Regin SDD-OE65(-RAC) Instructions Manual

EN INSTRUCTION
SDD-OE65(-RAC)
IN20098 REV. A, 2024-01-16
C C a a u u t t i i o o n n ! ! Read and understand the instruction before using the product.
C C a a u u t t i i o o n n ! ! Ensure that the installation complies with local safety
regulations.
C C a a u u t t i i o o n n ! ! Before installation or maintenance, the power supply should first
be disconnected. Installation or maintenance of this unit should only be
carried out by qualified personnel. The manufacturer is not responsible
for any eventual damage or injury caused by inadequate skills during instal-
lation, or through removal of or deactivation of any safety devices.
Smoke detector for duct mounting
The detector comes in two types, with or without relay.
Function
SDD-OE65 is connected to the control unit ABV... with a two-wire
loop. The last detector in the loop is connected to the end resistor
supplied together with the control unit to provide a closed signal loop.
SDD-OE65-RAC have a relay and are not to be connected to Regin's
control units ABV... The built-in relay makes it possible for the unit to
independently give an alarm without connection to a control unit.
The detector housing has a window giving a clear view of the flow
indicator and the alarm LED. The LED lights up when there is a fire
alarm, but is normally off.
The SDD-OE65 have a built-in service alarm function for sensing the
dust and dirt accumulation which inevitably occurs over time. When the
degree of dirt has reached the level at which there is the risk of false
alarms, a service alarm is given indicating that cleaning is required. This
is indicated by a red LED on the detector and by a yellow LED on the
connected control unit, type ABV-S-300/D or ABV24-S-300/D.
Installation
The detector should be mounted at least three duct widths away from
duct bends and fresh air inlets.
The holder is designed so that it will also fit directly onto round ducts.
1. Drill the required hole for the venturi tube in the duct (Ø 30 mm).
2. Remove the housing lid and remove the detector head which is
bayonet mounted.
3. 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 housing with the holes in the tube aligned with the housing's
longitudinal axis. Fasten the screw through the hole in the PC-board.
4. Replace the detector head.
5. 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 (see figure 1).
6. Fasten the unit to the duct using the mounting "wings". For round
ducts the wings can be bent to fit the duct curvature. For insulated
ducts, the mounting plateTDS is available as an extra accessory.
1
Figure 1 Flow direction
①
Flow
The venturi tube has lips that match the tube holder on the housing. The
venturi tube can be shortened for smaller ducts by removing the end
SDD-OE65(-RAC)
plate and gasket from the tube's outer end, shorten the tube making sure
to cut it at a right angle, and remount the gasket and plate. Check the
flow indicator after re-installation to make sure there is air flow to the
detector.
For larger ventilation ducts, a longer venturi tube can be ordered.
When the detector has to be mounted at a distance from the duct (e.g.
when insulation material is used) the mounting plate TDS should be
used. A distance bushing for mounting on the venturi tube is delivered
with the mounting plate.
Wiring
SDD-OE65
The detector is wired to the control unit through a two-wire current
loop. The loop is closed by connecting the supplied 2.2 kΩ end resistor.
If the loop contains more than one detector the end resistor should only
be mounted in the last detector in the loop. If the loop lacks an end
resistor or if there is more than one resistor, the control unit will give an
alarm.
Wire the detector according to the wiring diagram below:
7 1
8 2
ABV...
9 3
10 4
11 5
12 6
SDD...
1
2
3
4
5
SDD... 1
2
3
1
4
5
Figure 2 Wiring SDD-S65-OE to ABV... Note: -RAC models should not be mounted in
loop or to a control unit
①
End resistor 2.2 kΩ (deliv-
ered with ABV...)
1 (6)