Duct Smoke Sensor KRM
Duct Smoke Sensor KRM®
• VdS certification (G210059)
• Patented single tube air sampling system
• Contamination display in %
and signalling at 100 %
• Electronic air flow control
• Externally operable reset button in the
housing
• Remote reset option via terminals
• Long service life, low contamination
Technical Data
Sensor:
Scattering RM 3.3 (ALK-E)
Supply voltage KRM-1:
230 V AC ± 10 %, 50/60 Hz
Supply voltage KRM-2/KRM-2-MOD:
24 V AC/DC +15 % / -10 %
Rated current:
KRM-1: 30 mA
KRM-2/KRM-2-MOD: 120 mA
Relay outputs:
floating
Alarm relay locked:
1 changeover contact, 8 A,
250 V AC or 24 V DC
1 NC, 8 A, 250 V AC or 24 V DC
Contamination relay:
1 NC contact, 6 A, 250 V AC or 24 V DC
Operating temperature: -15 °C – +50 °C
Permissible humidity: 10 – 95 % non-condensing
Protection class:
IP 54, IP 65 with WDG
(water resistant housing)
Approvals:
Sensing chamber and
air duct frames:
VdS approval G210059
Tested:
according to FprEN54-27
LED display:
% contamination level flashes
at > 70 %
LED in housing:
green operating
blue
lack of air flow
yellow failure, electronics,
smoke detector defective,
low voltage
red
smoke alarm, including
contamination > 99 %,
flashes at attempts to release
when the sensing chamber is
not empty
Adaptergehäuse:
ABS
Air measuring tube:
Aluminium / plastic
shortest length 160 mm
standard length 600 mm
Dimensions:
257 x 166 x 77 mm (L x W x H)
Screw connection:
3 x M16
Accessories
Mounting bracket:
Housing:
KS (for insulated / circular ducts)
KS-WDG (for insulated / circular ducts in
combination with WDG)
WDG – waterresistant housing for
outdoor installation and increasing
protection class to IP 65
Function
The KRM duct smoke detector is designed for smoke detection in
ventilation ducts. It constitutes a combination of a smoke detector with an adapter system, whose measuring tube and housing
have been specially adapted for optimal air flow through the
smoke detector.
The multi-chamber measuring tube in the air duct transports the
air within the air duct along the entire length of the tube, through
the sensing chamber and back into the air duct. Upon detection
of smoke, the sensor reacts immediately and triggers an alarm.
Over time, the sensor becomes contaminated. Because of alarm
threshold tracking, the sensitivity up to total pollution remains
the same. From 70 % contamination upwards, the sensor is triggered and indicates this by flashing. If the sensor is not replaced
the smoke alarm is triggered at 99 % contamination.
The contamination level is indicated in a two-line LED display; at
> 70 % it flashes.
To verify operability, the device is equipped with electronic air
flow monitoring, which lights a blue LED at < 1 m/s. The failure
LED illuminates when the smoke sensor or the electronics are
defective, in the absence of a smoke sensor, and with shortcircuits or cable breakage.
The smoke alarm must be released with the reset button.
A functionality test is also possible with the same button.
The operation functions like a smoke alarm.
Furthermore, the same function takes place on restart or when
the bridge circuit between terminals 9 and 10 is opened (remote
release).
Fire Protection | Data sheet No. 41300 | Version 01-2012 | 1 | 9
Duct Smoke Sensor KRM
8
14
7
1
2
3
4
10
11
6
5
1
4
14
11
12
9
13
10
5
6
7
8
9
10
11
12
13
14
15
13
12
9
2
3
Electrical connection
Power supply 230 V AC
Test/Reset
(NC contact)
1
2
3
4
Power supply
230 V AC
9
10
11
12
13
14
15
16
17
green
Adapter plate with gasket
Patented measuring tube (max. length 3 m)
End cap
Rubber bushing
(only for insulated or circular ducts)
Lower housing with seal
Electronics
Optical smoke sensor
Upper casing with seal
Red LED: alarm / reset button
Yellow LED: interference
LED display: % of sensor contamination
LED green: in operation
LED blue: air flow under 1 m / s
Opening for test gas
Air duct
Power supply 24 V AC/DC
Test/Reset
(NC contact)
Test/Reset
Smoke alarm
red
Smoke alarm
Service signal
Contamination
1
2
3
4
Power supply
230 V AC
9
10
11
12
13
14
15
16
17
Test/Reset
Smoke alarm
red
Smoke alarm
Service signal
Contamination
yellow
yellow
blue
blue
KRM-1, 230 V
Power supply 24 V AC/DC
Test/Reset
(NC contact)
KRM-2-MOD, 24 V
KRM-2, 24 V
KRM-1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
Power supply
24 V AC/DC
green
Bus B
Bus B
Bus A
Bus A
green
KRM-2
Programming the Bus address for the KRM-2-Mod:
Press buttons T3+T4 on the circuit board (to the right, next to the
display) at the same time, so that the display changes from contamination level to show the bus address (the display will flash).
Press button T3 or T4 to adjust the desired address (1 – 99). The
last set bus address is automatically saved. The display resets automatically after 3 seconds or by simultaneously pressing T3+T4.
Test/Reset
Smoke alarm
red
Smoke alarm
Service signal
Contamination
yellow
Contact depictions are with the power off (alarm)
blue
KRM-2-MOD
Remote reset/test (terminal 9 +10): if bridge circuit is removed, a fl oating NC contact must be connected.
Notes: The fl oating switching contacts (terminals 11 – 17) are uniformly assigned to an installation category according to EN 60730-1.
These switching contacts are only to be used for 230 V AC or 24 V AC/DC, a combination is not permitted. A mixed connection of safety extra-low voltage (SELV) and low voltage must not occur. The assembly may only be operated on one mains phase. The voltage / safeguard activation is to be provided on site. KRM-1-xx (230 V versions) with a fuse of 16 A; KRM-2-xx (24 V version) with 4 A.
2 | 9 | Fire Protection | Data sheet No. 41300 | Version 01-2012 Duct Smoke Sensor KRM
Display and operation for Duct Smoke Sensor KRM
LED Smoke alarm (red)
LED Smoke alarm (red)
Display indicator (contamination in % or status)
LED Failure (yellow)
LED Power supply
(green)
LED Air fl ow (blue)
lights up when there is insuffi
cient fl ow
LED Alarm (red) and
Alarm / reset button
Failure reset:
Briefl y press button and release
Alarm reset:
Press button for at least 2 seconds until the red LED goes out
Display
Meaning
Start / calibration
Contamination
in %
Comments
Shortly after starting the software version is displayed (4 digits),
e.g. 00 then 17 = Software 0017.
Thereafter, the rotating segment display follows at startup or after a power failure.
Flashes starting at 70 %; at 99 % with display LED alarm.
00 – 99
+
all LEDs on the
circuit board
light up
00 – 99
flashing
Failure
e.g. Missing smoke detector, disrupted communication with the smoke detector,
processor failure.
Failure LED & alarm LED light up at the same time (not on the DIBt version).
Troubleshooting: Change the detector and confirm by pressing the alarm / reset button.
Confirmation
reset / new start
If alarm / reset button is pressed for more than 8 seconds, or if bridge circuit / terminal
9 / 10 is open (missing bridge circuit or remote reset). Display goes out after releasing the
alarm / reset button or closing the bridge circuit between terminal 9 + 10.
BUS adresse
Display only with MOD versions after pressing the address buttons T3 / T4 directly on the
circuit board.
Fire Protection | Data sheet No. 41300 | Version 01-2012 | 3 | 9
Duct Smoke Sensor KRM
LEDs
Meaning
Comments
Reset after failure:
Briefly press alarm / reset button. KRM immediately restarts.
Smoke alarm or
failure (not on
the DIBt version)
Alarm / reset
(red)
Defective circuit
board or missing Check / replace circuit board or smoke detector RM 3.3 (ALK-E)
smoke alarm
Failure
(yellow)
Smoke alarm
(2 x red)
Reset after alarm:
Press and hold the alarm / reset button for at least 2 seconds until the red alarm LED in the
button goes out. Do not release it until then. KRM will start again only after release. As long as
the alarm / reset LED flashes when the button is pressed, the smoke sensor is still filled with test
gas / test spray / smoke, and can not be reset. In that case blow the sensor out or wait.
Smoke alarm
Red LEDs directly on the smoke detector RM 3.3 (ALK-E). Red LEDs directly
or contamination
on the smoke detector RM 3.3 (ALK-E). LEDs permanently on until reset has taken place.
99 %
Power
(green)
Supply voltage
is on
Green LED lights up if supply voltage is on
Air flow
(blue)
Air flow is too
low
Blue LED lights up when air flow is too low and air relay (only equipped on DIBt versions) drops
out. Check smoke detector position in the duct, check sampling tube (TurboTube) for contamination / clean if necessary.
Behavior of the alarm relay and fault relay and displays, plus reset options
Smoke alarm
Device failure / missing detector…
DIBt versions
KRM-1-DZ / KRM-2-DZ
KRM-1 / KRM-2
KRM-2-MOD
DIBt versions
KRM-1-DZ / KRM-2-DZ
KRM-1 / KRM-2
KRM-2-MOD
Alarm relay
11 / 12 / 13
Drops out
Drops out
Does not drop out
Drops out
Relais Alarm
14 / 15
Drops out
Drops out
Does not drop out
Drops out
LED
Alarm / Reset
Lights up
Lights up
Does not light up
Lights up
Relay failure
18 / 19
Does not drop out
--------Not equipped
Drops out
--------Not equipped
LED failure
Does not light up
Does not light up
Lights up
Lights up
With power interruption,
alarm button or with
terminal 9 / 10 provided
that sensing chamber
is free.
Not with power
interruption!
It is mandatory to use
the alarm button or terminal 9 / 10 provided that
sensing chamber is free +
disturbance has ceased.
With power interruption,
alarm button or with
terminal 9 / 10 provided
that sensing chamber
is free + disturbance has
ceased.
Alarm reset or
failure reset
Not with power
interruption!
It is mandatory to use
the alarm button or terminal 9 / 10 provided that
sensing chamber is free.
Installation Instructions and Positioning
The KRM is to be positioned in accordance with the current
local state regulations on ventilation systems. Reliable smoke
detection must be guaranteed. Depending on the cross section
of the ventilation duct the air collecting tube may be cut to a
length of 160 mm. This minimum length of 160 mm must not
be undercut. This way, up to <100 mm Ø can be monitored in
conjunction with the KS mounting bracket. With respect to the
4 | 9 | Fire Protection | Data sheet No. 41300 | Version 01-2012
maximum width/ maximum height/ maximum diameter of
the air ventilation ducts to be monitored with the 600mm long
standard air collecting tube, there are no limitations according to
the VdS approval / DIBT certification. The airflow direction must
be observed during the installation of the air collecting adapter.
The air collecting tube may be mounted laterally below or above
the air duct – the location is arbitrary.
Duct Smoke Sensor KRM
In the ideal case, install the KRM when structurally possible,
where flow meters, etc. are normally attached, so there is a laminar airflow along the measuring tube. We recommend that the
KRM be fitted and installed at the same distance from heating,
cooling and humidity devices as flow sensors. The distance of
the KRM to fittings, valves, filters, etc. in terms of flow direction should be 3 times, and in the diagonal direction 5 times
that of the cross-section, if this structurally possible. The KRM
including the air collecting tube may not be installed along the
longitudinal edges of ventilation ducts (corner area). The KRM
is to be installed so that the air collecting tube is constantly in
the air stream. In horizontal ventilation ducts the KRM including
air collecting tube should be installed in the upper third of the
ventilation ducts or at the top of the ventilation ducts, if this is
structurally possible.
Follow these instructions. All work (such as installation, electrical connection, start-up, operation and maintenance), must
be carried out by sufficiently qualified craftsman. Current local
rules and regulations (e.g. building regulations, elecrical/VDE
guidelines, etc.) are to be observed. Installers and operators are
required to be adequately informed before operation. Read the
product description before device start-up. Make sure that the
product is fully suited to the respective applications. We assume
no liability for misprints and changes after printing. Compliance
with operating and installation instructions is also included
within the regulations of intended use. We assume no liability
for damages caused by improper use. Operating licenses and
guarantees and all warranty claims will be voided in the event
of unauthorized modifications or any tampering with the
device.
When, for structural reasons, the recommended positioning is
not possible, the KRM is to be mounted so that, nonetheless, a
reliable smoke detection/flow is ensured. The blue LED “Airflow”
may be used as an indicator of a sufficient flow (the LED is off
with sufficient flow).
Example of positioning
after the change of
air duct direction. (Recommendation)
5 dh
Example of positioning
after air outlets (Recommendation)
Air outlet
5 dh
3 dh
Hydraulic diameter dh
Rechtangular duct
Round duct
d h=D
d h=
øD
Where there are large temperature differences,
outdoors for example, or in places that are
dependent on outside temperature (roof, attic),
the air duct smoke sensor has to be insulated.
For this Oppermann Regelgeräte provides
a special splash-proof housing (WDG).
H
2xHxB
H+B
B
Example of positioning (Recommendation)
MIN 3xd h
MIN 5xd h
KRM
MIN 3xd h
KRM
MIN 5xd h
KRM
KRM
Ventilator
MIN 3xd h
MIN 5xd h
KRM
Airflap
KRM
MIN 3xd h MIN 5xd h
KRM
KRM
Battery
Muffler
MIN 5xd h
Change in air
duct direction
MIN 3xd h
MIN 3xd h
KRM
MIN 3xd h
KRM
KRM
MIN 3xd h
MIN 5xd h
MIN 5xd h
Air duct forking
KRM
KRM
KRM
MIN 5xd h
KRM
Air duct narrowing/
Air duct enlargement
KRM
MIN 5xd h
Exhaust air
Supply air
Air duct device
Fire Protection | Data sheet No. 41300 | Version 01-2012 | 5 | 9
Duct Smoke Sensor KRM
Installation
min. 160 mm
1.
Drill a hole 43 – 44 mm in diameter at the intended mounting
location.
Note: Installation of the TurboTube measuring tube is possible either from the top, bottom or side of the channel for all duct cross-sections (for round ducts as well).
Attention: Operation without end plug not permitted.
2.
• Determine how long the measuring tube must be.
• If necessary, shorten the tube. Minimum length 160 mm.
• Deburr the cutting face and put the end plug back on up to the
stop collar.
Note: depending on delivery batch, either the transparent end caps displayed here or black end caps with a slightly diff erent geometry will be included in the delivery.
3.
• Determine the direction of flow and fit the adapter plate so that
•
the line on the adapter plate under the text ”Strömungsrichtung”
is parallel to the flow direction.
Four self-tapping screws serve for attaching it to the sheet metal
duct (not included in delivery).
Mounting bracket
4. Installation on a rectangular air duct
• see picture at right
5. Installation on a circular air duct
• For mounting on a circular air duct use mounting bracket type KS
and the rubber bushing . Thanks to the bend
perforations they can be adapted to a round duct.
The type KS mounting bracket is supplied fl at.
6. Installation on air ducts with insulation
• Use the rubber bushing and insert it into the Ø 43 – 44 mm
opening in the air duct.
• Install the mounting bracket.
• Insert the assembled adapter plate into the measuring tube by
sliding the measuring tube through the grommet, and screw the
adapter plate onto the mounting bracket using the 4 self-tapping
screws. Then the insulation can be installed.
7. Installation outdoors or in a cold environment
• As protection for smoke detectors which are exposed to the open
air or in a cold environment there is a special WDG type splashproof housing. This enclosure prevents the warm air in the smoke
detector duct from condensing. The interior of the housing is
insulated with foam rubber.
6 | 9 | Fire Protection | Data sheet No. 41300 | Version 01-2012 Rubber bushing
inner
Mounting bracket
outer
Insulation
Duct Smoke Sensor KRM
8. Installing the housing with the sensor
• Attach the housing bottom part with the electronics and sensor to
•
•
•
•
•
the adapter plate. The housing can be attached at increments of
90°. The direction of the housing has no effect on the measurement
result. You can align the housing with the sensor optimally.
Check that the seals in the housing upper part are correctly
positioned.
By snapping on and tightening the upper housing and then firmly
pressing down on the arrow marked on the central cable area (to
ensure that the catch at the lower end of the housing snaps in correctly), the mounting is complete.
Wire the unit according to the applicable circuit diagram.
Attention: wiring and electrical connections may only be carried
out by a qualified electrician.
The cable jacket for field wire connecting must be done as near as
possible to the terminal block. For wire without jacket longer as
10 mm the wire must be fix by a cable clip near the terminal block.
The potential-free switching contacts are to be uniformly classified
in one installation category according to EN 60730-1. The switch
contacts are only to be used for 230 V AC or 24 V AC/DC; no combination thereof is permitted. There must not be a mixed connection
of safety extra-low voltage (SELV) and low voltage. The component
may only be operated on one mains phase.
Application example:
9. Testing the duct smoke sensor
• After completing the installation work, doing proper wiring
•
•
•
(please note the separate data sheets / circuit diagrams) and
applying power, the duct smoke sensor is operational.
The green LED (12) illuminates.
By pressing the alarm / reset button (9), an initial simple functional test can be made. All LEDs must light up and all the relays
drop out. The units connected to the relays are activated! The
display (11) indicates the current degree of sensor contamination.
If the button is released, all LEDs will go out except for LED (12)
which shows the supply voltage, and the relays activate.
For testing the smoke sensor the housing must not be opened. It
has a self-closing test opening (14) in the center of the transparent cover. Use Oppermann test gas spray. Insert the test spray‘s
tube fully into the test opening (appx. 1.5mm deep) and release
as much test gas as needed until the smoke sensor activates.
Please do not spray too much, otherwise the smoke sensor may
display a higher degree of contamination at the next start / reset.
The alarm / reset button lights up, the relays drop out. The electronics are on alert and locked. To release, the alarm / reset button
must be pressed. At the time of the reset, the sensor must be
free of smoke and test gas. Should there still be test gas in the
chamber a higher degree of contamination will appear. In this
case, after some time perform a reset by disconnecting from the
power or by an external reset, or if necessary, remove the housing
cover and blow out the smoke detector.
10. Final review
• Are all screws tight?
• Is the adapter plate properly mounted for the
flow direction?
• Are all seals in the correct position?
• In operation, when air flow > 1 m / s the blue
LED may not light up.
Fire Protection | Data sheet No. 41300 | Version 01-2012 | 7 | 9
Duct Smoke Sensor KRM
Maintenance and repair
1. Instructions for operation and
maintenance
The operator is responsible for the safe function of the ventilation system. He has to ensure that the smoke sensors are always
ready for operation and that they are maintained, including all
controlling components and systems. In order to ensure good
performance over a longer period of time the smoke alarms
must be tested at least once a year. Without maintenance,
and depending on environmental conditions, the sensor will
become dirty sooner or later, and after a certain time will trigger
an alarm, which is a false alarm.
All types will give a specific maintenance requirement
signal at a contamination level of 70 % (display flashes).
Targeted maintenance can be carried out since the smoke
detector is equipped with a 2-digit digital contamination
indicator. From a 70 % contamination level or higher the smoke
sensor must be changed. There is a contact available for this
“contamination” signal, and it should be connected to the
automation station.
Caution:
Before opening the housing, unlock all supply voltages – The
housing may only be opened by a qualified electrician. Supply
and switching voltages must be observed.
Please note the symbols on the device:
Caution voltage
Before working on equipment, turn voltage off
Please follow the instructions
The following work is required and can only be carried out by us
or by our authorized experts:
1. The smoke detector is accessible by removing the cover.
2. Maintenance and repair work
Before starting with the maintenance work, the functional
integrity of the unit when it is exposed to smoke must be clarified with the staff. If, due to operational specifications shortterm shutdowns cannot be tolerated, measures must be taken
to prevent this; if necessary by placing a bridge over the alarm
contact, but remembering to remove it after completion of the
service work. After maintenance work, a complete functionality test of all plant parts must be carried out. If defects have
appeared they must be removed immediately. A protocol must
be made after all maintenance work and the results are to be
written into the operation manual, which is to be signed by the
operator in charge.
2. By turning the detector on the base by about 20 °C to the
left the sensor can be unscrewed, and dirt and dust can be
removed. If it is too dirty (indicator >70 %), the sensor must
be removed and exchanged for a new sensor.
3. Also to be cleaned:
• the cover
• the TurboTube measuring tube
• the inner housing
8 | 9 | Fire Protection | Data sheet No. 41300 | Version 01-2012
Duct Smoke Sensor KRM
4. Check the electrical connections, possibly tightening the
terminals. Make visual inspection and clean the electrical
circuit board if necessary, as well as the inner housing. Check
all seals.
5. Assemble all parts
6. Test system by triggering the smoke detector with Oppermann Test Spray.
7. Check with the operator about the function of the downstream systems and components, such as:
• Turning off of fans
• Closing of flaps
• Notification to the building automation system
• When checking network failure and recovery, does the
sensor return to its normal function and does it unlock
again from the state ”smoke alarm” and return to its normal
function when there is no longer any present?
• Release is possible by pressing the reset button (types:
KRM-1-DZ, KRM-2-DZ and KRM-2-DZ-MOD) or with
brief power interruptions (only for types KRM-1, KRM-2,
KRM-2-MOD)
• Release and approve for operation.
233
166
Dimensions
166
24
77
70
233
37.3
40
24
77
50
Dimensions in mm
70
37.3
40
L= min. 160 mm
Oppermann Regelgeräte GmbH | Im Spitzhau 1 | 70771 Leinfelden-Echterdingen, Germany
min.
160 mm | Fax +49 711 7280527 | [email protected] | www.oppermann-regelgeraete.de
Phone +49L=
711
72723560 Subject to change. Fire Protection | Data sheet No. 41300 | Version 01-2012 | 9 | 9
166
83
4
233
~260
110
44
Drilling template
Dimensions in mm
Was this manual useful for you? yes no
Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Download PDF

advertisement