Bacharach GDC-150 Manual De Propietario
GDC-150 Operation Manual
10
5209-9000 Rev 0
After installation, simply locate the lid hinges over the installed base hinges and pull
toward you. The hinges should easily “snap” back into place.
By design, the overlapping door of the PVC enclosure makes it inherently drip proof,
although it is not water tight or dust tight. The optional water-tight enclosure has four
screws for sealing the door to the base. Refer to Figure 1-2 on page 2.
toward you. The hinges should easily “snap” back into place.
By design, the overlapping door of the PVC enclosure makes it inherently drip proof,
although it is not water tight or dust tight. The optional water-tight enclosure has four
screws for sealing the door to the base. Refer to Figure 1-2 on page 2.
3.3. Sensor Mounting Height Recommendations
Some toxic gases such as ammonia (NH
3
) and combustible gases such as methane
(CH
4
) are lighter than air, therefore the sensor/transmitter should be installed on or
near the ceiling.
Some toxic gases such as carbon monoxide are only slightly lighter than air, therefore
the sensor/transmitter should be installed at approximately 4’ to 6’ from the floor.
Oxygen sensors should be installed at approximately 4’ to 6’ from the floor.
For toxic gases, combustible gases, and vapors that are heavier than air, the
sensor/transmitter should be installed with the sensor opening at 6” from the floor.
Although most refrigerants (e.g., Freons) are heavier than air, some applications may
be better suited to a slightly higher mounting height for refrigerant sensors.
Some toxic gases such as carbon monoxide are only slightly lighter than air, therefore
the sensor/transmitter should be installed at approximately 4’ to 6’ from the floor.
Oxygen sensors should be installed at approximately 4’ to 6’ from the floor.
For toxic gases, combustible gases, and vapors that are heavier than air, the
sensor/transmitter should be installed with the sensor opening at 6” from the floor.
Although most refrigerants (e.g., Freons) are heavier than air, some applications may
be better suited to a slightly higher mounting height for refrigerant sensors.
NOTE: If the area to be monitored is a wet environment, water-tight
enclosures should be used. The water-tight enclosure must be installed
using the indicated holes or it may leak. Damage caused by leaking
because of improperly installed enclosures is not covered under
warranty. If the area to be monitored has the potential for water spray, a
splash guard should be used to protect the sensor.
enclosures should be used. The water-tight enclosure must be installed
using the indicated holes or it may leak. Damage caused by leaking
because of improperly installed enclosures is not covered under
warranty. If the area to be monitored has the potential for water spray, a
splash guard should be used to protect the sensor.
3.4. Wiring the GDC-150 for Power
If powering the GDC-150 with 24 VAC, use terminals 1 and 2. If powering the
GDC-150 with 24 VDC, the positive (red) wire should be connected to terminal 2 and
the negative (black) wire should be connected to terminal 3. The signal wire is always
connected to terminal 4. See Figure 3-4 for proper wiring examples and Figure 3-5
for improper wiring examples.
Terminals 5, 6, and 7 are used only if the relay option has been supplied. Double
check the relay ratings in the specifications section of this manual before operation.
For normal operation, the relay control wiring should be connected to N/C and COM
(fail-safe operation is used).
GDC-150 with 24 VDC, the positive (red) wire should be connected to terminal 2 and
the negative (black) wire should be connected to terminal 3. The signal wire is always
connected to terminal 4. See Figure 3-4 for proper wiring examples and Figure 3-5
for improper wiring examples.
Terminals 5, 6, and 7 are used only if the relay option has been supplied. Double
check the relay ratings in the specifications section of this manual before operation.
For normal operation, the relay control wiring should be connected to N/C and COM
(fail-safe operation is used).