Manual fire pulls

The HP POD 40c G2 includes two fire pulls. One fire pull is located next to the personnel access door and the second fire pull is located next to the emergency exit.

Manually activating a fire pull does the following:

•Activates the POD fire alarm system horn and strobe lights

•Triggers a fire alarm signal to the BMS in the fire box (on page 63) and activates a 30-second delay before releasing the fire suppression agent

IMPORTANT: The fire suppression abort button will not delay the release of the fire suppression agent if a manual fire pull is initiated. All personnel should evacuate immediately.

Fire alarm indicators

Upon activation of a fire alarm within the HP POD 40c G2, the following alarms alert personnel:

•Strobe lights

o Internal—The HP POD 40c G2 includes one fire strobe light located in the cold aisle.

o External—The HP POD 40c G2 includes one fire strobe light located at the standard personnel entry door.

o Optional—There is an additional fire strobe light located in the cold aisle that can be connected to the site fire alarm system at the expense of the customer.

•Audible horn—The HP POD 40c G2 includes two integrated horns. One horn is located on the internal strobe light and the second horn is located on the optional strobe light.

•Alarm within the ECS—The ECS system notifies you of a fire alarm condition with an alarm alert on the ECS screen.

VESDA air sampling smoke detection system

CAUTION: Excess dust within the HP POD 40c G2 can cause the VESDA smoke detector to trigger a fire alarm.

The VESDA system features a single zone laser scan early warning smoke detector to provide the earliest warning of a potential fire.

The orange VESDA conduits that run throughout the HP POD 40c G2 include inlets for smoke sampling. The VESDA uses a high-efficiency aspirator to continuously draw in air from the HP POD 40c G2 and circulate the air through a dual-stage filter:

•Stage 1—Dust and dirt are removed from the air sample.

•Stage 2—Remaining contaminants in the air sample are removed with an ultra-fine filter.

After the air passes through the dual-stage filter, it enters a calibrated detection chamber where a laser scans the air sample for the presence of smoke. When the smoke concentration reaches the first setpoint, the VESDA system will send an alarm signal indicating that a fire might exist. When the smoke concentration reaches the second setpoint, the VESDA system indicates that a fire does exist in the HP POD 40c G2 and sends an activation signal to the fire suppression system.

Life safety systems 19