User Manual

8
Once latched in, power will need to be interrupted to un-latch the alarm condition. The
GD-2B can be modified, either before or after installation, to have a latching output.
Locate the blue jumper labeled “LATCH IN” on the printed circuit board on the left
hand side under the buzzer. Remove this jumper and the unit will stay in alarm (once
gas has exceeded the pre-set threshold) until the power is interrupted.
3. In the configuration, as shipped from the factory, the GD-2B has an internal audible
sounder. A jumper on the circuit board can be removed to disable the internal audible
sounder. If the jumper on the circuit board is removed the GD-2B should be connected
to a Fire Alarm/Burglary Control Panel with an audible device that provides at least 85
DB sound output. The GD-2B can be modified, either before or after installation, to
disable the internal audible sounder. Locate the blue jumper labeled “BUZZER” on the
printed circuit board on the left hand side under the buzzer. Remove this jumper to
disable the internal audible sounder.
4. In the configuration, as shipped from the factory, the GD-2B is used with normally
open initiating circuits. A jumper on the circuit board can be removed to use the GD-2B
with normally closed initiating circuits. When using the GD-2B with normally closed
initiating circuits, remove the blue jumper labeled “ALARM RELAY” on the top side the
printed circuit board under the buzzer.
ALARMS
Immediately exit any environment if there is an alarm condition on the detector. Failure to
do so may result in sickness or death.
The final alarm is determined by the configuration of the control panel, with the GD-2B
only switching its relay to actuate the panel. Do not connect the GD-2B to Fire Alarm
Circuits, or Burglar Alarm or other signals. The illumination of the red (ALARM) light on
the GD-2B indicates the alarm condition. When an alarm occurs immediately evacuate
the premises and seek assistance.
This detector will only indicate the presence of combustible gas at the sensor.
Combustible gas may be present in other areas. Accommodation spaces should be well
ventilated when household cleaning supplies or similar contaminants are used.