SECTION 16506
LIGHTING OCCUPANCY SENSORS
PART 1 - GENERAL
1.01
REQUIREMENTS
A.
1.02
1.03
1.04
The general provisions of the Contract, including General and Supplementary
Conditions and General Requirements, apply to the work specified in this
Section.
SCOPE
A.
The work covered under this Section shall include furnishing and installing a
complete operational occupancy sensor based lighting control system as shown
on the Drawings, detailed in the manufacturer’s submittal and as herein
specified.
B.
Work described in this section shall be coordinated with all applicable plans and
specifications, including by not limited to interfacing with microprocessor based
Lighting Control Systems, wiring, raceways, boxes and fittings, luminaires, and
HAVC systems.
QUALITY ASSURANCE
A.
Occupancy sensors shall conform to the requirements of the National Electrical
Code (NEC), state and local codes, and these Specifications.
B.
All components shall be listed by Underwriter's Laboratories, Inc. (UL) for their
intended use and shall bear the UL label.
C.
Products supplied shall be from a single manufacturer that has been
continuously involved in manufacturing of occupancy sensors for a minimum of
five (5) years. Mixing of manufacturers shall not be allowed.
D.
Products shall be manufactured by an ISO 9002 certified manufacturing facility
and shall have a defect rating of less than 1/3 of 1%.
E.
Wall switch products must be capable of withstanding the effects of inrush
current. Submittals shall clearly indicate the method used.
SUBMITTALS
A.
Submittals are required in accordance with SECTION 16010 of these
specifications. Submittals shall include, but not be limited to the following for
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SECTION 16506
review. Submittals not containing all of the information listed below will be
rejected.
1.05
1.06
1.
Manufacturers shall substantiate conformance to this specification by
providing the necessary documents, performance data and wiring
diagrams. Any deviations to the specifications must be clearly stated by
letter and submitted.
2.
Submit a scaled building lighting plan (minimum size of 1/16” = 1’-0”)
clearly marked by the manufacturer showing proper product, location and
orientation of each sensor and power pack (switch pack). Plans shall
show detection coverage patterns. If necessary for clarity, provide a 1/8”
= 1’-0” scaled plan or one plan with coverage areas shown and another
plan with the other information shown. Illegible drawings will be rejected.
3.
Submit interconnections diagrams per major subsystem and interfacing
with Lighting Control Panels (LCP) [Refer to SECTION 16505], showing
proper wiring.
4.
Submit standard catalog literature which includes
specifications indicating compliance to the specification.
5.
Catalog sheets must clearly state any load restrictions when used with
electronic ballasts.
performance
SYSTEM DESCRIPTION
A.
The objective of this specification section is to ensure the proper installation of
the occupancy sensor based lighting control system so that lighting is turned off
automatically after reasonable time delay when a room or area is vacated by the
last person to occupy said room or area.
B.
The occupancy sensor based lighting control shall accommodate all conditions of
space utilization and irregular work hours and habits.
SYSTEM TEST AND ACCEPTANCE
A.
Prior to the Architect/Engineer’s final site visitation, and acceptance of each
construction phase, this Contractor shall conduct a complete operation test of
each system including each device. The systems shall test free from grounds,
shorts, and other faults. All connections shall be thoroughly checked for
mechanical and electrical connection. All equipment shall be demonstrated to
operate in accordance with the requirements set forth in these Specifications and
as shown on the Drawings.
B.
This Contractor shall perform all tests in the presence of the Owner. This
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Contractor shall furnish all personnel for use in the tests.
C.
1.07
Training
A.
1.08
When the work on the system has been completed and is ready for final review,
a visit shall be made by the Owner at which time the Contractor shall
demonstrate that the requirements of the Contract as it applies to this system
have been carried out and that the system has been adjusted and operated in
accordance herewith.
Upon completion of the project, the Contractor and manufacturer’s factory
authorized representative shall provide a minimum of four (4) hours of training to
familiarize the Owner with the operation, use, adjustment, and problem solving
diagnosis of the occupancy sensing devices and systems.
WARRANTY
A.
This Contractor shall warrant all equipment furnished in accordance with this
specification to be undamaged, free of defects in materials and workmanship,
and in conformance with these specifications. The warranty shall include repair
or replacement, and testing without charge to the Owner on all or any parts of
equipment which are found to be damaged, defective or non-conforming. There
shall be no deductibles applied to such warranty. Satisfactory warranty
documents shall be furnished. Refer to SECTION 01740 WARRANTIES AND
BONDS.
PART 2 - PRODUCTS
2.01
2.02
MANUFACTURERS
A.
The lighting occupancy sensors shall be manufactured by THE WATT
STOPPER, as listed or equal by GREENGATE (COOPER CONTROLS),
HUBBELL, or SENSOR SWITCH.
B.
The listing of any manufacturer as “equal” does not imply automatic approval.
This Contractor shall ensure submittals made are for sensors and associated
equipment which meets or exceeds the specifications included herein.
LIGHTING OCCUPANCY SENSORS
A.
Occupancy sensors shall consist of, but not be limited to the following:
1.
Sensing technology shall be passive infrared (PIR), ultrasonic (or
microphonics™), dual technology having both PIR and ultrasonic (or
microphonics™).
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B.
SECTION 16506
2.
Passive infrared sensors shall provide high immunity to false triggering
form RFI (hand-held radios) and EMI (electrical noise in the line). The
PIR sensors shall have a multiple segmented Fresnel lens, in multi-tier
configuration, with grooves-in to eliminate dust and residue build-up.
3.
Ultrasonic sensors shall be able to adjust the detection threshold
dynamically to compensate for constantly changing levels of activity and
air flow throughout controlled spaces. Ultrasonic operating frequency
shall be crystal controlled at 32 kHz within + 0.002% tolerance, or 40 kHz
within + 0.002% tolerance to assure reliable performance and eliminate
sensor cross-talk.
Sensors using multiple frequencies are not
acceptable. Microphonic™ sensors shall be able to operate within set
tolerances that will mimic ultrasonic to ensure reliable performance.
4.
Dual technology sensors shall consist of PIR and ultrasonic (or
microphonics™) technologies for occupancy detection.
5.
All sensors shall be capable of operating normally with electronic ballasts,
PL lamp systems and rated motor loads.
6.
Coverage of sensors shall remain constant after sensitivity control has
been set. No automatic reduction shall occur in coverage due to the
cycling of air conditioner or heating fans.
7.
All sensors shall have readily accessible, user adjustable settings for time
delay and sensitivity. Settings shall be located on the sensor (not the
control unit) and shall be recessed to limit tampering.
8.
In the event of failure, a bypass manual override shall be provided on
each sensor. When bypass is utilized, lighting shall remain on constantly
or control shall divert to a wall switch or lighting control panel until the
sensor is replaced. This control shall be recessed to prevent tampering.
9.
All sensors shall provide an LED as a visual means of indication at all
times to verify that motion is being detected during both testing and
normal operation.
Ceiling mounted room occupancy sensors shall be low voltage dual technology
type consisting of passive infrared (PIR) and ultrasonic (or microphonics™)
technologies with 360° coverage for large classrooms, open office spaces or
areas up to 1600 square feet; WATT STOPPER Model DT-300. Sensors shall
operate on 12 to 24 VAC or VDC and NEC Class 2 wiring. Each sensor shall be
complete with one (1) power pack or two (2) power packs for rooms requiring
two (2) lighting branch circuits. Rooms requiring multiple sensors may only
require one (1) power pack for multiple sensors, where shown on the Drawings.
Sensors shall also be equipped with an additional isolated relay.
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1.
C.
SECTION 16506
Occupancy sensors shown on the Drawings to be powered from a
Lighting Control Panel generally will not require a power pack.
Ceiling mounted (or wall mounted where shown on the Drawings) room
occupancy sensors shall be low voltage dual technology type consisting of
passive infrared (PIR) and ultrasonic (or microphonics™) technologies for
directional one-way coverage for classrooms, offices or areas up to 1000 square
feet; WATT STOPPER Model DT-200. Sensors shall operate on 12 to 24 VAC
or VDC and NEC Class 2 wiring. Each sensor shall be complete with one (1)
power pack or two (2) power packs for rooms requiring two (2) lighting branch
circuits. Rooms requiring multiple sensors may only require one (1) power pack
for multiple sensors, where shown on the Drawings. Sensors shall also be
equipped with an additional isolated relay.
1.
Occupancy sensors shown on the Drawings to be powered from a
Lighting Control Panel generally will not require a power pack.
D.
Corridor ceiling mounted occupancy sensors shall be low voltage ultrasonic (or
microphonics™) technology type with coverage of approximately ten (10) feet by
ninety (90) linear feet; WATT STOPPER Model WT-2250. Corridor lobbies or
areas wider than ten (10) feet shall have ceiling mounted low voltage ultrasonic
technology type sensors with 360° coverage of approximately 2200 square feet;
WATT STOPPER Model WT-2200. Sensors shall operate on 12 to 24 VAC or
VDC and NEC Class 2 wiring. Sensors shall be powered from a lighting control
panel or power pack and/or as shown on the Drawings. Sensors shall also be
equipped with an additional isolated relay.
E.
Wall switch occupancy sensors shall be line voltage ultrasonic (or
microphonics™) technology type with coverage of approximately 30 to 40 square
feet for use in small utility/storage rooms, small toilet rooms, etc. as shown on
the Drawings; WATT STOPPER Model UW-100. Sensors shall operate on 120
or 277 volts. Load rating shall be 0 to 800 watts ballast or tungsten at 120 volts
and 0 to 1200 watts ballast at 277 volts. Sensor shall use zero-cross circuitry to
detect when the sine wave crosses at the “zero-point” so as to minimize wear on
the switching contact.
1.
F.
Wall switch occupancy sensors shall have stainless steel cover plates,
not the plastic cover plates that may be included in the switch packaging.
See Specification Section 16130 for type.
Wall switch occupancy sensors, with dual ON/OFF button switches and dual
relays for controlling two lighting loads or circuits, shall be line voltage ultrasonic
(or microphonics™) technology type with coverage of approximately 30 to 40
square feet for use in small utility/storage rooms, small toilet rooms, etc. as
shown on the Drawings; WATT STOPPER Model UW-200. Sensors shall
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operate on 120 or 277 volts. Load rating shall be 0 to 800 watts ballast or
tungsten at 120 volts and 0 to 1200 watts ballast at 277 volts. Sensor shall use
zero-cross circuitry on both relays to detect when the sine wave crosses at the
“zero-point” so as to minimize wear on the switching contact.
1.
2.03
2.04
Wall switch occupancy sensors shall have stainless steel cover plates,
not the plastic cover plates that may be included in the switch packaging.
See Specification Section 16130 for type.
POWER PACKS AND AUXILIARY RELAY PACKS CONTROL UNITS
A.
Power packs shall accept 120 or 277 volts, be plenum rated, and provide Class 2
power to a minimum of two (2) occupancy sensors. Power packs shall be able to
externally mount through a 1/2” knock-out on a standard electrical enclosure
(junction box) and be an integrated, self-contained unit consisting internally of an
isolated load switching control relay (load rated 20 amperes at 120 or 277 volts)
and a transformer to provide low voltage power; WATT STOPPER Model BZ100. Power pack shall provide a minimum of 150mA at 24 VDC to drive
occupancy sensors and auxiliary relay packs.
B.
Power packs shall use zero-cross circuitry to detect when the sine wave crosses
at the “zero-point” so as to minimize wear on the switching contact.
C.
Auxiliary relay packs shall be the same self-contained type unit as the power
pack hereinbefore described, except shall not include a transformer; WATT
STOPPER Model S120/277/347E-P. The auxiliary relay pack shall be used to
control another lighting load with a different line voltage than the power pack.
Auxiliary relay packs shall be powered from a power pack with 24 VDC.
ISOLATED RELAY
A.
Sensors hereinbefore described to include an isolated relay shall have the relay
be internal with Normally Open, Normally Closed and Common outputs for use
with Lighting Control Panels (LCP), HVAC control, and other control options as
shown on the Drawings. Sensors utilizing separate components or specially
modified units to achieve this function shall not be acceptable.
B.
Corridor and other location occupancy sensors indicated on the Drawings to
interface with a Lighting Control Panel (LCP) shall have the isolated relay send a
contact closure signal to the Lighting Control System. These sensors shall be
powered from the LCP and not by a power pack. Operation of sensors in
corridors and other areas where sensors are interfaced with the lighting control
system shall operate in a manner such the lighting in the controlled areas is
“held-on” during normal school operating hours. After normal schools hours,
these controlled areas shall respond to the occupancy sensors for lighting
control. See the Drawings and details for the sequence of operations via the
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LCP.
2.05
WIRING
A.
Low voltage wiring between occupancy sensors and power packs shall be three
(3) conductor, No. 18 AWG, unshielded, plenum rated with a temperature range
for dry locations of minus ten (10) degrees C to sixty (60) degrees C. A cable
that will meet this specification is WEST PENN Cat. No. 25234B.
B.
Low voltage wiring between occupancy sensors and Lighting Control Panels
(LCP) shall be three (3) conductor, No. 18 AWG, unshielded, plenum rated with
a temperature range for dry locations of minus ten (10) degrees C to sixty (60)
degrees C. A cable that will meet this specification is WEST PENN Cat. No.
25234B.
PART 3 - EXECUTION
3.01
INSTALLATION
A.
It shall be the Contractor’s responsibility to provide the quantity of occupancy
sensors required for complete and proper volumetric coverage to completely
cover the controlled areas. Rooms shall have ninety (90) to one hundred (100)
percent volumetric coverage to completely cover the controlled areas to
accommodate all occupancy habits of single or multiple occupants at any
location within the rooms. Proper judgment must be exercised in executing the
work so as to ensure the best possible installation in the available space and to
overcome local difficulties due to space limitations, interference of structural
components, or furnishings in the rooms or spaces. The locations and quantities
of sensors shown on the Drawings are based on coverage patterns of THE
WATT STOPPER sensors. Sensors of other approved manufacturers may
require different quantities of sensors for full coverage of spaces being
controlled. The sensors shown on the drawings are diagrammatic and do not
necessarily show the exact locations of the sensors. This contractor shall confirm
with the occupancy sensors manufacturer the exact quantities of sensors and
power packs at time of bid. This Contractor shall provide additional sensors if
required to properly and completely cover the respective rooms at no additional
cost to the Owner.
B.
Line voltage wall switch type occupancy sensors shall be installed in a suitable
wall outlet box in a method recommended by the equipment manufacturer similar
to a standard line voltage light switch.
C.
Low voltage occupancy sensors shall be securely mounted to a ceiling or wall
mounted junction box in a method recommended by the sensor manufacturer.
Ceiling mounted junction boxes shall be supported from the building structure
with no less than one (1) ¼” threaded rod. Sensors shall be wired as detailed on
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the Drawings and as recommended by the equipment manufacturer.
D.
Power packs shall be located in accessible ceiling spaces and securely mounted
to a standard electrical enclosure (junction box) through a standard 1/2” chase
nipple. Plastic clips into the junction box shall not be acceptable. Junction box
shall be supported from the building structure with no less than one (1) ¼”
threaded rod. All Class 1 wiring shall pass through the chase nipple into the
junction box without any exposure of wire leads. Low voltage Class 2 wiring to
the sensors shall not be exposed in finished spaces. Power packs shall be wired
as detailed on the Drawings and as recommended by the equipment
manufacturer.
E.
Supports shall not terminate or be fastened directly to the roof decking except
where specifically approved by the Owner.
F.
Wiring:
1.
All low voltage field wiring in finished and unfinished spaces shall be
installed by this Contractor in 1/2-inch conduit and/or surface metal
raceway as shown on the Drawings or hereinbefore specified elsewhere.
Conduit fill shall not exceed the conduit space capacity.
2.
All low voltage field wiring to be installed in areas without a ceiling or in
areas without an accessible ceiling shall be installed by this Contractor in
1/2-inch conduit.
3.
All low voltage field wiring to be installed in areas with accessible ceilings
shall be installed by this Contractor bundled together and run exposed
above the ceilings. Bundles shall be supported by "J" hooks mounted not
more than four (4) feet on center. “J” hooks shall be dedicated to the
wiring specified in this specification section.
4.
All low voltage field wiring shall be run at right angles to the building
structure.
5.
All low voltage field wiring shall be installed below the roof/floor structural
supports (joists, beams, girders, etc.). Wiring installed between the
structural supports mentioned above and the roof or floor deck will not be
acceptable.
6.
All low voltage field wiring penetrations through new and/or existing walls
shall be sleeved. Minimum sleeve size shall be one (1) inch. All sleeves
shall be bushed both sides.
7.
All low voltage field wiring for the occupancy sensor systems shall be
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furnished and installed by this Contractor. All junction box covers shall be
stenciled for distinct identification.
G.
3.02
8.
All wiring connections shall be made by this Contractor as shown on the
Drawings and as recommended by the equipment manufacturer. Splices
shall be made only in junction boxes.
9.
All occupancy sensor system wiring shall be checked and tested by this
Contractor to insure the system is free from grounds, opens, and shorts.
10.
Contractor shall test all low voltage cable for integrity and proper
operation of the system.
The Contractor shall arrange a pre-installation meeting with the occupancy
sensors manufacturer’s factory authorized representative, at the project facility to
verify proper placement of sensors and installation criteria.
TESTING
A.
Sensor Testing and Adjustment:
1.
At the time of installation, the Contractor shall be responsible for testing
and adjusting each sensor for proper detection of motion appropriate to
room usage. The Contractor shall follow the testing and adjustment
procedures as written in the installation instructions for each sensor
model. Note: Due to room conditions it may be necessary for the
Contractor to make adjustments, change the location or type of
sensor to obtain proper operation and coverage of the system in
each room and should therefore make labor and material
allowances for such changes and adjustments.
END OF SECTION
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