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

P/N 81-CO2MAN-001

4-37

September 2013

The 1/8-inch copper tubing to the HADs must be protected by 1/2-inch EMT. Water which 

collects in the conduit line and freezes may damage the tubing. This necessitates the draining 

of all low points in tubing conduit which are subject to freezing. If necessary, drill a small hole 

in the conduit or fitting at the low point.

Install the pneumatic detectors on the ceiling of the protected space. Connect each detector 

on a detection system branch line to 1/2-inch conduit. Terminate single branch line conduit at 

a junction box near the pneumatic control head. Conduit bends must be rounded smoothly. 

Fasten and securely brace the conduit. Use standard junction boxes where required to make 

connections.
Run 1/8-inch copper tubing through the conduit, checking each section of tubing for 

obstructions with a manometer prior to installation and prior to making connections, as shown 

in Figure 4-29. Connect the tubing sections by means of flared fittings and connect each 

detector as shown.
Terminate the 1/8-inch tubing for single branch line systems at the junction box near the 

control head. Connect the 1/8-inch tubing to 3/16-inch tubing in the junction box by means of 

a reducing union, and then route 3/16-inch tubing from the junction box to the pneumatic 

control head.

Figure 4-29.  Manometer Pneumatic Detection

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