CALECTRO UNIGUARD UG-2-A2 Manual - Page 2

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UNIGUARD UG-2-A2 STAND-ALONE-UNIT

Smoke detector for duct installation.

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

Phone: +46 31-69 53 00 Fax: +46 31-29 32 91 [email protected] www.calectro.com

DIMENSIONS

(mm)

WIRING DIAGRAM

Alarm

output

Supply 24 VADC 100mA (±20%)

Alarm relay:

ONE changing contact,

max 250V, 2Amp

Note!

Changing between AC and DC is made by a jumper.

= 24 VDC

= 24 VAC

The jumper is factory set to AC.

External

reset button