Control PanelInstallation en 7

2.5

 

Connecting Earth Ground

2.5.1

 

Terminal 10

 

 

To help prevent damage from electrostatic charges or other transient electrical surges,

 

 

connect the system to earth ground at Terminal 10 before making other connections.

 

 

Recommended earth ground references are a grounding rod or a cold water pipe.

 

 

 

 

 

Warning!

 

!

Do not use telephone or electrical ground for the earth ground connection. Use 14 AWG (1.8

 

mm) to 16 AWG (1.5 mm) wire when making the connection. Do not connect other control

 

 

 

 

panel terminals to earth ground.

 

 

 

2.5.2

 

Ground Fault Detect Enable

 

 

 

 

i

Notice!

 

To meet UL 864 requirements, enable Ground Fault Detect.

 

 

 

 

 

 

 

A ground fault is a circuit impedance to earth ground. The control panel has a ground fault

 

 

detection circuit that, when enabled, detects ground faults on Terminals 1 to 9 and 11 to 36.

 

 

The control panel also detects and annunciates ground faults on any device connected to it.

 

 

If a ground fault condition occurs, the keypads display SERVC GND FAULT and the control

 

 

panel sends a GROUND FAULT TROUBLE, AREA 1. When the control panel recognizes that the

 

 

ground fault condition is corrected, and remains corrected for between 5 to 45 consecutive

 

 

seconds, a Restoral Report is sent.

2.5.3

 

Enabling Ground Fault Detection

 

 

To enable the Ground Fault Detect Enable feature, lock (close) the S4 Ground Fault Detect Pin

 

 

on the control panel.

Bosch Security Systens, Inc.

UL Installation Instructions

2012.12 02 F.01U.265.462

Page 7
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Bosch Appliances D9412GV4 Connecting Earth Ground, Terminal, Ground Fault Detect Enable, Enabling Ground Fault Detection

D9412GV4 specifications

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