Fire Alarm Systems: How to Choose and Install Them Correctly

Fire alarm systems are a critical component of safety for any facility, ensuring early fire detection and rapid response to protect people and property. Selecting and installing such systems require expertise and experience to ensure reliability and compliance with standards. Our company shares expert advice on choosing, installing, and addressing common issues with fire alarm systems. In this article, we will discuss the differences between automatic and manual systems, installation requirements, and ways to avoid common problems.

Automatic vs. Manual Systems

Fire alarm systems are divided into automatic and manual types based on their activation method. The choice depends on the type of facility, risk level, and regulatory requirements.

Automatic Fire Alarm Systems

• Operating Principle: Detects signs of fire (smoke, temperature rise, flames) using sensors (detectors) without human intervention. Includes smoke, heat, flame, or gas detectors.
• Advantages: Rapid response, effective for large spaces or areas with limited personnel access. Can be integrated with fire suppression and smoke extraction systems.
• Disadvantages: Higher equipment and installation costs, requires regular maintenance.
• Applications: Shopping malls, offices, industrial facilities, high-rise buildings.

Manual Fire Alarm Systems

• Operating Principle: Activated manually via buttons or levers placed in accessible locations (e.g., corridors, near exits).Typically complements automatic systems.
• Advantages: Simplicity, low cost, effective in small spaces with constant human presence.
• Disadvantages: Relies on human intervention, may be less effective in rapidly spreading fires.
• Applications: Small offices, educational institutions, hotels.

According to the Ukrainian Building Code (ДБН В.2.5-56:2014), automatic fire alarm systems are mandatory for most public and industrial facilities, while manual detectors are often installed as a supplementary measure. Our company recommends combining both types for maximum safety, especially in facilities with high occupancy.

Installation Requirements

The installation of fire alarm systems is governed by state regulations and standards to ensure their effectiveness and reliability. Key requirements include:

Compliance with ДБН and ДСТУ Standards

• ДБН В.2.5-56:2014 “Fire Protection Systems”: Specifies detector placement (e.g., one smoke detector per 50 m² in rooms with ceilings up to 3.5 m), cable types (fire-resistant with EI 30 insulation or higher), and the need for backup power.
• ДСТУ EN 54: Regulates technical specifications of components, including detector sensitivity and notification device sound levels (minimum 85 dB).

Design

• A project plan is developed before installation, accounting for the building layout, risk zones, and evacuation routes. The plan must be approved by the State Fire Inspectorate.
• Detectors are placed to avoid “dead zones” (e.g., no closer than 0.5 m to walls and 1 m to ventilation openings).

Installation Work

• Installation of detectors, notification devices, and the central control panel.
• Laying fire-resistant cables or using wireless modules.
• Integration with other systems (fire suppression, smoke extraction, notification).

Testing and Commissioning

• After installation, the system is tested for detector sensitivity and overall functionality, e.g., simulating smoke to test smoke detectors.
• Documentation, including work completion certificates, is prepared for submission to the State Fire Inspectorate.

Our company ensures full compliance with installation standards, using certified equipment and engaging qualified engineers. Learn more about comprehensive fire suppression systems on our website.

Common Problems and Solutions

Improper selection or installation of fire alarm systems can lead to operational failures. Below are the most common issues and their solutions:

Problem: False Alarms

• Cause: Incorrect detector placement (e.g., smoke detectors near ventilation systems or in high-humidity areas).
• Solution: Conduct an audit of detector placement and relocate them to appropriate zones. Use combined detectors (smoke + heat) to reduce false alarms.

Problem: Equipment Malfunction

• Cause: Use of non-certified components or lack of regular maintenance.
• Solution: Source equipment from trusted suppliers and establish a quarterly maintenance contract. Our company offers service agreements to keep systems operational.

Problem: Failure to Respond to a Fire

• Cause: Low detector sensitivity or power supply issues.
• Solution: Adjust detector sensitivity based on the room type and ensure backup power (batteries or generators).

Problem: Non-Compliance with Standards

• Cause: Errors in design or installation, leading to failure during facility commissioning.
• Solution: Engage a licensed company with experience in ДБН and State Fire Inspectorate requirements. We guarantee proper documentation and compliance with standards.

Regular testing and professional maintenance help prevent most issues. Our specialists conduct diagnostics and provide staff training to ensure flawless system performance.

Read also about smoke extraction systems integrated with fire alarms on our website.