The Hazenfire AT227SP UL Listed HFC-227ea clean agent fire suppression system — engineered total flooding protection for data centers, electrical rooms, control rooms, communication centers, and sensitive equipment areas. Clean, non-conductive, and residue-free discharge.
When Fire Breaks Out in a Critical Room, You Have Seconds — Not Minutes
Data centers, electrical rooms, and control rooms aren’t just rooms. They are the beating heart of modern operations. A fire event in any one of these spaces doesn’t just damage equipment — it can trigger business interruption, catastrophic data loss, production shutdown, and power distribution failure that ripples across an entire organization.
Conventional water-based fire suppression? Not an option. The cure would be worse than the disaster.
This is why clean agent fire suppression systems are the standard for critical technical environments worldwide — and why the Hazenfire AT227SP UL Listed HFC-227ea Clean Agent Fire Suppression System was engineered specifically for these high-stakes applications.
What Is an HFC-227ea Clean Agent Fire Suppression System?
HFC-227ea is a clean gaseous fire extinguishing agent used in total flooding automatic fire suppression systems. When a protected room is designed as an enclosed hazard area and the system activates, HFC-227ea is discharged into the space through the piping and nozzles — rapidly reaching the required extinguishing concentration throughout the entire enclosed space.
Unlike water, foam, or dry chemical systems, HFC-227ea leaves no particles, powder, or oily residues after discharge. This makes it exceptionally well suited for areas containing electronic equipment, electrical cabinets, communication equipment, control panels, archives, and other sensitive assets.
The Hazenfire AT227SP system is a fully engineered system. That means the cylinder quantity, agent weight, pipe size, pipe length, nozzle arrangement, and discharge design are all selected according to the actual protected room dimensions and system layout — not rough estimation.
Why Data Centers and Electrical Rooms Need Clean Agent Protection
Data centers, server rooms, UPS rooms, transformer rooms, switch rooms, and control rooms share a common challenge: they contain high-value equipment that must remain operational at all times. A fire event — even a small one — can trigger consequences far beyond the room itself.
For these environments, a fire suppression system must meet a demanding set of requirements:
- Extinguish fire quickly inside the protected enclosure
- Be non-conductive for safe use around electrical and electronic equipment
- Leave no residue on sensitive components
- Support automatic detection and actuation
- Be suitable for engineered pipe network distribution
- Be designed according to recognized clean agent system standards
The Hazenfire AT227SP HFC-227ea system is purpose-built for exactly this type of application. Typical protected areas include electronic data processing rooms, telephone exchanges, communication centers, transformer and switch rooms, control rooms, laboratories, auxiliary power rooms, bank vaults, libraries, and flammable liquid storage rooms.
UL Listed System and NFPA 2001 Design Basis
For international projects, certification and standard compliance are critical requirements for consultants, EPC contractors, fire protection contractors, and end users. The Hazenfire HFC-227ea system is backed by a strong and credible approval basis:
HFC-227ea Agent — Underwriters Laboratories Inc. UL Recognized Component
Hazenfire Manufactured System — Underwriters Laboratories Inc. UL Listed
Design and Application Basis — NFPA 2001 Clean Agent Fire Extinguishing Systems
Quality Assurance — Hazenfire equipment is manufactured under an ISO 9001 quality assurance system
It is important to note that detectors and control panels used together with the Hazenfire HFC-227ea extinguishing system must use UL Listed products. This ensures complete system integrity — especially in projects where the extinguishing system is connected to an automatic fire detection and release control panel.
How the Hazenfire HFC-227ea System Works
The Hazenfire AT227SP system can be activated mechanically or electrically.
In a typical automatic system, fire detectors send a signal to the fire alarm and releasing control panel. The control panel then energizes the electrical actuator installed on the master cylinder valve. Once the master cylinder opens, HFC-227ea is released into the pipe network.
For a multi-cylinder system, the master cylinder uses pilot pressure to actuate slave cylinders through pilot hoses and pneumatic actuators. The agent then flows through discharge hoses, check valves, manifold, distribution pipework, and nozzles into the protected area.
The discharge process step by step:
- Fire is detected inside the protected room
- The releasing control panel receives the fire signal
- The electrical actuator opens the master cylinder valve
- The master cylinder releases HFC-227ea agent
- Slave cylinders are actuated where required
- Agent flows through the pipe network
- Discharge nozzles distribute the agent into the protected area
- The design concentration is achieved to suppress the fire
The system can also include manual release devices for emergency operation, according to project design requirements.
Main Components of the AT227SP HFC-227ea System
The Hazenfire HFC-227ea fire extinguishing system is built from a complete set of mechanical and discharge components. Depending on the project configuration, the system may include:
- HFC-227ea cylinder assembly
- Container valve and internal siphon tube
- Cylinder fixing brackets
- Pressure gauge and safety relief device
- Discharge pressure switch
- Electrical, pneumatic, and manual actuators
- Discharge hose and valve outlet adaptor
- Pilot hose and bleed valve
- Manifold, manifold bracket assembly, and manifold check valve
- Discharge nozzle
- Pressure switch connector
- Inside and outside warning signs
This complete system structure allows the AT227SP to be deployed in single-cylinder systems, multi-cylinder systems, manifold systems, and non-manifold arrangements — depending on the engineering design.
25 Bar and 42 Bar HFC-227ea System Options
The HFC-227ea agent is stored as a liquefied compressed gas, super-pressurized with dry nitrogen. The Hazenfire AT227SP system offers two storage pressure options:
- 25 bar at 21°C
- 42 bar at 21°C
The final selection between pressure configurations depends on the project design, cylinder arrangement, piping layout, discharge requirements, and hydraulic flow calculation. For longer pipe networks or more complex engineered systems, system pressure and flow performance must be evaluated by qualified fire engineers.
Design Concentration and Fire Hazard Types
HFC-227ea system design is based on the required extinguishing concentration for the protected hazard. Minimum design concentration values are:
| Fire Hazard Class | Minimum Design Concentration |
|---|---|
| Class A (Surface fires) | 6.7% |
| Class B (Liquid fires) | 8.7% |
| Class C (Electrical fires) | 7.0% |
Actual system design must account for hazard type, protected volume, temperature, altitude correction, enclosure integrity, discharge arrangement, and applicable standard requirements. Because the AT227SP is a fully engineered system, the design must be completed using proper calculation methods — not general estimation.
Clean, Non-Conductive and Residue-Free Protection
One of the defining advantages of HFC-227ea is its suitability for sensitive equipment environments. HFC-227ea is a clean gaseous agent containing no particles or oily residues. After discharge, it leaves no residue or oily deposits on delicate electronic equipment and can be removed from the protected space simply by ventilation.
This is especially important for facilities where downtime and equipment contamination must be minimized — including:
- Data centers and server rooms
- UPS rooms and telecommunication rooms
- Control rooms and electrical switch rooms
- Transformer rooms and laboratories
- Archive rooms and bank vaults
In environments where even minor contamination after a fire event would cause secondary losses, a clean agent system delivers a decisive technical advantage over residue-producing extinguishing methods.
Suitable Applications
Data Centers and Server Rooms
Data centers require fast fire suppression with minimal impact on electronic equipment. HFC-227ea is non-conductive and residue-free — making it the trusted choice for server cabinets, IT rooms, data processing areas, and network equipment rooms.
Electrical Rooms and Switch Rooms
Electrical rooms often contain switchgear, control panels, UPS systems, and power distribution equipment. A clean agent system eliminates the risk of equipment contamination after discharge, protecting both the hardware and the facility’s ongoing operations.
Control Rooms
Industrial control rooms, process control centers, and automation rooms require continuous operation and fast fire protection. HFC-227ea total flooding protection can be applied wherever the room is properly enclosed and engineered for clean agent discharge.
Communication Centers
Telecommunication facilities, telephone exchanges, and communication equipment rooms need fire protection that does not damage sensitive electronic equipment. HFC-227ea is ideally suited for this type of enclosed technical environment.
Transformer and Auxiliary Power Rooms
For transformer and power-related rooms, system design must be reviewed according to the actual hazard, enclosure condition, and applicable project standard. Where clean agent protection is appropriate, HFC-227ea can provide engineered total flooding protection.
Engineering Information Required for System Selection
To prepare a proper HFC-227ea system proposal, the following information should be gathered before design:
