vault backup: 2025-12-17 17:03:56
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@@ -24,111 +24,91 @@ title: Lighting Controls Takeoff
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Determine which Systems and Codes are required:
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* _IBC/IECC 2021 or later:_ all fixtures 0-10V dimmable.
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## PDI Lighting Control Configurations
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* `System` = "LV - Lighting Control System"
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> [!important]
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> This section is currently not practical
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## Wall Switches
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### Stand Alone
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> [!tip]
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> For switch combinations not in `COMMON ASSEMBLIES`,
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> create [[heating-designations]] based on the most similar.
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0-10V dim --- "LV cable" is 2 conductor
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## Analog Controls
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Takeoff rough-in for switches and occupancy sensors
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* **Branch Length** = length of room
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24V sensors. Typical of BOH spaces too large for wall sensors.
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Takeoff the lighting control relay (DLM)
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1. `COMMON ASSEMBLIES`/`SWITCHES`/`CEILING OCC SENSOR ...`
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**Count:** as shown.
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Takeoff an additional controller if receptacles are controlled
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2. `COMMON ASSEMBLIES`/`SWITCHES`/`POWER PACK FOR OCC SENSOR ...`
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**Count:** each circuit controlled by analog sensors. Minimum 1 per sensor.
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Takeoff homeruns to the DLM (one per controlled circuit)
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* Note: Not necessarily per room, several rooms may share a lighting circuit.
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## Digital Controls
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### Networked
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Applicable to all digital control systems
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(i.e. "Standalone" and "Centralized", wired and wireless)
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"LV Cable" is [[twisted-pair-cable]]
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#### Room Controllers
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No room controllers are necessary,
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lighting zones are switched from a central lighting control panel (LCP)
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#### Switches and Sensors
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Takeoff rough-in for switches and occupancy sensors
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??
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(only if time based; length based on proximity to switch or occupancy sensor)
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??
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#### Homeruns
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Takeoff 1 circuit homerun per lighting zone.
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### Wattstopper
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PDI default configuration
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#### Room Controllers
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For all rooms with dimmable fixtures
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and/or automatically controlled receptacles,
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take off (1) of either or both as appropriate.
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`SWITCHES`/`LOW VOLTAGE SWITCHES & OCC SENSORS - ROUGH IN`/`DLM LTG RM CONTROLLER - ...`
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`SWITCHES`/`LOW VOLTAGE SWITCHES & OCC SENSORS - ROUGH IN`/`REC PLUG CONTROLLER - ...`
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### General
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Takeoff normal power to the controlled load
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* Add LV cable to fixture branch
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* Use \#12/3 for controlled receptacles
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* Use switched assemblies (\#12/3) for controlled receptacles
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Takeoff rough-in for both the occ sensors and the LV switch
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#### Digital Sensors
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`SWITCHES`/`LOW VOLTAGE SWITCHES & OCC SENSORS - ROUGH IN`/`... LV SW - WALL ROUGH IN ...`
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1. `COMMON ASSEMBLIES`/`SWITCHES`/`LOW VOLTAGE SWITCHES & OCC SENSORS - ROUGH IN`/...
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* `... LV SW - WALL ROUGH IN ...`
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* `... SENSOR LOW VOLTAGE - ROUGH IN ...`
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`SWITCHES`/`LOW VOLTAGE SWITCHES & OCC SENSORS - ROUGH IN`/`... SENSOR LOW VOLTAGE - ROUGH IN ...`
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### "Standalone" Systems
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* Free air if possible
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* **Length** = length of room
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Room controllers distributed throughout controlled areas.
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Cat cabling from the controllers on is likely provided by systems
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* Confirm with chief or quote language
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> [!important] "Room controllers"
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> As I have always understood it, and other manufacturers tend to agree,
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> a room controller _necessarily_ controls multiple zones
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> (otherwise "zone controller" would be better),
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> however PDI terminology is based on Wattstopper's.
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#### Corridor Occupancy Sensors
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`COMMON ASSEMBLIES`/`SWITCHES`/`LOW VOLTAGE SWITCHES & OCC SENSORS - ROUGH IN`/...
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If occupancy sensors are shown in the corridors:
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1. .../`DLM LTG RM CONTROLLER - ...`
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**Count:** each lighting control zone.
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Takeoff homerun back to the electric room
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2. .../`REC PLUG CONTROLLER - ...`
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**Count:** each receptacle control zone.
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Takeoff (1) DLM controller for each electric room
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3. `HEATING`/`Network Bridge - Blank 4SQ`
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**Count:** each controller.
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`SWITCHES`/`LOW VOLTAGE SWITCHES & OCC SENSORS - ROUGH IN`/`DLM LTG RM CONTROLLER - ...`
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Coordinate with PDS to determine if necessary.
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??
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Run free-air down corridor
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??
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4. `COMMON ASSEMBLIES`/`PDI BRANCH CKT HOME RUNS`/... (_without_ dimming cable)
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**Count:** each _circuit_.
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* **Length** = Length of corridor
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### "Centralized" Systems
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Takeoff rough-in for each occupancy sensor shown.
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Zones switched and dimmed from central lighting control panel (LCP).
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#### Network Bridge
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1. `COMMON ASSEMBLIES`/`DISTRIBUTION`/`LIGHTING CONTROL PANEL INSTALLATION`/...
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Check systems quote to determine if network bridges are needed.
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2. `COMMON ASSEMBLIES`/`PDI BRANCH CKT HOME RUNS`/... (_with_ dimming cable)
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**Count:** each _lighting control zone_.
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Takeoff (1) back box for every ==group of rooms you want together==
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%%
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??
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If not showing, put one in every room with a controller
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??
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### Somewhere In Between
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#### Homeruns
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The dichotomy of [[#"Standalone" Systems]] vs. [[#"Centralized" Systems]]
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assumes zones will be controlled either
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(1) right next to the fixture or (2) in the nearest electrical room.
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Need a HR into the room for the controllers
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* Can link multiple controllers (aka rooms) together if you have the same circuit
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* Go back to closest electric room
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I think just as common is 3--5 circuit controllers above the ceiling.
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## Custom Switch Boxes
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1. `HEATING`/`Lighting Control Room Controller - n Circuit`
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**Count:** each controller.
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For switch combinations not in `COMMON ASSEMBLIES`,
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create [[heating-designations]] based on the most similar.
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2. `COMMON ASSEMBLIES`/`PDI BRANCH CKT HOME RUNS`/... (_without_ dimming cable)
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**Length:** route to room.
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**Count:** each circuit.
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%%
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