Regin SDD-S65-R Instruction page 2

SDD-S65-R
Flow
IMPORTANT: Read these in-
structions before installation and
!
wiring of the product.
7 1
1 SDD-S65-R
8 2
2
ABV...
3
9 3
4
10 4
5
11 5
12 6
6
7
Relay drawn in
8
alarm position
Fig 1
1 SDD-S65
2
2.2 kOhm 3
4
5
-
SDD-S65-R
1
24 V DC
+
2
3
Fig 2
4
5
Relay drawn in 6
7
alarm position
8
Box 116 428 22 KÅLLERED SWEDEN
Tel +46 (0)31 720 02 00 Fax +46 (0)31 720 02 50
INSTRUCTIONS
Ionisation smoke detector for duct mounting
SDD-S65-R are ionising smoke detectors for smoke detection in
ventilation systems. SDD-S65-R have a relay output for use when
there is need for a local smoke-alarm output. They are intended for
use together with Regin's ABV-300/D or ABV24-300/D control units.
The control units act as power supply for the detectors and also as
alarm output units. One control unit can supervise several detectors.
SDD-S65-R can also be used without a control unit.
Installation
Make a 30mm hole at a suitable location on the duct. The unit
should be mounted at least 3 ductdiameters away from bends, air
intakes or other sources of disturbance to the airflow in the duct.
Remove the enclosure lid and remove the detector head which is
bayonet mounted. Mount the venturi tube by removing the screw
from the tube's unclosed end, stick the end of the tube into the hole
in the bottom of the enclosure with the holes in the tube aligned with
the enclosure's longitudinal axis. Fasten the screw through the hole
in the PC-board. Replace the detector head. For round ducts and for
insulated ducts special mounting brackets are available as an extra
accessory.
To shorten the venturi tube remove the endplate and gasket from
the tube's outer end, shorten the tube making sure to cut it at right
angles and remount gasket and plate.
Temporarily replace the lid oriented so that the LED on the detector
head is visible through the window.
Put the tube through the hole in the duct, orient the unit so that the
arrows on the lid point in the flow direction and fasten the unit to the
duct using the mounting "wings". For round ducts the wings can be
bent to fit the duct curvature.
Wiring
Control unit
Wire the detector according to figure 1.
The detector is wired to the control unit through a two-wire current
loop. If the loop includes more than one detector, interconnect the
units according to the figure. The loop is closed by connecting the
supplied 2.2 kOhm end resistor between terminals 1 and 5. The end
resistor should only be mounted in the last detector in the loop. If the
loop lacks an end resistor or if there are more than one resistors, the
control unit will give an alarm.
A loop may not contain more than one SDD-S65-R.
INSTRUCTIONS
Alarm relay
2 A 24 V AC. Single pole, voltage free, change-over relay
Terminal 6 Normally closed
Terminal 7 Common
Terminal 8 Normally open
Supply voltage without control unit (figure 2)
24 V DC
Terminal 1 -
Terminal 2 +
Termination resistor should not be mounted in this application.
N.B. When using the SDD-S65-R without control unit there will
be no alarm function in the event of power loss.
Function indicators
Flow indicator
The unit has a built-in flow detector, a red plastic strip placed
across the fresh air inlet. When the unit is functioning correctly
the incoming airflow will bend the strip slightly, thus indicating
that there is a flow through the housing.
Smoke alarm
The detector head has a built-in LED for alarm indication. The
LED is normally extinguished but will light up red at a smoke
alarm. Simultaneously the alarm relay is activated.
Function test
The housing has a hole with a red plastic plug to simplify testing
with test gas. Avoid spraying gas directly onto the detector head
and only use small amounts at a time to avoid unnecessary
contamination of the detector.
Maintenance
The detector should be tested and cleaned on a yearly basis
to ensure proper function. Cleaning of the venturi tubes, the
housing and the outside of the detector head can be done using
a vacuum cleaner.
N.B. Do not try to disassemble the detector head for cleaning.
EMC emissions & immunity standards
This product conforms with the requirements of European
EMC standards CENELEC EN 50081-1 and EN 50082-1 and
carries the CE mark.