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HPE Adaptive Rack Cooling System User Guide
Abstract
This document is for the person who installs racks and rack products. This procedure is
performed only by trained personnel. Hewlett Packard Enterprise assumes you are qualified in
performing installations and trained in recognizing hazards in rack products.
Part Number: P07980-001
Published: December 2018
Edition: 1
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©
Copyright 2018, 2018 Hewlett Packard Enterprise Development LP
Notices
The information contained herein is subject to change without notice. The only warranties for Hewlett
Packard Enterprise products and services are set forth in the express warranty statements accompanying
such products and services. Nothing herein should be construed as constituting an additional warranty.
Hewlett Packard Enterprise shall not be liable for technical or editorial errors or omissions contained
herein.
Confidential computer software. Valid license from Hewlett Packard Enterprise required for possession,
use, or copying. Consistent with FAR 12.211 and 12.212, Commercial Computer Software, Computer
Software Documentation, and Technical Data for Commercial Items are licensed to the U.S. Government
under vendor's standard commercial license.
Links to third-party websites take you outside the Hewlett Packard Enterprise website. Hewlett Packard
Enterprise has no control over and is not responsible for information outside the Hewlett Packard
Enterprise website.
Acknowledgments
Microsoft® and Windows® are either registered trademarks or trademarks of Microsoft Corporation in the
United States and/or other countries.
Google ® and the Google Logo® are registered trademarks of Google Inc.
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Contents
Overview.................................................................................................. 5
HPE Adaptive Rack Cooling System introduction............................. 11
Configuration factors............................................................................15
Installation............................................................................................. 16
Product overview...........................................................................................................................5
Introduction to the HPE Adaptive Rack Cooling System.............................................................11
HPE Adaptive Rack Cooling System component identification.................................................. 13
Optimum environment and site preparation................................................................................15
Safety information....................................................................................................................... 15
HPE Adaptive Rack Cooling System contents............................................................................16
Accessory and option kit contents.............................................................................................. 16
Required tools.............................................................................................................................22
Installing the HPE Adaptive Rack Cooling System..................................................................... 23
Baying the racks together........................................................................................................... 26
Integrating the HPE Adaptive Rack Cooling System and IT Rack .............................................29
HPE Adaptive Rack Cooling System pressure tube connections ................................... 29
Installing the pressure sampling tubes.............................................................................29
Configuring the unit ....................................................................................................................34
Installing the option kits ..............................................................................................................36
Installing the side panel blanks on the IT racks............................................................... 36
Installing side panel blanks on a 42U IT rack........................................................36
Installing side panel blanks on a 48U IT rack........................................................39
Installing the HPE ARCS Auto Door Release Kit and HPE ARCS Auto Door
Controller Kit.....................................................................................................................41
Installing the 6U Facade.................................................................................................. 49
Connecting to the facility water................................................................................................... 51
Management module............................................................................ 58
Management module overview................................................................................................... 58
Management module components..............................................................................................58
Accessing the management module through a terminal emulation program..............................60
Logging in through the terminal emulation program.........................................................60
Accessing the management module through the web interface................................................. 60
Logging in through the web interface............................................................................... 61
Configuring the leak detection alarm relay for facility power shutdown...................................... 61
Operator display....................................................................................62
Operator display overview.......................................................................................................... 62
Operator display components.......................................................................................... 62
Warning and alarm messages..........................................................................................62
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Frequently asked questions.................................................................64
HPE Adaptive Rack Cooling System frequently asked questions.............................................. 64
Troubleshooting.................................................................................... 66
HPE Adaptive Rack Cooling System troubleshooting.................................................................66
Specifications........................................................................................67
HPE Adaptive Rack Cooling System specifications....................................................................67
Thermal and air flow performance................................................................................... 68
Environmental specifications............................................................................................68
Rack specifications .................................................................................................................... 69
Replaceable parts and maintenance and service information......... 70
Obtaining replaceable parts ....................................................................................................... 70
Maintenance and service............................................................................................................ 70
Air and water heat exchanger maintenance.....................................................................70
Water quality and leveling requirements and condensation
management.......................................................................................... 71
Acceptable water quality specifications ..................................................................................... 71
Frost damage .............................................................................................................................71
Water precautions.......................................................................................................................72
Plumbing materials to avoid .......................................................................................................72
Leveling requirements ................................................................................................................72
Condensation management .......................................................................................................72
Websites................................................................................................ 73
Support and other resources...............................................................74
Accessing Hewlett Packard Enterprise Support......................................................................... 74
Accessing updates......................................................................................................................74
Customer self repair....................................................................................................................75
Remote support.......................................................................................................................... 75
Warranty information...................................................................................................................75
Regulatory information................................................................................................................76
Documentation feedback............................................................................................................ 76
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Overview
Product overview
The HPE Adaptive Rack Cooling System is a supplemental cooling system for data centers. It is a liquidto-air heat exchanger and fan system that removes heat generated by rack-installed IT equipment. The
HPE Adaptive Rack Cooling System is connected to adjoining racks with baying brackets and front and
rear extensions, creating a cold aisle and hot aisle air plenum. Hot air from the IT exhaust is pulled
through the HPE Adaptive Rack Cooling System, cooled with the heat exchanger that is connected to
facility water, and the cooled air is then returned to the inlet of the servers. The HPE Adaptive Rack
Cooling System is offered in four configurations using either HPE ARCS 42U 600x1600mm Racks or HPE
ARCS 48U 600x1600mm Racks.
NOTE: The HPE Adaptive Rack Cooling System supports both HPE ARCS 42U and 48U 600x1600mm
Racks. For the following front elevation views, the HPE ARCS 48U 600x1600mm Rack is shown. The
HPE Adaptive Rack Cooling System is shown without doors for better viewing of components.
The thermal airflow illustrations show a top view of the HPE Adaptive Rack Cooling System and HPE
ARCS 42U/48U 600x1600mm Racks.
HPE Adaptive Rack Cooling System + one HPE ARCS 42U/48U 600x1600 Rack
Airflow for HPE Adaptive Rack Cooling System (single-rack configuration)
Overview 5
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Item Description
1 HPE Adaptive Rack Cooling System
2 HPE ARCS 48U 600x1600mm Rack
HPE Adaptive Rack Cooling System + two HPE ARCS 42U/48U 600x1600 Racks
Air flow for HPE Adaptive Rack Cooling System (dual-rack configuration)
6 Overview
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Item Description
1 HPE Adaptive Rack Cooling System
2 HPE ARCS 48U 600x1600mm Rack
HPE Adaptive Rack Cooling System + three HPE ARCS 42U/48U 600x1600mm Racks
Air flow for HPE Adaptive Rack Cooling System (three-rack configuration)
Overview 7
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Item Description
1 HPE Adaptive Rack Cooling System
2 HPE ARCS 48U 600x1600mm Rack
HPE Adaptive Rack Cooling System + four HPE ARCS 42U/48U 600x1600mm Racks
Air flow for HPE Adaptive Rack Cooling System (four-rack configuration)
8 Overview
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Item Description
1 HPE Adaptive Rack Cooling System
2 HPE ARCS 48U 600x1600mm Rack
The airflow of the HPE Adaptive Rack Cooling System fully supports the industry standard front-to-back
cooling—cold air pulled into the front of the server and warm air expelled out the rear of the unit. All
devices receive adequate and evenly distributed cool air regardless of the mounting position within the
rack. The HPE Adaptive Rack Cooling System distributes precisely cooled and targeted air flow evenly
across the front of the IT equipment. The HPE Adaptive Rack Cooling System and rack extensions
channel warmed air from the rear of the IT equipment into the side-mounted or center-mounted HPE
Adaptive Rack Cooling System cooling unit. From there, it is cooled and recirculated to the front of the
equipment stack.
A 6U facade comes in the HPE ARCS 48U Air Rack Installation Kit, and you can place it on top of the
HPE Adaptive Rack Cooling System to make the HPE Adaptive Rack Cooling System the same height as
the HPE ARCS 48U 600x1600mm Racks. The following illustration shows a single-unit configuration with
the 6U facade in place on the HPE Adaptive Rack Cooling System and the HPE Adaptive Rack Cooling
System doors in place.
Overview 9
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Item Description
1 HPE Adaptive Rack Cooling System with 6U
facade
2 HPE ARCS 48U 600x1600mm Rack
10 Overview
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HPE Adaptive Rack Cooling System introduction
Introduction to the HPE Adaptive Rack Cooling System
The HPE Adaptive Rack Cooling System is a liquid-to-air heat exchanger and fan system that removes
heat generated by rack-installed IT equipment. It is connected to adjoining racks by means of a cold aisle
and hot aisle air plenum. Hot air from the IT exhaust is pulled through the HPE Adaptive Rack Cooling
System, cooled with the heat exchanger connected to facility water, and the cooled air is then returned to
the inlet of the servers.
Unit Side View
Item Reference
1 Humidity sensor
2 Touchscreen display
3 Front air plenum
4 Fan units (4)
5 Condensation pump
6 Leak sensors
7 Isolation valves
8 Control valve
9 Rear air plenum
10 Heat exchanger unit
Unit Front View
HPE Adaptive Rack Cooling System introduction 11
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Item Description
1 CMC (management module)
2 Transfer switch
Unit Rear View
Item Description
1 Water supply
2 Water return
12 HPE Adaptive Rack Cooling System introduction
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HPE Adaptive Rack Cooling System component identification
Control Valve
Item Reference
1 Electrical connector
2 Actuator assembly
3 Valve position indicator
Isolation Valves
HPE Adaptive Rack Cooling System introduction 13
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Item Reference
1 Valve position indicator
2 Logic switch
3 Valve lock
4 Valve power connector
5 Valve status connector
Connectors
Item Reference
1 AC power in
2 Fan power connectors
3 Valve connectors
4 Rear air pressure connectors
5 CAN bus connection
6 Ethernet connection
7 -10 Sensors
11 ARPO (alarm) relay output
12 Door opening
13 Fuses
14 HPE Adaptive Rack Cooling System introduction
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Configuration factors
Optimum environment and site preparation
CAUTION: Water quality that is out of spec may cause decreased cooling capacity or disruption in
service. The facility water supplied to the HPE Adaptive Rack Cooling System must meet the
guidelines stated in this manual. The HPE Adaptive Rack Cooling System warranty does not cover
damage caused by facility water that does not meet specifications.
To provide optimum performance with minimum maintenance, your site must meet environmental
requirements. The HPE Adaptive Rack Cooling System is intended to be installed in an indoor location
that is temperature controlled and relatively free of conductive contaminants.
To route water lines to your HPE Adaptive Rack Cooling System, use one of the following methods:
• Through an opening in the raised floor
• Through the top of the HPE Adaptive Rack Cooling System
Safety information
The HPE Adaptive Rack Cooling System is rated at a maximum facility pressure of 8 bar (116 PSI).
If valves are installed on the external pipe work that could potentially trap fluid inside the HPE Adaptive
Rack Cooling System, special precautions must be taken. To prevent severe plumbing failure due to
extreme pressure, use an expansion tank with a preinstalled safety valve in the plumbing circuit
connected to the unit.
WARNING: This equipment must be installed in a restricted access area. The equipment is not to
be accessible to persons (including children) with reduced physical, sensory, or mental capabilities,
or a lack of experience and knowledge, unless they have been given supervision or instruction. Only
authorized technicians trained by Hewlett Packard Enterprise should attempt to repair this
equipment. All troubleshooting and repair procedures are detailed to allow only subassembly- or
module-level repair. Because of the complexity of the individual boards and subassemblies, no one
should attempt to make repairs at the component level or to modify any printed wiring board.
Improper repairs can create a safety hazard.
Configuration factors 15
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Installation
HPE Adaptive Rack Cooling System contents
The HPE Adaptive Rack Cooling System contains the following items:
• HPE ARCS Accessory Kit
• Power Cord kit
Accessory and option kit contents
If any of the following items are missing or damaged, contact your Hewlett Packard Enterprise authorized
reseller. Listed materials are subject to change.
Accessory Kits
HPE ARCS Accessory Kit
The HPE ARCS Accessory Kit comes with the HPE Adaptive Rack Cooling System. Use the parts
included in this kit to properly install the HPE Adaptive Rack Cooling System.
Item Description Quantity
1 Baying brackets 6 small
2 6-32 x 5/8 Phillips head screws 16
3 M5.5 x 10 Torx screws with serrated
16 Installation
12
head
Table Continued
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Item Description Quantity
4 Air pressure tubing kit with brackets (not
shown)*
5 Leveling pads 2
6 M6 x 1 x 10 Flathead Torx trilobe screws 16
7 M5.5 x 13 Torx screws 6
8 HPE G2 Rack Baying Kit (Contains
brackets and screws used to bay the
racks together on either a 600mm or 24inch pitch.)
Worm drive hose and tube clamps 2
Panduit boots 2
Gasket, 15 x 15 1
Masterkleer PVC clear tubing, 6 ft. 2
Safety, compliance, & warranty
information
1
2
1
*The HPE ARCS Air Pressure Tubing Kit contains the following components:
• Aluminum pipe, 1/8" diameter X 18" long, threaded on both ends
• Aluminum end cap, 1/8" diameter
• Barbed, threaded NPTF hose end, 1/8" diameter
• Pipe clamp, galvanized, 3/8"ID X 9/16" long (for HPE Adaptive Rack Cooling System)
• Pipe clamp, galvanized, 3/8"ID X 11/16" long (for HPE ARCS 42U/48U 600x1600mm Racks)
• Screw, 5.5x1.81x10 Pan Torx T25
• Flat washer, M6
• Plastic barbed tube fittings for air & water, 1/8"
• Polyurethane Tubing for Water, 5/32"ID, 1/4" OD
HPE ARCS Power Cord Kit
The HPE ARCS Power Cord Kit contains:
• IEC 60309 32/30A 220/415V 6h/IP44 power cord (Quantity 2)
• NEMA L22-20P 277/480V 4P/5W power cord (Quantity 2)
HPE ARCS Air Rack Accessory Kit
The HPE ARCS Air Rack Accessory Kit comes with the HPE ARCS 42U/48U 600x1600mm Racks. Use
the parts included in this kit to properly install the racks.
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Item Description Quantity
Gasket, 15x15 Foam for sealing the rack 1
HPE G2 Rack
Grounding Kit
HPE G2 Rack
Baying Kit
Rack Hardware Kit Screws, cage nuts, and other hardware
Cable ties Used to attach cables to the rack 1
Transportation
bracket kit
Option Kits
HPE ARCS Water Hook-Up Kit
Hewlett Packard Enterprise recommends using the HPE Adaptive Rack Cooling SystemWater Hook-Up
Kit to connect the HPE Adaptive Rack Cooling System to a facility water supply. Each kit includes two
hose assemblies with 2-inch sanitary flange connections that are required for connecting the facility
supply and return lines to the main inlet and outlet connections of an HPE Adaptive Rack Cooling
System. One Water Hook-Up Kit is required for each HPE Adaptive Rack Cooling System.
Cables, screws, and washers used to
ground the rack through the rack frame
Brackets and screws used to bay the
racks together on either a 600mm or 24inch pitch
used to install servers to the EIA rail
Install these brackets when rack is fully
loaded and will be shipped
1
1
1
1
NOTE: To properly connect the Water Hook-Up Kit, the facility plumbing connection must be a 2-inch
flange fitting.
NOTE: The illustration is not drawn to scale. The actual length of the hoses is approximately 1.83 m (6 ft).
HPE ARCS 42U Air Rack Installation Kit
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Item Description
1
2
3
4
5
6
7
HPE ARCS 48U Air Rack Installation Kit
Large side panel blank for the rear extension (4)
Small side panel blank for the rear extension (4)
Rack side panel blank (24)
Side panel blank for the front extension, Panel B (10)
Side panel blank for the front extension, Panel D (2)
Side panel sealing tape
Screws, 6-32, 3/8" long (160)
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Item Description
1
2
3
4
5
6
7
8
9
HPE ARCS Auto Door Release Kit
20 Installation
Rack side panel blank, 48U (8)
Rack side panel blank (8)
Side panel blank for the front extension, Panel C (4)
Side panel blank for the front extension, Panel A (4)
Screw, 6-32, 3/8" long (80)
Grounding screw (1)
Screw, 5.5 X1.81X10 Pan Torx T25 (3)
Facade, 6U (1)
Left and right extension brackets
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Item Description
1
2
3
4
5
6
7
HPE ARCS Auto Controller Kit
Striker assembly with Southco R4-90-121-10 (1)
Front door latch assembly with bracket (1)
Rear door latch assembly (2)
Auto door cable harness assembly (1)
Screws, rear lock mount (8)
Screws, 1/4-20 button head (2)
Screws, M5.5X10 Torx pan head tap (3)
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Item Description
1
2
3
4
5
6
7
8
Required tools
The following tools are required for installation:
• Flat blade screwdriver
• #2 Phillips screwdriver
Power supply, 24 Volt (1) with mounting hardware
CMC III I/O ARCS Rack Module (1) with mounting hardware
Screws, M5.5X10 Torx pan head tap (2)
Custom mounting bracket (1)
Zip ties (50)
C13/14 power cord, 12 ft (1)
CanBus cable, 5 meters (1)
HPE Adaptive Rack Cooling System IO Module cable (1)
• Adjustable wrench
• Torx screwdriver set
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• Bubble level
• (Optional) 5mm square head key for hex drain
Installing the HPE Adaptive Rack Cooling System
Procedure
1. Read the unpacking instructions on the HPE Adaptive Rack Cooling System packaging material.
WARNING: The HPE Adaptive Rack Cooling System is shipped on a pallet and weighs
approximately 645 kg (1,423 lb) by itself or 732 kg (1,614lb) including packaging. Hewlett
Packard Enterprise recommends hiring professional movers to move the unit, remove the HPE
Adaptive Rack Cooling System from the pallet, and move the HPE Adaptive Rack Cooling
System to the final location.
2. Using four or more people and the ramps that came with the HPE ARCS 42U/48U 600x1600mm
Rack, remove the HPE Adaptive Rack Cooling System from the pallet.
3. Roll the HPE Adaptive Rack Cooling System to the final location.
CAUTION: Before attaching the hoses to the HPE Adaptive Rack Cooling System, verify that
the water supply and return are closed. Water that leaks into the unit can cause significant
damage.
4. Install the hoses, differential pressure tube, and Panduit boots.
5. To level the HPE Adaptive Rack Cooling System:
a. Remove the screws from the fan housing.
b. Unplug the fan communication and power cables.
c. Remove the lower fan from the rack.
CAUTION: Use a minimum of two people to manually move the fan.
d. Adjust the leveling feet using a bubble level.
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WARNING: To avoid tipping the HPE Adaptive Rack Cooling System over, be sure that the
leveling feet are lowered when the HPE Adaptive Rack Cooling System is equipped, serviced,
and operated.
6. Connect the network cable to the RJ-45 connector (labeled "ETH") on the transfer switch at the top
right on the rear of the HPE Adaptive Rack Cooling System.
7. Plug the other end of the network cable into the facility network connection outlet.
8. Plug the primary power cord into the power connector on the left at the power distribution inside the
HPE Adaptive Rack Cooling System.
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WARNING: Before connecting the power cords to a power source, be sure that the unit is
properly grounded for potential equalization caused by high leakage current.
IMPORTANT: Do not connect the power cords into a power source before connecting to the
HPE Adaptive Rack Cooling System.
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If you are using a secondary power cord, plug it into the power connector on the right.
CAUTION: Do not force installation of power cords. Power cords are keyed and can only be
installed in one direction. Forcing cables into plugs can permanently damage the cable or the
plug.
WARNING: To reduce the risk of electric shock or damage to the equipment:
• Do not disable the power cord grounding plug. The grounding plug is an important safety
feature.
• Plug the power cord into a grounded (earthed) electrical outlet that is easily accessible at all
times.
• To disconnect power to the equipment, unplug the power cord from the power source.
• Do not route the power cord where it can be walked on or pinched by items placed against
it. Pay particular attention to the plug, electrical outlet, and the point where the cord extends
from the rack.
WARNING: To reduce the risk of fire, connect the power cord to a power outlet with overcurrent
protection not exceeding 20A.
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WARNING: To reduce the risk of electric shock, completely remove power before servicing by
disconnecting both power cords.
NOTE: If no secondary power is connected, the transfer switch will indicate a fail status for the
secondary power supply.
9. Guide the other ends of the power cords through the HPE Adaptive Rack Cooling System, and then
plug them into an appropriate power source.
10. Check for any errors on the display screen. If errors are displayed, see HPE Adaptive Rack Cooling
System troubleshooting.
For information on entering network settings, accessing controls, reviewing the details on the info
page, and resetting to factory defaults, see the HPE Adaptive Rack Cooling System Web Interface
Guide.
Baying the racks together
Use the foam gasket included in the HPE ARCS Air Rack Accessory Kit and the sealing tape included in
the HPE ARCS Air Rack Installation Kit to bay the HPE Adaptive Rack Cooling System and HPE ARCS
42U/48U 600x1600mm Racks together to prevent loss of air pressure within the system. Start the
installation at the HPE Adaptive Rack Cooling System and work outwards in both directions to the end of
the row.
For more information on accessory and option kits, see Accessory and option kit contents.
On the HPE Adaptive Rack Cooling Unit:
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1. If the HPE Adaptive Rack Cooling System is on the end of a row, to seal around the panels, apply
sealing tape as indicated.
2. If the HPE Adaptive Rack Cooling System is bayed to an adjacent rack, apply the foam gasket in the
corners of the frame.
3. If the HPE Adaptive Rack Cooling System is bayed to an adjacent rack, apply the foam gasket around
the perimeter. To separate high and low pressure, apply one central vertical strip of foam gasket.
On HPE ARCS 42U 600x1600mm Racks:
1. If the HPE Adaptive Rack Cooling System is on the end of a row, to seal around the panels, apply
sealing tape as indicated.
2. If the HPE Adaptive Rack Cooling System is bayed to an adjacent rack, apply the foam gasket in the
corners of the frame.
3. If the HPE Adaptive Rack Cooling System is bayed to an adjacent rack, apply the foam gasket around
the perimeter. To separate high and low pressure, apply one central vertical strip of foam gasket.
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On HPE ARCS 48U 600x1600mm Racks:
1. If the HPE Adaptive Rack Cooling System is on the end of a row, to seal around the panels, apply
sealing tape as indicated.
2. If the HPE Adaptive Rack Cooling System is bayed to an adjacent rack, apply the foam gasket in the
corners of the frame.
3. If the HPE Adaptive Rack Cooling System is bayed to an adjacent rack, apply the foam gasket around
the perimeter. To separate high and low pressure, apply one central vertical strip of foam gasket.
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Integrating the HPE Adaptive Rack Cooling System and IT Rack
The HPE Adaptive Rack Cooling System is designed to supply the IT equipment with the proper amount
of cooling airflow. The HPE Adaptive Rack Cooling System fan speeds are controlled to build a slightly
positive differential pressure between the front of the IT racks and rear of the HPE Adaptive Rack Cooling
System. The IT fans increase or decrease speed as the IT load requires. The HPE Adaptive Rack
Cooling System control system senses increased or decreased pressure differences and adjusts fans
accordingly to maintain the pressure differential set point. These actions result in a neutral environment
for the IT racks, and the HPE Adaptive Rack Cooling System fans do not push more air than required
across the system. For proper operation, the HPE Adaptive Rack Cooling System measures the pressure
difference between the front of the IT rack and the rear of the HPE Adaptive Rack Cooling System.
HPE Adaptive Rack Cooling System pressure tube connections
During deployment, after the IT racks and the HPE Adaptive Rack Cooling System have been bayed
together, connect the pressure reference pickups in the IT racks to the measurement ports on the front of
the HPE Adaptive Rack Cooling System control cabinet. Then connect the pressure reference pickup in
the rear of the HPE Adaptive Rack Cooling System to the measurement ports on the rear of the HPE
Adaptive Rack Cooling System. There are two ports in the front and two ports in the rear of the HPE
Adaptive Rack Cooling System control box.
To dampen local pressure variations and give accurate ambient pressure readings, the pressure sampling
tubes consist of multiple small holes perforating a metal tube. Each tube is 18 inches long. One end is
sealed and the other end has a hose barb.
Installing the pressure sampling tubes
The parts used to perform this procedure are located in the HPE ARCS Accessory Kit and the HPE ARCS
Rack Chunk Installation Kit.
To install the pressure sampling tubes:
1. To identify the IT racks cooled by each individual HPE Adaptive Rack Cooling System, looking to the
left and right of the HPE Adaptive Rack Cooling System, examine at the final HPE Adaptive Rack
Cooling System and rack layout drawing. The farthest IT racks could be any of the following
configurations:
• The two IT racks on either side of the HPE Adaptive Rack Cooling System
• One rack farther away from the HPE Adaptive Rack Cooling System on either side (four IT racks
total)
• A combination of both of the preceding configurations, with two IT racks on one side and a single IT
rack on the other side.
To ensure smooth control, when multiple HPE Adaptive Rack Cooling Systems are located in a row of
IT equipment, do not overlap the pressure measurement zones. Connect only one set of pressure
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measurement tubes to an IT rack from one HPE Adaptive Rack Cooling System. Do not connect
multiple pickups to an IT rack from different HPE Adaptive Rack Cooling Systems. In the specific case
of an HPE Adaptive Rack Cooling System mounted at the end of an aisle with no IT racks to one side,
join the two pressure tubes for that HPE Adaptive Rack Cooling System with a tee and route it to the
farthest IT rack on the side of the HPE Adaptive Rack Cooling System that is cooled by that HPE
Adaptive Rack Cooling System, up to two racks away.
HPE Adaptive Rack Cooling System configured between two IT racks with each IT rack
receiving a pressure tube on the cold aisle side
HPE Adaptive Rack Cooling System configured between four IT racks with the pressure tubes
installed on the furthest outboard IT racks on either side
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HPE Adaptive Rack Cooling System configured at one end of two IT racks
NOTE: For this special installation, join hose barbs together and install them only on the farthest rack
from the HPE Adaptive Rack Cooling System (left rack in this illustration). Purchase an extra Yconnection for this installation.
2. Install the pressure pickup tubes on the top of the extension in the IT racks identified in step 1.
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• Use two hose clamps to install each tube.
• Orient the hose barb toward the HPE Adaptive Rack Cooling System that is cooling that rack.
NOTE: The barbs on the hose must face toward the HPE Adaptive Rack Cooling System.
You might need to bend the assembly up slightly for IT clearance on installation.
• Position port holes horizontally with one side facing the IT rack and the other side facing the
extension.
3. Connect the HPE Adaptive Rack Cooling System to the pickups in the IT racks with flexible tubing.
When facing the HPE Adaptive Rack Cooling System from the front (fans showing), the pressure
reference ports are located in the upper-left side of the control box at the top of the HPE Adaptive
Rack Cooling System.
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• Connect Port 1 (DP1—left port) to the rack on the left side of the HPE Adaptive Rack Cooling
System.
• Connect Port 2 (DP2—right port) to the rack on the right side of the HPE Adaptive Rack Cooling
System.
4. Secure the tubing between the port on the HPE Adaptive Rack Cooling System and the final
connection in the IT rack.
5. Mount the rear HPE Adaptive Rack Cooling System pressure pickup tube with the hose barb facing
right.
6. On the rear of the HPE Adaptive Rack Cooling System, join the two reference ports with a section of
the tubing and a Y-connector.
7. Connect the HPE Adaptive Rack Cooling System reference ports to the pressure pickup tube.
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8. Install side panels at the end of each row of racks. For more information on installing side panel
blanks, see Installing the side panel blanks on the IT racks.
Configuring the unit
The HPE Adaptive Rack Cooling System design allows monitoring and management through an Ethernet
network interface. Configure basic configuration and operational set points on the front panel display.
Configure basic and advanced parameters remotely using a web user interface. When an HPE Adaptive
Rack Cooling System is first installed, you must configure the network on the unit. The following steps
detail how to set up the HPE Adaptive Rack Cooling System on the facility network, defaulting to DHCP
or setting up a static IP address and how to access the web user interface.
Ethernet setup:
Access and change the HPE Adaptive Rack Cooling System Ethernet settings using any of the following
methods:
• DHCP
• Factory default IP address and the web interface
• Serial console interface on the CMC unit on the front of the HPE Adaptive Rack Cooling System
The network connection for the HPE Adaptive Rack Cooling System is located on the rear of the unit at
the top of the unit next to the transfer switch.
1. You can access the HPE Adaptive Rack Cooling System web interface by default in the following
ways, depending on the facility network.
• If a DHCP server is available on the network, the HPE Adaptive Rack Cooling System defaults to
• If DHCP is not available on the network, the HPE Adaptive Rack Cooling System defaults to the IP
34 Installation
DHCP. The front panel of the HPE Adaptive Rack Cooling System shows the assigned IP address
on the information screen.
address 192.168.0.190. To view the web interface, use a PC configured with the appropriate IP
settings.
Page 35
a. Once the initial Ethernet connection is complete, access the web interface using a supported
browser and one of the following URLs:
http://ipaddress
- or-
https://ipaddress
(where ipaddress is the IP address of the management module).
NOTE: Supported browsers are:
• Google Chrome, version 47 or later
• Microsoft Internet Explorer, version 11 or later
• Mozilla Firefox, version 42 or later
The default login to the web interface is:
• Username: admin
• Password: admin
b. To access HPE Adaptive Rack Cooling System settings, select the configuration tab on the right
side of the screen. The admin password can be changed using the button on upper right side of
webpage. A few of the pertinent menu options for initial setup are:
• TCP/IP settings allow selection of DHCP or setup of static IP address.
• The HTTP menu enables or disables the web interface and HTTP/HTTPS selection.
• Console settings allow disabling or enabling of SSH and Telnet console access.
• The Users menu under Security allows the admin to change user access levels and passwords.
2. If the HPE Adaptive Rack Cooling System Ethernet interface is not enabled or the network port cannot
be accessed, access the HPE Adaptive Rack Cooling System serially through the mini-USB port on
the front of the CMC to set up the Ethernet port for web access. The CMC contains an internal serial to
USB adapter. To communicate to the unit, use the following settings with a serial console program.
• Bits per Second: 9600 (needs verification)
• Data bits: 8
• Parity: none
• Stop bits: 1
• Flow control: none
• Username (default): admin
• Password (default): admin
Once logged in, you can enable the port and configure the IP information. Use the web interface to
complete further detailed setup.
Installation 35
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a. The Network Configuration menu contains all the networking options. The Network Info menu
shows the current configuration.
Main Menu
> 1 Network Configuration <
2 Network Info Page
3 System Info Page
4 Console Commands
5 Set Configuration
b. The Network Configuration menu contains networking and security settings. The IPV4 menu
contains IP address settings and the enable/disable DHCP setting. The Security menu contains
settings to allow access to http, https, or both. After changes are made, use the G menu option to
return to the network configuration menu and reboot the HPE Adaptive Rack Cooling System.
Menu Network Configuration
> 1 IPv4 Configuration <
2 IPv6 Configuration
3 DNS Configuration
4 LDAP Configuration
5 Radius Configuration
6 Modbus/TCP Configuration
7 Settings Ethernet Port >Auto<
8 System Name > HPE Adaptive Rack Cooling System<
9 System Contact >Your administrator<
A System Location >Room 123 Building ABC<
B Actual Date >26.02.1970<
C Actual Time >20:08:41<
D Beeper >Disabled<
E Security
F SNMP Configuration
G Reboot Unit >No<
ESC=End
IPv4 Configuration
Installing the option kits
There are several option kits available for use with the HPE Adaptive Rack Cooling System. For more
information about option kits, see Accessory and option kit contents.
Installing the side panel blanks on the IT racks
To close off the racks at the end of a row, install side panel blanks on the IT racks. Installing the blanks
isolates the racks from the room environment.
NOTE: The following illustrations show panel installation on the left row end. Installation on the right row
end is the same but in mirror image.
Installing side panel blanks on a 42U IT rack
The HPE ARCS 42U Air Rack Installation Kit is for 42U racks and includes the following side panel
blanks.
36 Installation
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Item Description
1 4 small side panel blanks for the rear extension
2 4 large side panel blanks for the rear extension
3 24 rack side panel blanks
4 2 "Panel D" side panel blanks for the front
extension
5 10 "Panel B" side panel blanks for the front
extension
For more information on the HPE ARCS 42U Air Rack Installation Kit contents, see Accessory and
option kit contents.
To install the rear extension blanks:
1. Place the blank against the IT rack, and line up the screw holes.
2. Install four screws to hold the blank in place.
Installation 37
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3. Repeat steps 1 and 2 for each additional rear extension blank.
To install the side panel blanks:
NOTE: If the HPE Adaptive Rack Cooling System is at the end of the row, side panel blanks must be
installed from the outside, as shown in the previous illustration.
1. From the inside of the HPE Adaptive Rack Cooling System, place the blank against the IT rack, and
line up the screw holes.
2. Install three screws to hold the blank in place.
3. Repeat steps 1 and 2 for each additional side panel blank.
To install the front extension blanks:
1. Place the blank against the IT rack, and line up the screw holes.
2. Install four screws to hold the blank in place.
38 Installation
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3. Repeat steps 1 and 2 for each additional front extension blank.
Installing side panel blanks on a 48U IT rack
The HPE ARCS 48U Air Rack Installation Kit is for 48U racks and includes the following side panel
blanks.
Item Description
1 8 rack side panel blanks
2 8 Rack side panel blanks, 48U
Table Continued
Installation 39
Page 40
Item Description
3 4 "Panel C" side panel blanks for the front
extension
4 4 "Panel A" side panel blanks for the front
extension
NOTE: You also need the HPE ARCS 42U Air Rack Installation Kit to complete the panel installation. For
more information on the HPE ARCS 42U & 48U Air Rack Installation Kit contents, see Accessory and
option kit contents.
To install the front extension side panel blanks:
1. Place the blank against the IT rack, and line up the screw holes.
2. Install four screws to hold the blank in place.
3. Repeat steps 1 and 2 for each additional front extension side panel blank.
To install the side panel blanks:
NOTE: If the HPE Adaptive Rack Cooling System is at the end of the row, side panel blanks must be
installed from the outside, as shown in the previous illustration.
1. From the inside of the HPE Adaptive Rack Cooling System, place the blank against the IT rack, and
line up the screw holes.
2. Install three screws to hold the blank in place.
40 Installation
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3. Repeat steps 1 and 2 for each additional side panel blank.
To install the top 6U blanks:
1. From the inside of the HPE Adaptive Rack Cooling System, place the blank against the IT rack, and
line up the screw holes.
2. Install three screws to hold the blank in place.
3. Repeat steps 1 and 2 for each additional top 6U blank.
Installing the HPE ARCS Auto Door Release Kit and HPE ARCS Auto Door Controller Kit
To allow the HPE Adaptive Rack Cooling System doors to automatically open when customer-defined
temperature set points are exceeded, install the HPE ARCS Auto Door Release Kit and the HPE ARCS
Auto Door Controller Kit. Both kits must be purchased for the system to work properly. For more
information on temperature set points, see the HPE Adaptive Rack Cooling System Web Interface Guide.
Installation 41
Page 42
For more information on the HPE ARCS Auto Door Release Kit and HPE ARCS Auto Door Controller Kit
contents, see Accessory and option kit contents.
NOTE: To install these option kits, a rack PDU plug must be available for a C13/C14 power cable to be
installed. One c13 PDU outlet is required.
To install the HPE ARCS Auto Door Release and Controller Kits:
1. Remove the existing striker plate from the front door.
2. Align the new striker assembly with the large reference whole on the front extension. Then use the
set of three M5.5X10 Torx pan head tap screws that are included with the kit to install the striker
assembly.
3. Align the front door latch assembly with the screw holes on the front door. Ensure that the actuating
pin is under the door latch. Then use two 1/4-20 button head screws to install the front door latch
assembly.
42 Installation
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4. Remove the existing striker plates from the top and bottom of the rear door.
5. Install the lower rear door latch assembly:
• Route the auto door harness cable through the hole and connect it to the rear door latch
assembly.
• Align the rear door latch assembly with the screw holes.
• Use four rear lock mount screws to install the rear door latch assemblies.
• To prevent electrostatic discharge damage when the door is opened, apply the tape provided in
the HPE ARCS 42U Air Rack Installation Kit to the cable connection.
Installation 43
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6. Install the upper rear door latch assembly:
• Route the auto door harness cable through the hole and connect it to the rear door latch
assembly.
• Align the rear door latch assembly with the screw holes.
• Use four rear lock mount screws to install the rear door latch assemblies.
• To prevent electrostatic discharge damage when the door is opened, apply the tape provided in
the HPE ARCS 42U Air Rack Installation Kit to the cable connection.
7. Align the custom mounting bracket with the screw holes on the door of the HPE Adaptive Rack
Cooling System. Then use the two M5.5X10 Torx pan head tap screws that came with the kit to
install the mounting bracket.
44 Installation
Page 45
8. Align the power supply with the screw holes on the top of the mounting bracket. Then use four
screws to install the power supply.
9. Align the CMC III I/O ARCS Rack Module with the screw holes on the mounting bracket underneath
the power supply. Then use four screws to install the CMC III I/O ARCS Rack Module.
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10. To connect the HPE Adaptive Rack Cooling System to the IT controller, connect the 5m CAN bus
cable harness included in the HPE ARCS Auto Controller Kit to the CMC, and then route the cable
as shown. Connect the other end to the I/O module.
11. To connect the power supply to the power source, connect the power cord (part number 142263-005)
to the power module (part number P06226-001), and then route the cable as shown. Connect the
other end to your PDU.
46 Installation
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12. Connect the controller cable bundle to the I/O module as labeled on the harness.
Item Description
1 HPE Adaptive Rack Cooling System
2 Harness coming from IT rack (part number
P06225-001)
3 Power supply
4 I/O module
Installation 47
Page 48
13. To connect the auto door opening kit cables:
a. Plug the cable into the IT controller.
b. Route the cable across the top of the IT rack door and down to the door latch assembly.
c. Route the cable across the top of the IT rack and to the upper door latch assembly.
d. Route the cable along the right rear of the rack extension. Use zip ties to secure the cable.
Connect the cable to the lower door latch assembly.
48 Installation
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Installing the 6U Facade
Customers with 48U IT racks might want to install the 6U Facade onto the HPE Adaptive Rack Cooling
System unit. Installation of the 6U Facade is for purely aesthetic purposes. The 6U Facade comes with
the HPE Apollo Air 48U Rack Installation Kit. For more information on the kit contents, see Accessory
and option kit contents.
To install the 6U Facade:
1. Unscrew and remove the two screws on the top front of the HPE Adaptive Rack Cooling System. Set
the screws aside in a safe place.
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2. To attach the left and right mounting brackets to the 6U facade, use the four screws included with the
kit.
3. Place the 6U Facade on top of the HPE Adaptive Rack Cooling System, lining up the screw holes. Use
the screws you set aside in step 1 to screw the 6U Facade into place.
50 Installation
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Connecting to the facility water
CAUTION: Water quality that is out of spec might cause decreased cooling capacity or disruption in
service. The water flowing into the HPE Adaptive Rack Cooling System must meet the guidelines
stated in the HPE Adaptive Rack Cooling System Site Preparation Guide. Damage caused by
contaminated water is not covered by the HPE Adaptive Rack Cooling System warranty.
Before attaching the hoses to the HPE Adaptive Rack Cooling System, verify that the water supply
and return are closed. Water that leaks into the unit can cause significant damage.
NOTE: Facility hose connections might vary by customer requirements.
NOTE: The HPE Adaptive Rack Cooling System has a failed last control state valve. During initial
hookup, the control valve must be manually opened through the web interface to allow water to flow
through. Isolation valves will open automatically once the HPE Adaptive Rack Cooling System is powered
up.
1. Route the water hoses from either the top or bottom (depending upon site specifications), through
the floor cut-out, and then install each main hose to the HPE Adaptive Rack Cooling System:
a. Remove the blanks from the extensions.
b. To install the Panduit boots for the hoses to pass through:
I. Slide the Panduit boot over the hose.
II. Install the 16 screws included with the kit.
III. Tighten the hook and loop strip to secure the Panduit boot to the frame of the rear
extension.
Installation 51
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c. Attach the 2-inch female hose coupling to the 2-inch cam and groove male coupling on the HPE
HPE Adaptive Rack Cooling System. Lock into place.
2. Route the condensate pan gravity drain and condensate pump outlet hoses to an appropriate facility
drainage system.
a. Install any necessary extensions and route the condensate pump outlet line and gravity drain
b. Be sure that the facility drain connection point is lower than the condensation collection pan and
52 Installation
tubing to a facility drainage point.
that all gravity drain tubing is routed below the level of the condensation pan.
Page 53
NOTE: The condensation pump drain hose is located underneath the HPE Adaptive Rack
Cooling System.
c. The following figure shows the location of the two overflow drains in the rear of the cooling unit.
Each drain is a 15-mm ID tube. There is also a 15-mm ID gravity drain tube and a 0.275-in ID/
0.375-in OD condensate pump drain tube. Both tubes are 1.83 m (6 feet) long. The preferred
method of routing for all hoses is downward at an angle of at least 3º (pitch of 0.6 inch per 12
inches), without loops, and away from the HPE Adaptive Rack Cooling System cabinet. All hoses
must be routed to a floor drain or reclamation system. The two overflow hoses are located in the
HPE ARCS Accessory Kit.
3. To minimize strain on connections and to minimize operational hose dynamics, secure and support
the facility water supply and return hoses as necessary.
4. Log in to the web interface:
a. Enter the URL: https://ipaddress.
b. Enter the user name in the User Name field. The default user name is admin.
c. Enter the password in the Password field. The default password is admin.
CAUTION: Once installation is complete, be sure to return the settings to Automatic to avoid
damage to the unit. See step 11 for details.
5. To open the HPE Adaptive Rack Cooling System settings tree, select the Visualization icon.
Installation 53
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6. Select the Device Settings button on the System Control group.
7. Change System Control.Fans.Control Mode to Manual and System Control.Valves.Control
Mode to Manual.
54 Installation
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8. Change System Control.Valves.Manual.Facility [0..100 %] to 100 and click Write.
9. Return to the Visualization screen on the System menu.
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10. Verify that flow is shown in the Visualization screen. Be sure that flow rate is greater than 60 gpm.
11. Repeat steps 5-10, but return valves and fans to automatic operation instead of manual.
12. If there are any manual valves on the facility lines, be sure that they are open.
13. If necessary, use the bleeder tool from the accessory kit to open the bleeder valve and remove
trapped air from the heat exchanger. To verify that the heat exchanger is bleeding correctly, be sure
that a few drops of facility water pass through the tube.
56 Installation
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The installation is complete.
Installation 57
Page 58
Management module
Management module overview
The HPE Adaptive Rack Cooling System has a management module, which can be accessed remotely
through the web interface. The management module analyzes, queries, and manages various
measurements and warning and alarm messages from the unit.
The management module analyzes measurements provided by each sensor or module, generates any
necessary warning or alarm messages, and then sends them to the web interface. When a new warning
or alarm occurs, the warning and alarm messages appear on the operator display as well as on the web
interface Alarms menu and Alarm History menu. If an alarm relay is installed on the HPE Adaptive Rack
Cooling System and enabled in the appropriate web interface menu, it is also activated and an audible
alarm is signaled by the internal beeper.
The management module performs regulation operations such as:
• Retrieving all sensor measurements at a rate of approximately once per second.
• Analyzing all measurements and generated alarm and warning messages
• Controlling fan speeds and water valve positions
• Sending various system values to the web interface
The web interface displays various measurements and warning and alarm messages from the
management module. Also, various system values can be set through the web interface and sent to the
management module. For more information about the web interface, see the HPE Adaptive Rack Cooling
System Web Interface User Guide.
Management module components
The management module is on the upper left of the HPE Adaptive Rack Cooling System, behind the front
door.
58 Management module
Page 59
Item Reference Description
1 C key Used to confirm warnings, critical
alarms, and configuration setting
changes, as well as to clear the
audible alarm. To confirm these
situations, press and hold the C
key for five seconds.
Alternatively, click the Clear
Alarms button on the Setup
tab>General menu on the web
interface.
2 Hard reset button Used to reset the management
module.
3 Power/alarm LED
Used to indicate the internal
status of the management
module, and to signal warnings
and critical alarms.
• If the LED is green, the
management module has
power, and conditions are
normal.
• If the LED is green and
flashing, communication is
taking place.
• If the LED is yellow, a warning
has been issued.
• If the LED is red, a critical
alarm has been issued.
• If the LED is flashing green,
yellow, and red, then a
configuration setting change
has been made. To save the
new configuration settings to
the internal memory of the
management module, press
and hold the C key for five
seconds.
• If the LED is off, the
management module has no
power.
4 SD card slot Optional use. Used for HPE
Adaptive Rack Cooling System
data logging. For more
information, see the HPE
Adaptive Rack Cooling System
Web Interface User Guide.
Table Continued
Management module 59
Page 60
Item Reference Description
5 Integrated infrared access sensor Built-in infrared proximity/door
sensor.
6 Mini USB connection Used for USB connections for
initial setup.
Accessing the management module through a terminal emulation program
Procedure
1. Verify that a mini-USB cable is connected between the management module and a host computer.
NOTE: Depending on your operating system, the USB connection might create a virtual serial
connection on your PC.
2. Launch a terminal emulation program.
For information about configuring the management module, see the HPE Adaptive Rack Cooling
System Web Interface User Guide.
3. Log in through the terminal emulation program.
Logging in through the terminal emulation program
Procedure
1. Enter the user name in the login field. The default user name is admin.
2. Enter the password in the password field. The default password is admin. The Main Menu screen
appears.
NOTE: Passwords are case-sensitive.
Accessing the management module through the web interface
Procedure
1. Launch a supported browser. The browser window appears.
2. In the Address field (Microsoft® Internet Explorer) or the Location field (Mozilla), enter one of the
following:
http://hostname[:port number]
-or-
https://hostname[:port number] (if SSL is enabled)
60 Management module
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where hostname is the IP address of the management module and port number is the port number if
using a port other than the default 80 for http and 443 for https. The login screen appears.
3. Log in through the web browser.
Logging in through the web interface
Procedure
1. Enter the user name in the User Name field. The default user name is admin.
2. Enter the password in the Password field. The default password is admin.
NOTE: Passwords are case-sensitive.
3. Choose one of the following options:
• Click Log In.
The HPE Adaptive Rack Cooling System web interface appears.
• To clear the credentials, click Clear.
Only one Admin session and one User session are supported at a time. If a second session is initiated
after successful login or a console session timeout occurs, sessions can be terminated. In both
situations, the existing session is terminated and the login screen appears. Admin session logins,
logouts, and terminations are recorded in the Events Log menu. The console session timeout length
can be enabled, disabled, or modified in the Remote Access tab. The default is 30 minutes.
Configuring the leak detection alarm relay for facility power shutdown
The connection to the alarm relays is hard wired. The ARPO cable connects to the back of the HPE
Adaptive Rack Cooling System transfer switch using a Wago connector labeled "Alarm."
Management module 61
Page 62
Operator display
Operator display overview
The operator display provides information on the system operation, adjusts cooling set points, and is
viewable on the outside of the HPE Adaptive Rack Cooling System front door. When the management
module issues an alarm or warning, the messages appear on the operator display, the web interface
Alarms menu, and the Alarm History menu.
Operator display components
The operator display on the front door of the HPE Adaptive Rack Cooling System unit has a digital touchscreen.
To scroll through the menu options, press the appropriate button on the bottom of the screen.
Warning and alarm messages
Warning and alarm messages are sent by the HPE Adaptive Rack Cooling System to the management
module. These messages appear on the operator display and on the web interface Alarms menu and
Alarms History menu.
The HPE Adaptive Rack Cooling System displays the Alarm Log screen showing the alarms.
62 Operator display
Page 63
All alarms display using the same general format:
• Device X: The device ordering number shown in the web interface. In the previous example, CMCIIIPU is Device 1 and HPE Adaptive Rack Cooling System is Device 2.
• (Device Name): The actual device label that appears in the web interface, such as CMCIII-PU.
• @N.0X: N is the CAN Bus number where the alarming device resides. 0X is the component/parameter
in the subtree.
• Subtree component name: Component under the target device that caused the alarm.
• (value): Alarm value pertaining to the component. In the previous example, AC2 Input: Alarm (0)
means the AC feed 2 is missing and causing an alarm.
The HPE Adaptive Rack Cooling System web interface shows devices associated with the alarming
device.
Operator display 63
Page 64
Frequently asked questions
HPE Adaptive Rack Cooling System frequently asked questions
Question Answer
What cooling capacity ranges
are available in the HPE
Adaptive Rack Cooling System?
Is special IT equipment required
for use with the HPE Adaptive
Rack Cooling System?
Does the additional heat from
the HPE Adaptive Rack Cooling
System increase the room
temperature?
Can the level of heat removal
be regulated in proportion to the
waste heat generated?
How is water connected to the
HPE Adaptive Rack Cooling
System unit?
The cooling capacity of the heat exchanger unit depends on the water
supply temperature and the server inlet set point. The HPE Adaptive
Rack Cooling System can cool rack-mounted components consuming
up to 150 kW of electrical power.
No. All IT equipment that uses the front-to-back cooling system can be
used without restriction in conjunction with the HPE Adaptive Rack
Cooling System.
The HPE Adaptive Rack Cooling System and IT racks are sealed as
much as possible to contain the IT heat load. There could be some
heat passed to the room through conduction of the system panels or
any gaps in between panels that are not fully sealed.
Yes, the control system automatically adjusts the water flow and air
flow to maintain IT inlet temperature set points and supply the proper
volume of air required by the system. IT heat is removed to the facility
water loop.
Water is connected to the unit using a 2-inch flexible hose with cam
and groove fittings.
HPE recommends using the HPE ARCS Water Hookup Kit, part
number P00675-B21.
Can the HPE Adaptive Rack
Cooling System operate with
the front or rear door open?
Does the HPE Adaptive Rack
Cooling System require
maintenance?
Does condensation form? During normal operation some condensation might form, but the HPE
Yes, the HPE Adaptive Rack Cooling System can operate with doors
open. However, there might be some air exchange with the room and
associated heat load to the room.
CAUTION: Opening both the front and rear doors at the same
time may compromise cooling capacity.
No, assuming that the water quality is maintained, the HPE Adaptive
Rack Cooling System is maintenance-free.
Adaptive Rack Cooling System condensation control system ensures
that the condensation does not reach any rack-mounted components.
Condensation is collected inside the HPE Adaptive Rack Cooling
System unit on the drift eliminator and gathered in the condensation
pan for draining to facility drains.
Table Continued
64 Frequently asked questions
Page 65
Question Answer
How does the HPE Adaptive
Rack Cooling System unit
control humidity?
How is IT equipment protected
from water when using the HPE
Adaptive Rack Cooling System?
What will happen if water stops
flowing to the HPE Adaptive
Rack Cooling System?
Can I install an HPE Adaptive
Rack Cooling System to an
existing rack in my data center?
The HPE Adaptive Rack Cooling System is not set up as a humidity
control device. Depending on facility water temperature vs room
conditions, the HPE Adaptive Rack Cooling System might remove
some humidity from the room through the condensation control
system.
The HPE Adaptive Rack Cooling System is physically separate from
the IT racks. Facility water enters only the HPE Adaptive Rack Cooling
System and runs through the cooling coil. Any condensation formed is
gathered in the condensate tray at the base of the unit and directed to
facility drains through the gravity drain or condensate pump. In the
event of greater water flow than what the condensate pan can handle,
the HPE Adaptive Rack Cooling System contains overflow switches
that shut off the HPE Adaptive Rack Cooling System isolation valves,
stopping facility flow and triggering an alarm.
There is a configurable low flow alarm that can be setup on the HPE
Adaptive Rack Cooling System. The system can also be configured
with a discharge air temperature alarm. With the automatic door
opening kit, the HPE Adaptive Rack Cooling System can also be
configured to open IT rack doors when HPE Adaptive Rack Cooling
System discharge air temperature exceeds a critical threshold.
No. The HPE Adaptive Rack Cooling System connects to specific
racks that support front and rear extensions.
Can I cool more than one rack
with one HPE Adaptive Rack
Cooling System?
Yes. The HPE Adaptive Rack Cooling System can cool one to four
racks, up to two on either side of the HPE Adaptive Rack Cooling
System.
Frequently asked questions 65
Page 66
Troubleshooting
HPE Adaptive Rack Cooling System troubleshooting
Issue Resolution
The water flow is low or not flowing. For more information, see "Temperature Control
settings" in the HPE Adaptive Rack Cooling
System Web Interface User Guide.
The fan speed is too low.
The fan speed is too high.
The average server intake temperature (air going
to the servers) is too high.
The average server intake temperature (air going
to the servers) is too low.
The average exhaust temperature (air coming out
of the servers) is too high.
The average exhaust temperature (air coming out
of the servers) is too low.
The settings that have been modified through the
web interface are not accepted, and the
management module LED is flashing red, yellow, or
green.
For more information, see "Cooling performance
parameters" in the HPE Adaptive Rack Cooling
System Interface User Guide.
For more information, see "Cooling performance
parameters" in the HPE Adaptive Rack Cooling
SystemWeb Interface User Guide.
For more information, see "Cooling performance
parameters" in the HPE Adaptive Rack Cooling
System Web Interface User Guide.
For more information, see "Cooling performance
parameters" in the HPE Adaptive Rack Cooling
System Web Interface User Guide.
For more information, see "Cooling performance
parameters" in the HPE Adaptive Rack Cooling
System Web Interface User Guide.
For more information, see "Cooling performance
parameters" in the HPE Adaptive Rack Cooling
SystemWeb Interface User Guide.
Press and hold the management module C key for
five seconds to confirm these settings.
The measurement readings on the management
module display or web interface seem to be
incorrect, and the management module LED is
flashing red, yellow, or green.
66 Troubleshooting
Press and hold the management module C key for
five seconds to confirm these settings.
Page 67
Specifications
HPE Adaptive Rack Cooling System specifications
Physical specifications
Item Specification
Maximum height 200.7 cm (79 in)
Maximum width 60 cm (23.6 in) maximum
Maximum depth (including the rack and rack
handle)
Maximum shipping height (on skid) 228.5 cm (90.0 in)
Maximum shipping width (on skid) 122.0 cm (48.0 in)
Maximum shipping depth (on skid) 182.9 cm (72.0 in)
Net weight 645 kg (1,423 lb)
Shipping Weight (gross with packaging) 732 kg (1,614 lb)
Electrical specifications
Item Specification
Input voltage range 380-480V, 3ph Wye (3P+N+Gnd)
Effective cooling 150 Kw at 270 lpm (71 US gal/min)
Rated current maximum 380Y/220V: 17.5A
166 cm (65.3 in) (Depth includes front and rear
extensions)
400Y/230V: 16.7A
415Y/240V: 16.0A
480Y/277V: 13.8A
Steady state current with maximum fans 380Y/220V: 13.0A
400Y/230V: 12.4A
415Y/240V: 11.9A
480Y/277V: 10.3A
Cooling medium Air and facility water/glycol
Permissible operating pressure max 8 bar (116 psi)
Table Continued
Specifications 67
Page 68
Item Specification
Maximum operating noise level (with IT rack doors
open)
Power cords IEC 60309 32/30A 220/415V 6h/IP44 (Quantity 2)
Thermal and air flow performance
Thermal and air flow performance
parameters
Air temperature—Inlet to rack-mounted
components
Chilled water temperature 7º-32°C (45º-89.6°F)
Total rack-mounted component air flow With 4 fans: up to 10,000 CFM (16,990 m3/h)
101 dBa
Maximum branch circuit size: 32A
NEMA L22-20P 277/480V 4P/5W (Quantity 2)
Maximum branch circuit size: 20A
Single rack
User adjustable up to 40ºC (104ºF)
With 3 or 4 fans: 7,500 CFM (12,743 m3/h)
Operating 150 kW maximum
Chilled water flow rate 270 l/min (71.3 US gal/min)
Chilled water pressure differential at flow
necessary to meet thermal specifications
Server heat load 150 kW maximum
Environmental specifications
Parameter Value
Room temperature:
Recommended minimum/maximum 10°C (50°F)/50°C (122°F)
Humidity:
Recommended range 8% to 90% relative humidity, non-condensing
Performance is dependent on water temperature and air
temperature set point.
15 psid
For more information, see "Determining heat load capacities"
in the HPE Adaptive Rack Cooling System Site Preparation
Guide.
Air quality
68 Specifications
Standard Hewlett Packard Enterprise
requirements
Page 69
The temperatures stated are for an elevation of -76.2 m (-250 ft) to 3,048 m (10,000 ft) above sea level.
Rack specifications
HPE ARCS 42U 600x1600mm Rack
U Height Width Depth Weight (Empty)
42U
2,004 mm
(78.9 in)
HPE ARCS 48U 600x1600mm Rack
U Height Width Depth Weight
48U
2,545 mm
(100.2 in)
600 mm
(23.6 in)
600 mm
(23.6 in)
1,600 mm (with extensions)
(63.0 in)
1,600 mm (with extensions)
(63.0 in)
158.76 kg
(350 lb)
181.44 kg
(400 lb)
Specifications 69
Page 70
Replaceable parts and maintenance and service information
Obtaining replaceable parts
For more information on replaceable parts, see the HPE Adaptive Rack Cooling System Maintenance and
Service Guide.
Procedure
1. Go to the HPE website.
2. From the top of the screen, select Support.
3. Select HPE Support Center.
4. In the product field, enter HPE Adaptive Rack Cooling System, and click Enter.
5. From the Resources section, select Manuals.
6. From the Quick jump to manuals section, select Service and maintenance information.
Maintenance and service
For information on maintenance and service, see the Hewlett Packard Enterprise website (http://
www.hpe.com).
Air and water heat exchanger maintenance
The air and water heat exchanger requires no maintenance. If particulates are present in the cooling
water, a filter must be fitted immediately upstream from the water inlet fittings. Check the functionality of
the condensation drainage system regularly. Regularly perform visual inspections for leaks (annually).
70 Replaceable parts and maintenance and service information
Page 71
Water quality and leveling requirements and condensation management
Acceptable water quality specifications
The HPE Adaptive Rack Cooling System requires facility water to meet the conditions listed in the
following table for continuous quality of performance. Hewlett Packard Enterprise recommends using a
#30 mesh filter for water supplied to the HPE Adaptive Rack Cooling System.
The following values are water quality ranges required for continuous quality of performance.
Parameter Range
pH 7-9
Specific conductance at 25ºC (77ºF) <2500 µmhos
Sulfur (SO4), total <100 ppm
Chloride (Cl) <50 ppm
Sulfide (S) <10 ppm
Hardness (CaCO3), total <200 ppm
Iron (Fe), total <3.0 ppm
Manganese (Mn), total <0.1 ppm
Bacteria <1000 CFUs/ml
Residue on evaporation <500 ppm
Turbidity 20
Corrosion inhibitor Recommended
CAUTION: Water that is out of spec might cause decreased cooling capacity or disruption in
service. The water flowing into the HPE Adaptive Rack Cooling System must meet the guidelines
stated in this guide. Damage caused by contaminated water is not covered by the HPE Adaptive
Rack Cooling System warranty.
If your water is out of range, consult a water quality expert.
Hewlett Packard Enterprise recommends using particulate filtration on the dedicated water supply system
connected to the HPE Adaptive Rack Cooling System.
Frost damage
To avoid frost damage, the water temperature must not fall below the minimum permissible temperature
of +0 ºC (+32ºF) at any point in the water cycle.
Before storage or transportation at subzero temperatures, the water cycle must be drained completely
using compressed air. Avoid setting the target temperature lower than necessary because the danger of
falling below the dew point increases as water temperature decreases. Ensure that the racks are sealed
on all sides, especially at the cable inlet to prevent condensation formation.
Water quality and leveling requirements and condensation management 71
Page 72
Water precautions
Take the following precautions during the installation of the HPE Adaptive Rack Cooling System:
• Before installing the HPE Adaptive Rack Cooling System Hook-Up Kit, ensure that all foreign matter
and particulates are flushed from the system.
• Evaluate the short-term and long-term system requirements against the available water capacity.
• Ensure that the chilled water loop is properly designed for liquid cooling systems and is separate from
the sanitary water systems, such as sink and drinking water, in your building.
• Ensure that facility managers understand the additional load being added to the chilled water supply of
the building. The added heat load might affect other components cooled by the chilled water plant.
Plumbing materials to avoid
Hewlett Packard Enterprise recommends avoiding the following materials in a closed water system.
• Oxidizing biocides
• Aluminum components
• Brass components with high levels of zinc
Leveling requirements
Use the leveling feet to adjust the height of the individual racks to match neighboring racks. Use the
leveling pads for weight distribution. Be sure that the weight is distributed evenly and the rack holes align.
Condensation management
The HPE Adaptive Rack Cooling System and CDU rack drain pans collect any condensation that forms.
When the specified condensation level in the condensation tray is reached, a sensor activates a pump
that pumps the condensation from the drain pan. A further discharge tube runs out of the system from
condensation tray to drain any excess fluid. Connect these hoses to a collection system or an external
drain.
To ensure reliable drainage:
• Ensure no kinks form in the drainage hose.
• Do not reduce diameter of drainage hose.
• Route the drainage hoses so that they always run downhill.
To avoid excessive buildup of condensate and to conserve energy, consider raising the cooling water
temperature to the necessary cooling capacity.
72 Water quality and leveling requirements and condensation management
Page 73
Websites
General websites
Hewlett Packard Enterprise Information Library
www.hpe.com/info/EIL
Single Point of Connectivity Knowledge (SPOCK) Storage compatibility matrix
www.hpe.com/storage/spock
Storage white papers and analyst reports
www.hpe.com/storage/whitepapers
For additional websites, see Support and other resources.
Websites 73
Page 74
Support and other resources
Accessing Hewlett Packard Enterprise Support
• For live assistance, go to the Contact Hewlett Packard Enterprise Worldwide website:
http://www.hpe.com/assistance
• To access documentation and support services, go to the Hewlett Packard Enterprise Support Center
website:
http://www.hpe.com/support/hpesc
Information to collect
• Technical support registration number (if applicable)
• Product name, model or version, and serial number
• Operating system name and version
• Firmware version
• Error messages
• Product-specific reports and logs
• Add-on products or components
• Third-party products or components
Accessing updates
• Some software products provide a mechanism for accessing software updates through the product
interface. Review your product documentation to identify the recommended software update method.
• To download product updates:
Hewlett Packard Enterprise Support Center
www.hpe.com/support/hpesc
Hewlett Packard Enterprise Support Center: Software downloads
www.hpe.com/support/downloads
Software Depot
www.hpe.com/support/softwaredepot
• To subscribe to eNewsletters and alerts:
www.hpe.com/support/e-updates
• To view and update your entitlements, and to link your contracts and warranties with your profile, go to
the Hewlett Packard Enterprise Support Center More Information on Access to Support Materials
page:
www.hpe.com/support/AccessToSupportMaterials
74 Support and other resources
Page 75
IMPORTANT: Access to some updates might require product entitlement when accessed through
the Hewlett Packard Enterprise Support Center. You must have an HPE Passport set up with
relevant entitlements.
Customer self repair
Hewlett Packard Enterprise customer self repair (CSR) programs allow you to repair your product. If a
CSR part needs to be replaced, it will be shipped directly to you so that you can install it at your
convenience. Some parts do not qualify for CSR. Your Hewlett Packard Enterprise authorized service
provider will determine whether a repair can be accomplished by CSR.
For more information about CSR, contact your local service provider or go to the CSR website:
http://www.hpe.com/support/selfrepair
Remote support
Remote support is available with supported devices as part of your warranty or contractual support
agreement. It provides intelligent event diagnosis, and automatic, secure submission of hardware event
notifications to Hewlett Packard Enterprise, which will initiate a fast and accurate resolution based on your
product's service level. Hewlett Packard Enterprise strongly recommends that you register your device for
remote support.
If your product includes additional remote support details, use search to locate that information.
Remote support and Proactive Care information
HPE Get Connected
www.hpe.com/services/getconnected
HPE Proactive Care services
www.hpe.com/services/proactivecare
HPE Proactive Care service: Supported products list
www.hpe.com/services/proactivecaresupportedproducts
HPE Proactive Care advanced service: Supported products list
www.hpe.com/services/proactivecareadvancedsupportedproducts
Proactive Care customer information
Proactive Care central
www.hpe.com/services/proactivecarecentral
Proactive Care service activation
www.hpe.com/services/proactivecarecentralgetstarted
Warranty information
To view the warranty for your product, see the Safety and Compliance Information for Server, Storage,
Power, Networking, and Rack Products document, available at the Hewlett Packard Enterprise Support
Center:
www.hpe.com/support/Safety-Compliance-EnterpriseProducts
Additional warranty information
HPE ProLiant and x86 Servers and Options
www.hpe.com/support/ProLiantServers-Warranties
HPE Enterprise Servers
www.hpe.com/support/EnterpriseServers-Warranties
Support and other resources 75
Page 76
HPE Storage Products
www.hpe.com/support/Storage-Warranties
HPE Networking Products
www.hpe.com/support/Networking-Warranties
Regulatory information
To view the regulatory information for your product, view the Safety and Compliance Information for
Server, Storage, Power, Networking, and Rack Products, available at the Hewlett Packard Enterprise
Support Center:
www.hpe.com/support/Safety-Compliance-EnterpriseProducts
Additional regulatory information
Hewlett Packard Enterprise is committed to providing our customers with information about the chemical
substances in our products as needed to comply with legal requirements such as REACH (Regulation EC
No 1907/2006 of the European Parliament and the Council). A chemical information report for this product
can be found at:
www.hpe.com/info/reach
For Hewlett Packard Enterprise product environmental and safety information and compliance data,
including RoHS and REACH, see:
www.hpe.com/info/ecodata
For Hewlett Packard Enterprise environmental information, including company programs, product
recycling, and energy efficiency, see:
www.hpe.com/info/environment
Documentation feedback
Hewlett Packard Enterprise is committed to providing documentation that meets your needs. To help us
improve the documentation, send any errors, suggestions, or comments to Documentation Feedback
(docsfeedback@hpe.com). When submitting your feedback, include the document title, part number,
edition, and publication date located on the front cover of the document. For online help content, include
the product name, product version, help edition, and publication date located on the legal notices page.
76 Support and other resources
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