9.2.7 Intrusion Detection System | Chicago Public Schools

This section provides information to assist in the design of an Intrusion Detection System.
Intrusion Detection System is placed on Electrical Drawings. Separate drawings are not usually required.
Work Included:

The design professional is to show device locations, power requirements, conduit sizes, wiring requirements and phone line connection.
The Electrical Engineer must contact the IDS (Intrusion Detection System) Manufacturer for specific requirements for conduit size and location for bidding purposes.

Additions/Annexes:

The addition/annex shall have a separate intrusion detection system and control panel.
Provide a backbox adjacent to each new keypad location in the addition/annex with a conduit to the existing school’s intrusion detection/security panel for a keypad to be installed by the Board Safety and Security Department.
Provide a new keypad for the addition/annex system adjacent to the existing school’s security system keypad or turnkey

Security Control Panel shall be located in the MDF Room
Security Keypads: Provide at least 2 keypads for an addition/annex or new school.

For an addition or annex to an existing school locate one keypad just inside the door “on the addition side” where the addition connects to the existing school.
The second keypad is to be located just inside the engineers exterior entrance door. Existing and new locations shall be reviewed with the CPS Safety & Security Department. For a new school locate one keypad just inside the main entrance. The second keypad is to be located just inside the engineer’s exterior entrance door / delivery entrance.
Larger schools may require more keypads, with approval of CPS Safety & Security

More than one central processor. Every central processor requires its own keypad for control of the system.
Areas of the school may be partitioned such as a separate keypad for access to computer labs or athletic department for off-hours use.
If Staff parking is located away from other keypad accessible entrance locations.

Provide one additional spare keypad for user’s stock.

Motion Detectors

The Quad PIR should be utilized for most locations. The Microwave/PIR should be used where temperature is not constant, such as a loading dock.
Typical coverage for a motion detector is about 50 feet wide and 40 feet out.
Classrooms:

One motion detector is required and located in the center of the back wall, not facing the windows.
A motion detector is not required in typical classrooms above the first floor; where the closest edge of the window is further than 15 feet from the ground, lower roof, ladder, fire escape, etc.

Hallways and Lobbies:

Usually more than one detector is required to sufficiently cover hallway and lobbies.
For example two Quad PIR’s with the 40 feet by 50 feet mirror, installed at both ends of the hallway, can cover an 80-foot hallway.
When locating motion detectors in hallways and lobbies special attention is required to cover exterior entrance doors, elevators, and stairwell doors. Exterior doors with keypads have door contacts.
Provide motion detectors in the main corridors on all floors. Provide a minimum of three motion detectors on each floor.

Stairwells: Locate in stairwells that have doors with direct access to outside. Devices should be located on the level where the outside door is located.
Computer Labs: Locate two detectors in each lab on all floors, on opposite walls facing each other, but not facing windows.
Dining Areas:

Motion detectors are required in the dining area, kitchen and food storage area.
Dining areas may require more than one motion detector to be sufficiently covered.

Administrative Offices: Locate in principal’s office, assistant-principal’s office, student services office, reception area, faculty lounge, and conference room.
Loading Docks: Locate at least one Microwave\PIR motion detector in the loading dock area.
Engineers Storage Area: Locate motion detector in engineer’s storage that may also store valuables.
Main Distribution Frame (MDF) Room: Locate one motion detector in the MDF room.
Gymnasiums/Multi-Purpose Dining/Gym Rooms: Locate two motion detectors with wire guards in the gymnasium or large multi- purpose rooms.
Miscellaneous Areas: There are other locations that may require motion detection. Areas with valuables such as network equipment, mechanical rooms with exterior access, basement rooms with windows, yard storage, etc.

Status Contacts:

Door contacts are flush mounted and require a template from the IDSS. This template is supplied to the frame and door manufacturer for preparation of door and frame.
The contact is usually overhead mounted and centered at 6 inches from the latch edge.
Conduit is usually connected to the frame preparation enclosure. If the frame does not have an enclosure, a junction box large enough to facilitate the flush contact is required.
Provide door contacts for each exterior door, including non-connected buildings, and roof hatch.
Additional locations may be required as directed by CPS Safety & Security.

Keypads:

Keypads should be mounted 48 inches above finished floor.
The back box is supplied by the IDSS and installed by the electrical contractor.

Addressable Devices/Motion Detectors:

Locate at 9 feet 6 inches above floor (maximum height) otherwise 6 inches from ceilings and other obstructions close to the device being monitored. Obtain CPS Safety & Security approval before installing at less than 8 feet from floor.
A special back box is supplied by the IDSS and is installed by the electrical contractor.

General:

The devices used are for the most part addressable or connected to an addressable device. Therefore, requiring less wire and smaller conduit size than conventional hardwired systems.
Security System shall be in its own conduit system.

Addressable Devices:

Addressable devices like the Quad PIR and the 2 point remote module are connected to the 2 wire polling loop.
The two wire polling loop has a maximum wire distance of 2000 feet or 3200 feet with loop extender, using 16 gauge wire.

Non-Addressable Devices:

Non-addressable devices such as a door contact or standard motion detector are wired to the addressable device using 16-gauge wire.
Non-addressable devices like the Microwave\ PIR also require power from the Security Control Panel. Multiplex devices can be powered on the same power wires.
Typically the IDSS will pull a 4-wire cable, which will provide the 2 wire polling loop and power for nonaddressable devices.

Keypad:

The remote keypad requires a 4 conductor 16- gauge cable. Both keypads can be on the same cable.
The maximum length is 1000 feet divided by the number of keypads.

The following examples are typical which may, or may not apply to your specific project:

Typical Drawing information for (option 1) in Scope

Show locations of Security Control Panel, Remote Security Keypad, Phone Line Connection, Quad PIR, Microwave\PIR, Door Contacts, Overhead Door Contacts and 2 Point Remote Addressable Module.
Sample of typical drawing notes: Intrusion Detection System Notes

See Section 16720 for wiring information.
Provide conduit per wiring requirements.
Verify exact location of devices with Intrusion Detection System Subcontractor before installing.

Typical Drawing information for (option 2) in Scope

Show locations of Security Control Panel, Remote Security Keypad, Phone Line Connection, Quad PIR, Microwave\PIR, Door Contacts, Overhead Door Contacts and 2 Point Remote Addressable Module.
Show conduit connecting Security Control Panel to Motion Detectors, Status Contacts, Addressable Devices and Remote Security Keypad and size according to wiring requirements.
Show 3/4” conduit from Security Control Panel to Breaker Box for Power.
Show 3/4” conduit from Security Control Panel to Main Telephone Room.
Sample of typical drawing notes: Intrusion Detection System Notes.

See Section 16720 for wiring information.
Confirm conduit sizes and conduit locations with Intrusion Detection Systems Subcontractor (IDSS).
Verify exact location of devices with Intrusion Detection System Subcontractor.