SILENT KNIGHT 4821 Manuel d'installation Page 80

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Model 4821/4820 Control/Communicator Installation Manual
4-36 150964
4.22.2 Monitoring an Existing Fire Alarm Control
Separate zone connections must be made to both the alarm relay and trouble relay when using
the 4821/4820 Control Panel to monitor an existing fire alarm control. Zone inputs on the
4821/4820 Control Panel are considered Class B (Style A). Refer to Figure 4-27 and Table 4-
8 for wiring configuration and zone programming requirements.
Figure 4-27 Wiring configuration for Alarm Relay and Trouble Relay
Table 4-8: Alarm and Trouble Relay Zone Programming Requirements
Alarm Relay Trouble Relay
Disarmed Response Armed Response Disarmed Response Armed Response
Short Alarm Alarm Trouble Trouble
EOL Ready Ready Ready Ready
Open Trouble Trouble Trouble Trouble
Zone Type Fire Fire
Model 7628
EOL Resistor
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