Fire Detection Systems — In Brief
A conventional fire detection system groups detectors into zones and indicates which zone the fire has occurred in. An addressable (Analog Addressable) fire detection system assigns a unique address to each detector and indicates exactly which detector has detected the fire. Conventional systems are preferred for small buildings (apartment buildings, small businesses), while addressable systems are preferred for large buildings (shopping malls, hospitals, hotels, factories).
In Türkiye, under the Regulation on the Fire Protection of Buildings (BYKY); an addressable system is mandatory for buildings over 51 m in height, and for hospitals, hotels, shopping malls, schools, and industrial facilities. A conventional system may be used in low-risk structures such as places of worship, very small businesses, and warehouses.
Comparison Table
| Criteria | Conventional | Addressable (Analog) |
|---|---|---|
| Information per detector | “Fire in the zone” | “Fire at the exact address” |
| Maximum detectors/loop | 32 (zone) | 254 (address) |
| Maximum panel capacity | 8–16 zones | 8–32 loops = 8,000+ detectors |
| Sensitivity adjustment | None (factory setting) | Yes (4–5 levels per detector) |
| Automatic test | None | Yes (once per hour) |
| Dust/contamination compensation | None | Yes (automatic) |
| Pre-Alarm (early warning) | None | Yes |
| Cabinet fire location map | Manual | Automatic graphics |
| Ease of maintenance | Medium | High (remote diagnostics) |
| Cost (per kVA) | 100 (reference) | 180–250 (80–150% more expensive) |
| TS EN 54 compliance | EN 54-2/4 | EN 54-2/4/13/16 |
1. Conventional Fire Detection System
Operating Principle
- Detectors are connected to a zone via parallel wiring (typically 2-wire)
- Each zone is indicated by an LED (on the panel)
- If a detector is triggered, that zone LED lights up
- The panel controls outputs such as sirens, call point panel, fire suppression system, etc.
Typical Configuration
- Panel options: 4, 8, 16 zones
- Average 20–32 detectors per zone
- 2–4 siren outputs
- 1–2 independent contact outputs (FM200, elevator down, etc.)
Advantages
- Low cost (~50% cheaper)
- Simple installation and commissioning
- Maintenance requiring no expertise (diagnosis by checking LEDs)
- Low-voltage cabling (often already available in older buildings)
Disadvantages
- Unclear location (zone-based, not detector-based)
- No sensitivity adjustment (false alarms caused by dust and steam)
- Limited capacity (maximum 16 zones)
- Manual periodic maintenance is mandatory
Suitable Structures
- Apartment building (under 51 m)
- Small business (under 250 m²)
- Small warehouse, workshop
- Place of worship (small mosque, church)
- Restaurant (under 300 m²)
2. Addressable (Analog Addressable) Fire Detection System
Operating Principle
- Detectors are connected in series on a single loop cable
- Each detector has a unique address number (1–254)
- The panel interrogates each detector individually (~4 times per second)
- When detection occurs, the panel displays the exact address, room number, floor information
- Map and text message on the LCD screen
Loop Structure
- Single loop: between 32 and 254 detectors (depending on brand)
- Per panel: 1–32 loops
- Total capacity: 32 × 254 = ~8,000 detectors from a single panel
- Networking possible: 100+ panels can be controlled over a network
Advantages
- Exact location information (detector ID, floor, room)
- Adaptive sensitivity (each detector self-calibrates automatically)
- Pre-Alarm feature (warning before reaching fire level)
- Automatic maintenance mode (dust level alarm)
- Large-scale capacity (shopping malls, industrial zones)
- Environmental sensing (false alarm filtering)
- Voice Alarm integration (TS EN 54-16)
- Connection to the building management system via network
Disadvantages
- High initial investment (80–150% more expensive)
- Engineering team required (programming)
- Authorized company required (Civil Defense authorization certificate)
- Annual periodic maintenance cost (mandatory)
Suitable Structures
- Shopping malls and retail centers
- Hospital, health center, clinic
- Hotel, motel, guesthouse
- High-rise residential buildings (over 51 m)
- Industrial facility, factory
- Parking garage (50+ vehicle capacity)
- Warehouse (over 1000 m²)
- Dormitory, school, kindergarten, daycare
- Bank branch, vault room
3. Brand Comparison
Addressable System Brands
- Notifier (Honeywell): Premium segment, smart algorithm, most widespread
- Bosch FPA-5000: German engineering, modular structure
- Hochiki ESP: Japanese technology, most sensitive detectors
- Edwards EST3: American, military-grade quality
- Mavili Elektronik: Turkish domestic production, economical
- Maxlogic: Turkish domestic production
Conventional System Brands
- Cooper / Eaton CF series
- Mavili Elektronik MFP series
- Maxlogic MX series
- Apollo (Halma)
- Argus / Pegasus
4. Cost Analysis (5,000 m² office building)
| System | Number of Detectors | Investment | Annual Maintenance |
|---|---|---|---|
| Conventional (16 zones) | 200 detectors | 285,000 TL | 18,000 TL |
| Addressable (2 loops) | 250 detectors | 480,000 TL | 28,000 TL |
Result: Addressable is 68% more expensive; however, due to BYKY requirements, an addressable system is a legal requirement for the office building.
5. Summary of Legal Requirements (BYKY 2007 + 2015 amendments)
Structures where addressable fire detection is mandatory:
- All structures over 51 m
- All hospitals and healthcare facilities
- All hotels and accommodation facilities
- Schools, kindergartens, and daycare centers over 3 floors
- Shopping malls over 1500 m²
- All energy generation and transmission facilities
- Industrial facilities over 2500 m²
- All facilities with a fire extinguishing system (if sprinklers are present)
Structures where a conventional system can be used:
- Residential buildings under 51 m
- Workplaces under 250 m²
- Warehouses under 1500 m² (Class B fire load)
- Low-risk workshops
DOA Enerji Fire Detection Service
DOA Enerji provides turnkey installation for Notifier, Bosch, Hochiki, Mavili systems with an engineering team holding a Civil Defense authorization certificate. All TS EN 54-certified products, commissioning tests, and an annual periodic maintenance contract are provided. Connection reports are prepared for insurance companies.
Frequently Asked Questions
Can I upgrade a conventional system to an addressable system?
Generally, existing zone wiring is not compatible with an addressable system; rewiring is required. However, some brands such as Hochiki and Apollo offer panels with addressable/conventional hybrid modes.
Which brand has the longest service life?
For all manufacturers, detector life is 10–12 years and panel life is 15–20 years. Service life increases with periodic maintenance. Notifier and Bosch are the most reliable in terms of maintenance spare-parts supply times.
Is annual maintenance mandatory?
Yes. Under TS CEN/TS 54-14 and the Civil Defense regulation, periodic maintenance must be performed by an authorized company at least once a year. Fire insurance requires it.
Does an addressable system cause false alarms?
No (compared to conventional); modern addressable systems use a 3-level analysis algorithm. False alarm sources such as dust, steam, and odors are automatically filtered. Conventional systems have a 20–30% false alarm rate, while addressable systems are 1–3%.
Is Voice Alarm (audible evacuation announcement) required?
In all public-use buildings such as shopping malls, hotels, hospitals, schools, and cinemas, a TS EN 54-16 certified voice evacuation system is a legal requirement. Integrated with the addressable fire panel, this system makes customized announcements on a floor-by-floor basis.