Fire safety in any building is not just a formality or steps to meet regulatory requirement — it’s also about and mostly about protecting lives, minimising property damage, and ensuring business continuity. In New South Wales (NSW), one of the most critical parts of a building’s fire protection strategy is the Dry Fire System, often referred to as the Fire Detection and Alarm System (FDAS).

In this comprehensive guide, we’ll explain what a Dry Fire System is, how it works, why it’s essential, who needs one, and how to keep it compliant under Australian Standards and NSW fire safety laws.

What is a Dry Fire System?

A Dry Fire System is a collective term for fire protection systems that do not use water suppression as their primary method. Instead, they rely on electronic detection and alarm technology to detect smoke, heat, or flames, then alert occupants and trigger emergency responses.

Unlike wet fire systems (e.g., sprinklers or hydrants), dry systems focus on early detection and notification rather than physically extinguishing a fire.

Typical components of a Dry Fire System include:

Smoke detectors (photoelectric, ionisation, or multi-sensor)
Heat detectors (fixed temperature or rate-of-rise)
Manual call points (break-glass alarms)
Fire Indicator Panel (FIP)
Sounders and strobes (audible and visual alarms)
Emergency warning and intercommunication systems (EWIS)

How a Dry Fire System Works

Detection
Sensors detect smoke, heat, or flames depending on their type and location.
Signal Transmission
Once the smoke or heat is detected, the detector transmits a signal to the Fire Panel (FIP)
Panel Processing
The FIP analyses the signal to determine if it’s a valid fire event or a false alarm.
Alarm Activation
Audible alarms (sirens, speakers) and visual strobes activate to alert occupants.
Emergency Response Integration
The system may automatically notify the Fire and Rescue NSW brigade and trigger other systems like smoke control fans or door release mechanisms.

Why Dry Fire Systems Are Essential

Early Warning Saves Lives

Fires can grow out of control within minutes. Dry systems provide critical early warning, allowing people to evacuate before conditions become fatal.

Property Protection

Early detection helps avoid large-scale damage. Even a few minutes of advanced notice can make a huge difference.

Legal Compliance

Under the Building Code of Australia (BCA) and AS 1670.1–2018, certain building classes must have compliant fire detection and alarm systems.

Insurance Requirements

Many insurers require proof of a maintained and operational Dry Fire System before issuing or renewing policies.

Who Needs a Dry Fire System?

Dry Fire Systems are common in:

Commercial buildings (offices, retail, warehouses)
Residential apartments (Class 2 buildings)
Hotels and motels
Educational facilities
Healthcare facilities
Industrial sites
Public assembly venues (theatres, clubs)

Tip: Even if your building is not legally required to have a dry fire system, installing one can lower insurance premiums and improve safety.

Australian Standards & Legal Requirements

AS 1670.1–2018

Covers the design, installation, and commissioning of fire detection and alarm systems.

AS 1851–2012

Specifies maintenance schedules and record-keeping requirements.

Building Code of Australia (BCA)

Specifies which buildings require detection and alarm systems.

NSW Environmental Planning and Assessment Regulation 2021

Annual Certification is to be achieved through the process of Annual Fire Safety Statement (AFSS).

Types of different Devices in Dry Fire Systems

Device	Use Case	Best For
Photoelectric Smoke Detectors	Detect smouldering fires	Offices, bedrooms
Ionisation Smoke Detectors	Detect fast-flaming fires	Storerooms
Heat Detectors	Detect temperature rise	Kitchens, garages
Flame Detectors	Detect UV/IR light from flames	Industrial plants
Multi-Sensor Detectors	Detect smoke + heat	High-risk areas

Fire Indicator Panels (FIP) – How it works

Here is the detailed explanation on how a Fire Indicator Panel as part of Fire Detection and Alarm System works.

Step 1. Detection and Signal Input

Detectors (smoke, heat, flame) and manual call points send electrical signals to the FIP when they detect smoke, heat, or someone activates the manual point.
In an addressable system, the panel can identify exactly which device and location triggered the signal.
In a conventional system, the panel can only pinpoint the zone (group of devices) in alarm.

Step 2. Signal Processing

The FIP’s internal circuitry and software verify the signal to minimise false alarms.
Some systems apply alarm verification delays (especially in sensitive areas) before triggering full evacuation.
The panel checks against preset conditions — e.g., smoke density, temperature rise rate — to determine if it’s a true fire event.

Step 3. Alarm Activation

Once the signal is confirmed, the FIP:
- Activates audible alarms (sirens, bells, speakers)
- Activates visual alarms (strobes, warning lights)
- Triggers Evacuation Tones or Alert Tones (in EWIS systems)
Some panels support two-stage alarms — an alert tone for staff to investigate, then an evacuation tone if confirmed.

Step 4. Integration with Other Systems

The FIP can automatically:

Notify Fire Brigade (currently called FRNSW) via Fire Alarm Monitoring System.
Trigger building systems such as:
- Closing fire doors
- Activating smoke exhaust fans
- Shutting down HVAC systems
- Releasing magnetic door holders

Step 5. Monitoring and Display

The panel shows:
- The zone or device in alarm
- Faults in the system (e.g., disconnected detector, wiring fault)
- Power supply status (mains and backup battery)
Operators can silence alarms, reset the system, or isolate zones for maintenance — but only trained staff should do this.

Step 6. Event Logging

FIPs log every event — alarms, faults, resets — for compliance and investigation purposes.
These logs are essential for Annual Fire Safety Statements (AFSS) and insurance documentation.

Example in Action

Imagine an electrical fault in a server room:

Smoke detector senses particles.
FIP receives the signal from that detector.
The panel’s display shows “Alarm – Level 2, Server Room Detector 3.”
Alarms sound and strobes flash on the affected floor.
HVAC shuts down to stop smoke spread.
Fire brigade is notified automatically.
Building occupants follow evacuation procedures.

Dry Fire System Examples in NSW

Case Study 1 – Small Business Office

A consulting firm in Sydney CBD installed a compact Fire Detection and Alarm System with 12 smoke detectors and one FIP. Six months later, an electrical fault caused a small fire in the server room. Evacuation was triggered timely and fire was controlled.

Case Study 2 – Residential Apartment Block

A 10-storey block in Chatswood upgraded to addressable detectors, allowing the FIP to show exact alarm locations. This reduced false alarm response times and avoided multiple unnecessary brigade call-outs.

Monthly & Annual Testing Requirements

Under AS 1851, systems must be:

Visually inspected monthly
Functionally tested every 6 months
Full system tested annually (50% of smoke detectors and 20 percent of heat detectors are required to be tested as per the Standard.
Records kept for AFSS submission

Common Compliance Issues with Dry Fire Systems

Even a well-installed Fire Detection and Alarm System can fail compliance — and put people at risk — if it isn’t maintained properly. Here are the most common issues we encounter during inspections in NSW, with real-world examples and tips to avoid them.

Dirty Detectors – Dust Triggers False Alarms

Dust, cobwebs, insects, or even paint overspray can block or interfere with the sensing chamber of smoke detectors. This not only reduces their sensitivity to real fires but also causes nuisance alarms that waste time and resources.
Example: A retail warehouse had repeated false alarms traced to detectors above a dusty mezzanine storage area. If AS1851 is followed and detectors cleaned on regular basis, this could have been prevented.
Solution: Include detector cleaning in your routine maintenance schedule, particularly in construction, warehouse, and high-dust environments.

Obstructed Devices – Furniture Blocking Manual Call Points

Manual call points (MCPs) — the red “break glass” boxes — must be visible and accessible at all times.
Example: In a childcare facility, a shelf unit placed in front of an MCP delayed activation during a kitchen incident. This violated AS 1670.1 requirements and could have caused serious evacuation delays.
Solution: Keep a clear 1-metre radius around all detection and activation devices.

FIP Location Issues – Mounted Above Legal Height or Obstructed

The Fire Indicator Panel (FIP) must be easily accessible to the fire brigade and mounted at the correct height (AS 1670.1 recommends controls between 1.2–1.5m from floor level).
Example: An office fit-out placed the FIP in a locked storeroom behind office furniture. Fire brigade officers had to delay investigation while gaining access — a clear compliance failure.
Solution: Always mount and maintain the FIP in an unobstructed, accessible location as per approved fire design.

No Zone Block Plan – Missing from FIP Cabinet

A Zone Block Plan is a mandatory diagram inside the FIP cabinet showing the layout of all detection zones. This will enable Fire Fighters to locate the part of the building where detectors were triggered and help save valuable time of Fire Fighters.
Example: During an after-hours call-out, the brigade had no visual reference to locate a detector in alarm. They had to search multiple floors manually, delaying response.
Solution: Keep the zone block plan current and replace it immediately if damaged or missing.

Expired Service Records – Causes AFSS Rejection

In NSW, your Annual Fire Safety Statement (AFSS) submission will fail if you can’t show up-to-date service records for your dry fire system.
Example: A commercial landlord missed their AFSS deadline because the last service report was 14 months old. The council issued a penalty notice.
Solution: Maintain digital and hard copy service records, and schedule AS 1851-compliant servicing every six months without exception.

Costs of Installation & Maintenance

Factors affecting cost:

Building size & complexity
Type of detectors used
Whether the system is addressable or conventional
Integration with other systems

Example Range:

Small commercial unit: $5,000–$15,000
Multi-storey building: $50,000+

Why Choose SPS Fire and Safety for Dry Fire Systems

We provide:

Free site assessment
Custom AS 1670.1-compliant designs
Fast installation
Monthly, 6-monthly, and annual testing
AFSS certification by Accredited Practitioners

Fire Safety in NSW – Laws & Penalties

Failure to maintain your FDAS can result in:

Council fines
AFSS late penalties
SafeWork NSW penalties
Insurance claim denial

FAQ: Dry Fire Systems in NSW

Q: How often should my dry fire system be serviced?
Every month (visual check) and 6 months (functional test), per AS 1851.

Q: Can I silence alarms myself?
Only trained staff should operate the FIP, and alarms should never be ignored.

Q: What’s the difference between addressable and conventional systems?
A system which pinpoints exact detector location is called Addressable systems where as the system which only identifies the zone of detectors is called conventional system.

Final Thoughts

A well-designed, properly maintained Dry Fire System is not just a regulatory requirement in NSW — it’s a vital safeguard for people and property. Early detection saves lives, reduces damage, and keeps your business compliant and insurable.