HP Performance Optimized Data Center (POD) 240a Adiabatic units, Controlling the hot aisle fans

Page 60

Callout	Sensor	Quantity per	Description
		hot aisle

1	Temperature sensors	3	• Monitor the temperature in various locations
			throughout the hot aisle of the HP POD 240e
			NA
			• Report data to the ECS

2	Hot aisle pressure sensor	12	• Monitor and report hot aisle pressure
	probes		• Report data to the AHU controllers

3	Hot aisle temperature sensor	12	• Monitor and report hot aisle temperature
	probes		• Report data to the AHU controllers

Outdoor air sensors

There is one sensor mounted on each Adiabatic unit that monitors the temperature and humidity of the outdoor air. Each sensor reports the data to the AHU controller.

Adiabatic units

Each IT section of the HP POD 240e NA has six Adiabatic units that maintain the differential pressure and temperature parameters within the HP POD 240e NA.

For more information about the required power for the Adiabatic units, see "Power distribution: Adiabatic system (on page 28)."

Controlling the hot aisle fans

There are 10 exhaust fans located in the hot aisle of the HP POD 240e NA.

Side view shown

The HP POD 240e NA fans operate at variable speeds (0-100%) to maintain predetermined parameters programmed into the AHU. For more information about the fan mode, see "AHU theory of operation (on page 62)".

Environmental control system 60

Image 60

Contents Abstract Part Number November EditionPage Contents HP POD 240e NA optional components Power feeder pull boxes Air filter sensorRegulatory compliance notices Before you contact HP HP contact informationOperator safety Component safetyOverview Before you beginPreventative maintenance Fire detectionEnvironmental considerations Component identification Structural component identificationParts and part number identification Component DescriptionLife safety component identification Exit sign locationsComponent identification Component identification Electrical power component identification End view shown Component DescriptionMain breaker locations Reminds you that the electrical panels must only be End view shown Callout Electrical safety label Description Electrical power disconnect map label locationControl cabinet component identification UPSSecurity component identification IT section B control cabinet Component DescriptionRacks Top view shown Component DescriptionLife safety systems Life safety overviewEPO system ECS touchscreen and EPO indicators Battery backup during an EPO event Component Indicator color DescriptionEPO modes EPO accidental activationFire detection system Vesda air sampling smoke detection systemManual fire pulls Fire alarm panel Fire alarm indicatorsFire detection sequence of operations Emergency egress Power, electrical, and controls Power safetySite electrical system Grounding and bondingCapacities Lightning protectionPower feeders Electrical panel labelsPower distribution electrical busway system Power distribution Adiabatic systemWire color code End view shown Feature SpecificationPanel schedules Wire color Description Electrical buswaysPage Rack power Drop boxesFeature Specification LightingUsing the ECS Environmental control systemEnvironmental control system overview Facility connections to the ECS Components of the ECSSatellite control boxes Connecting to the ECS through the demarcation box Connecting to the ECS through connection portalsManaging the ECS from the HP POD 240e NA Configuring the ECS Environmental control system Logging in remotely to the ECS Locating the ECS IP address Click ConnectPassword protected Navigating the ECS interfaceLogging in to the ECS touchscreen ViewTop screen Callout Icon name DescriptionCA RH AD detail screen Information displayed DescriptionAisle in relation to the external ambient Charts screen AD detail screen displays the following alarm conditionsAlarm displayed Description Operation displayed DescriptionPsychrometric chart Alarms chart Electrical Cabinets screenControls Network screen Alarms screen Stats screen Indicates the cold aisle combination temperature Configure Control settingsHMI settings Setting the Min and Max temperature and RH setpoints Setting the Min and Max range for alarmsManaging the ECS system US Customary o MetricSetting the offset alarm Setting the IP addressForcing an alarm Temperature and pressure sensors Maintaining the ECS parametersCallout Sensor Quantity per Description IT section Adiabatic units Controlling the hot aisle fansCallout Sensor Quantity per Description Hot aisle AHU system OverviewAdiabatic components AHU theory of operation Adiabatic mediaAHU system AHU system Static pressure control IT networking and communications NetworkingConnection portals Demarcation box Fire box Adding a phoneIT networking and communications Standard components Air filter sensorPower feeder pull boxes Optional componentsHP POD 240e NA optional components Specifications General specificationsRack specifications Features SpecificationsEnvironmental specifications Maintenance Periodic maintenancePreparing the Adiabatic units for winter Component Description Supply header gravity drain Adiabatic unit by unit blowdown Supply header blowdown Power up procedure Standard power up procedurePower up checklist Standard power up procedureCold weather power up procedure ElectricalCold weather power up checklist Cold weather operation Power down procedure Full power down procedureContacting HP Before you contact HPHP contact information Safety and NEC compliance Regulatory compliance noticesHP POD 240e NA regulatory compliance Safety and regulatory compliance Warranty informationGlossary Power distribution unit North American Outside airProgrammable logic controller Performance-Optimized DatacenterPower usage efficiency Relative humidity Enclosure of sufficient size to enable entry of personnelUninterruptible power system Pounds per square inchDocumentation feedback Index Index Safety, component Safety, power connections Warranty Winterize, Hvac units 74 wire color code

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