VALLOX 90 SE
INSTRUCTIONS FOR USE
5
2.4. Ventilation control with carbon dioxide sensor (option)
• In carbon dioxide control, VALLOX 90 SE 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...5 carbon dioxide sensors can be connected as options to the VALLOX 90 SE unit.
• The adjustment is switched on / off 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 1,000 ppm.
• When carbon dioxide control is on, the control panel may be used to raise fan speed to the
maximum fan speed and to decrease it to the basic fan speed. In carbon dioxide control,
maximum fan speed limitation is enabled.
2.5. Ventilation control with humidity sensor (option)
There are two methods for adjusting fan speed.
1.
Automatic humidity setting
, which is suitable for controlling humidity in washing rooms, for
instance. 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 after a shower, for example. The setpoint
automatically varies according to season, for instance, and is always at the right level. This
setting is factory selected.
2. Humidity level can also be set
fixed
. The setting can range between 1...99% RH and is set
at the control panel. This can be used in public saunas and swimming pools, for instance.
The program aims at keeping humidity at the setpoint. The setpoint can be changed if
needed.
The mode of adjusting is chosen at the controller. Recommended humidity content of good
indoor air is approximately 45%.
• When this control is on, the control panel may be used to raise fan speed to the maximum
fan speed and to decrease it to the basic fan speed.
• In humidity control, fan speed varies between the basic and maximum fan speeds selected.
• When the unit is taken into use for the first time
with automatic setpoint search selected
(factory
setting),
it will take 3 to 10 hours for the program to define the value
. During this time, humidity
adjustment is not enabled (because the first value, selected at the factory, is 100%).
• Automatic search is enabled even if humidity control is not selected.
2.6. Ventilation control with voltage or current signal
• VALLOX 90 SE fan power can be controlled with a voltage or current signal coming from
remote monitoring.
• The signal can be used to select speeds 0–8. However, if carbon dioxide or humidity
adjustment is enabled, the maximum fan speed cannot be exceeded.
• The signal changes the basic 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.
2.7. Ventilation control with remote monitoring system (option)
• With an optional LON converter, VALLOX 90 SE can be connected to the remote monitoring
system.
• When VALLOX 90 SE is connected to the remote monitoring system, compatibility between
the two needs to be ensured.
• The remote monitoring system can control the same functions as the control panel does.
• The remote monitoring system works in parallel with the control panel as well as carbon
dioxide and humidity sensors.
2.8. Post-heating (option)
For most of the year, heat recovered from the air being extracted is enough to warm the cold
air coming from the outside to a suitable temperature. If the heat of extract air is not enough,
air coming from the outside may be heated further, as needed, with an electric radiator, which
can be ordered as an option for the unit. Post-heating is switched on at the control panel (see
the instructions for using the control panel, section 3.1.). When heating has been switched on,
the unit automatically adjusts the selected supply air temperature.
Carbon dioxide sensor (CO
2
)
Humidity sensor (RH)
2.8.
LON converter
Содержание 90 SE Series
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