This information is included as a quick reference installation guide. To ensure proper operation, these devices shall be connected to the compatible JB-QB-W series of control panels only. For the further details about our control panel, please refer to the panel installation manual. Heat detectors have the lowest false alarm rate of all automatic fire detector devices. They are best situated for fire detection in a small confined space, or in areas where ambient conditions would not allow the use of other fire detection devices, such as garages, smoking rooms, stokehold, kitchens, etc. It can also be used with our smoke detectors together to detect fire signals in whole spaces.
Features 1. The sensor is sensitive and stable the dual NTC (negative temperature coefficient) thermistor. 2. It is designed to be super- thin with a patch technique 3. Due to two-wire and non-polarity, it is easy to install. 4. The detector owns the clean, glossy and beautiful surface and small size, light weight.
3. The principle The JTW-ZD-CA3303 spot-type fixed temperature heat is designed to alarm when the temperature of the operating elements reaches a specific point. At this point, the resistor value of negative temperature coefficient thermistor reduce to turn over the below thyristor circuit, then transmit the signal to the control panel and let the detector LED light to confirm alarm information at same time. At the end, control panel will make the siren alarm.
4 Installation and connecting 4.1 Installation The JTW-ZD-CA3303 heat detector must only be used with its base together. First, the detector base is fixed on the joint box (the joint box was set in the ceiling beforehand); Second, the lines are connected according to the installation diagram; In the end, the detector is screwed tightly to the base.
Figure1: The detector base diagram 4.2. Connection Parallel connection (up to 25 devices)
Figure2: Parallel connection diagram Note: The value of terminal resistor is according to the panel requirement.
5. Suitable and non- suitable situations 5.1 Suitable: They are best situated for fire detection in a small confined space, where the smoke detector is not suitable, such as garages, smoking rooms, assembly rooms, stokeholds, kitchens, etc. 5.2 Non-suitable: They are not suitable for the places where the ambient temperature usually changes big. They are not suitable for the places where the early stage of fires need to alarm, or the smolder fires occur easily.
Within the Standard GB4716-93, alarming temperature: 62±2ºC