Replacing Alarm Relay Wire

To connect the router to external alarm-reporting devices, attach wires to the relay contacts on the craft interface located to the left of the red and yellow alarm LEDs. A system condition that triggers the red alarm LED on the craft interface also activates the upper alarm relay contact, whereas a less serious alarm condition activates the yellow alarm LED and lower alarm relay contact.

The alarm relay contacts accept wire of any gauge between 28-AWG and 14-AWG (0.08 and 2.08 mm²), which is not provided. Use the gauge of wire appropriate for the external device that you are connecting.

To replace the wires connecting to an alarm-reporting device, follow this procedure (see Figure 50):

1. Disconnect the existing wire at the external device.
2. Prepare the required length of replacement wire with gauge between 28-AWG and 14-AWG (0.08 and 2.08 mm²).
3. Use a 2.5-mm Phillips screwdriver to loosen the small screws on the faceplate of the appropriate alarm relay contact—the upper contact for a device that reports high priority (red) alarms, or the lower contact for the device that reports lower priority (yellow) alarms.
4. Remove existing wires from the alarm relay contact and insert replacement wires (the NC label on one contact means “normally closed,” C means “common,” and NO means “normally open”). Tighten the screws to secure the wire.
5. Attach the other end of the replacement wires to the external device.