D I S Contractors can design, install and maintain your addressable fire alarm system, so you can see exactly which device triggered the alarm.
We have experience of projects large and small, from full network systems and addressable system through to radio fire alarm systems, we can install them all.
All Fire Alarm systems designed and installed to the current standards.
D I S Contractors give every client certainty that their project will be delivered to their complete satisfaction, fulfilling their objectives on timing, quality and budget.
Several changes to circuit design have been introduced into the code of practice brought about mainly by the inclusion of addressable systems. The code puts a limit on the size of the circuit which can be used, to limit the amount of protection which would be lost if a fault or faults occur. A single fault should not remove protection from an area greater than that allowed for a single zone and must not prevent the operation of other zones.
In a conventionally zoned system this should not happen as the zones are wired on separate circuits. However, in an addressable system several zones may be connected to the control panel by a single looped circuit.
To achieve this in an addressable system, short circuit isolators are used to protect suitable areas of the circuit.
Maximum area covered by one loop is 10,000 sq m.
The code retains the use of zones to indicate the origin of a fire. In addressable systems, the detector or manual call point in alarm can be shown by the use of an alpha numeric display. This on its own will not be acceptable and the zone in which the detector/manual call point has operated must be displayed.
The zonal indication may be mounted adjacent to the control panel and as the code also requires a plan of the building to be displayed, the use of a mimic diagram would seem to be the most suitable means for zone identification.
Benefit from the peace of mind you get from choosing to work with our experienced team here at DIS Contractors.
Contact us today on 01522 825825
…this long working relationship and corresponding history of the University College’s service requirements has been invaluable on many occasions. I have absolutely no reservations whatsoever in recommending this company.
....."We have used DIS Contractors for a number of years mainly for electrical repair/installation work but also for minor building projects, office fit-outs etc. We have always enjoyed working with Joe Bennett and his team and find them responsive and reliable..."
...."We have used DIS as our electrical contractors for more than 10 years. During this period they have carried out a full range of electrical works for us ranging from major installations to minor alterations to electrical circuits etc. We have always been more than satisfied with the standard of their work and have found them an attentive and professional company to deal with at all times. I would not hesitate in recommending them to anyone else...."