The Importance of Proper Installation in Preaction Fire Protection Systems

Fire protection is not just about selecting the right system, it’s about installing it correctly to ensure reliable operation, compliance, and long-term safety. A preaction fire suppression system like the PREACTION-PAC™ is a highly effective solution for protecting sensitive environments like data centers, archives, and telecom facilities, but incorrect installation can lead to system failure when it matters most.

In this article, we’ll explore why proper installation is essential, the risks of poorly installed preaction systems, and the key steps to ensuring your fire protection system is code-compliant and fully operational.

Why Proper Installation Matters

A preaction system is more complex than a standard wet-pipe sprinkler system because it requires a coordinated setup of fire detection, pressurized air/nitrogen, and a preaction valve to function properly. Every component must be installed, tested, and maintained according to NFPA standards to ensure it will operate when needed.

Here’s why correct installation is critical:

Ensures NFPA Code Compliance

Preaction systems must be installed per NFPA 13 (Sprinkler Installation), NFPA 25 (Inspection & Testing), and NFPA 72 (Fire Detection & Alarm Systems). Failure to follow these guidelines can:

– Void system approvals – Authorities Having Jurisdiction (AHJs) may not approve a non-compliant installation.
– Compromise fire protection – If installed incorrectly, the system may not function as required.
– Result in insurance issues – Many insurers require proof of proper installation for coverage.

Prevents Accidental Water Damage

Preaction systems are designed to avoid accidental water discharge, but improper installation can lead to:

– Air leaks, causing the system to trip falsely or fail to activate.
– Incorrect pressure settings, leading to premature valve activation.
– Misaligned or faulty detection systems, delaying or preventing activation in a fire.

Guarantees System Reliability When Needed

In a fire emergency, the system must work immediately and as designed. Poor installation can result in:

– Delayed activation, allowing the fire to spread.
– Valve or piping failures, reducing system effectiveness.
– Missed maintenance issues, leading to long-term reliability problems.

Common Preaction System Installation Mistakes

Improper Piping Design

• Incorrect pipe sizing can lead to water delivery delays.
• Failure to properly drain piping can cause corrosion in the system.

Faulty Air/Nitrogen System Setup

• Leaks in the piping or valve assembly can cause pressure loss, preventing proper operation.
• Incorrect air compressor or nitrogen generator settings can lead to frequent false alarms.

Incorrect Fire Detection Configuration

• Smoke and heat detectors must be correctly positioned and calibrated to detect fires early.
• Improper wiring of the detection system can cause communication failures between alarms and the preaction valve.

Skipping Required Testing & Commissioning

• NFPA 13 and NFPA 25 require hydrostatic testing, trip testing, and full system checks before final approval.
• Failure to perform these tests can leave undetected issues in the system.

Key Steps for Proper Installation

Work with Trained Fire Protection Professionals

Preaction systems must be installed by qualified fire protection contractors who are familiar with NFPA 13 and NFPA 72 requirements. Always verify:
– Experience with preaction systems
– Licensing and certification
– Familiarity with local AHJ requirements

Follow Manufacturer Guidelines & NFPA Standards

Every preaction system has manufacturer-specific installation requirements. For example, the PREACTION-PAC™ includes factory-tested components, but the installer must:

– Properly connect water supply, drain, and sprinkler piping
– Ensure the air/nitrogen system is properly set up
– Configure fire detection per NFPA 72 and system guidelines

Conduct System Testing & Commissioning

Before the system goes live, NFPA 13 and NFPA 25 require:
– Hydrostatic pressure testing to check for leaks.
– Full preaction valve trip tests with simulated fire conditions.
– Fire alarm system verification to confirm proper detection and signaling.

Schedule Regular Inspections & Maintenance

Even the best installation won’t last forever. NFPA 25 requires ongoing inspections and maintenance to ensure:
– Piping remains clear and pressurized correctly
– Detection systems remain functional
– The system is free from corrosion and obstructions

How the PREACTION-PAC™ Simplifies Proper Installation

The PREACTION-PAC™ from United Fire Systems is designed to make installation easier and reduce errors while maintaining full NFPA compliance.

– Factory-Assembled & Pre-Tested – All components (preaction valve, air supply, detection system) are pre-wired and pre-plumbed in a single enclosure.
– Minimizes On-Site Work – The installer only needs to connect water, drains, and electrical power, reducing the chance of installation errors.
– Designed for NFPA 13 & NFPA 72 Compliance – Following the provided instructions ensures compliance with fire sprinkler and detection codes.
– Includes Built-In System Testing Features – Making NFPA 25-mandated inspections and testing easier.

By choosing a pre-engineered, fully integrated system like the PREACTION-PAC™, contractors and facility managers can reduce installation risks and ensure a fully compliant fire protection system from day one.

Final Thoughts

A preaction fire protection system is only as good as its installation. Incorrect installation can lead to delayed response, water damage, or complete system failure. Ensuring compliance with NFPA 13, 25, and 72 is critical for reliability and safety.

By working with qualified professionals, following proper installation steps, and choosing pre-engineered solutions like the PREACTION-PAC™, facility owners can ensure their fire suppression system will work when it’s needed most.

Need help selecting or installing a preaction system? Contact United Fire Systems today to learn how the PREACTION-PAC™ simplifies fire protection while ensuring full compliance.

Written By:

Ashley Villa

Marketing Manager

avilla@ufpco.com