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Void detection is a fraught issue, especially on new-build projects. From a design perspective, it is difficult to predict the amount of detection required and invariably, providing access for ongoing maintenance is a challenge.
VoidAlert™heat sensitive sensor-wire is installed through the protected area between the VoidAlert™ Remote Indicator and VoidAlert™ Test Point. The Test Point is typically installed in an accessible location to facilitate ongoing engineer maintenance.
The VoidAlert™‘Test-Point’ incorporates a key switch with ‘normal’ and ‘test’ positions. Operation of the key switch tests the system for both ‘Open Circuit’ and ‘Fire’ conditions. In order to fault test the sensor-wire, the ‘test’ mode key position is selected and a simulated fire signal is generated to activate the Fire Alarm System. VoidAlert™ can be interfaced with all types of Fire Alarm System including conventional and addressable.
The VoidAlert™ Remote Indicator illuminates when the system is activated.
The traditional method
Conventional Void Detection using multiple ‘point-detectors’
- High cost of installation
- Access Panels required for installation and maintenance
- Not maintenance friendly
The VoidAlert™ method
VoidAlert™ offers the following benefits:
- Very cost-effective
- Simple to install
- No access panels required. Void does not require ongoing access for maintenance!
- Caters for unexpected downstands or partitions with virtually no cost implications
British Standard Design requirements...
- Install AFD to voids greater than 800mm
- Treat downward projections exceeding 10% of the void depth as wall
BS5839-Part 1:2013 states:
22.2d) If the system Category is such that automatic fire detection should be provided in any area that contains a horizontal void of 800 mm or more in height, automatic fire detection should also be provided in the void.
22.3j) Ceiling obstructions, such as structural beams, deeper than 10% of the overall ceiling height should be treated as walls [see Figure 10a)]. NOTE 10 Within horizontal voids, beams or obstructions that are deeper than 10% of the overall depth of the void regardless of whether the void is above the ceiling or below the floor, ought to be treated as walls that subdivide the void.
KeyCall® is a revolutionary patent-granted Key Operated Fire Alarm Activation Device which has been developed specifically for ‘approved’ applications where standard fire alarm call points would be vulnerable to abuse. Developed by Fixfire® in response to growing demand from the Mental Health Care sector, KeyCall® is a revolutionary one-piece analogue addressable key operated manual call point.
Compatible with a wide range of Conventional and Addressable Fire Alarm Systems.
KeyCall® accepts a Euro-Profile style cylinder
Typically suited/keyed-alike cylinders are fitted so that authorised persons can activate KeyCall® using their standard door key.
Key ‘Click-latch’ mechanism ensures key ‘latches’ in correct position to activate Fire Alarm System.
Anti-ligature low-profile flush-mounting design.
Neat minimalistic one piece construction incorporating Fire Alarm interface module.
Red fire indicator illuminates when KeyCall® is activated.
Compatible with a wide range of Conventional and Addressable Fire Alarm Systems
Applications include:
- Prisons
- Mental Healthcare
- Special Educational Needs (SEN) School
The Ultimate Solution for Void Fire Detection
The Ultimate Solution for Void Fire Detection
British Standard Design requirements...
- Install AFD to voids greater than 800mm
- Treat downward projections exceeding 10% of the void depth as wall
BS5839-Part 1:2013 states:
22.2d) If the system Category is such that automatic fire detection should be provided in any area that contains a horizontal void of 800 mm or more in height, automatic fire detection should also be provided in the void.
22.3j) Ceiling obstructions, such as structural beams, deeper than 10% of the overall ceiling height should be treated as walls [see Figure 10a)]. NOTE 10 Within horizontal voids, beams or obstructions that are deeper than 10% of the overall depth of the void regardless of whether the void is above the ceiling or below the floor, ought to be treated as walls that subdivide the void.
VoidAlert Remote Indicator
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Void detection is a fraught issue, especially on new-build projects. From a design perspective, it is difficult to predict the amount of detection required and invariably, providing access for ongoing maintenance is a challenge.
VoidAlert™heat sensitive sensor-wire is installed through the protected area between the VoidAlert™ Remote Indicator and VoidAlert™ Test Point. The Test Point is typically installed in an accessible location to facilitate ongoing engineer maintenance.
The VoidAlert™‘Test-Point’ incorporates a key switch with ‘normal’ and ‘test’ positions. Operation of the key switch tests the system for both ‘Open Circuit’ and ‘Fire’ conditions. In order to fault test the sensor-wire, the ‘test’ mode key position is selected and a simulated fire signal is generated to activate the Fire Alarm System. VoidAlert™ can be interfaced with all types of Fire Alarm System including conventional and addressable.
The VoidAlert™ Remote Indicator illuminates when the system is activated.
The traditional method
Conventional Void Detection using multiple ‘point-detectors’
- High cost of installation
- Access Panels required for installation and maintenance
- Not maintenance friendly
The VoidAlert™ method
VoidAlert™ offers the following benefits:
- Very cost-effective
- Simple to install
- No access panels required. Void does not require ongoing access for maintenance!
- Caters for unexpected downstands or partitions with virtually no cost implications
British Standard Design requirements...
- Install AFD to voids greater than 800mm
- Treat downward projections exceeding 10% of the void depth as wall
BS5839-Part 1:2013 states:
22.2d) If the system Category is such that automatic fire detection should be provided in any area that contains a horizontal void of 800 mm or more in height, automatic fire detection should also be provided in the void.
22.3j) Ceiling obstructions, such as structural beams, deeper than 10% of the overall ceiling height should be treated as walls [see Figure 10a)]. NOTE 10 Within horizontal voids, beams or obstructions that are deeper than 10% of the overall depth of the void regardless of whether the void is above the ceiling or below the floor, ought to be treated as walls that subdivide the void.
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