Installing the low-voltage 3-button switch on the wall
The Stewart Filmscreen low-voltage control allows the use of Class 2 low- voltage wire to connect to the supplied 3-position momentary wall switch or auxiliary AV switching systems.
The switch control plate is connected to the unit’s J-box at the factory. You can use the switch temporarily in this position to test the AC connection. Remove the switch from the J-box and connect it at an appropriate wall location.
Note: If an IR option has been ordered, the sensor is already connected to the low voltage control box inside the case. The wire is passed through the J-box with the low voltage switch control wiring. Position the sensor appropriately for the location.
Preparing the connection
Before making the electrical connections, you need:
An available AC constant power source
A 4-conductor switch hook-up cable (4-conductor bell wire, communication or category 5 cable is typically used for long runs)
Cat 5, multi-conductor unshielded, or similar type electronic cable can be used to connect the 3-button switch to the LVC. The recommended wire gauge is 20 to 24 AWG. Use plenum-rated cable when required.
Making the connection
The AVS has two J-boxes located on the audience right side of the case: one is for AC power, and the other is for the switch control. Figure 3 illustrates the connections.
1.Connect the switch to the J-box on the side of the case (audience right). Do NOT leave the switch installed in the case.
2.A parallel connection to an outboard audio-visual switching network can be made at this time (optional). Use only momentary switches for this option.
3.Use the switch to test the operation. Refer to the next section for cautions.
AC power
| STOP-Yellow | |
| COMMON-White | |
| UP-Red | |
| DOWN-Black | |
| 4 conductor hook-up cable | |
| 20-24ga recommended, | |
| Category 5 typically used | |
| (NOT supplied) | 3-button |
| |
| | momentary switch |
| Figure 3: Low voltage 3-button switch wiring |
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Automatic Vertical Screen: Owner’s Manual | 5 |
