○Fire and fault routing signalling should be tested.

WARNING: Before testing, the engineer must be aware both of the operation of all devices fitted to the auxiliary circuits and of the consequences of their operation.

13.4Pre-Commissioning Wiring Check

NOTE: This pre-commissioning wiring check procedure should be followed to test all wiring prior to specific commissioning of any detection, alarm and auxiliary circuits.

1.Ensure that no devices are connected to the detection zones and alarm circuits, but that the cables are linked through at the device locations to achieve a continuous circuit.

2.Ensure that the resistance of all cables to earth and between cores is at least 2MΩ. Check the following:

i)Positive to earth resistance is 2MΩ or greater.

ii)Negative to earth resistance is 2MΩ or greater.

iii)Positive to negative resistance is 2MΩ or greater.

3.Connect a wire link as the end-of-line device on each of the zones and alarm circuits. At the panel end, measure the resistance across the positive & negative ends of the cables for each of the circuits; ensuring the value does not exceed 20Ω. Remember to remove the wire links after the tests.

Correct polarity throughout all circuits must be maintained. Rectify any faults.

All bells, detector heads and call points should now be connected and the correct end-of-line devices fitted. Use the spare end-of-line devices supplied and leave the EOL devices in the panel terminals at this stage. Remember to remove any links fitted to detector bases. Be very careful to maintain correct polarity at each device.

Warning: Intrinsically safe zone arrangement.

○End-of-line capacitors cannot be connected to zones monitoring Intrinsically Safe detection devices in hazardous areas. To do so will risk causing an explosion in the hazardous area. End-of-line resistors with a value of 3K9Ω must be used, which comply with the requirements laid down in the installation data sheets provided with the I.S. barrier and the I.S. fire detection devices.

○In order for detector head removal monitoring to function correctly when resistors are used as the end-of-line devices, any diodes in the detector bases that are in circuit when the detector head is removed must be disconnected.

○The panel must be configured to monitor Intrinsically Safe zones.

○The first device on an Intrinsically Safe zone must be an I.S. Zener Barrier or Galvanic Isolator. Detectors and Manual Call Points on the Safe side of the barrier are not permitted.

○To comply with the requirements of BS5839, all manual call points should be located in the zone cabling between the I.S. Barrier/Isolator and the first detector. Any manual call point or detector located on the “end-of–line” side of a detector will be rendered inoperative if the detector head is removed.

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BRK electronic Mx-1000 manual Pre-Commissioning Wiring Check
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Mx-1000 specifications

The BRK electronic Mx-1000 is an innovative and versatile device designed for both home and industrial use, primarily focusing on smoke and carbon monoxide detection. Its advanced features enhance safety, ensuring peace of mind for users in various environments.

One of the standout features of the Mx-1000 is its dual-sensor technology. It combines both photoelectric and ionization sensors, maximizing its ability to detect different types of smoke. Photoelectric sensors are highly effective at identifying smoldering fires, which are often associated with slow-burning materials. On the other hand, ionization sensors excel at detecting fast-flaming fires. This dual capability ensures comprehensive fire detection, making the Mx-1000 one of the most reliable devices in its category.

Another notable characteristic is its built-in carbon monoxide detector. Carbon monoxide is a silent killer, and the Mx-1000 addresses this threat by providing early warning signals when harmful levels of this gas are detected. The integration of both smoke and carbon monoxide detection in a single unit simplifies safety measures and reduces the number of devices required for home and workplace safety.

The Mx-1000 is equipped with advanced digital technology that enhances its functionality. A state-of-the-art microprocessor evaluates alarm conditions more intelligently, which minimizes the chances of false alarms. This feature is particularly beneficial for households that might experience frequent smoke triggers from cooking or other benign sources.

User-friendliness is a key design aspect of the Mx-1000. It features a clear LED display that indicates the operational status, and a simple test button allows users to verify functionality with ease. The device also features a low-battery indicator, ensuring users are always informed about its operational state.

Installation is straightforward, with options for both wall and ceiling mounting to accommodate various room layouts. The Mx-1000 is designed to appeal to a wide range of customers, from DIY enthusiasts to professional installers.

In addition to its technological advancements, the BRK electronic Mx-1000 is built with reliability in mind. Its durable construction is meant to endure various conditions, ensuring longevity and consistent performance over time. This combination of top-tier technology, user-friendly features, and robust design makes the Mx-1000 a trusted choice for those seeking comprehensive safety solutions in smoke and carbon monoxide detection.
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