System Sensor Innovair Flex D2E User manual
Operating Temperature: –° to ° C
Storage Temperature: –° to ° C
Humidity: % to % Relative Humidity Noncondensing
Air Velocity: to m⁄sec
Rectangular Footprint Dimensions: cm L x cm W x cm D
Square Footprint Dimensions: cm L x cm W x cm D
Weight: kg
Electrical
Power supply voltage: VDC
Input capacitance: µF max
Reset Voltage: VDC min
Reset Time with RTS⁄RTS: to sec
Reset Time by power down: sec max
Power Up Time: sec max
Alarm response time: sec
Sensitivity Test: See detector label
Current Requirements Using No Accessories
Peak standby current µA
Average standby current µA
Max alarm current mA
SS IR
[] Limitations of Duct Smoke Detectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
[] General Description ......................................................
[] Contents of the Duct Smoke Detector Kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
[] Exploded View of Duct Smoke Detector Components . . . . . . . . . . . . . . . . . . . . .
[] Detector Installation ......................................................
[] Sampling Tube Installation ...............................................
[] Measurement Tests .......................................................
[] Field Wiring ..............................................................
[] Detector Status Indicator .................................................
[] Verification of Operator ..................................................
[] Dectector Cleaning Procedures ...........................................
[] Sensor Replacement .....................................................
[] Optional Accessories .....................................................
Wiring Diagrams ............................................................
Warranty ...............................................................
The DE model is a photoelectric detector approved for an extended air speed
range of m⁄s to m⁄s and an operational temperature range of −°C
to °C
Read the System Sensor Guide for Proper Use of Smoke Detectors in Duct Appli
cations A which provides detailed information on detector spacing
placement zoning wiring and special applications Copies of this manual are
available online at wwwsystemsensorcom Refer also to local standards and
codes of practice
NOTICE: This manual shall be left with the owner⁄user of this equipment
IMPORTANT: This detector must be tested and maintained regularly The de
tector should be cleaned at least once a year
WARNING
DUCT DETECTORS 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
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 in
structions in this manual Furthermore the detector MUST be operated within
ALL electrical and environmental specifications listed in this manual Failure
to comply with these requirements may prevent the detector from activating
when smoke is present in the air duct
Smoke introduced into the 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 DE Duct Smoke Detector utilizes photoelectric technology for the de
tection of smoke This detection method when combined with an efficient
housing design samples air passing through the duct allowing detection of a
developing hazardous condition When sufficient smoke is sensed an alarm
signal is initiated and appropriate 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
Uses E SDE ECOand P Detector Heads
Sampling tubes installed from front or rear
Compatible with existing accessories
Sensor⁄power board assembly and covers
Three #sheet metal screws for mounting
One test magnet
Drilling template
One sampling tube end cap
One plastic exhaust tube
NOTE: A 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 Ta
ble on page to determine the inlet tube required for different duct widths
IR
ACCESSORY CURRENT LOADS AT 24 VDC
DEVICE STANDBY ALARM
RA400Z/RA100Z 0mA 12mA Max.
Pittway Tecnologica Srl
Via Caboto ⁄ Trieste Italy
wwwsystemsensoreuropecom
Model DE detectors are designed to be used in air handling systems having
air velocities of to m⁄sec Duct widths from to cm can be
accommodated Be sure to check engineering specifications to ensure that the
air velocity in the duct falls within these parameters If necessary use a veloc
ity meter anemometer to check the air velocity in the duct
On ducts wider than cm it is recommended that the detector be mounted
downstream of a bend obstruction in the duct or the supply or return air
inlet
Exception: Installation of duct detectors can be on or within a commercial
packaged rooftop heating and airconditioning system fire⁄smoke dampers
and economizers They may be mounted in either the supply and⁄or return air
section as determined by local code
Once a suitable location is selected determine if the detector is to be mounted
in a sidebyside “rectangular” configuration or a topoverbottom “square”
configuration as shown in Figure If mounting in the square configuration
remove the rear attachment screw rotate the unit at hinge and replace the
screw into the new attachment hole as shown in Figure Do NOT remove
the hinge screw during this process Final installation approval shall be based
upon passing section and tests
REMOVE SCREW AND PIVOT
DETECTOR AS SHOWN BELOW.
REPLACE SCREW
TO SECURE DETECTOR
IN PLACE.
H
Remove the paper backing from the mounting template supplied Affix the tem
plate to the duct at the desired mounting location Make sure the template lies
flat and smooth on the duct
Center punch at target centers: “A” for sampling tubes and “B” for
the rectangular configuration mounting tabs as shown on mounting template
Drill pilot holes at target “A” centers and cut two cm diameter holes using
a cm hole saw or punch Drill mm diameter holes using a mm drill at
target “B” centers
Center punch at target centers: “A” for sampling tubes and “C”
for the square configuration mounting tabs as shown on mounting template
Drill pilot holes at target “A” centers and cut two cm diameter holes using
a cm hole saw or punch Drill mm diameter holes using a mm drill at
target “C” centers If desired drill an additional mm hole at the location of
one of the mounting tabs on the lower housing
Use two rectangular configuration or three square configuration of the pro
vided sheet metal screws to screw the duct detector to the duct
CAUTION: Do not overtighten the screws
SS IR
MAGNET TEST LOCATION
SENSOR MODULE COVER
TERMINAL HOUSING
MODULE COVER
SAMPLING TUBE EXHAUST TUBE
SENSOR HEAD
WIRING TERMINALS
(sold seperately)
H
For tubes longer than the width of the air duct the tube should extend
out of the opposite side of the duct Drill a cm hole in the duct op
posite the hole already cut for the sampling tube Ensure that the sam
pling tube is angled downward from the duct smoke detector to allow
for moisture drainage away from the detector The sampling tube should
be angled at least cm downward for every cm of duct width
per Figure There should be to holes spaced as evenly as pos
sible across the width of the duct If there are more than holes in the
section of the tube extending out of the duct select a shorter tube using
Table Otherwise trim the tube to leave approximately cm
extending outside the duct Plug the end with the end cap and tape
closed any holes in the protruding section of the tube Be sure to seal the
duct where the tube protrudes
DETECT O R
1.9 cm
HOLE
30.5 cm
.63 cm
.5 cm
H
NOTE: Air currents inside the duct may cause excessive vibration especially
when the longer sampling tubes are used In these cases a cm floor flange
available at most plumbing supply stores may be used to fasten the sam
pling tube to the other side of the duct When using the flange⁄connector
mounting technique drill a to cm hole where the flange will be used
There may be applications where duct widths are not what is specified for the
installation In such cases it is permissible to modify a sampling tube that is
longer than necessary to span the duct width
Use a mm drill and add the appropriate number of holes so that the total
number of holes exposed to the air flow in the duct is to Space the ad
ditional holes as evenly as possible over the length of the tube
NOTE: This procedure should only be used as a temporary fix It is not in
tended as a permanent substitute for ordering the correct length tubes
The detector arrangement can also incorporate the remote mounting of the
sampling tube and⁄or exhaust tube In this case both the detector sampling
tube and exhaust tube if included should be rigidly mounted to withstand
the pressure and vibrations caused by the air velocity The location of the
detector’s sampling tube should be such that there is uniform airflow in the
cross section area
The pressure differential across the sampling and exhaust ports in the detec
tor housing shall be verified to be between and mm of water Do so
by measuring the pressure difference between the inlet and outlet ports on
the detector housing using a manometer as described in Section of this
manual
The DE is designed to operate over an extended air speed range of to
m⁄sec To verify sufficient sampling of ducted air turn the air handler on and
use a manometer to measure the differential pressure between the two sam
pling tubes The differential pressure should measure at least mm of water
and no more than mm of water Because most commercially available
manometers cannot accurately measure very low pressure differentials ap
plications with less than m⁄sec of duct air speed may require one of the
following: the use of a currentsourcing pressure transmitter per Section
; or the use of aerosol smoke per section
The sampling tube must be purchased separately Order the correct length
as specified in Table for width of the duct where it will be installed It is
recommended that the sampling tube length extend at least ⁄ across the duct
width for optimal performance
Outside Duct Width Sampling Tube
Recommended*
Up to cm DST
tocm DST
to cm DST
to cm DST
to cm DSTpiece
*Must extend a minimum of ⁄ the duct width
The sampling tube is always installed with the air inlet holes facing into the
air flow To assist proper installation the tube’s connector is marked with an
arrow Make sure the sampling tube is mounted so that the arrow points into
the airflow as shown in Figure Mounting the detector housing in a vertical
orientation is acceptable provided that the air flows directly into the sampling
tube holes as indicated in Figure The sampling tube and exhaust tube
can be mounted in either housing connection as long as the exhaust tube is
mounted downstream from the sampling tube
SAMPLING TUBE ENDCAP
ARROW MUST FACE
INTO AIR FLOW
AIR FLOW
DIRECTION
H
CAUTION: The sampling tube end cap included with the detector is criti
cal to proper operation of the duct smoke detector The end cap is needed to
create the proper air flow to the sensor of the duct smoke detector Once any
sampling tube length adjustments are made plug the end of the sampling tube
with the provided end cap
A plastic exhaust tube is included with the unit to be installed if needed In
stall into the housing connection that is downstream from the sampling tube
connection The exhaust tube can be installed from the front of the detector
or the back A longer cm exhaust tube model ETX is available as an ac
cessory in cases where the molded exhaust tube does not extend at least cm
into the duct
For tubes shorter than the width of the duct slide the sampling tube
with installed end cap into the housing connection that meets the air
flow first Position the tube so that the arrow points into the airflow as
shown in Figure Sampling tubes over cm long should be sup
ported at the end opposite of the duct detector In ducts wider than
cm work must be performed inside the duct to couple the other sec
tion of the sampling tube to the section already installed using the cm
conduit fitting supplied Make sure that the holes on both sections of the
air inlet sampling tube are lined up and facing into the airflow
SS-300-020 3 I56-3536-003R
(+) IN (+) OUT
(+)
(+)
(–)
(–)
1ST D ETEC TO R
(–)
RA400Z (OPTIONAL)
REMOTE ALARM LED
(+) IN (+) O UT
(+)
(+)
(–)
LAST D ETEC TO R
(–)
RA4 00Z (O PTIO N A L)
REMOTE ALAR M LED
E
O
L
R
COMP ATIBLE 2-W IR E
CONT ROL PAN EL
INITIATIN G
ZO N E
INITIATIN G
ZO N E
(+)
(–)
EO L R ESISTO R
SPEC IFIED
BY PAN EL
MAN U FAC TU R E R
R A
R A
R A
R A
(–)
~
~
~
~
(+) IN (+) OU T
(+)
(+)
(–)
(–)
2N D D ETEC TO R
(–)
RA4 00Z (O PTIO N A L)
REMOTE ALAR M LED
R A
R A
~
~
~
~
Verify the air speed of the duct using an anemometer Air speed must be
at least m⁄sec Wire the transmitter as shown in Figure Connect the
leads of the meter to either side of the resistor Allow unit to warm up
for seconds With both HIGH and LOW pressure ports open to ambient
air measure and record the voltage drop across the resistor measure
ment volts is typical Using flexible tubing and rubber stoppers con
nect the HIGH side of the transmitter to the sampling tube of the duct smoke
detector housing and the LOW side of the transmitter to the exhaust tube
of the duct smoke detector housing Measure and record the voltage drop
across the resistor measurement Subtract the voltage recorded in
measurement from the voltage recorded in measurement If the difference
is greater than volts there is enough air flow through the duct smoke
detector for proper operation
HIGH LO W
9 VO LT
BATTERY
9 VO LT
BATTERY
9 VO LT
BATTERY
TO S AM PLIN G TU BE
TO E XH AU ST TU BE
DIFFERENTIAL
PRESSURE
TRANSMITTER
15 TO 36
VD C SU PPLY
1000 O H M 5%
1 W ATT R ES ISTO R
VOL T M E TER
+ –
All wiring must be installed in compliance with local wiring regulations and
codes of practice Proper wire gauges should be used The conductors used to
connect smoke detectors to control panels and accessory devices should be
colorcoded to prevent wiring mistakes Improper connections can prevent a
system from responding properly in the event of a fire
For signal wiring the wiring between interconnected detectors or from detec
tors to auxiliary devices it is recommended that single conductor wire be no
smaller than gauge The duct smoke detector terminals accommodate wire
sizes up to gauge
Smoke detectors and alarm system control panels have specifications for al
lowable loop resistance Consult the control panel manufacturer’s specifica
tions for the total loop resistance allowed for the particular model control
panel being used before wiring the detector loop
The DE detectors are designed for easy wiring The housing provides a ter
minal strip with clamping plates Wiring connections are made by sliding the
bare end of the wire under the plate and tightening the clamping plate screw
See Figure A for negative supply – supervision or Figure B for positive
suupply + supervision
Detector status is indicated by the LED’s on the sensor Refer to relevant de
tector installation manual for more details
SS IR
R
L
E
O
PANEL MANUFACTURER
SPECIFIED BY
EOL RESISTOR
COMPATIBLE 2-WIRE
CONTROL PANEL
INITIATING
ZONE
1ST DETECTOR
RA100Z (OPTIONAL)
REMOTE ALARM LED
INITIATING
ZONE
RA100Z (OPTIONAL)
REMOTE ALARM LED
2ND DETECTOR
RA100Z (OPTIONAL)
REMOTE ALARM LED
LAST DETECTOR
(–)
(+)
(+)
(+)RA
(+)
(–)IN (–)OUT
(–)
(–)OUT(–)IN
(+)RA
(+)
(–)OUT(–)IN
(+)RA
(+)
CAUTION
Do not loop wire under terminals when wiring detectors Break wire runs to provide system supervision of connections
H
H
H
Apply VDC or VDC to terminals marked as + and –IN see Figure
and electrical specs for details
VERIFY STANDBY per Section on page The use of a remote accessory is
recommended
Removal of the cover on the sensor side of the housing will result in a trouble
condition The unit with cover removed will remain powered while any units
between this unit and the eol resistor will loose power
Test and maintain duct smoke detectors in accordance with local regulations
and codes of practice The tests contained in this manual were devised to as
sist maintenance personnel in verification of proper detector operation
Before conducting these tests notify the proper authorities that the smoke
detection system will be temporarily out of service Disable the zone or system
under test to prevent unwanted alarms
This test is intended for lowflow systems < m⁄sec If the air speed is
greater than m⁄sec use a conventional manometer to measure differen
tial pressure between the sampling tubes as described in
Drill a cm hole cm upstream from the duct smoke detector With the
air handler on measure the air velocity with an anemometer Air speed must
be at least m⁄sec Spray aerosol smoke into the duct through the cm
hole for five seconds Wait two minutes for the duct smoke detector to alarm
If the duct smoke detector alarms air is flowing through the detector Remove
the duct smoke detector cover and blow out the residual aerosol smoke from
the chamber and reset the duct smoke detector Use duct tape to seal the aero
sol smoke entry hole
CAUTION
Canned aerosol simulated smoke canned smoke agent formulas will vary
by manufacturer Misuse or overuse to these products may have long term
adverse effects on the smoke detector Consult the canned smoke agent man
ufacturer’s published instructions for any further warnings or caution state
ments
Install the covers making sure that the cover fits into the base groove Tighten
the seven screws that are captured in the covers
NOTE: Verify sensor cover gasket is properly seated on cover prior to cover
installation
Notify the proper authorities that the smoke detector system is undergoing
maintenance and that the system will temporarily be out of service Disable
the zone or system undergoing maintenance to prevent unwanted alarms and
possible dispatch of the fire department
Remove the sensor to be cleaned from the system
Refer to the relevant detector installation manual for cleaning instructions
Reinstall the detector
Reinstall the detector in its housing
Restore system power
Perform Detector Check Section []
Notify the proper authorities testing has been completed and the smoke
detector system is back in operation
Remove the sensor head by rotating counterclockwise
Pull gently to remove it
To replace the sensor head align the mounting features and rotate clock
wise into place
The DE duct smoke detector can be used with the RAZ or RAZ
R A (+)
(–)IN
(+)
(–)
R ED
RA400Z/RA100Z
(OPTIONAL)
REMOTE (LED)
ANNUNCIA TO R
D2E
DUCT D ETEC TO R
H
SS IR
HO
SS IR
©System Sensor
System Sensor warrants its enclosed product to be free from defects in materials and
workmanship under normal use and service for a period of three years from date of
manufacture System Sensor makes no other express warranty for the enclosed product
No agent representative dealer or employee of the Company has the authority to in
crease or alter the obligations or limitations of this Warranty The Company’s obligation
of this Warranty shall be limited to the replacement of any part of the product which is
found to be defective in materials or workmanship under normal use and service during
the three year period commencing with the date of manufacture After obtaining a Return
Authorization number send defective units to: Returns Department RA #__________
Pittway Tecnologica Srl Via Caboto ⁄ Trieste Italy
Please include a note describing the malfunction and suspected cause of failure The
Company shall not be obligated to replace units which are found to be defective because
of damage unreasonable use modifications or alterations occurring after the date of
manufacture In no case shall the Company be liable for any consequential or incidental
damages for breach of this or any other Warranty expressed or implied whatsoever even
if the loss or damage is caused by the Company’s negligence or fault Some states do not
allow the exclusion or limitation of incidental or consequential damages so the above
limitation or exclusion may not apply to you This Warranty gives you specific legal
rights and you may also have other rights which vary from state to state
Please refer to insert for the Limitations of Fire Alarm Systems
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