UG 3 A4O

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UG-3-A4O UNIGUARD SUPERFLOW STAND-ALONE-UNIT 24V
Optical smoke detector with service alarm for duct installation.
CHARACTERISTICS
- Patented venturi pipe and duct housing
- One-pipe air sampling system Uniguard Superflow
- New cross-section (shape) of the venturi pipe
gives an optimum of venturi effect
- Service alarm
- Test hole on cover
- Simple installation
- Sensitive flow indicator
- Simple service and maintenance
- Installer-friendly connection of cables
- Foolproof installation of venturi pipe
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.
There is a built-in alarm relay to control fire-safety dampers,
to stop ventilation fans, or to activate accoustic and optical
alarms etc.
There is a built-in service alarm relay to let you know when
maintenance is needed, before a false alarm occurs.
The detector contains an intelligent controlling circuit. This
circuit is adjusting the sensitivity to give an optimal function
during the whole life time of the detector. When the controlling
circuit can no longer compensate for contamination, a service
alarm is indicated.
Uniguard Superflow has 4 premounted IP67 approved cable
entries with built-in cable anchorage for diameter 4-11 mm,
type Klikseal.
The detector has a bayonet fitting to simplify mounting and
removal.
ACCESSORIES
Item code Designation
UG-MB Mounting bracket (for insulated/
circular ducts)
UG-COVER Waterproof housing (for mounting
outdoors, in cold attics etc.)
VR-0.6M Venturi pipe (length 0,6 m)
VR-1.5M Venturi pipe (length 1,5 m)
VR-2.8M Venturi pipe (length 2,8 m)
TECHNICAL DATA
Voltage Supply: 24V AC/DC ±10%
Detector type: Optical UG-3-A4O
Max. power consumption: 165 mA
Operating temperature: -10°C to +55°C
Maximum humidity: 99% rH
Duct air velocity range: Approx. 0,2 to 20 m/s
Approvals
UG-3-A4O: VdS (Germany)
Detector head: EN-54-7
Relay output: Potential free
Smoke alarm relays: Two changing contacts 250V, 5A
Service alarm: One breaking contact 250V, 5A
LED on smoke detector: Green - service alarm
Red - smoke alarm
LED on PCB: Green - normal operation
Yellow - service alarm
Red - smoke alarm
Adaptor housing: ABS
Protection: IP54
Air sampling tube: Aluminium.
Standard length 0,6 m. Hole diameter 38 mm.
The length of the venturi pipe shall be chosen 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 ventilation duct is wider
than 0,6 m (dia), the venturi pipe should penetrate the whole
duct. Please see below 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.
NOTE!
Drill a hole
Ø 51 mm.
Drill a hole
Ø 38 mm.
Drill a hole
Ø 38 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 pipe.
For ducts with a ø of between 0,6 m and 1,4 m use the 1,5 m pipe.
For ducts which are larger than 1,4 m use the 2,8 m pipe.
The venturi pipe shall not
protrude more than 30 mm
through the duct wall.
Diameter of the duct bigger
than 0,6 m.
The venturi pipe should
penetrate the whole duct.