•Trouble status LED

•Input status LED

•Output status LED

•Acknowledge button

•Alarm Silence button

•System Reset button

The fire system and panel are tested by the local certified fire system supplier and witnessed and certified by the local Authorities or fire marshal.

The fire system operator panel requires regular maintenance and service. For more information on the fire system operator panel component, see the Operation and Maintenance Manual for the HP Performance Optimized Datacenter 20c.

Fire suppression sequence of operations

There are two initiation sequences for the fire suppression system, automatic (VESDA) initiation and manual initiation. The fire strobe light is activated by either initiation sequence.

Personnel can determine the status of the system by the differences of the alarm horn. The following table describes the fire suppression system status.

Fire suppression

Beats per minute

Description

Personnel actions

system stages

 

 

 

 

 

 

 

Warning

20

An alarm condition exists

Personnel may investigate

Pre-discharge

120

Countdown to fire suppression

Personnel should evacuate

 

 

agent has started

 

Post-discharge

Steady

Fire suppression agent is released

Personnel should not enter,

 

 

 

contact local Authorities

The fire system operator panel indicates which initiation sequence has begun with indicator lights and a panel alarm. These signals are also available to the site BMS system, if connected.

After the fire suppression system is activated by a VESDA signal or a manual fire button, a 60-second countdown begins before the fire suppression agent is released to the HP POD 20c interior through the fire suppression system piping.

VESDA initiation

The VESDA fire suppression system signal has two levels that the system cycles through when smoke is detected.

•Level 1—Indicates that the potential for a fire is present. The strobes are illuminated and the horns are in the Warning stage. A fire has not yet been detected and personnel may investigate to determine if there is a potential for a fire or if a false indication has occurred.

•Level 2—Indicates that fire does exist. VESDA Level 1 has already have been reached, the strobes illuminate, and the horn progresses to the Pre-discharge stage. A 60-second countdown to fire suppression agent release begins and personnel should evacuate immediately.

Press the fire suppression abort button to interrupt the fire suppression release countdown. Pressing the abort button resets the countdown to 10 seconds, regardless of the amount of time elapsed from the original

60-second countdown. The abort button can be pressed multiple times to reset the fire suppression release

Life safety systems 23