FläktGroup FDKC Smoke detector Installation guide

Brand: FläktGroup

Model: FDKC Smoke detector

Category: Fire protection

Type: Installation guide

FDKC SMOKE DETECTOR

INSTRUCTIONS FOR INSTALLATION, OPERATION AND MAINTENANCE

INSTALLATION

The FDKC (UG-3-O) smoke detector must always be installed in the

direction of the air ﬂow inside the duct. The shape of the smoke

detector mounting ﬂange and the arrow on the casing show the

correct direction of the airﬂow. The smoke detector can be installed

on any side of the air duct.

PLEASE NOTE: For rectangular ducts, in order for the detector to

optimally sample the air, install the FDKC (UG-3-O) on the smallest

side of a rectangular duct.

It is recommended that the FDKC (UG-3-O) be installed at the same

distance from heaters, coolers or humidiﬁers as other ﬂow meters.

A safety distance should be observed between the installation

point of the smoke detector and a source of disturbance such

as a damper, ﬁlter or a duct elbow. When the installation point is

upstream of a source of disturbance, the safety distance is three

times the duct diameter (3 x D),

while if it is downstream of a

source of disturbance, the safety

distance is ﬁve times the duct

diameter (5 x D).

5 dh3 dh

MIN 3xdhMIN 5xdh

UG-3 UG-3

MIN 5xdh

UG-3

dx3 NIM h

3-GU

UG-3

MIN 5xdh

UG-3

dx3 NIM h

3-GU

MIN 3xdh

UG-3

MIN 3xdh

MIN 5xdh

Note of the shape of the mounting

ﬂange, which is installed in the direction of the air ﬂow.

Installation example

downstream of a duct elbow.

Should the smoke detector be installed in a place with humidity

or high ﬂuctuations in ambient temperature such as outdoors, the

smoke detector must be protected from external factors.

Installation example

upstream of a supply air louvre. Supply air louvre

Hydraulic diameter

Installation examples near sources of disturbance

Sources of disturbance include, for example:

• Fan

• Damper

• Silencer

• Radiator for heating or cooling

• Air handling unit

• Duct elbow

• Duct branch

• Duct reducer or increaser

Round duct Rectangular duct

d = D

Ø D

d =

h2xHxB

H+B H

d = D

Ø D

d =

h2xHxB

H+B H

FAN

DUCT BRANCH

DUCT ELBOW

AIR HANDLING UNIT

Supply air

Extract air

FDKC Instructions for installation, operation and maintenance

Drill a hole in the duct:

• Without an installation support brace, ø 38 mm

• With an installation support brace and/or with a venturi tube equipped with an

additional fan, ø 51 mm

• Measure the duct diameter.

• Shorten the venturi tube if necessary.

• The venturi tube should cover at least 90% of the duct diameter.

PLEASE NOTE: See point 8.

• Install the end plug.

• Install the black gasket in the venturi tube.

• Push the venturi tube into the bottom of the adapter.

• Attach the venturi tube into the adapter using a locking screw.

• Install the venturi tube and the smoke detector in the duct.

• Attach the smoke detector adapter into the duct wall using three screws in the

locations marked in the ﬁgure.

PLEASE NOTE: — IMPORTANT!

The airﬂow direction markings (the mounting ﬂange shape and the arrow on top of

the casing) must be installed in line with the duct airﬂow.

FLOW INDICATOR AND VENTURI TUBE WITH ADDITIONAL FAN*

The FDKC (UG-3-O) is equipped with a red plastic ﬂow indicator that twists outward

due to the airﬂow when the smoke detector has been installed correctly.

PLEASE NOTE:

If the ﬂow indicator does not move due to the airﬂow, consider a different installation

point in the duct, or install a venturi tube with an additional fan.

When using a venturi tube with an additional fan, the use of a support brace is re-

quired.

*A venturi tube with an additional fan is a regular venturi tube that includes an addi-

tional fan. The fan needs a separate 24 VAC/DC power supply.

ELECTRICAL INSTALLATION INSTRUCTIONS

• Detach the protective cover by opening the locking clip.

• Push the cable through the Klikseal grommet. If you wish to use different grom-

mets, detach the pre-installed grommets by pushing the grommet out of its hole

ﬁrst from one edge and then the other (1-2).

• The smoke detector is ﬁtted with four IP67 Klikseal grommets for cable diameters

4-11 mm.

PLEASE NOTE: The cable may only be pulled in the direction of the connectors

through the Klikseal grommet. If the cable has to be replaced, it has to be cut

outside the smoke detector and then pulled through the grommet in the direction

of the connectors.

• Connect the wires according to the connection instructions.

Do not shorten this end!

End plug

Locking screw

Gasket

Venturi tube with

additional fan

Flow indicator

(1)

(2)

Locking clip

FDKC Instructions for installation, operation and maintenance

OPERATIONAL TESTING

Check that the smoke detector works using test spray RDP-300 or an equal solution.

• Move the testing hole plug to the side and spray some test gas into the hole.

When the ﬁre alarm is active, a red LED lights up on the circuit board and the

detection component. When the service alarm is active, a yellow LED lights up on

the circuit board, while a green one lights up in the detector.

• IMPORTANT! Seal the test hole with the plug after device operation has been tested.

PLEASE NOTE: Do not drill holes in the casing to attach guides for example. Holes

cause leaks that may signiﬁcantly disrupt the operation of the detector.

VENTURI TUBE INSTALLATION IN DUCTS OF DIFFERENT DIAMETERS

Standard 600 mm venturi tube for ducts

under 600 mm in diameter.

1500 mm venturi tube for ducts

with a diameter of 600-1400 mm.

2800 mm venturi tube for ducts

with a diameter of over 1400 mm.

INSTALLATION IN PLACES WHERE CONDENSATION MAY OCCUR, SUCH AS UNHEATED ATTICS AND OUTDOORS.

Drill a hole of

Ø 38 mm.

Drill a hole of

Ø 38 mm.

• Shorten the venturi tube to its

correct size.

• Install the end plug.

• Install the plastic

end gasket.

• Install the rubber

gasket, HFU204.

PLEASE NOTE:

Drill a hole of

Ø 51 mm.

Max. channel diameter 600 mm.

Use a venturi tube of 600 mm.

Shorten if necessary.

Diameter of channel over 600 mm.

The venturi tube has to extend

through the entire duct.

The venturi tube must not protrude over 30 mm from the duct.

Smoke detector

Sign plate

Drill a hole

Ø 38 mm.

Insulate the entire smoke detector

using insulation with a thickness of

100-200 mm. Mark the location of

the insulated smoke detector with a

sign outside the insulation.

For outdoor installations, use

a cover such as the Calectro

UG-COVER.

Drill a hole

Ø 38 mm.

SUPPORT BRACE FOR ROUND DUCTS OR INSULATED RECTANGULAR DUCTS

Drill a hole

Ø 51 mm.

The installation support brace can even be attached

to ducts that are only 100mm in diameter.

The installation support brace can

be easily shaped to ﬁt a round or

rectangular duct.

The installation support brace is

delivered straight.

Insulated rectangular duct

Rubber

gasket

Round duct

Rubber

gasket

Attach the

installation

support brace

to the duct

FINAL INSPECTION

• Check that the air ﬂow direction markings in the smoke detector

mounting ﬂange and on the casing are in line with the duct

airﬂow.

• Check that the test hole is properly plugged using the rubber

plug supplied.

• Check that the ﬂow indicator moves with the airﬂow, thus verify-

ing that the airﬂow is correct for the smoke detector.

• It is recommended that you verify that the smoke detector’s ﬁre

alarm works by leading smoke from a smoke generator directly

into the air duct and making sure that the smoke detector trig-

gers an alarm.

CONNECTION

The smoke detector is to be connected into a FICO ﬁre damper

control system FICO PRO or FICO MINI control unit, or a FCBB-2

or FCBB-4 connection box, in accordance with the connection

diagram supplied:

FICO PRO

FICO MINI

FCBx-2

FCBB-4

G1 2

2.2 kΩ

FICO PRO

FICO MINI

FCBx-2

FCBB-4

G2 2

2.2 kΩ

FDKC

(UG-3-O)

FDKC

(UG-3-O)

FICO PRO

FICO MINI

FCBx-2

FCBB-4

G1 2

2.2 kΩ

FICO PRO

FICO MINI

FCBx-2

FCBB-4

G2 2

2.2 kΩ

FDKC

(UG-3-O)

FDKC

(UG-3-O)

FICO PRO

FICO MINI

FCBx-2

FCBB-4

G1 2

2.2 kΩ

FICO PRO

FICO MINI

FCBx-2

FCBB-4

G2 2

2.2 kΩ

FDKC

(UG-3-O)

FDKC

(UG-3-O)

To avoid induction coupling disturbances, the smoke detector cable

must always be installed separately from the power cables. The

recommended max. length of the cable is 15 m, and the cable

must not exceed 30 m in any circumstance.

PLEASE NOTE: If using a FDKC (UG-3-O) smoke detector connected

to a FICO system, a 2.2 kΩ terminal resistor must always be ﬁtted to

the smoke detector.

CLEANING

The smoke detector may be cleaned using a soft, lint free cloth or

by blowing it using clean compressed air. It is recommended that

you replace extremely dirty smoke detectors

TROUBLESHOOTING

The smoke detector activates an alarm without smoke.

• The smoke detector is defective, the sensor chamber is dirty

or there is moisture condensed in it. Clean the detector sensor

chamber according to instructions or replace the extremely dirty

detection component, if necessary.

The FICO control system triggers a service alarm or a ﬁre alarm, al-

though the smoke detector is not triggering one.

• Check that there is a terminal resistor ﬁtted to the smoke detec-

tor. If there are multiple detectors in the detection circuit, only

the last smoke detector must be ﬁtted with a terminal resistor.

• Check that the detection circuit resistance equals 2.2 kΩ.

• Check that the FICO control system smoke detector output is

working by detaching the smoke detector wires and attaching a

2.2 kΩ resistor directly to the smoke detector output.

• Use a multimeter to check that the smoke detector pins 1(-) and

2(+) receive a ~18 VDC input voltage. The polarity of the input

voltage matters, so make sure that the wires are connected the

right way around.

FDKC Instructions for installation, operation and maintenance

FläktGroup FDKC Smoke detector Installation guide

Brand: FläktGroup

Model: FDKC Smoke detector

Category: Fire protection

Type: Installation guide

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FläktGroup FDKC Smoke detector Installation guide

FläktGroup FDKC Smoke detector Installation guide

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