Phone: +46 31-69 53 00 Fax: +46 31-29 32 91 [email protected] www.calectro.com
UNIGUARD UG-2-A2 STAND-ALONE-UNIT
Smoke detector for duct installation.
DIMENSIONS
(mm)
INSTALLATION
The venturi tube is made of aluminium and can easily be
shortened to suit the diameter of the duct. Hole diameter is 35
mm. With insulated or circular ducts - use the mounting bracket,
hole diameter is then 50 mm.
MAINTAINANCE
When the detector becomes contaminated, sensitivity is
increased, triggering the service alarm. This can be avoided
for a considerable time by cleaning the detector once a year
with a vacúum cleaner.
CHECKING AIR FLOW
The detector is equipped with a flow indicator which oscillates
in the air stream when the detector is correctly installed. This
gives simple confirmation that there is no leakage, and that air
from the ventilation duct is flowing through the detector.
FUNCTION TEST
When installation is complete, the detector should be tested.
This can be carried out with smoke or suitable testspray for
example RDP-300 (from Calectro), use the test hole on cover.
D o not forget to refit the plastic plug after test.
NB: When installing outdoors or in cold attics etc., where
there is a risk for condensation, this requires that the detector
is insulated from the surrounding air by means of for example
our waterproof housing UG-SH, and marked with an extra
indicator lamp, LED-01 and a sign marked "Hidden Detector".
FUNCTION
Normal operation:
In normal operation the alarm relay
is energized, and the relay contacts
are closed between C and NC.
Smoke alarm:
The LED of the detector is showing
red light and the relay contacts are
changing to C and NO.
Reset:
After alarm the reset push-button has
to be pressed in order to have the
detector
back
into normal operation.
Pre-alarm:
When the detector is sensing smoke or
is dirty the LED of the detector will first
show green colour before going into
alarm with red light. If the detector is
dirty, it will show green light. This is
an optical indication (a pre-alarm or
service-alarm) which means that the
detector is contamined and if it is not
cleaned, it will later on give a false
alarm.
Failure:
If there is something wrong with the
detector, the alarm relay will change
contacts:
a) If the detector module is taken away
b) If the supply voltage is interrupted
WIRING DIAGRAM
Alarm relay:
ONE changing contact,
max 250V, 2Amp
Note!
Changing between AC and DC is made by a jumper.
The jumper is factory set to AC.
External
reset button
Supply 24 VADC 100mA (±20%)
Alarm
output
NC
NO
C
= 24 VDC
= 24 VAC
