Kidde Fire Systems Surge Protector P/N 81-CO2MAN-001 Manuale Utente

P/N 81-CO2MAN-001

2-19

September 2013

Actuation of the suppression system is initiated by use of control head(s). Control heads are 

components that attach to the control ports of the carbon dioxide cylinder valves. The control 

head initiates the suppression system discharge by opening the cylinder valve's pilot check. 

This allows carbon dioxide to pressurize the discharge head piston, which opens the main check 

in the valve and discharges the contents of the cylinder.

One control head is used for CO

2

 systems having one or two cylinders. A minimum of two 

control heads are required for suppression systems that have three or more carbon dioxide 

cylinders.

Control heads are also used in conjunction with pressure operated time delays, stop valves, 

and pneumatic transmitters to control the flow of carbon dioxide throughout the piping 

network. All of the control heads are self-venting in the set position to prevent accidental 

discharge in the event of a slow build-up of pressure in a pilot line or a slow leak at the pilot 

check of the cylinder valve.

The lever-operated control head, Part No. WK-870652-000 (Figure 2-20), is used for small, 

manually-actuated suppression systems using one or two carbon dioxide cylinders. It is also 

used as an emergency manual release device for pressure operated control heads and used in 

conjunction with components such as pressure operated time delays and directional (stop) 

valves.

This control head is equipped with an operating lever secured in the closed position by a safety 

pull pin and seal wire. The lever can be rotated to the open position by removing the safety 

pin. This will discharge a cylinder, bypass a time-delay period, or open a directional (stop) 

valve.