage.

CAUTIONPOSSIBLE EQUIPMENT DAMAGE

Leaning the doors against a wall with the latches facing the wall can deform the latches and prevent them from working properly.


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Front and rear door removal

1. Using the key (see “Inventory” on page 5) to unlock the lock on the top of the door.

2. Press down on the two latches on top of the door.

3. Tilt the door out and lift up from the cooling module.

4. The back door is removed similarly.

Side panel removal and installation

Removal Installation

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Positioning the EquipmentService access

A minimum 914 mm (36 in) of clear floor space in front of and behind the equipment is recommended for service. All required periodic maintenance can be performed from the front or rear of the equipment.

The unit can be moved by rolling it on its casters out of the row for service. A minimum of 1200 mm (48 in) of clear floor space in front of or behind the equipment is required to remove the equipment when placed in row and adjoined with other rack enclosures.

Note: Check local and national codes and regulations for additional service access requirements.

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Service access when equipment is inside the row

Free space needed to move equipment outside the row

Dimensions are shown in mm (in).


Leveling the Equipment

1. Remove the front and rear doors. See “Removing Doors and Panels” on page 14.

2. For each leveling foot, insert a Phillips PH2 or slotted screwdriver into the screw above the leveling foot. Turn the screw clockwise to extend the leveling foot until it makes firm contact with the floor.

3. Re-install the front and rear doors.

Note: Use a 13-mm open-ended wrench to level the equipment without removing the doors.

WARNINGDAMAGE TO EQUIPMENT OR PERSONNEL

The equipment is heavy and can easily be tipped. For safety purposes, adequate personnel must be present when moving this equipment.

Failure to follow these instructions can result in death, injury, or equipment damage.

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Joining the Equipment to EnclosuresRemove the doors from the equipment before attempting to connect the joining brackets.

Front joining Four joining brackets are installed on the front of the cooling module. Observe the number pattern on the joining bracket. If enclosures are joined together on 24 inch centers, there will be a gap between them. Order optional APC trim pieces to cover the gap. The trim pieces snap into place without tools and can be installed after the units are joined together.

• Connection 1 connects the InRow RA cooling module to another RA cooling module.

• Connection 2 connects the InRow RA cooling module to an RA cooling module when enclosures are joined together on 24 inch centers. Trim pieces (AR7600) are needed to cover the gap.

• Connection 3 connects the InRow RA cooling module to a rack when enclosures are joined together on 24 inch centers. Trim pieces (AR7600) are needed to cover the gap.

• Connection 4 connects the InRow RA cooling module to an SX rack (or a 600 mm PDU).

• Use APC part number 870-15061_Rev02 (included with the MPDU) to connect the InRow RA to a 300 mm wide Modular Power Distribution Unit.

23

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Rear joining to SX enclosuresThe equipment comes with two joining brackets for the rear:

1. Remove the rear doors. See “Removing Doors and Panels” on page 14.2. Locate the joining brackets. Rotate each bracket 90° toward the adjoining enclosure so the

bracket is parallel to the floor and install using the screws provided with the enclosure.

For more information, see the Unpacking, Installation, and Customization manual for the NetShelter™ SX Enclosure.

Rear joining to VX and VS enclosures

For information on joining the equipment to VX and VS enclosures, see the installation sheet NetShelter SX or VS External Joining Kit—AR7601, AR7602.

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Mechanical ConnectionsRefrigerant Piping

The equipment must be connected to an RDU. Ceiling-suspended refrigerant piping should be present. Make connections to the InRow RA cooling modules using the refrigerant distribution unit (RDU), piping kits, and flexible hoses.

See the RDU Installation manual for more information.

Calculate an equivalent length based on the actual linear length of the run, including valves and fittings.Isolate piping from structural surfaces using vibration clamps.

Piping requirements

Install all refrigerant lines in accordance with applicable industry guidelines as well as local and national codes and regulations.

The maximum equivalent length for refrigerant piping between the RDU and the most distant cooling module is 24.4 m (80 ft). Use the table below to calculate the equivalent length of fittings to ensure that maximum equivalent length is not exceeded.

Connection lines between the distribution piping and cooling module are 3/4 in nominal (7/8 in ACR tubing size) for the refrigerant liquid supply and 1 in nominal (1-1/8 in ACR tubing size) for the refrigerant vapor return. Field fabricated connections between the cooling module and distribution piping may be a maximum of 3.05 m (10 ft) equivalent length. This equivalent length must be included in total equivalent length between the cooling module and RDU.

Note: 1. If flex hose is used, the total equivalent length is reduced to 19.8 m (65 ft), NOT including the flex hose lengths. Ensure your installation conforms to these requirements by calculating the equivalent length based on the actual linear length of the run, plus the equivalent length of valves and fittings. Note: 2. All fittings should be long-radius to minimize pressure drop.Note: 3. Install all piping in accordance with applicable industry guidelines as well as local and national codes and regulations.

ASHRAE standards for equivalent piping length

Nominal Pipe Size

Type of fitting - equivalent length of pipe in m (ft)

Usage

Acr Tubing

Size 90° STD90° Long Radius 90° Street 45° STD 45°Street 180° STD

3/4 in 7/8 in 0.6 (2) 0.5 (1.4) 1.0 (3.2) 0.3 (0.9) 0.5 (1.6) 1.0 (3.2) InRow RA supply1 in 1-1/8 in 0.8 (2.6) 0.5 (1.7) 1.2 (4.1) 0.4 (1.3) 0.6 (2.1) 1.2 (4.1) InRow RA return

1-1/2 in 1-5/8 in 1.4 (4.0) 0.8 (2.6) 1.9 (6.3) 0.6 (2.1) 1.0 (3.4) 1.9 (6.3) Header supply3 in 3-1/8 in 2.3 (7.5) 1.5 (5.0) 3.7 (12.0) 1.2 (4.0) 2.0 (6.4) 3.7 (12.0) Header return

Note: R/D is approximately equal to 1 except for 90° long radius which is approximately equal to 1.5.Note: Source: 2006 ASHRAE Handbook-Refrigeration, 2.16 Table 16


Piping connection

Note: 1. The InRow RA cooling module has been shipped pressurized with nitrogen. Remove this charge before proceeding. Note: 2. Consult the Pumped Refrigerant System Refrigerant Distribution Unit (RDU) Operation and Maintenance manual for system evacuation instructions.

1. Remove the rear door.2. Remove the caps on the service ports and release the nitrogen charge from the system at the

service ports �.

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Insulation

Insulation


3. Remove the plugs and Teflon rings from the liquid and vapor connections4. Remove the screws securing the pipe clamps at the top of the cooling module.5. If the pipe insulation is seamless, apply it over the pipes before you install the pipes in the unit.

Otherwise, the insulation can be applied after the pipes are installed.6. If supplied insulation is seamless, install it to the pipes at this time. If the supplied insulation has

a seam, you can install it after the pipes are installed in the unit.7. Position the liquid pipe through the top and secure with one of the pipe clamps.8. Install a new o-ring (from the shipped loose kit) and connect the pipe to the union.

Tighten to 90 Nm (66.4 ft-lbs). See “Inventory” on page 5 to see contents of shipped loose parts kit.

9. Install the return pipe using the same method. Tighten to 110 Nm (81.1 ft-lbs).10.Install insulation to the supply and return lines and secure with adhesive tape.11. Install insulation over the pipe clamps. See “Insulation” on page 25.12.Re-install the rear door.

See the RDU Installation manual for more piping connection information.

Note: When brazing field-installed copper refrigeration lines, use a nitrogen purge to minimize contamination of the system during the brazing process.


Flexible piping kits

Flexible piping may be used to attach the InRow RA to the RDU piping but is not required. Hard piping may be used but is not provided. Flexible piping kits are available in three pipe lengths:

Kit Number Length - mm (ft)ACAC21007 914 (3)ACAC21009 1372 (4.5)ACAC21008 1828 (6)

Item Description Qty Item Description Qty

� Teflon ring, 1.25 in 1 � Hose, 1.25 in OD 1

� Hose, 1 in OD 1 � Teflon ring, 1.75 in 1

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Piping Connections

• Use Teflon rings on connections to the supply and return lines.• Connect the supply pipe to the refrigerant liquid supply connection on top of the InRow RA.

Tighten to 90 Nm (66.4 ft-lbs).• Connect the return pipe to the refrigerant vapor return connection on top of the InRow RA.

Tighten to 110 Nm (81.1 ft-lbs). • Braze connections if hard piping (not provided) is used.

Optional Hard Piping Kit ACAC21010 contains supply and return threaded ring seal connections and Teflon rings.

• Interconnecting piping and insulation is not provided.

Note: 1. The flexible piping kits are recommended but not required.Note: 2. Use new Teflon rings (not provided) on each end of the piping.Note: 3. All piping must be insulated (not provided).

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Insulation

Use only approved insulation (closed cell elastomeric insulation with sealing seams). Insulation should be 12.7 mm (1/2 in) wall thickness. All horizontal insulation sections must be installed with seams facing up. Each section of insulation must be glued to the adjacent section. Any insulation sections that must be fitted around piping support clamps (other than supplied clamps) must be glued together to prevent condensation.

Insulation adhesive. Use a low-VOC (Volatile Organic Compounds), black contact adhesive specifically designed for joining seams in pipe insulation. Use a black colored adhesive to achieve a neater finished insulation. Apply a thin coat of adhesive to both surfaces. Allow the adhesive to dry but still be tacky to the touch. Position the pieces accurately when contact is made. Apply moderate pressure over the entire area to ensure the seam is sealed.

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Electrical Connections The electrical connections required in the field are:

• Communication (A-Link)• Remote rack temperature sensor• Two power feeds to the InRow RA (single phase plus ground)

All electrical connections must be in accordance with applicable industry guidelines as well as national and local codes and regulations.

See the equipment nameplate for voltage and current requirements.Make all low-voltage connections, including data and control connections, with properly insulated wires. Insulation of low-voltage wiring must be rated for at least the voltage of any adjacent wiring.

Top power connection

1. Connect the two power cords (included) to the top power sockets.2. Secure the power cords using the two retainers (included) if local regulations require.

Note: In Japan, use only PSE approved power supply cord, APC P/N 960-0098C.




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Bottom power connections

The junction box can be relocated to the bottom of the InRow RA to accommodate the application of under-floor electrical connections.

1. Remove the screw securing the junction box to the top of the frame and remove the junction box. Clip the wire ties securing the wire harness from the junction box to the cabinet.

2. Remove the screw and bottom cover plate. Save for installing on the top.3. Attach the saved bottom plate to the top of the cooling module. 4. Remove the screw securing the cover to the junction box. Remove the cover.5. Turn the junction box over and attach to the bottom of the cooling module. Re-install the junction

box cover. Secure the wire harness with new wire ties.

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Control ConnectionsNote: 1. Wire all low voltage input and output connections as Class 2 circuits.Note: 2. Even if InRow RA cooling modules are piped to different RDU units, they may still be connected together.

A-Link connections

The A-Link bus connection allows a group of up to twenty-two cooling modules to communicate with one another and the RDU.

To enable the cooling modules to work as a group, link them using CAT-5 cables with RJ-45 connectors (not supplied). The A-Link bus must be terminated at the first and last unit installed in the group. For example, the RDU is the first unit and the InRow RA (or another RDU) farthest from the RDU is the last unit. A terminator (150 Ohm, 1/4 W) is supplied with each cooling module. The terminator is inserted in the A-Link out port of the final component.

The maximum wire length for the entire group may not exceed 300 m (1,000 ft).

CAUTIONEQUIPMENT DAMAGE

Devices connected on the A-Link ports are to use a standard pinout (1-1, 2-2, 3-3, 4-4, 5-5, 6-6, 7-7, 8-8) CAT5 cable only, otherwise damage to electronics will occur.


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RDU

InRow RA InRow RA InRow RA

Terminator


User interface connections

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Item Description

� 24 VDC (bias)

� 12 VDC (bias)

� Return (bias)

� NO (normally open contact)

COM (common contact)

! NC (normally closed contact)

" USB

# RS-232 console port

$ Remote temperature sensor

Item Description

� A-Link ports:Pin 1 = High Pin 2 = Low Pins 3, 6 + Perf Power Pins 4, 5 = Ground

� Reset button

� Network port

� Shield / ground

� A - = True

� B + = True

� Shutdown -

� Shutdown +


Rack temperature sensor

The rack temperature sensor monitors and controls the equipment airflow and ensures an adequate supply of cooling air to the server racks in the data center.

Installing the rack temperature sensor

Note: Rack temperature sensor installation is not required if the equipment operates in Rack Air Containment System (RACS) or Hot Aisle Containment System (HACS) mode. The InRow configuration requires temperature sensor installation.

1. Insert the rack temperature sensor connector in the temperature sensor port at the user interface. See “User interface connections” on page 29.

a. For a top installation, push the rack temperature sensor through the port located at the top of the equipment.

b. For a bottom installation, route the sensor through the access hole in the bottom of the equipment.

2. Route the sensor through either the top or the bottom of the adjacent server rack.

3. Secure the temperature sensor cable to the front door of the adjacent server rack at multiple locations using the provided wire clips as shown.

Install the sensor where lack of sufficient cooling air is most likely. The optimum position of the rack temperature sensor will vary from installation to installation, but must be located in front of fan cooled equipment to allow proper readings.Servers most likely to have insufficient or inadequately cooled air due to the recirculation of hot air from the hot aisle include:

a. Servers positioned at the top of a rack.b. Servers positioned at any height in the last rack at an open end of a row.c. Servers positioned behind flow-impairing obstacles such as building elements.d. Servers positioned in a bank of high-density racks.e. Servers positioned next to racks with Air Removal Units (ARU).f. Servers positioned very far from the equipment.g. Servers positioned very close to the equipment.

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Wire clip

Temperature sensor


Proper hose installation guidelines

• Ensure all hoses are connected as shown in the Correct column.

• Install hoses so all bends are in the same plane.• Install hoses so flexing takes place in the same

plane as the bends.• Observe the minimum static centerline bend

radius:– 1 in diameter pipes - of 229 mm (9 in)– 1.25 in diameter pipes - 254 mm (10 in)

• Provide dielectric coupling where applicable to protect dissimilar metals.

• Additional field-supplied components may be required for proper hose installation.

• After installation, insulate hoses (materials not provided by APC). Follow insulation manufacturer recommendation for specific application.

• Use hangers as required to support the weight of hoses.

• Installation must comply with all national and local codes.

• Torque supply lines to 90 N-m (66.4 ft-lbs) and return lines to 110 N-m (81.1 ft-lbs).

• Do not torque, overbend, stretch, or compress hoses.

• Apply wrenches to fittings only, not hose or weld ferrule.

• Avoid sharp edges or rubbing. Braid is for hose strength, not protection.

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Correct Incorrect

Support


Adding and Removing InRow RA UnitsThis section details the procedure for adding or removing an InRow RA unit in an existing system.

See the Pumped Refrigerant System Refrigerant Distribution Unit (RDU) Operation and Maintenance manual for detailed information.

Remove an InRow RA

Note: Remove the InRow RA from the RDU and reconfigure your group settings accordingly to prevent unnecessary errors. See the Pumped Refrigerant System Refrigerant Distribution Unit (RDU) Operation and Maintenance manual for configuration instructions.

1. Close the liquid supply line isolation valve to the InRow RA cooling module. 2. Configure the InRow RA cooling module to the evacuation mode. (See the Pumped Refrigerant

System Refrigerant Distribution Unit (RDU) Operation and Maintenance manual.)3. Close the vapor return line isolation valve to the InRow RA cooling module.4. Reclaim the refrigerant remaining in the InRow RA cooling module per local codes from both

supply and return isolation valve ports.5. Disconnect the two power cords from the power sockets. Disconnect the data cabling. 6. Disconnect the refrigeration piping to the InRow RA cooling module. 7. Connect the data cabling around the InRow RA cooling module that is being removed so that

communication is restored within the group.8. New equipment should be installed in the row to fill in the empty space.

Add an InRow RA

1. Ensure the isolation valves on both header pipes are closed.

2. Connect the refrigerant piping from the overhead lines to the InRow RA cooling module. 3. Connect the two power cords to the power sockets in the InRow RA cooling module. Connect the

data cabling. 4. Assign the InRow RA cooling module to the RDU (see the Pumped Refrigerant System

Refrigerant Distribution Unit (RDU) Operation and Maintenance manual).5. Configure the InRow RA cooling module to the evacuation mode (see the Pumped Refrigerant

System Refrigerant Distribution Unit (RDU) Operation and Maintenance manual).6. Evacuate the InRow RA cooling module and header connection piping per local codes.7. Configure the InRow RA cooling module to the standby mode (see the Pumped Refrigerant

System Refrigerant Distribution Unit (RDU) Operation and Maintenance manual).8. Open the liquid line and vapor line isolation valves.9. Configure the InRow RA cooling module to the ON mode (see the Pumped Refrigerant System

Refrigerant Distribution Unit (RDU) Operation and Maintenance manual).

CAUTIONEQUIPMENT DAMAGE

Do not open the isolation valves until refrigerant line connections are complete.



Refrigerant

Note: 1. Use only R-134a refrigerant to charge the system.Note: 2. Refrigerant can be added at the RDU or at the InRow RA. See the RDU Installation manual for more information about adding refrigerant at the Refrigeration Distribution Unit.

The installing contractor is responsible for providing sufficient refrigerant to complete the system charge during start-up. The required charge is 3.1 kg (6.9 lbs) when adding an InRow RA cooling module to an existing system.

For more information about charging the system, see the Pumped Refrigerant System Refrigerant Distribution Unit (RDU) Operation and Maintenance manual.

Specifications

MODEL ACRA100 Series ACRA101 Series

AIR SYSTEM - FAN (Standard Filter Installed)Size - mm (in) 250 (9.8)Air Volume - l/s (SCFM) 1523 (3226) 1510 (3200)Fan Motor - W (HP) each 160 (0.22) 170 (0.24)Number of fans 5

COOLING COIL - COPPER TUBE/ALUMINUM FINFace Area - m² (ft²) 0.84 (9.04)

FILTERS - WASHABLE - STANDARDQuantity 2

Size - mm (in) 238 X 933 (9.375 X 36.75)

Depth - mm (in) 13 (1/2)

Efficiency (%) <20% MERV 1

PHYSICAL DATA - NETWeight - kg (lbs) 152 (335) 160 (353)Height - mm (in) 1991 (78.39)Width - mm (in) 300 (11.8)Depth - mm (in) 1070 (42.13)

PHYSICAL DATA - SHIPPINGWeight - kg (lbs) 194 (428) 202 (446)Height - mm (in) 2156 (84.88)Width - mm (in) 879 (34.61)Depth - mm (in) 1137 (44.76)

CONNECTION SIZES Supply 1-1/4-in Threaded ring sealReturn 1 3/4-in Threaded ring seal

REFRIGERANTType R-134aCharge - kg (lb) 3.1 (6.9)

ELECTRICALInput Power Range 100-120V/1~/50/60 Hz 200-240V/1~/50/60 Hz

Note: Maximum distance between the RDU and the farthest cooling module is 24.4 equivalent meters (80 equivalent feet) for copper pipe and 19.8 equivalent meters (65 equivalent feet) for flex piping.

5/2012990-3687B-001

APC Worldwide Customer SupportCustomer 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 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 searching APC Knowledge Base and using e-support.

• Contact the APC Customer Support Center by telephone or e-mail.– Local, country-specific centers: go to www.apc.com/support/contact for contact information.

For information on how to obtain local customer support, contact the APC representative or other distributors from whom you purchased your APC product.

© 2012 APC by Schneider Electric. APC, the APC logo, and InRow are owned by Schneider Electric Industries S.A.S., American Power Conversion Corporation, or their affiliated companies. All other

trademarks are property of their respective owners.

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