Honeywell EXCEL ADT-HRSI - Manual (Page 2)

ADT-HRSI INTELLIGENT HEAT DETECTOR
74-3346 2
Device mapping allows the Signature loop controller to
discover:
- Unexpected additional device addresses
- Missing device addresses
- Changes to the wiring in the circuit.
Stand-alone Operation:
A decentralized alarm decision by the detector is guaranteed.
On-board intelligence permits the detector to operate in
stand-alone mode. If loop controller CPU communications fail
for more than 4 seconds, all devices on that circuit go into
stand-alone mode. The circuit acts like a conventional alarm
receiving circuit. Each detector on the circuit continues to
collect and analyze information from its surroundings. The
ADT-HRSI detectors alarm if the ambient temperature
increases 57°C (135°F) or if the temperature increases at a
rate exceeding 9°C (15°F) per minute. If the detector is
mounted to a relay base, the relay operates.
Fast Stable Communication:
On-board intelligence means less information needs to be
sent between the detector and the loop controller. Other than
regular supervisory polling response, the detector only needs
to communicate with the loop controller when it has
something new to report. This provides very fast control
panel response time and allows a lower baud rate (speed) to
be used for communication on the circuit.
The lower baud rate offers several advantages including:
- Less sensitivity to circuit wire characteristics
- Less sensitivity to noise glitches on the cable
- Less emitted noise from the analog wiring
- Twisted or shielded wiring is not required.
Installation Spacing:
The ADT-HRSI detector is rated for installation at up to 70ft
(21.3m) spacing. These detectors may be installed in rooms
with an ambient temperature of up to 100°F (38°C).
Status LEDs:
Twin LEDs are visible from any direction. A flashing GREEN
LED shows normal system polling from the loop controller. A
flashing RED LED means the detector is in alarm state. Both
LEDs on steady shows alarm state - stand- alone mode.
Normal green LED activity is not distracting to building
occupants, but can be quickly spotted by a maintenance
technician.
Quality and Reliability:
Honeywell detectors are manufactured to strict international
ISO 9001 standards. All electronics utilize surface mount
technology (SMT) for smaller size and greater immunity to
RF noise. A conformal coating is used for humidity and
corrosion resistance. All critical contacts are gold plated.
Electronic Addressing:
The loop controller electronically addresses each detector,
saving valuable time during system commissioning. Setting
complicated switches or dials is not required. Each detector
has its own unique serial number stored in its "on-board
memory". The loop controller identifies each device on the
circuit and assigns a "soft" address to that device's serial
number. If desired, detectors can be addressed using the
SIGA-PRO Signature Program/ Service Tool.
Installation:
Signature series detectors mount to North American 1-gang
boxes, 3-1/2 in or 4 in octagonal boxes and to 4 in square
electrical boxes 1-1/2 in (38 mm) deep. They also mount to
European BESA and 1-gang boxes with 60.3 mm fixing
centers.
Honeywell recommends that this detector be installed
according to local fire alarm codes.
NOTE:
- This detector will not operate without electrical power. As
fires frequently cause power interruption, we suggest you
discuss further safeguards with your fire protection
specialist.
- This detector will NOT sense fires that start in areas where
heat cannot reach the detector. Heat from fires in walls,
roofs, or on the opposite side of closed doors may not
reach the detector to alarm it.
- The heat sensor in this device only provides a source of
information to supplement the information provided by the
ionization and photoelectric smoke sensors. The heat
sensor by itself does NOT provide life safety protection.
Under no circumstances should heat detectors be relied
upon as the sole means of fire protection.
Testing and Maintenance:
Each detector automatically identifies when it is defective and
the user friendly maintenance program shows the current
state of each detector and other pertinent messages. Single
detectors may be turned off temporarily, from the control
panel. Availability of maintenance features is dependent on
the fire alarm system used.
Scheduled maintenance should be planned to meet local
codes.