Installation & Operation Manual Merlin GDPX+
GDPXPLUS - IOM Iss: 8 02-21
4
Installation
Planning
The Merlin GDPX+ is a multi-zone gas detection panel which can be used in many applications such as
factories, car parks, shopping malls and most commonly - boiler houses.
It can be used with up to 16 Merlin gas detectors (model TFT) for monitoring and detecting gas including
carbon monoxide, liquid petroleum gas and methane. The GDPX+ also has provisions to identify and
monitor gas levels via an internet connection.
The GDPX+ system can be integrated with, but not limited to, a BMS (building management system)
including Modbus, a fire panel, external alarms and remote emergency shut-off buttons
.
Please refer to your detector manual for important information regarding coverage, location and
positioning including areas and conditions to avoid!
Locations for detectors will vary based on the intended application and target gas, they should be located
near identified sources of a potential gas leaks/ pockets where hazardous gas could quickly accumulate
and areas of identified consequential risk.The composition of the target gas and its density relative to air
are used as the basis for any recommended height of sensors.
Generally, the installation height of a sensor for a heavy gas (such as propane) would be close to the
lowest point in the area, and for a light gas (such as methane) would be close to the highest point in the
area. Any recommended heights may vary based on air flow and temperature conditions in addition to the
proposed application and location – this is particularly apparent with oxygen depletion sensors, and the
target gas that they are used for.
Quick Installation Arrangement
The control panel should be located outside of the hazardous area that it is monitoring.
Easy accessibility is required both for status observation and alarm purposes.
Where connections may exceed 100 metres from one control panel – Contact your supplier!
We recommend all Merlin gas detection equipment is commissioned by competent/trained engineers to
ensure correct installation and operation.
The Merlin range of gas detectors are optimum calibrated when manufactured. However, we strongly
recommend the detectors response and fault conditions are tested and validated once installed. This will
ensure the equipment is performing as intended and free from unforeseen damage caused by
transit/installation.
