Samon GLACIAR MIDI, Руководство пользователя

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6
3
INSTALLATION
IMPORTANT: the gas detector must only be installed by qualified personnel.
It is recommended to read the manual completely in order to use the product correctly.
3.1 General information
The performance and overall effectiveness of the system strictly depend on the characteristics of the place where the gas
detector is installed. It is therefore necessary to scrupulously comply with and carefully analyse every detail of the
installation process, including (but not limited to) the following aspects:
•
local, state and national regulations and standards governing the installation of gas monitoring equipment
•
electrical standards governing the laying and connection of power and signal cables to gas monitoring equipment
•
all possible environmental conditions that the devices will be exposed to
•
the physical characteristics of the gas to be detected (in particular, its specific weight)
• the characteristics of the application (e.g., possible leakages, movement of air, areas where gas may stagnate, high pressure
areas, etc.)
•
the accessibility needed for routine maintenance and repairs
• the types of equipment and accessories needed to manage the system
•
any limiting factors or regulations that may affect system performance or installations.
IMPORTANT: the installation surfaces must not be exposed to continuous vibrations so as to prevent damage
to the connections and electronic devices.
3.2 Installation tips
CAUTION: THERE IS NO GENERAL RULE for establishing the appropriate number of sensors and
their location for each application. Therefore, the guidelines described below are intended as
support for installers, and not as rules in their own right.
SAMON accepts no liability for the
installation of the gas detectors .
3.2.1
Sensor height
Gas type Mounting height
NH
3
Ammonia (R-717) 20 cm below ceiling
HFC / HFO / C
3
H
8
Propane (R290) 20 cm above the floor
CO
2
Carbon Dioxide (R744) 20 cm above the floor
3.2.2
Equipment rooms
In equipment rooms, the gas detectors can be installed as follows:
•
Position the gas detectors near areas with a high concentration of refrigerant, such as compressors, cylinders, storage tanks,
pipes and conduits. Avoid vibrating surfaces.
• Position the gas detectors near mechanical parts such as pressure reducers, valves, flanges, joints (brazed or mechanical) and
pipes. In particular, above or below these in relation to the type of gas (see below).
•
Position the gas detectors around the perimeter of the room, so as to completely surround the equipment.
•
Position the gas detectors in all enclosed areas (stairwells, pits, enclosed corners, etc.) where pockets of stagnant gas may
form.
• Position the gas detectors near ventilation air flows, both natural and mechanical (if present).
•
Do not place the gas detectors too close to areas with high-pressure gas, to allow this to spread in the space around the gas
detector. Otherwise the device may not detect the refrigerant leak if the flow of gas is too fast.
3.2.3
Cold rooms
In cold rooms, position the gas detectors near the return air flow from the evaporator, ideally on a side wall, but not directly
in front of the evaporator.
Where there are several evaporators, it may be possible to use one gas detector for every two evaporators if their
positioning allows.
Finally, position the gas detectors near mechanical parts or joints such as valves, flanges, and pipes, avoiding areas with
high-pressure gas.