Controls - Heatrae Sadia Advance Plus Installation Manual

2.7. Controls

The ventilation unit is normally equipped with a three-level control
which allows the flow rates at low and high speed to be adjusted as
desired with potentiometers on the unit. It is also possible to pair
RF sensors with the ventilation unit for automatic ventilation control.
In addition, the ventilation unit has some automatic controls that
operate continuously in the background.
Every RF control switch and/or RF sensor must be paired separately.
You can pair and use up to 20 RF devices.
2.7.1. Optional sensors
A number of optional RF sensors are available for the ventilation
unit. When the ventilation unit is in Auto mode, the capacity is
adjusted continuously and automatically.
RF-CO -sensor
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To ensure a healthy indoor climate and to prevent the air in the
dwelling from becoming stale, it is important that the CO
dioxide) concentration does not become too high.
The sensor can be placed in any room (except the bathroom), but
should preferably be placed in the living room or bedroom.
The sensor measures the CO
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translates this CO concentration into a ventilation demand and
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communicates this wirelessly to the ventilation unit paired with the
sensor. This allows ventilation to be continuously and automatically
adjusted, and it ensures that a good indoor climate is achieved in
the most effective and energy efficient manner.
This sensor can be used for "living area control", which causes the
ventilation capacity to be increased gradually in response to a rising
CO concentration. A "sleeping area control" is also available. In
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this mode the ventilation capacity is increased more quickly in the
event of rising CO concentration because the extraction points are
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generally further away from the sleeping area.
In addition, the user can choose between ECO or COMFORT mode
on the sensor. In COMFORT mode the system starts increasing the
capacity at relatively low CO concentration, resulting in more
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ventilation.
Once the CO concentration has fallen sufficiently, the capacity is
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automatically decreased.
RF-RH sensor
To ensure a healthy indoor climate and to prevent patches of damp
and mould in the dwelling, it is important that the relative humidity
does not stay high for too long.
The sensor can be placed in any room desired, but preferably in a
room where a lot of moisture is produced, such as a bathroom.
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(carbon
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concentration in the room. It
This sensor measures the relative humidity in the room. The sensor
translates the measured value into a ventilation demand and
communicates this wirelessly to the ventilation unit, with which the
sensor is paired, or to a DF/QF controller for the room where it is
registered. This allows ventilation to be continuously and
automatically adjusted, and it ensures that a good indoor climate is
achieved in the most effective and energy efficient manner.
This sensor can be used for "bathroom control", which causes the
ventilation capacity to be increased quickly when there is a sudden
rise in relative humidity (for example during showering). Another
option is "washroom control", which causes the ventilation capacity
to increase gradually in response to rising relative humidity.
As soon as the relative humidity has fallen sufficiently, the capacity
is automatically decreased.
RF-PIR sensor
To ensure a healthy indoor climate and to prevent unpleasant
odours in the dwelling, it is important that there is enough
ventilation when people are present.
The sensor can be placed in any room, for example in the toilet or
in a bathroom with a toilet.
The sensor detects the presence (or absence) of people in the room
and communicates this wirelessly to the ventilation unit with which it
is paired.
If the ventilation unit is in Auto mode, the capacity is continuously
and automatically adjusted.
If the sensor detects movement, the ventilation system runs at
increased capacity for a defined period. If the sensor detects
continuous occupancy of the room, the capacity will be increased
even more. If the motion sensor does not detect any movement
within a set period, the capacity will automatically be decreased
again.