Subsequent alarms

Table 28. Operational priority

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Current state of system

 

 

 

 

 

 

 

 

 

 

 

Manual

Automatic

 

System self-test

Panel lamp test

HVAC

 

 

override

smoke alarm

 

(nondedicated)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Manual override

N/A

Actuator is

 

System self-test

Panel lamp test

Actuator is

 

 

overridden.

 

ends.

can continue.

overridden.

 

 

 

 

 

 

Affects all non-

N/A

 

System self-test

Panel lamp test

HVAC system

 

 

overridden

 

 

ends.

ends.

operation is

 

Automatic

actuators.

 

 

 

 

completely

 

 

 

 

 

 

suspended.

 

smoke alarm

 

 

 

 

 

systemof

 

 

 

 

 

Only smoke

 

System self-test

System self-test

 

N/A

Allowed. No

 

 

System self-test

 

 

 

 

 

 

 

purge operation

 

 

 

 

 

 

 

is allowed.

state

System self-test

to start.

to start.

 

 

change.

not used.

 

is not allowed

is not allowed

 

 

Next

 

 

 

 

 

 

 

 

Panel lamp test

Panel lamp test

 

Panel lamp test

N/A

Panel lamp test

 

 

 

 

Panel lamp test

is allowed to

is not allowed

 

is allowed to

 

is allowed to

 

 

start.

to start.

 

start.

 

start.

 

 

HVAC system

HVAC opera-

 

System self-test

HVAC opera-

N/A

 

HVAC

running, but

tion is not

 

not used.

tion continues.

 

 

overridden

allowed to start.

 

 

 

 

(nondedicated)

 

 

 

 

actuator will be

 

 

 

 

 

 

 

 

 

 

 

 

 

 

affected.

 

 

 

 

 

 

 

 

 

 

 

 

 

Subsequent alarms

(UL 864: 49.8)

When multiple input signals are received from more than one smoke zone to initiate different automatic smoke-control sequence(s), the smoke- control system shall continue automatic operation in the mode determined by the first signal received.

Once a floor-based smoke alarm is activated, the system will react as if that is the only alarm and will ignore all subsequent alarms, The supply, return and stair shaft smoke alarms are still allowed to affect the supply, return and stair shaft supply fans. Any reaction can be overridden at the smoke control panel.

To ignore all subsequent floor alarms, the program fragment in Figure 53 on page 102 has been tested and works correctly. Once an alarm is triggered by any floor-based smoke alarm, it will be the only smoke alarm reaction allowed. When the first alarm is received, it triggers two events; it writes the floor of the smoke alarm to analog variable 1 and sets a binary variable to hold the output at that value. That binary variable is held until all alarms are cleared by the fire smoke control system.

BAS-APG001-EN

101

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Trane Engineered Smoke Control System for Tracer Summit, BAS-APG001-EN manual Subsequent alarms, Operational priority, 101

BAS-APG001-EN, Engineered Smoke Control System for Tracer Summit specifications

The Trane Engineered Smoke Control System is an advanced solution designed to enhance safety and efficiency in buildings by effectively managing smoke during emergency situations. Specifically tailored for integration with the Tracer Summit Building Automation System, the Trane Engineered Smoke Control System (BAS-APG001-EN) combines cutting-edge technologies with user-friendly features, empowering facility managers to maintain optimal air quality and ensure occupant safety.

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