Ansul Interlock FAQ

An interlock is a safety mechanism designed to automatically shut down specific systems or equipment in response to a particular event. 

In this case, the installation of an Ansul Interlocking system would mean that when the Ansul system activates, the shutdown connection would ensure that all electrical and gas cooking appliances, and  ventilation canopy air supply, would shut down accordingly, preventing the spread of fire.

• Safety: Prevents re-ignition of fires by stopping fuel or power supply and removing air supply.

• Compliance: Required by fire safety codes, insurance, and system manufacturers.
• System Integrity: Ensures the Ansul system performs as designed in an emergency.
• Fire Triangle: Interlocking removes components of the fire triangle

Yes. Whether you have an existing or newly installed Ansul R-102 or Piranha system, interlock shutdown is a mandatory requirement for for compliance to UL300, LPS 1223, and BS EN 16282-7 standards.

No, a connection between the Ansul system and the fire alarm system is recommended, it is not mandatory.

Yes. Interlocking via the fire alarm system is possible using appropriate interfaces. In this setup, the fire alarm system must be properly connected to the interlock components and maintained in accordance with regulatory standards.
However, we recommend a dedicated interlock setup using an Ansul isolator and controller for greater reliability and system integrity.

The required interlock connections depend on the type of kitchen appliances protected by the Ansul system:

• Gas and electric appliances: Shutdown of both appliance types covered by the Ansul system.
• Canopy supply air: Shutdown to prevent additional oxygen feeding the fire.
• Extraction system: This is to be left running and operational, although this would still be UL listed if shut down.