Airflow DUPLEXVENT DV145SE Інструкції з експлуатації, технічного обслуговування та технічні вказівки - Сторінка 2

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Operating instructions DUPLEXVENT DV145SE

For indoor air to stay healthy and beneﬁ cial also for the structures

of the dwelling, ventilation has to be in operation continuously. It is

not advisable to stop ventilation even for longer holidays because

it makes indoor air stu y. Also, during the heating season indoor

air humidity may condense in the ducts and structures and therefore

cause humidity damage. The sensors automatically adjust ventilation

to an optimal level even if the dwelling is empty.

Making the unit ready for operation

1. Connect the plug to the mains supply. DUPLEXVENT DV145SE

is now ready for operation.

2. Start the unit and choose a suitable ventilation power at the

control panel. There is either one or more control panels. See

the operating instructions for control panel.

In normal conditions basic ventilation, with a change of air every

two hours, is sufﬁ cient in living areas. Boosting is needed during for

example sauna baths, cooking, clothes washing or family parties.

If carbon dioxide and/or humidity sensors have been installed in

the system, DUPLEXVENT DV145SE automatically takes care of

demand-controlled ventilation.

Ventilation control

The unit can be controlled with a control panel. The standard week-

clock control can be used to control the fan power of the unit and

the setpoint for supply air temperature.

Furthermore, demand-controlled ventilation can be adjusted with

optional carbon dioxide and humidity sensors.

The fan power of the unit can also be controlled with a voltage

signal.

Controlling ventilation with Air ow Digit SED

control panel

The control panel can be used for the following

ventilation control functions:

Functions for adjusting ventilation

power

• Starting and stopping.

• Power adjustment (8 positions).

• Setting the base fan speed and the

maximum fan speed.

Ventilation power cannot be set lower than

the base fan speed. When carbon dioxide and/or relative

humidity adjustments are activated, power cannot be adjusted

higher than the maximum fan speed. When humidity and carbon

dioxide adjustments have been switched o , fan speed can be

raised to speed 8. (See the operating instructions for control panel,

Section 3.25.)

Ventilation control with carbon dioxide sensor

(option)

• In carbon dioxide control, DUPLEXVENT DV145SE adjusts fan speed

so as to keep carbon dioxide content in the ventilation zone

below the setpoint. When two or more sensors are used, fan

speed is adjusted according to the highest measuring result.

• 1 to 2 carbon dioxide sensors can be connected as options to

the DUPLEXVENT DV145SE unit.

• The adjustment is switched on/o and, if needed, the setpoint

(500...2000 ppm) is set at the control panel. The factory

setting is 900 ppm. The recommended maximum carbon

dioxide content in good indoor air is circa 1,000 ppm.

• During control, the control panel can be used to raise fan

speed to the maximum fan speed and to decrease it to the

base fan speed. In carbon dioxide control, maximum fan

speed limitation is enabled.

DV145SE

Controlling ventilation with humidity sensor (option)

There are two modes of adjusting fan speed:

1 Automatic humidity setting, which is suitable for controlling

humidity in for example washing rooms.

The program records current humidity level and selects it

as the setpoint, which it then uses as the target for drying

air in a bathroom, for instance after a shower. The setpoint

automatically varies for instance according to season and is

always at the right level. This setting is factory selected.

2 Humidity level can also be set ﬁ xed. The setting can range

between 1...99 %RH and is set at the control panel. This can

be used in for example public saunas and swimming pools. The

program aims at keeping humidity at the setpoint. The setpoint

can be changed if needed. The mode of adjustment is chosen

at the controller. Recommended humidity content of good indoor

air is approximately 45%.

• During this control, the control panel can be used to raise fan

speed to the maximum fan speed and to decrease it to the base

fan speed.

• In humidity control, fan speed varies between the base and

maximum fan speeds selected.

• When the unit is ﬁ rst taken into use with automatic setpoint

search enabled (factory setting), it takes 3 to 10 hours for

the program to deﬁ ne the value. During this time, humidity

adjustment is not enabled (because the ﬁ rst value, selected at

the factory, is 100%).

• Automatic search is enabled even if humidity control is not

selected.

Controlling ventilation with voltage signal

• DUPLEXVENT DV145SE fan power can be controlled with a voltage

signal coming from remote monitoring.

• The signal can be used to select speeds 0 to 8. However, if

carbon dioxide or humidity adjustment is enabled, the maximum

fan speed cannot be exceeded. (See the operating instructions

for control panel, Section 3.25.)

• The signal changes the base fan speed.

• The signal does not lock fan speed, i.e. fan speed can be

changed at the control panel within the set limits. Carbon

dioxide and humidity adjustment also operate within the set

limits.

Voltage signal values

Voltage values for each fan speed:

OPERATING INSTRUCTIONS

Carbon dioxide and humidity sensors

0.20...1.25 VDC

1.75...2.25 VDC

2.75...3.25 VDC

3.75...4.25 VDC

4.75...5.25 VDC

5.75...6.25 VDC

6.75...7.25 VDC

7.75...8.25 VDC

8.75...10.00 VDC

What the units include can vary depending on the sales area.