Duka PRO 230 Manuale d'uso e d'installazione - Pagina 8

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Before using the fan, carefully read these instructions and the warranty conditions.

PRO 230 is designed for fixed installation and must be installed by a qualified electrician.

All the illustrations referred to in the text can be found on page "III". Fold the page out to the

left so that you can see the illustrations while reading the user guide.

The PRO 230 exhaust fan is designed to boost the air flow in houses* with natural draught ventila-

tion. It is suitable for installation in wet rooms and can be installed in ducts with and without natural

ventilation**.

The fan fits ducts with a diameter of Ø or 100 – Ø 140 mm. For larger duct dimensions a cover

plate for the PRO-series must be used. To ensure that the PRO 230 does not affect other ventilation

systems and is not affected by them, the fan must always be installed in its own duct. Make sure that

the duct is clear of obstructions. Avoid insect mesh, filters and other objects that may obstruct the

flow of air. To prevent condensation in natural draught ducts (in winter), the ducts must be insulated

where they pass through unheated areas such a cold attics.

To avoid backdraughts in ducts without natural draught (eg through an external wall), a back-

draught shutter (see page II) can be retrofitted. This requires another ventilation system to handle

the basic ventilation flow of the building. NOTE: A backdraught shutter is harmful if the fan is

installed in a ventilation duct with natural ventilation.

The fan is designed for use in a temperature range of 5 to 35 °C. If the fan is installed in a cold area

or if it has been stored in a cold place before installation, it may run slowly when started for the first

time. The fan will work normally when it reaches its working temperature.

Make sure that air can enter the bathroom, for example through a large gap at the door or by using

a transfer air unit. We recommend the use of genuine accessories (see page II) to ensure that the fan

works properly and delivers the correct capacity.

* Primarily detached houses and holiday homes, but can also be used in multi-dwelling

buildings with separate, short ventilation ducts.

** With natural draught ventilation, air is carried upwards through ventilation ducts and

out of the building (see page 15). For natural draught ventilation to work, the air inside

the building must be warmer (and therefore lighter) than the air outside.

Natural draught ventilation therefore works best during the winter. Natural draught

ventilation will be reduced or absent if the temperature differential (inside/outside)

is small or non-existent. For this reason, buildings are often poorly ventilated when the

weather is warm.

FunCtions – settings

Humidity control (see Figure C)

A built-in humidity sensor starts the fan when the humidity is high. The area where the fan is

installed must be dry when you set the humidity sensor. First turn the control (C2) clockwise until

the fan starts. Then turn the control slowly anticlockwise until the fan stops. The humidity sensor is

now set to start the fan when the humidity goes above the set level.

NOTE: When you are setting the humidity, the IR control must be in the deactivated position (C1 position 3).

Presence sensor - IR/light with automatic timer function (see Figure C)

The fan has a presence sensor (IR/light). The following settings can be made with the IR control (C1).

- Setting 1: The fan starts immediately when someone moves in the presence area (see

sketch, page 15). The fan also starts if the light level changes rapidly.

- Setting 2: Same as setting 1, but starting is delayed by 2½ minutes.

- Setting 3: Presence sensor disconnected.

If the fan is started by IR/light, it runs with a fixed timer function of 15 minutes, after which it stops. If

the IR sensor registers a new "presence", the fan starts/forces again after 10 seconds.

NOTE: If the fan is activated by the humidity sensor, this signal "overrides" the presence sensor.

The fan then runs continuously until the humidity in the room is restored to the normal level.

Switch-controlled timer function

Important: Inform your electrical installer before the installation work starts if you want any of the func-

tions below, since they require electrical wiring to a separate switch or light switch.

In addition to the IR function, the built-in electronics of the fan include a function for manually-

activated timer function (via a switch).

- When the separate switch or the light switch of the room is turned on, the fan starts.

- When the switch is turned off, the fan continues to run for 15 minutes (the timer function),

- after which it stops.

NOTE: If the fan is activated by the humidity sensor, this signal "overrides" switch-controlled timer function.

Direct starting with a switch

In addition to the IR function, the built-in electronics of the fan include a manual switching facility

(via a switch).

- When the separate switch or the light switch of the room is turned on, the fan starts.

- When the switch is turned off, the fan stops immediately.

Cleaning

For the fan to keep working and maintain its capacity it must be cleaned at least twice a year and

more often if necessary.

• Disconnect the fan from the electric power supply before cleaning it.

• Push the two locking buttons towards the centre (A1) and lift the motor unit out of

the frame (see Figure A). Then remove the motor unit (A2).

• Clean the opening, the duct and the motor unit with a damp cloth (a mild detergent

may be used if necessary).

• The impeller can be cleaned in place. If the impeller is very dirty you can remove it by pulling

it straight out (see Figure B). It can then be washed and rinsed.

(To avoid rust, allow the impeller to dry before refitting it to the motor shaft.)

• Do not use solvents on the fan.

• Do not immerse the fan in water or flush water jets on it.

environMent

A fan that is no longer serviceable should be recycled as electronic scrap.

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