The electric control heads provide for electric and local manual actuation of the CO2, FM-20, Novec cylinder valves, or directional (stop) valves. The control head is operated electrically by a suppression control panel and is equipped with a lever for local manual operation.
The electric control head contains a microswitch whose contacts are used to break the electrical circuit to the solenoid when the head is actuated. This reduces the overall power consumption of the fire suppression system. The actuating pin latches in the released position and must be mechanically reset.
A suitable suppression control panel, specifically listed and/or approved for use with the following control heads, shall be provided for supervision of the releasing circuits per NFPA requirements. In addition, a 24 hour back-up power source shall be provided per NFPA requirements.