Controls - Heatrae Sadia ADVANCE Installer Manual

2.7. Controls

The Advance and Advance Plus come as standard with three-
position control which allows the flow rates at low and high speed
to be adjusted as desired with the potentiometers on the unit. It is
also possible to pair RF sensors with the ventilation unit for
automatic ventilation control. In addition, the ventilation units have
some controls that operate continuously in the background.
The Advance Plus also has a bypass control which controls the
bypass valve (see Bypass control on page 12).
2.7.1. Optional sensors
A number of optional RF sensors are available for the Advance and
Advance Plus. 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 RF-RH sensor can be placed in any room, but preferably in the
bathroom and/or washroom.
(carbon
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concentration in the room. It
This sensor measures the relative humidity in the room. The sensor
translates this relative humidity 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 with 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 RF-PIR 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.
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.
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