Application-Based Engineering Specification
Water Leak Detection System for Large Non-Raised Floor Areas
Specwriter’s Notes:
1.
This section addresses the installation of more extensive fluid leak alarm systems
in largenon-raised floor areas, typically over 800 square feet, or multiple smaller
areas to be monitored at a central location. Applicable locations include
library/document/museum storage, food preparation areas, warehouses,
transportation facilities, and building basements and sub-cellars.
2.
For options such as Autodialer, Battery-Backup please contact your local Tracetek
Representative.
1.
General
1.1. Furnish a complete water leak detection system for the area(s) indicated on the
contract drawings, including locating alarm panel, sensor interface modules, sensing
probes, and auxiliary equipment that detects and locates the presence of water. The
sensing system shall be constructed such that only corrosion resistant parts are
exposed to the environment. The system shall include all components required for
the specific installation. The system shall sense the presence of a leak(s), locate the
leak(s), sound an audible alarm, activate alarm output contacts, and provide RS-485
interface to the BMS. The system shall be supervised and self-diagnostic in design.
The system shall differentiate between leak and supervisory alarm status, and shall
locate point of required service.
1.2. The system shall be TraceTek System Model 1200NR, manufactured by Tyco
Thermal Controls, Menlo Park, CA and Industrial Heater, Inc., 2941 Kate Bond Blvd.,
Suite 101, Bartlett, TN 38133.
2.
Products
2.1. The locating alarm panel shall indicate the name of the room (in plain English) and
zone number of any fluid detected at any point on the entire sensor system. The
panel shall sound a local alarm, and provide digital and RS-485 outputs to security
or BMS systems. The panel shall provide system diagnostics to continually
monitor all sensor systems for maintenance requirements such as low level
contamination, continuity, ground fault, or electronic failure. The panel shall
provide 1024 event data logging with non-volatile memory. The panel shall
provide RS-485 output in either Modbus or Johnson Controls Metasys N2 protocol
to be interfaced into any BMS system. Systems utilizing proprietary communication
protocols are not acceptable.
2.2. The locating alarm panel shall be capable of monitoring up to 3100 zones of sensing
cable or sensing probes and to provide user interface for up to 31 sensor interface
modules. The panel shall continue to monitor all of the probes even after detecting
and locating the leak or service event. The system shall re-alarm on movement of
the first event or upon detection of subsequent events. The panel shall provide
Application-Based Engineering Specification
diagnostics to indicate if maintenance on the sensor probes is required. The panel
shall provide full system diagnostics on the detection and measurement circuitry. If
the required service is due to contamination or electrical ground fault on any sensor
the panel shall indicate both the magnitude and location of the contamination or the
ground fault. The system shall continuously monitor the sensing probes and
interconnecting cables for continuity. The panel shall not require any operator
programming and shall be capable of automatically calibrating the entire system
including components when power is supplied. Locator modules requiring
programming for leak detection and location are not acceptable.
2.3. Interconnection between the locating alarm panel and the sensor interface modules
shall be via 4-wire, low voltage jumper wiring. This wiring shall provide both power
and communication for the sensor interface modules. Up to 31 sensor interface
modules may be connected to each locating alarm panel.
2.4. The sensing probes shall be low profile design, extending no more than 1.25” off
the floor or wall to avoid interference with conduit, wiring, and piping. The sensing
probe shall be constructed from non-ferrous parts. Probe contacts shall be
stainless steel grade 363 or higher. The sensing probe shall have full length
mounting flanges, suitable for either mechanical fasteners or adhesive attachment.
Probe body shall be high visibility yellow epoxy-coated aluminum. Probe shall be a
passive sensor, containing only potted, electronic components. Sensing probes
with internal electromechanical components are not acceptable.
2.5. The water sensing probe(s) shall be interconnected in daisy-chain fashion, utilizing
standard low voltage, plenum rated Tracetek jumper wire. The sensing probes
shall be supplied either connectorized or with wiring leads as required for ease of
installation.
2.6. Cleaning the probes, if required, shall be possible in place using a damp cloth. The
probe shall dry and reset at the module immediately upon removal from free water.
No shaking or mechanical action shall be required.
3.
Execution
3.1. All TraceTek system components shall be installed per NEC and in accordance with
manufacturer's Installation Instructions. The installer shall be responsible for
providing a clean and functional system. Supervision and training shall be available
from a TraceTek distributor or other personnel authorized by TraceTek Group.
3.2. The sensing probes shall be attached to either vertical or horizontal surfaces as
required. For adhesive attachment, utilizing construction mastic (3M type 4975).
3.3. A hard copy graphic display map shall be prepared after completion of installation
from "As Built" drawings furnished by contractor. The map shall indicate the location
of the probes, connectors, landmarks such as equipment, walls, drains and cable
zone readings per manufacturer's instructions. Map shall be mounted near the
alarm module.
Application-Based Engineering Specification
3.4. The TraceTek system shall be commissioned upon completion of the installation
by personnel authorized by the TraceTek Group in accordance with
manufacturer’s instructions. At this time demonstration and basic operation shall
be provided to the owner. At the time of commissioning the system, the Tracetek
supplier shall provide the Owner or Owners Representative with the name of an
authorized Tracetek Service Contractor who can provide preventive maintenance
and service contracts for the system.