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.
- One-tube air sampling system
- Service alarm
- Test hole on cover
- Simple installation
- Sensitive flow indication
- Filter for dusty environments
- Simple service and maintainance
- Installer-friendly connection of cables
- Foolproof mountage of sampling tube
- Reset button on front cover
- Built-in alarm relay
FUNCTION
Uniguard has been developed to detect smoke in ventilation
ducts and combines a smoke detector and an adaptor system
where both tube and housing are specially designed for
optimum airflow through the smoke detector.
The system fulfils all the requirements for safe fire detection
with airflow speeds from 0,2 m/s to 20 m/s.
Uniguard has a built-in alarm relay to control fire-safety
dampers, to stop ventilation fans, or to activate accoustic and
optical alarms etc.
The service alarm let you know when maintenance is needed,
before a false alarm occur.
The detector has a bayonet fitting to simplify mounting and
removal.
A contaminated detector will result in increased sensitivity
and false alarms. To avoid nuisance alarms the detector has
a service alarm (green LED). This indicates that the detector
should be cleaned.
BASIC PRINCIPLES FOR POSITIONING
For the airflow through the adaptor to be representative of the
airflow in the ventilation duct, install the detector at a place
where normally flow meters etc. should be mounted, please
see our installation instructions.
You can also use your national or local rules for mountage
according to "Methods for measuring airflow in ventilation
systems".
ACCESSORIES
Filter:
F1-UG/10
pack
Mounting bracket:
UG-Beslag
(For insulated/circular ducts)
Waterproof housing:
UG-SH for outdoors, in
cold attics etc.
TECHNICAL DATA
Detector type:
Ionisation
-
UG-2-A2I
Optical
-
UG-2-A2O
Voltage Supply:
24VAC
100
mA
±20%
Operating temperature:
-10°C
to
+50°C
Maximum humidity:
99%
rH
Tested and approved
according to EN-54:
by LPC (England), VdS (Germany)
Service alarm:
Indicated with green LED
Fire alarm:
Indicated with red LED
Adaptor housing:
ABS
Air sampling tube:
Aluminium.
Standard
length
0,6 m. Hole diameter 35mm.
The length of the venturi pipe shall
be choosen based upon how wide
the ventilation duct is. The venturi
pipes are available in 3 lengths;
0,6, 1,5 and 2,8 m. When the ven-
tilation duct is wider than 0,6 m
(dia), the venturi pipe should pen-
etrate
the
whole
duct.
Please see enclosed sketch.
Shorten the pipe to correct length.
Insert the end plug.
Put on the end plastic
gasket.
Put on the rubber
gasket, TET 26-35.
Drill a hole
Ø 50 mm.
NOTE!
Drill a hole
Ø 35 mm.
Diameter of the duct bigger
than 0,6 m.
The venturi pipe should
penetrate the whole duct.
Drill a hole
Ø 35 mm.
Max diameter of the duct 0,6 m.
Use the venturi pipe 0,6 m.
Shorten the pipe, if necessary.
For ducts with a ø of less than 0,6 m use the 0,6 m tube.
For ducts with a ø of between 0,6 m and 1,3 m use the 1,5 m tube.
For ducts which are larger than 1,4 m use the 2,8 m tube.
The venturi pipe shall not
protrude more than 30 mm
through the duct wall.
