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Macurco GBC Manual
1 General Safety Information
1.1 List of warnings
Each person using this equipment must read and understand the information in this User manual
before use. Use of this equipment by untrained or unqualified persons or use that is not in accordance
with this user manual, may adversely affect product performance.
GBC may not function effectively below 32 °F (0 °C) or above 125 °F (51 °C). Using the equipment
outside of this temperature range may adversely affect product.
Immediately exit any environment that causes an alarm condition on the sensor.
Do not disassemble unit or attempt to repair or modify any component of this instrument. This
instrument contains no user serviceable parts, and substitution of components may adversely affect
product performance and void product warranty.
High voltage terminals (120/240 VAC) are located within this detector, presenting a hazard to service
technicians. Only qualified technicians should open the detector case and service the internal circuits.
Ensure power is de-energized from the detector relays prior to servicing the unit. Failure to do so may
result in electrical shock.
2 Use Instructions and Limitations
The Gas Boiler Controller used in conjunction with Macurco Gas detectors is used to shut down boilers in the
presence of gas. Using a single detector or up to four gas detectors the controller can control up to eight dry contact
outputs. These outputs are designed to shut down the boiler system upon the detection of carbon monoxide and/or
combustible gases such as natural gas or propane. In the event of a gas alarm the GBC will engage the relay to turn
off the necessary appliance. If the detectors are programmed in latching mode, the GBC will remain in alarm until
the reset button has been pressed. If gas is still present above the Fan Relay Setting value, the GBC will go into
alarm and latch again. The Gas Boiler Controller has a green power light, a red alarm light, a boiler reset button, and
an audible buzzer.
Each person using this equipment must read and understand the information in this User manual
before use. Use of this equipment by untrained or unqualified persons or use that is not in accordance
with this user manual, may adversely affect product performance.
2.1 Use For
The Gas Boiler Controller (GBC) provides automated safety boiler shut down when there is detection of carbon
monoxide and/or combustible gasses detected. The GBC provides up to eight dry contact outputs that are designed
to shut down boiler systems.
High voltage terminals (120/240 VAC) are located within this detector, presenting a hazard to service
technicians. Only qualified technicians should open the detector case and service the internal circuits.
Ensure power is de-energized from the detector relays prior to servicing the unit. Failure to do so may
result in electrical shock.
REV – 1.2
WARNING
WARNING
WARNING
[34-2900-0690-7]
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