Fire Alarm Systems

Question 1

In an addressable system initiating devices are connected to the FACP through a line referred to as?

Answer 1

DCL (Data communication Link) or
SLC (Signalling Line Circuit)

Question 2

In an addressable system, Modules are connected to the FACP through a line referred to as a

Answer 2

DCL OR SLC

Question 3

In a conventional fire alarm circuit, the name of the small current that flows to indicate circuit integrity under normal conditions is called?

Answer 3

Supervisory current

Question 4

The two types of fire alarm control units are?

Answer 4

Single stage and two stage

Question 5

Relay modules are used for the control of?

Answer 5

Ancillary devices/ circuits

Question 6

Examples of Ancillary devices are?

Answer 6

Magnetic door holders
Fan contractors
Fire pumps

Question 7

What is the primary purpose of a Fire alarm circuit

Answer 7

To save lives!

Question 8

Isolation modules are used to ?

Answer 8

Isolate a portion of the SLC (signalling line circuit)

Question 9

4 conditions of a fire alarm system are?

Answer 9

Normal
Trouble
Supervisory
Alarm

Question 10

Monitor modules are used to monitor?

Answer 10

Conventional devices/circuits

Question 11

In a conventional fire alarm system, what is used to provide circuit supervision?

Answer 11

End of Line Resistor (EOL)

Question 12

Conventional initiating circuits end with?

Answer 12

End of line resistors (EOL)

Question 13

Conventional monitoring circuits end with?

Answer 13

End of Line Resistors (EOL)

Question 14

A conventional fire alarm system does not provide identification of the specific device that initiated the alarm. What does it identify?

Answer 14

It will provide identification of the Zone (area) the initiating device is located

Question 15

2 types of heat detectors are?

Answer 15

Fixed and Rate of rise

Question 16

Conventional NAC circuits end with?

Answer 16

End of Line Resistors (EOL)

Question 17

In addressable circuits what is polarity conscious?

Answer 17

All initiating and monitoring devices

Question 18

A SLC (signalling line circuit) or a DCL (Data communication link doesn’t end with a ?

Answer 18

End Of Line Resistor

Question 19

Addressable NAC circuits end with a?

Answer 19

End of line resistor

Question 20

When a heat detector pull station or a smoke detector is activated in a single stage fire alarm system what will initiate?

Answer 20

Audible evacuation signal

Question 21

On a two stage fire alarm system if 5 minutes pass and the signal has not been acknowledged what happens?

Answer 21

An alarm signal will activate

Question 22

When a heat detector pull station or smoke detector is activated a two stage fire alarm system will initiate a?

Answer 22

Audible alert signal

Question 23

When wiring a SLC or DCL what terminal do you leave on!

Answer 23

The B terminals

Question 24

List 3 sprinkler tree devices and the conditions each device will initiate through the FACP?

Answer 24

Gate valve- supervisory
Low water pressure switch- supervisory
Water flow switch- ALARM

Question 25

In an addressable system if a device address is wrong, what condition will be displayed?

Answer 25

Trouble

Question 26

In a conventional fire alarm circuit what is polarity sensitive?

Answer 26

Smoke detectors and Notification devices

Question 27

What can be used to de energize an ancillary device?

Answer 27

Addressable relay module

Question 28

What can be used to interconnect a conventional device/ circuit to an addressable fire alarm system?

Answer 28

Addressable monitoring module

Question 29

What style is a Class A system?

Answer 29

Style 6

Question 30

What style is a class B system?

Answer 30

Style 4

Question 31

What are the 5 classes of Fires?

Answer 31

Class A = ordinary combustibles Class B= Flammable liquids Class C= Electrical Class D= Combustible metals Class K= cooking fires

Question 32

The 3 major types of fire alarm systems are?

Answer 32

Conventional Multiplex Addressable

Question 33

What are some notification appliances?

Answer 33

Strobes, bells horns and speakers

Question 34

What are some visual appliances?

Answer 34

Strobes would be the only visual

Question 35

What are some initiating devices?

Answer 35

Smokes, pull stations, heat detectors

Question 36

3 half tones a pause and then repeats is?

Answer 36

Temporal 3

Question 37

Pressure switch has what kind of contacts?

Answer 37

N/C contacts. Uses pressure to open it

Question 38

Flow switch uses what kind of contact!

Answer 38

N/O contact! When water flows it closes causing an alarm

Question 39

What contact does the gate valve use?

Answer 39

N/C held open contact, when closed it sends a supervisory alarm to the FACP

Question 40

What are NAC circuits?

Answer 40

Notification Appliance circuits (Audible or Visual)

Question 41

What are the color codes of resistors?

Answer 41

BBROYGBVGW GS and nothing Black 0 Brown 1 Red 2 Orange 3 Yellow 4 Green 5 Blue 6 Violet 7 Grey 8 White 9 Gold +/- 5% Silver +/- 10% No color = +/- 20%

Question 42

What are two types of basic smoke detectors?

Answer 42

Photoelectric and ionization

Question 43

Automatic devices are?

Answer 43

Heat and smoke detectors and The flow switch on the sprinkler tree

Question 44

What are manual devices?

Answer 44

Pull stations either single or two stage