Kidde GSA-T3T4 - User Manual

© 2017 United Technologies Corporation 1 / 2 P/N 3102073-EN • REV 005 • ISS 22SEP17
GSA-T3T4 Temporal Pattern
Generator Installation Sheet
Description
The model GSA-T3T4 Temporal Pattern Generator is an addressable
device that generates sound patterns for fire or carbon monoxide (CO)
alarms for compatible audible (sounder) bases. Table 1 and Figure 1
below show the pattern characteristics.
Table 1: Temporal patterns
Name
Code
For
Description of pattern per cycle
TC3
NFPA 72
Fire
0.5 s on, 0.5 s off, 0.5 s on, 0.5 s off,
0.5 s on, 1.5 s off
TC4
NFPA 720
CO
0.1 s on, 0.1 s off, 0.1 s on, 0.1 s off,
0.1 s on, 0.1 s off, 0.1 s on, 5.1 s off
Figure 1: Temporal pattern wavelengths
The GSA-T3T4 module uses two addresses on the signaling line
circuit (SLC). Address 1 is tied to Channel 1; Address 2 is tied to
Channel 2. Channel 1 always has the highest priority.
Channel selection
The control panel sends synchronization and channel commands to
the GSA-T3T4. Channel selection determines the pattern. The control
panel can also send silencing commands to the GSA-T3T4.
During system initialization, the SLC controller determines which
pattern plays on each channel, depending on the marketplace setting.
For example, in the US and Canadian marketplaces, a fire alarm takes
priority over a CO alarm, so the TC3 pattern is assigned to Channel 1.
Settings for other markets are governed by local requirements.
Synchronization
When an alarm condition occurs, the detector notifies the panel and
the panel commands the GSA-T3T4 to activate the T3T4 riser. The
GSA-T3T4 generates the appropriate pattern and synchronizes all the
audible bases on a single SLC. The SLC controller synchronizes
multiple GSA-T3T4s installed on the same SLC.
Silencing the GSA-T3T4
The alarm signal continues until the system resets or is manually
silenced. The GSA-T3T4 can receive silencing commands from the
control panel.
LEDs
Diagnostic LEDs provide visible indication of the status of the module
through the cover plate:
• Normal: green LED flashes
• Alarm/active: red LED flashes
Personality code
The default personality code is 70, Unsupervised Relay Output. This
configures the GSA-T3T4 to select the desired sound pattern based on
the activated channel.
Installation
Install this device in accordance with the latest editions of
CAN/CSA-6.19, CAN/ULC-S524, CSA C22.1, NFPA 72, NPFA 720,
and the local authority having jurisdiction.
Caution: Electrical supervision requires the wire run to be broken at
each terminal. Do not loop the signaling circuit field wires around the
terminals.
Notes
• The GSA-T3T4 Temporal Pattern Generator is shipped from the
factory as an assembled unit; it contains no user-serviceable parts
and should not be disassembled.
• Only one module is required for each T3T4 riser.
• When determining allowable wire resistance, refer to the voltage
rating of the module, the signaling appliance, and the control panel
specifications.
• Wire in accordance with NFPA 70 National Electrical Code or
CSA C22.1 Canadian Electrical Code.
• Each terminal on the GSA-T3T4 module is limited to a single
conductor.
• Strip 1/4 in. (about 6 mm) from the ends of all wires that connect to
the terminal block of the module. Exposing more bare wire may
cause a ground fault and exposing less wire may result in a faulty
connection.
To install the module:
1. Verify that all field wiring is free of opens, shorts, and ground
faults.
2. Make the wiring connections as shown in Figure 3.
3. Install the module as shown in Figure 2. See “Specifications” on
page 2 for compatible electrical boxes.
Figure 2: Mounting in a single-gang box
(1) Compatible electrical box
(2) GSA-T3T4
(3) Wall plate
(4) #6-32 × 1/2 screws
(5) #4-24 × 1/2 screw
TC4 (5.8 s)
TC3 (4.0 s)
(1)
(2)
(3)
(4)
(5)
(4)

Summary

Description and Functionality

Channel Selection

Defines how the control panel directs synchronization and sound patterns via channels.

Synchronization

Explains how the GSA-T3T4 synchronizes audible bases during an alarm condition.

Silencing

Details how the GSA-T3T4 accepts silencing commands from the control panel.

LED Status Indicators

Describes the status indication provided by the module's diagnostic LEDs.

Personality Code Configuration

Installation Procedures

Electrical Supervision Caution

Cautionary note on wiring practices for proper electrical supervision.

Key Installation Notes

Important information regarding shipping, serviceability, and wiring standards.

Mounting and Wiring Steps

Step-by-step guide for mounting and wiring the module.

Technical Specifications and Compliance

Operating Specifications

Details on operating voltage, current consumption, and output ratings.

Wiring and Compatibility

Information on wire size, circuit designation, and compatible audible bases.

Environmental and Storage Conditions

Specifies operating temperature, humidity, and storage requirements.

Regulatory Compliance

Lists UL rating, North American standards, FCC, and Industry Canada compliance.

Overview

1. Function Description
2. Important Technical Specifications
3. Temporal Patterns
4. Operating Voltage
5. Current Consumption
6. Output Rating
7. Wire Size
8. Circuit Designation
9. Compatible Audible Bases
10. Electrical Box Compatibility
11. Operating Environment
12. Storage Temperature
13. Regulatory Information
14. Usage Features
15. Wiring Diagram (Figure 3)
16. Mounting (Figure 2)
17. LEDs
18. Maintenance Features

The Kidde GSA-T3T4 Temporal Pattern Generator is an addressable device designed to produce specific sound patterns for fire and carbon monoxide (CO) alarms when connected to compatible audible (sounder) bases. It functions by generating distinct temporal patterns, TC3 for fire alarms and TC4 for CO alarms, as defined by NFPA 72 and NFPA 720 respectively.

Function Description

The GSA-T3T4 module operates on a signaling line circuit (SLC) and utilizes two addresses: Address 1 for Channel 1 and Address 2 for Channel 2, with Channel 1 always having the highest priority. The control panel sends synchronization and channel commands to the GSA-T3T4, which then determines the appropriate sound pattern based on the activated channel and marketplace settings. For instance, in US and Canadian markets, the TC3 fire alarm pattern is assigned to Channel 1 due to its priority over CO alarms. The device synchronizes all connected audible bases on a single SLC, and multiple GSA-T3T4s on the same SLC are also synchronized by the SLC controller. The alarm signal continues until the system is reset or manually silenced, as the GSA-T3T4 can receive silencing commands from the control panel.

Important Technical Specifications

Temporal Patterns:

• TC3 (Fire - NFPA 72): 0.5 s on, 0.5 s off, 0.5 s on, 0.5 s off, 0.5 s on, 1.5 s off (4.0 s cycle)
• TC4 (CO - NFPA 720): 0.1 s on, 0.1 s off, 0.1 s on, 0.1 s off, 0.1 s on, 0.1 s off, 0.1 s on, 5.1 s off (5.8 s cycle)

Operating Voltage:

• Riser: 16 to 33 VDC
• SLC: 15.2 to 19.0 VDC

Current Consumption:

• Standby: 53 µA
• Alarm TC3: 373 µA
• Alarm TC4: 530 µA

Output Rating:

• 3.5 A max. (Actual value limited by system power outputs)

Wire Size:

• 12 to 18 AWG (0.75 to 2.50 mm²)

Circuit Designation:

• Signaling line circuits (SLC) are Style 4 (Class B) or Style 6 (Class A)

Compatible Audible Bases:

• GSA-SBT, SIGA-AB4G-LF, SB4U-LF

Electrical Box Compatibility:

• Compatible: 2-1/2 in. (64 mm) deep single-gang box
• Recommended: 4 in. square box 1-1/2 in. (38 mm) deep with single-gang trim ring

Operating Environment:

• Temperature: 32 to 120°F (0 to 49°C)
• Relative Humidity: 0 to 93% noncondensing

Storage Temperature:

• -4 to 140°F (-20 to 60°C)

Regulatory Information:

• UL Rating: Regulated 24 DC, UL: Indoor
• North American Standards: ANSI/UL 864, ANSI/UL 2017, CAN/ULC-S527
• FCC Compliance: This device complies with part 15 of the FCC Rules. Operation is subject to two conditions: (1) no harmful interference, and (2) acceptance of any interference received, including undesired operation.
• Industry Canada Compliance: This Class A digital apparatus complies with Canadian ICES-003.

Usage Features

The GSA-T3T4 is shipped as an assembled unit and is not designed for user disassembly or servicing. Only one module is required per T3T4 riser. When installing, it is crucial to adhere to wiring guidelines, including stripping 1/4 inch (about 6 mm) from wire ends to prevent ground faults or faulty connections. Electrical supervision requires the wire run to be broken at each terminal, avoiding looping field wires around terminals. The module's personality code defaults to 70 (Unsupervised Relay Output), which configures it to select the sound pattern based on the activated channel.

Wiring Diagram (Figure 3):

• Terminals 1 & 2: Connect to a power-limited and regulated 24 VDC primary or auxiliary power supply (UL/ULC Listed for fire protective signaling systems). Additional equipment is required for supervision (Class E).
• Terminals 3 & 4: AUX_RISER.
• Terminals 5 & 6: TCDR_RISER, for connection to audible bases. Terminal 5 connects to the positive (+) power or signal terminal of the base, and terminal 6 connects to the negative (-) power or signal terminal of the base.
• Terminals 7 & 8: SLC connections. Terminal 7 connects to the SLC from the previous device, and terminal 8 connects to the SLC to the next device.

Mounting (Figure 2):

The module is designed for mounting in a single-gang electrical box. It includes a wall plate and requires #6-32 x 1/2 screws for the module and #4-24 x 1/2 screws for the wall plate.

LEDs:

Diagnostic LEDs provide visual status indication through the cover plate:

• Normal: Green LED flashes
• Alarm/Active: Red LED flashes

Maintenance Features

For Canadian installations, it is essential to follow CAN/ULC-S536 Standard for the Inspection and Testing of Fire Alarm Systems. Before installation, verify that all field wiring is free of opens, shorts, and ground faults. The device contains no user-serviceable parts and should not be disassembled. For specific application details, users should refer to the installation sheet for the audible base or contact the Application Engineering department.

Kidde GSA-T3T4 Specifications