Optional Accessory Installation — PPC 25
The Priority Page Controller (PPC 25) momentarily silences classroom audio whenever a page is made from a public address (PA) system.
For detailed information, refer to the PPC 25 Installation Instructions, supplied with the device.
NThe Priority Page Controller works with traditional 25 V or 70 V and 4/8 ohm PA systems. It is not designed for, and may not work properly with,
Priority Page Controller included parts:
•Priority Page Controller
•Priority Page Sensor
•
•35' (10.7 m) of sensor cable
•
Installation Procedure
WAll structural steps, anchoring, and electrical installation should be performed by qualified personnel in accordance with local and national building codes, fire and safety codes, and/or local and national electrical codes.
To meet the plenum rating requirement, the Priority Page Sensor assembly must be installed in a
1. Choose suitable locations for the controller and sensor. The controller must be located close to the PVS 204SA and its power supply. The sensor must be located near, and in series with, the speakers.
2. If the sensor is to be located in a plenum space, the junction box (provided) can be used. Knock out an opening at one end of the junction box and attach the cable clamp (see figure at right). Secure the box where the sensor will go.
3. Disconnect the PA system speaker cable from the speaker.
Remove the outer protective jacket from the speaker cable to expose the two speaker wires from the sensor to the speaker (as shown at right). Do not remove the inner protective jackets that cover the individual wires.
2UL-compliant junction box and cover
Open the
Page Sensor
If the sensor is to be located in a plenum space, feed a loop of one of the exposed speaker wires through the cable clamp into the junction box. The other wire must bypass the sensor to be connected later directly to the speaker.
4.Open the top of the Priority Page Sensor and loop the speaker wire that is inside the junction box, tightly around the top part of the sensor.
NLoop only one of the speaker wires around the sensor cover. Do not loop both wires. Polarity need not be observed.
Speaker Cable with Plenum Jacket Intact
Strip plenum jacket from speaker cable to reveal two speaker wires.
Priority
Page
Sensor
Ceiling Mounted
Paging Speaker
The other speaker wire must bypass the sensor and connect directly to the speaker.
•For a 25 V or 70 V system, wrap 5 to 8 loops.
•For a 4/8 ohm system, wrap 2 to 4 loops.