HVAC
This is the purpose of electric room split units.
What is
Transfer heat generated by electric room equipment from the electric room to outside the building?What are DAHU sumps?
This is what DAHU stands for.
What is
Data center
Air
Handling
Unit?
These loads are supported by CUPS 2.2A.
What are AMCOP, BACOP, USB controls, and COP controls for 2.2A and 2.2B
Production racks are used to store data for this type of hosts.
What are Amazon hosts?
VFDs control the speed of exhaust fans by sending this type of output signal within this voltage range.
2-10Vdc analogue signal?
These are the main advantages of positive displacement pumps over centrifugal pumps
What are
consistent output flow rate and can be used in high pressure systems?
Impurities in a pure substance will cause it's boiling point to change in this way.
What is decrease?
This type of batteries are used in IAD163's CUPS.
What are Lithium-Ion batteries?
The blast radius for maintenance that will de-energize a network rack will include these racks.
What are each EC2 and production rack that is connected to the effected network rack?
This is how you access the Mezzanine level at IAD163.
What are fixed ladders leading up from the DAHU galleries?
An expansion tank is connected to the IW piping after this IW component.
What are IW pumps / IW pump discharge valve?
These are the phase and location of DAHU 021.
What is DAHU 1.3-21, DAHU GALLERY 1.2?
This is where the HUPS is located.
Where is the House Electric Room?
These are the locations for our SToRM racks.
Where are
02-02-007-11
01-01-002-42?
Average static plenum pressure has fallen below its lower setpoint. This is how BMS will respond to raise the average static plenum pressure.
What is The
two supply plenum header static pressure set-points at each AC shall be reset based on the RSD positions within its area as described below. The AC shall
then pass these static pressure set-points to the MCC via 2-10Vdc signal, where 2vdc equals the minimum value and 10vdc equals the maximum value. The MCC shall evaluate the set-points for each of the two supply plenums in all areas, and select the highest value from each side of the data hall and pass it back to the ACs. Each AC shall then calculate a PID loop output and command the DAHUs in its area to modulate their fan speed to maintain the respective plenum set-points. The fan control strategy in this section shall be applied to each side of the data hall area?
This is how IW operations will change after a BMS control panel failure.
What is the IW system shall continue in Tank Water Mode, The pump skid(s) shall run and maintain discharge pressure via the onboard PLC, Tank Fill Valves shall close to prevent overflowing the tanks, Utility supply valve shall open in parallel with tank operation?
This is how long it will take for all of the DAHUs in an area to change from FREE COOLING mode to EVAP mode.
What is 60 seconds/ DAHU
At least 480 seconds?
163's CUPS will run at 150% rated power before shutting down on overload for this long.
What is 10 seconds?
This type of event is triggered when 5 PROD racks lose connection within 5 minutes.
What is a seismo event?
This is how BMS operations will change if an MCC loses power.
Area controllers will calculate PID loops like normal. MCCs will not return a 'worst case scenario'. ACs will no longer be limited by maximum deviation from worst case scenario and will operate off of their individually calculated PID loop.
This is what happens if all IW pumps failed during normal operation and no operator action is taken.
What is Supply water pressure drops below 20 PSI, this triggers a latched "loss of tank flow" alarm. Utility water mode activates. Pump skid PLC disables. Utility supply valves open. All tank fill valves close.
This is one possible cause for Flush and Dump valves for a DAHU to be open for longer than 5 minutes.
What is high sump conductivity?
This is how you should combat a fire in a UPS battery cabinet.
What is de-energize if safe, and evacuate?
A temperature change of this many degrees over a 30 minute period can trigger a thermal seismo event.
What is >20°F?