System Sensor PERTRONIC DNRW Installation And Maintenance Instructions Manual

INSTALLATION AND MAINTENANCE INSTRUCTIONS
For Australia and New Zealand
DNRW
Duct Smoke Detector
SPECIFICATIONS
Operating Temperature:
Storage Temperature:
Environmental Rating:
Humidity:
Air Velocity:
Rectangular Footprint Dimensions:
Square Footprint Dimensions:
Weight:
Electrical (See applicable detector head installation manual for electrical specifications. To determine applicable sensor head, use the Base/Sensor Cross Reference
chart at www.systemsensor.com (available on the Tools menu).

TABLE OF CONTENTS

[1] Limitations of Duct Smoke Detectors ................................................ 1
[2] General Description ......................................................................... 1
[3] Contents Of The Duct Smoke Detector Kit ........................................ 1
[5] Sampling Tube Installation ............................................................... 2
[6] Measurement Tests .......................................................................... 3
[7] Field Wiring; Installation Guidelines ................................................. 4
[8] Verification of Operation .................................................................. 4
[9] Cleaning ......................................................................................... 5
[10] Sensor Replacement ....................................................................... 5
[11] Optional Accessories ..................................................................... 5
Three-Year Limited Warranty ................................................................. 6
BEFORE INSTALLING
Read System Sensor's Applications Guide for Duct Smoke Detectors (HVAG53),
which provides detailed information on detector spacing, placement,
zoning, wiring, and special applications. This manual is available online at
www.systemsensor.com. NFPA Standards 72 and 90A should also be refer-
enced for detailed information.
NOTICE: This manual shall be left with the owner/user of this equipment.
IMPORTANT: The detector must be tested and maintained regularly following
NFPA 72 requirements. According to NFPA, the detector should be visually
inspected semiannually and functionally tested at least once a year. This may
need to be more frequent depending on the air quality of the duct supply air.

[1] LIMITATIONS OF DUCT SMOKE DETECTORS

The National Fire Protection Association has established that DUCT DETEC-
TORS MUST NOT BE USED AS A SUBSTITUTE FOR OPEN AREA DETECTOR
PROTECTION as a means of providing life safety. Nor are they a substitute for
early warning in a building's regular fire detection system.
System Sensor supports this position and strongly recommends that the user
read NFPA Standards 90A, 72, and 101. The DNRW Air Duct Smoke Detectors
are listed per UL 268A.
This device will not operate without electrical power. Fire situations may
cause an interruption of power. The system safeguards should be discussed
with your local fire protection specialist.
This device will not sense smoke unless the ventilation system is operating
and the cover is installed.
For this detector to function properly, it MUST be installed according to the
instructions in this manual. Furthermore, the detector MUST be operated within
ALL electrical and environmental specifications listed in this manual and the
sensor head installation manual. Failure to comply with these requirements
may prevent the detector from activating when smoke is present in the air duct.
Amended by Pertronic Industries, 21 September 2020 (DST1 not available in Australia and New Zealand)
-4° to 158° F (-20° to 70° C);
32° F to 120° F (0° C to 49° C) with module installed in the DNRW
-22° to 158° F (-30° to 70° C)
NEMA 4* Type 4 Enclosure - Watertight
0% to 93% Relative Humidity Non-condensing
100 to 4000 ft./min. (0.5 to 20.3 m/sec.)
14.38 in L x 5 in W x 2.5 in D (37 cm L x 12.7 cm W x 6.36 cm D)
7.75 in L x 9 in W x 2.5 in D (19.7 cm L x 22.9 cm W x 6.35 cm D)
1.6 pounds; 0.73 kg
WARNING
PAGE
ACCESSORY CURRENT LOADS AT 24 VDC
DEVICE
RA100Z
RTS151
RTS151KEY

[2] GENERAL DESCRIPTION

Smoke introduced into this air duct system will be distributed throughout the
entire building. Smoke detectors designed for use in air duct systems are used
to sense the presence of smoke in the duct.
Model DNRW Air Duct Smoke Detector uses photoelectric technology for the
detection of smoke. This detection method, when combined with an efficient
housing design, samples air passing through the duct and allows detection of
a developing hazardous condition. When sufficient smoke is sensed, an alarm
signal is initiated at the fire control panel monitoring the detector, and appro-
priate action can be taken to shut off fans, blowers, change over air handling
systems, etc. These actions can facilitate the management of toxic smoke and
fire gases throughout the areas served by the duct system.
The DNRW incorporates a sensor cover tamper feature that provides a trou-
ble signal at the panel immediately if the cover is removed or improperly in-
stalled. Proper installation of the sensor cover removes the trouble condition.
When programmed with the system control panel, two LEDs on each duct
smoke detector light to provide local visible indication.
The DNRW provides a remote alarm output for use with auxiliary devices, such
as the RA100Z remote LED annunciator, as well as remote test capability with
the RTS151 or RTS151KEY Remote Test Stations.
[2.1] DETECTOR FEATURE SET
- Uses plug-in head UL-listed as compatible with the system control panel
- Sampling tubes install from front and rear
- Compatible with existing accessories
- Able to address detector per code switches on sensor head

[3] CONTENTS OF THE DUCT SMOKE DETECTOR KIT

1. Sensor/power side and covers (use appropriate sensor per the system
control panel)
2. Three #10 sheet metal screws for mounting
3. Drilling template
4. One sampling tube end cap
5. One plastic exhaust tube
NOTE: A DST sampling tube must be ordered to complete the installation. It
must be the correct length for the width of the duct where it will be installed.
See Table 1 on page 2 to determine the inlet tube required for different duct
widths.
1
3825 Ohio Avenue, St. Charles, Illinois 60174
800/736-7672, FAX: 630/377-6495
www.systemsensor.com
STANDBY ALARM
0mA 12mA Max.
0mA 12mA Max.
12mA 12mA Max.
I56-3371-011
21/09/2020