Combustible gas detector installation requirements

Kyushu Space explains the installation requirements of combustible gas detectors
When the flammable gas alarm controller is installed on the wall, the height of the bottom edge from the ground should be 1.3~1.5m, the side of the door close to the door shaft should not be less than 0.5m, and the operating surface should have a working distance of 1.2m wide; When installing, the bottom edge should be 0.1 to 0.2 m above the ground. The flammable gas alarm controller should be installed firmly and should not be tilted; when installing on a lightweight wall, reinforcement measures should be taken.
Cables or wires introduced into the controller should meet the following requirements:
1 Wiring should be neat, should not be crossed, and should be fixed and secure;
2 The cable core wire and the end of the supplied wire shall be marked with the number and shall be consistent with the drawing. The handwriting shall be clear and not easy to fade;
3 For each terminal of the terminal block, the wiring shall not exceed 2;
4 Cable cores and wires should be left with a margin of not less than 200mm;
5 wires should be bundled into bundles;
6 After the wire is passed through the pipe or the wire trough, the pipe mouth and the notch should be blocked.
The installation of combustible gas detectors shall meet the following requirements:
1 The detector can be installed only when it is about to be commissioned. It should be kept safely before commissioning and should be protected against dust, moisture and corrosion.
2 The detector should be mounted securely and must be crimped or welded reliably to the wire. Corrosive flux should not be used when soldering.
3 The detector connection wire should have a margin of not less than 150mm and should be clearly marked at its end.
4 The detector threading hole should be blocked, and the installed detector should take protective measures.
Manual alarm trigger installation should meet the following requirements:
1 When installed on a wall, the height of the bottom edge of the floor should be 1.3 to 1.5m.
2 Should be installed securely and not tilted.
3 The connecting wire should have a margin of not less than 150mm and should be clearly marked at its end.
System grounding should meet the following requirements:
1 The metal casing of the AC/DC power supply equipment with 36V or higher in the system should be grounded. The grounding wire should be connected to the electrical protection grounding conductor (PE).
2 After the grounding device is constructed, the grounding resistance should be measured and recorded. Its grounding resistance should be less than 4Ω.
The installation of supporting equipment should meet the following requirements:
1 The manual control device for valves, fans and other equipment should be installed according to the requirements of the manual alarm trigger device.

2 The sound and light alarm device should be installed at a distance of about 3m from the ground, without obstruction.



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