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I am planning a Theater room in my new home and have some questions about preparation for installing an electric recessed screen. I know the screen motor runs on 110 VAC and the screen is tripped by a low voltage trigger. My question is weather the projector DC output is all I need to plan for wiring or do I need to run to a wall switch for the trigger? I am thinking that if the projector has a DC out that when the projector turns on it will trigger the motor in the screen to come down and go up when the projector is shut off. Any help would be appreciated.
 

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The screen only has a low-voltage control if you order that option, otherwise it's controlled by 110VAC (two inputs, one for up, one for down, never both at the same time).


I've never seen the wiring diagram for a low-voltage controlled one, so I can't say if it includes a wall-switch. I *think* the LV control module lives in the empty space at the end of the screen and you just need always-on AC and the LV switched input to make it all go. You could add a wall switch (SPST) if you wanted to disable the automatic control. If you wanted to be *real* fancy you could have an UP/AUTO/DOWN switch installed, but why bother?


///[email protected]
 

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..I've installed several Dalite LV controls. The Dalite LV relay comes housed in the same electrical box that contains the manual up/down switch. You run power from a wall tap to the switch box, and 14-3 from the switch to the screen housing. You also need to plan for the 12V 2-conductor wire run (I use thermostat wire) from the pj to the switch box. Also, when choosing pj's, make sure the 12VDC output amperage rating on the pj meets or exceeds the LV amperage demand on the switch relay coil. Some of the cheaper pj's 12V power supplies are undersized and you may stand the risk of damage to the pj when coupled with certain screen manufacturer's relay coils.
 
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