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

P/N 81-CO2MAN-001

3-67

September 2013

3-12.4.3.7 Check Valves

Check Valves (See Paragraph 2-4 for Part Numbers) are used to isolate groups of cylinders in 

Main and Reserve systems or in Directional Valve systems designed to discharge a different 

quantity of cylinders for each hazard.

See Paragraph 3-12.4.1.4 (Main and Reserve Manifolds) and Paragraph 3-12.5.2 (Directional 

Valve Systems) for more information.

3-12.4.3.8 Pressure Operated Switches

A Pressure Operated Switch (Part No. 81-486536-000 or 81-981332-000) shall be installed 

between the manifold and the Lockout valve and shall provide an alarm-initiating signal to the 

suppression control panel.

3-12.4.3.9 Odorizers

An odorizer assembly, Part No. 81-897600-000, shall be installed upstream of the lock-out 

valve. In the event a safety outlet ruptures in a locked-out system, the scent from the odorizer 

will provide a warning that carbon dioxide has vented into the area by the safety outlet.

The distribution network should be routed in the most efficient manner possible.

3-12.5.1

HYDRAULIC CALCULATIONS

Hydraulic flow calculations are used to determine the pipe sizes and nozzle orifice codes for the 

system. Kidde Fire Systems CO

2

 Calculation Software (Part No. 81-190001-XXX) or the 

guidelines in NFPA 12 may be used to perform these calculations.

The equivalent lengths for all Kidde pipe objects are included in the software.

See the Kidde Fire Systems CO

2

 Calculation Software User's Manual for additional information.