The Ziton ZP720-3P is a polar white, thermistor-based addressable heat detector for ZP7 addressable fire alarm systems. It responds to changes in ambient temperature, giving a reliable response to fire in areas where conditions rule out smoke detectors.
Sensitivity is set by the ZP control panel and can be adjusted between four levels from 58 to 75°C, either manually or automatically on a timed basis. At sensitivity level two the detector meets EN 54-5 (grade 1).
Key features
- Analogue sensing to reduce false and unwanted alarms
- Addressable, so the panel knows the status and location of every sensor
- Automatic sensitivity, calibration and self-test carried out by the ZP system
- Removal or replacement with an incorrect device is reported as a fault
- Twist-and-lock fitting into ZP bases, with a site-selectable locking option (removal then needs a special tool)
- Red alarm LED on the sensor moulding and a remote indicator output
- Space for address labels on detector and base mouldings
Technical specifications
- Compatibility: all ZP7 addressable systems
- Detection principle: thermistor
- Sensitivity: four levels, 58 to 75°C
- Addressing: DIP switches; up to 127 devices per loop, each polled every two seconds
- Connection: 2-wire loop or spur, loop powered
- Operating voltage: loop 19.5 to 20.5 V, line loss <4 V
- Current consumption: 600 µA quiescent, 700 µA in alarm
- Coverage area: 50 m² (subject to local codes)
- Dimensions: 106 mm diameter x 52 mm high
- Weight: 85 g (excluding base)
- Body: moulded ABS, polar white
- Operating temperature: -10 to +85°C
- Relative humidity: 20 to 95% non-condensing
- IP rating: IP32 (indoor)
- Standards: EN 54-5, CPR certified
