For more information about design concepts and operation, refer to the engineering guidelines.

CAUTION
Duration of operation

Multi-zone systems where selector valves are controlled by solenoid valves always require solenoid valves with self-holding (SOLVAL10-SH) to pilot the horns.

WARNING
Use of a CO2 pilot cylinder

To avoid any failure of the alarm horn, the pilot cylinder must not contain a dip tube or odorized gas.

To ensure personnel safety, always use metal pipes for the pilot circuit. Never use rubber hoses.