TG-7 Cellular Series Installation & Operating Guide
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56053501 Rev A © 2022 Telguard
Appendix 3 Commercial Fire Single DACT Installation
The TG-7FS is suitable for use as a sole path cellular communicator. The TG-7FS can also be utilized
with a Telco connection. By following Telguard's installation guidelines, the installer can provide the
best conditions for a stable, sole path cellular or cellular plus Telco connection. In order to ensure that
the cellular path to be used for signaling has the highest reliability possible, it is necessary to confirm
two additional conditions, beyond what is outlined above.
Cellular Signal Strength
Installation instructions for the TG-7 Cellular Series fire communicators indicate that a cellular signal
strength of -90dBm (RSSI LEDs 4 and 5 on, with LED 3 flashing) is sufficient. While this is suitable for
, an additional level of signal integrity will minimize false alarm supervision failures caused
by interference and atmospheric fading. Because of this, it is always recommended that the device
should be installed in a location that provides the best signal strength possible.
Configure Fire Alarm Panel to Use Single Communication Device
Fire panels are typically provided with two Telco connections in order to provide multiple reporting
paths. With the TG-7 Cellular Series communicators having a single RJ-45 jack for connecting to the
panel, one of these DACT connections is not necessary for UL 864 and ULC-S559 compliance.
However, the panel will continue to supervise that unused line unless changes are made at installation
time. It is also possible to have a Telco line being used with one of the DACT connections. In that
case, it is the panel settings that determine whether that Telco line would be used as the primary or
backup communication path.
There are two methods for removing supervision alarms at the panel caused by disconnecting the
second Telco connection. Either method can be used.
1.
Disabling the Second Telco Connection
Some fire panels have a configuration mechanism to disable the second Telco connection. Once the
second Telco connection is disabled, the panel will no longer supervise the connection. This is the
preferred method of removing supervision alarms at the panel caused by removal of the second
Telco connection.
2.
Connecting the Telco Connections Together
The Telguard communicator is capable of providing dial tone to both Telco connections, if the Telco
household are connected together. If this method is used, the installer must take care to ensure
that dual path reporting is not enabled on the panel, or else simultaneous alarm reports from the
two Telco connections may interfere with each other.
Test the communicator thoroughly when using this method. Verify the panel does not report
problems with the second line, especially when the panel is reporting to the central station.
PRIMARY
DIALER
SECONDARY
DIALER
ALARM PANEL
T
R
T
1
R
1
T
R
T
1
R
1
TELGUARD
DEVICE
