3.4 KiB
id, aliases, tags, title
| id | aliases | tags | title | |||||
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Lighting Controls Takeoff |
Lighting Controls Takeoff
[!info] See lighting-controls for more on lighting controls systems.
[!info] "Local Control" as a PDI proposal qualification The term "local control only" is sometimes used to indicate no consideration for any lighting control beyond standard devices, (with
$D's being the triac type) however, this phrasing is ambiguous and non-universal. Confirm with pdi-estimating#Bid Estimating on what must be included.
Determine which Systems and Codes are required:
- IBC/IECC 2021 or later: all fixtures 0-10V dimmable.
PDI Lighting Control Configurations
Important
This section is currently not practical
Stand Alone
0-10V dim -- "LV cable" is 2 conductor
Takeoff rough-in for switches and occupancy sensors
- Branch Length = length of room
Takeoff the lighting control relay (DLM)
Takeoff an additional controller if receptacles are controlled
Takeoff homeruns to the DLM (one per controlled circuit)
- Note: Not necessarily per room, several rooms may share a lighting circuit.
Networked
"LV Cable" is twisted-pair-cable
Room Controllers
No room controllers are necessary, lighting zones are switched from a central lighting control panel (LCP)
Switches and Sensors
Takeoff rough-in for switches and occupancy sensors
?? (only if time based; length based on proximity to switch or occupancy sensor) ??
Homeruns
Takeoff 1 circuit homerun per lighting zone.
Wattstopper
PDI default configuration
Room Controllers
For all rooms with dimmable fixtures and/or automatically controlled receptacles, take off (1) of either or both as appropriate.
SWITCHES/LOW VOLTAGE SWITCHES & OCC SENSORS - ROUGH IN/DLM LTG RM CONTROLLER - ...
SWITCHES/LOW VOLTAGE SWITCHES & OCC SENSORS - ROUGH IN/REC PLUG CONTROLLER - ...
Takeoff normal power to the controlled load
- Add LV cable to fixture branch
- Use #12/3 for controlled receptacles
Takeoff rough-in for both the occ sensors and the LV switch
SWITCHES/LOW VOLTAGE SWITCHES & OCC SENSORS - ROUGH IN/... LV SW - WALL ROUGH IN ...
SWITCHES/LOW VOLTAGE SWITCHES & OCC SENSORS - ROUGH IN/... SENSOR LOW VOLTAGE - ROUGH IN ...
- Free air if possible
- Length = length of room
Cat cabling from the controllers on is likely provided by systems
- Confirm with chief or quote language
Corridor Occupancy Sensors
If occupancy sensors are shown in the corridors:
Takeoff homerun back to the electric room
Takeoff (1) DLM controller for each electric room
SWITCHES/LOW VOLTAGE SWITCHES & OCC SENSORS - ROUGH IN/DLM LTG RM CONTROLLER - ...
?? Run free-air down corridor ??
- Length = Length of corridor
Takeoff rough-in for each occupancy sensor shown.
Network Bridge
Check systems quote to determine if network bridges are needed.
Takeoff (1) back box for every ==group of rooms you want together==
?? If not showing, put one in every room with a controller ??
Homeruns
Need a HR into the room for the controllers
- Can link multiple controllers (aka rooms) together if you have the same circuit
- Go back to closest electric room
Custom Switch Boxes
For switch combinations not in COMMON ASSEMBLIES,
create heating-designations based on the most similar.