Swegon CASA R3 Smart Guide
R3_d_EN-t
Swegon Home Solutions
CASA®R3 Smart
Installation, commissioning and maintenance instruction
R3.051016
Swegon reserves the right to alter specifications.www.swegonhomesolutions.com
Installation, operation and maintenance instructions
for design engineers, installation engineers and service personnel
Contents
2
Important information ............................................. 3
1. General description............................................... 4
1.1 Enclosure .........................................................................4
1.2 Fans.................................................................................4
1.3 Filter ................................................................................4
1.4 Heat exchanger................................................................4
1.5 Temperature ....................................................................4
1.6 Protective safety functions ...............................................4
2. Installation............................................................. 6
2.1 Ventilation unit’s installation site ......................................6
2.1.1 Wall mounting..............................................................6
2.1.2 Ceiling mounting..........................................................6
2.1.3 Swegon CASA cooker hood directly connected to the
ventilation unit.................................................................7
2.1.4 Swegon CASA cooker hood separated from the
ventilation unit.................................................................8
2.2 Condensate discharge......................................................8
2.3 Ducts...............................................................................8
2.3.1 Commissioning the bypass for the kitchen ....................8
2.4 Sealing around duct penetration collars ...........................9
2.5 Electric and control cables..............................................10
2.6 Installation of the Smart control panel............................11
3. Commissioning.................................................... 12
3.1 To set the airflows..........................................................12
3.1.1 Setting the fan speeds ................................................12
3.2 Smart functions .............................................................12
3.2.1 Selection of Smart functions .......................................13
3.2.2 Automatic Home/Away/Boost system..........................13
3.2.3 Automatic humidity system.........................................13
3.2.4 Automatic air quality system .......................................13
3.2.5 Cooker hood function.................................................13
3.3 Sensor ...........................................................................14
3.4 Control functions with optional items of equipment ......14
3.5 Remote supervision (DDC)..............................................14
3.6 Damper motors..............................................................15
3.7 Re-heater (not Econo) ....................................................15
3.8 Anti-freeze protection....................................................15
3.9 Restoring factory settings...............................................15
3.10 To change the service code ..........................................15
3.11 Use..............................................................................15
4. Service.................................................................. 16
4.1 Service reminder ............................................................16
4.2 To open the ventilation unit ...........................................16
4.3 Filters.............................................................................16
4.4 Heat exchanger..............................................................16
4.5 Fans...............................................................................16
4.6 Other servicing...............................................................16
5. Alarms and troubleshooting.............................. 18
5.1 Alarm ............................................................................18
5.2 Troubleshooting.............................................................18
6. List of components ............................................. 20
7. Technical data...................................................... 21
7.1Fan outputs(EN 13141-4)................................................21
7.2Outputs of the components............................................21
7.3 Acoustic data.................................................................22
7.4 Electrical wiring diagram................................................23
7.4.1 Ventilation unit ...........................................................23
7.4.2 R3, CASA Jazz cooker hood and control panel............23
7.4.3 Control functions with accessories ..............................24
7.4.4 Supervision (DDC).......................................................25
7.5 Control diagram ............................................................26
7.6 Dimensions....................................................................27
7.7 Weights .........................................................................27
7.8 Ventilation unit codes ....................................................27
7.9 Accessories for installation .............................................27
8. Commissioning form........................................... 28
Warranty conditions ............................................... 29
EC Declaration of Conformity ................................ 30
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Important information
Qualified personnel only
Only qualified personnel should carry out in-
stallation, configuration and commissioning.
Standards and requirements
The pertinent national standards and regula-
tions dealing with installation, configuration
and commissioning must be followed if the
equipment is to operate correctly.
At the www.swegonhomesolutions.com ad-
dress (Toolbox > Find PDF) you will find the
document “Project planning instructions for
ventilation”, in which power supply, sound,
airflows and duct system requirements are
presented.
Measurement and electrical work
If you carry out voltage tests, measure the
electrical insulation resistance at various
points or perform other remedial meas-
ures that could damage sensitive electronic
equipment, you must first isolate the ventila-
tion unit from the electrical supply grid.
Surge protection
Swegon recommends that all ventilation units
equipped with Smart automatic control be
equipped with a surge protection device.
Earth fault circuit breaker
It is not certain that an earth fault circuit
breaker will operate faultlessly in combi-
nation with the ventilation unit, since the
unit's regulation and control equipment can
cause leakage currents. Comply with local
electrical safety regulations when you install
electrical equipment.
To open the ventilation unit for service
Always ensure that the ventilation unit’s
power supply has been isolated before you
open the inspection door! Wait a few min-
utes before you open the inspection door
on the ventilation unit so that the fans have
time to stop and air heaters, if fitted, have
time to cool down.
There are no components inside the electri-
cal equipment cabinet that can be serviced
by the user. Leave the servicing or these
components to service personnel. Do not
restart the ventilation unit before you’ve
identified the cause of the fault and service
personnel have serviced the ventilation unit.
Drying laundry
A tumbler dryer of extract air type or a dry-
ing cabinet must not be connected to the
system due to the high moisture content in
the air it discharges. However, we recom-
mend the use of a condensing tumbler dryer
without duct connection.
Commissioning
Do not commission the ventilation unit until
all carpentry work that produces large quan-
tities of sanding dust or other impurities has
been completed.
The duct connection spigots of the ventila-
tion unit must be covered by lids while the
unit is being transported, kept in storage
and mounted at its final location.
Make sure that the ventilation unit, filters
and ducts are clean and that there are no
loose objects in them before you commis-
sion the ventilation system.
Condensation
The surface temperature of the ventilation
unit can drop down to 12 °C during periods
of frost and depending on the moisture con-
tent of the air surrounding the unit, moisture
may condense on the surface. Consequently,
condensation should be taken into account
when choosing furnishings that are to be
installed in the vicinity of the ventilation unit.
NOTE! The manual’s original language is Finnish.
!
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1. General Description
The most important function of the ventilation system
is to ensure clean and fresh indoor air and to remove
moisture. The air in the home should be changed at
a continuous and sufficient rate to ensure a pleasant
indoor climate and avoid damage to building elements
caused by dampness. The ventilation unit should be
stopped only while service work is in progress.
1.1 Enclosure
The ventilation unit’s enclosure class is IP 34 when the
inspection door is closed.
1.2 Fans
The Swegon CASA R3 is equipped with energy-efficient
fans with EC motors, advantageous in that their speed
is variably controllable and their efficiency is high even
when they operate in the lower speed range. The power
supply and control cables of the fans have quick-fit con-
nectors making the fans easily removable from the unit,
if required.
The fans can be controlled in four operating modes
from a Smart control panel or in three operating modes
from a compatible Swegon CASA cooker hood:
• Boost = A large airflow is used when the ventila-
tion requirement increases, e.g. for cooking, taking a
sauna, showering or drying laundry.
• Home = Normal airflow. Guarantees that there is
sufficient fresh indoor air in the home, and that the
building construction is at its best.
• Away = Low airflow. Reduces power consumption
when the ventilation requirement in the home is
small.
• Travelling = Very low air flow and lower supply air
temperature. Used when no one is present in the
home. (Can only be selected from a Smart control
panel.)
The unit’s weekly timer has four programs that can
switch in the various fan modes at the preset times.
On the unit with electric reheating, you can also select
the required temperature of the supply air. Even when
the ventilation unit is being controlled with the weekly
timer, it is always possible to change the fan mode from
a control panel or a cooker hood.
You can select an airflow boost time of 30, 60 or 120
minutes or continuous boost from a Smart control pan-
el. When the unit is controlled from a cooker hood, the
fan’s airflow boost time is 60 minutes. You can select a
damper open time of 30, 60 or 120 minutes.
1.3 Filter
The ventilation unit has class F7 fine filters for the sup-
ply air and the extract air.
1.4 Heat exchanger
The ventilation unit is equipped with a rotary heat
exchanger that consists of a rotor whose aluminium
fins form a large number of ducts through which the
air flow passes. During the heating season, heat that is
stored in the ducts on the extract air side is emitted to
the cold air on the supply air side. The heat exchanger is
motor driven.
1.5 Temperature
The user sets the required value for minimum supply
air temperature, and the ventilation unit then strives to
reach this temperature if possible. Swegon recommends
that the supply air temperature is set between 15–20 °C
and the factory setting is 17 °C, which is sufficient for
draught-free ventilation. The supply air temperature
should be 3–4 °C lower than the room temperature, so
that the supply air mixes fully with the room air.
Remember the following when setting the supply air
temperature:
• A high temperature setting will also increase the
ventilation unit’s power consumption.
• A low temperature setting, for example, 14 °C, can
cause condensation to collect in the system.
• The ventilation unit cannot cool the supply air with-
out an air cooler (duct coil), which is available as an
accessory.
R3’s intelligent summer function helps to maintain the
home’s indoor air comfort even during hot summer
days. Very economical comfort coolness can be pro-
duced almost free of charge by utilising the difference
between indoor and outdoor temperatures and the
heat exchanger intelligently. The heat exchanger takes
care of the cool indoor air during hot summer days and
cools the incoming outdoor air. At night the air passes
the heat exchanger and the home is cooled with fresh
outdoor air. This is managed by an advanced automatic
system.
1.6 Protective functions
The heat exchanger’s anti-freeze protection
R3’s reliable defrosting function guarantees continuous
and balanced ventilation in the home even during ex-
treme conditions. If there is a risk of the heat exchanger
in the unit freezing, the speed of the fans is changed
and the heated extract air prevents freezing inside the
heat exchanger.
The fans’ thermal overload protection
The fans have thermal overload cut outs, which stop
them if the temperature rises too high. The controller
also stops the fans if a serious malfunction occurs in the
ventilation unit. The protective function resets itself au-
tomatically when the temperature drops or the malfunc-
tion has been remedied.
Electric air heater
An automatic thermal overload cut-out switches off the
air heater if a fault arises. This protective device auto-
matically resets itself when the air heater has cooled
down.
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The overheating protection that requires manual
resetting can be reset by pressing a button located
inside the ventilation unit. The location of the button
is marked in the illustration below. When you press
the reset buttons and feel a click, the overtempera-
ture protection (thermal overload cut out) has then
been reset.
Temperature sensors
If a sensor fault is detected, the ventilation unit enters
restricted mode to prevent damage to the ventila-
tion unit. The functions related to the current sen-
sor in question are deactivated and the ventilation
unit works as well as possible. The ventilation unit’s
function returns to normal once the fault has been
corrected.
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2. Installation
2.1 Ventilation unit installation site
The temperature in the space where the unit will be
installed must be more than +10 °C. The ventilation unit
can be installed in a machine room, laundry room, store
room, etc.
The ventilation unit can also be installed in the kitchen
like a wall cabinet above the cooker and a Swegon
CASA Jazz cooker hood can be mounted directly to the
unit, i.e. connected to the duct connection spigot under
the ventilation unit.
The ventilation unit should not be secured to a wall that bor-
ders to a living room or a bedroom due to the risk of noise.
During installation, arrange electric and control cables to
make them easily accessible.
The ventilation unit can be mounted either on the wall
with a wall mounting bracket included in the supply or
on the ceiling with a ceiling mounting frame which is
available as an optional extra.
The unit should be mounted as near as possible to a wall
or ceiling. The space between the ventilation unit and the
wall/ceiling must be insulated to prevent the transmission
of sound through the wall behind the unit to the adja-
cent room.
2.1.1 Wall mounting
The wall mounting bracket is supplied together with the unit.
If the wall is composed of vertical studs and wall boards,
the wall must be reinforced with horizontal studs that
will support the weight of the unit. Swegon also recom-
mends that the wall be insulated with mineral wool or
similar insulation for preventing sound from propagat-
ing to other rooms.
1
2
1.Horizontal stud for the ventilation
unit’s mounting bracket
2.Acoustic insulation
1
23
1.Insulated wall
2.Horizontal stud
3.Wall mounting
bracket
Wall mounting bracket’s dimensions
If the wall is composed of vertical studs and wall boards,
the wall must be reinforced with horizontal studs that
will support the weight of the unit. Swegon also recom-
mends that the wall be insulated with mineral wool or
similar insulation for preventing sound from propagat-
ing to other rooms.
Screw the wall mounting firmly in horizontal posi-
tion onto the wall where a wall stud will support the
weight of the unit. Lift up the ventilation unit onto the
wall mounting bracket so that the ears on the bracket
engage in the corresponding notches at the top on the
backside of the unit.
The ventilation unit’s inspection door and heat ex-
changer can be removed to make it easier to lift the
unit. The fans can also be removed if necessary. See the
”Servicing” Section.
2.1.2 Ceiling mounting
The ventilation unit can also be mounted in a ceil-
ing mounting frame (available as an accessory) on the
ceiling.
Fasten the ceiling mounting frame in ceiling anchor
sleeves with four M8 threaded rods. The length of rods
must be adjusted so that they will be positioned approx.
15-20 mm under the inner surface of the ceiling mount-
ing frame. Install the ceiling mounting frame approx.
35-55 mm below a suspended ceiling.
The ceiling mounting frame must not be used as
part of a support structure for the ducts; the duct
support must be sufficient even without the support ef-
fect provided by the ceiling mounting frame.
Fasten the locking hooks in mounting openings on the
ventilation unit’s top side by means of tension rivets.
Position the hooks so that the sharp point is facing the
rear side of the ventilation unit.
The hooks must absolutely not be secured with riv-
ets directly above the ventilation unit.
The points of the hooks face the rear part of the ventilation
unit and they are to be slipped into the unit’s notches before
you secure them with rivets.
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Hang the ventilation unit up in the mounting frame
so that the rear of the unit engages in the suspension
plate. Lift the ventilation unit up against the ceiling
mounting frame so that the locking hooks on both sides
engage into position. The unit is firmly secured if the
screw heads on the front part of the ceiling mounting
frame return to their original positions. The ventilation
unit can then be secured into position by screwing in
the locking screws to their end positions.
2.1.3 Swegon CASA cooker hood directly
connected to the ventilation unit
The Swegon CASA Jazz cooker hood can be mounted
directly against the ventilation unit, and in this case
the extract air duct should be connected directly to the
duct connection on the bottom of the unit. Secure the
cooker hood to the ventilation unit using the screws
supplied. The cooker hood is available in right-hand and
left-hand versions depending on the ventilation unit’s
model.
The ventilation unit can be controlled from the cooker
hood control panel.
The electric and control cables as well as the connection
for the cooker hood’s extract air are located under the
cover plates in the bottom of the unit.
1
2
3
1.Suspension plate
2.Locking hooks
3.Lock screw
115 m m
The fan’s
mounting screws
The kitchen airflow from
the cooker hood during
operation in the boosted
flow mode
Acoustic insulation
The kitchen’s general
ventilation via extract air
register
∅125 mm
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2.2 Condensate discharge
As a rule, no condensate discharge connection is
needed under dry ambient conditions and in combina-
tion with a rotary heat exchanger. A certain humidity
load exists in homes and a condensate discharge line
should be connected to the ventilation unit, if consider-
able moisture is produced in the home.
Connect the discharge hose to the ventilation unit’s
condensate discharge connection (3/8” male threads).
The condensate must be channelled to a floor drain,
the water trap of a sink or the equivalent by means of
a tube or a pipe having an inner diameter of at least 12
mm. The tube must not be connected directly to the
sewer. The tube must not have a second water trap or
be run horizontally. The damming height of the water
trap should be at least 100 mm.
The condensate discharge connection is plugged
from the outside of the ventilation unit.Remove the
plug when you begin using the condensate discharge
connection. Check that the condensate discharge outlet
is not clogged and check its outflow by pouring water
on the bottom of the ventilation unit. The condensate
discharge connection is located on the rear of the unit
under the rotary heat exchanger.
The hose for removing condensed water is available
as an accessory (part number 502103). The hose has a
ready-made loop that serves as a water trap.
There is a metal water trap available as an accessory
(UVL).
2.3 Ducts
Install the ventilation ducts, sound attenuators, sup-
ply air diffusers, air intake grilles and exhaust air ducts
as shown in the ventilation drawings. To prevent the
propagation of sound, do not install the ducts directly
against structural building elements.
Insulate the ventilation ducts in order to reduce loss
of heat or cooling energy and to prevent water from
condensing on surfaces. In addition, it is advisable to
insulate the ducts to prevent the spread of fire. It is of
greatest importance to insulate cold ducts without
gaps in the insulation, so that moisture cannot
condense.
2.3.1 Commissioning the bypass for the kitchen
The ventilation unit has extra duct connections for
extract air from the cooker hood on its top and bottom
sides. The extract air from the cooker hood flows di-
rectly out through the unit’s extract air fan and does not
2.1.4 Swegon CASA cooker hood separated from
the ventilation unit
The compatible Swegon CASA cooker hood can be
mounted separately from the ventilation unit, and in
that case the extract air is conveyed from the cooker
hood to an extra duct connection on the upper side of
the unit. The duct between the cooker hood and the
ventilation unit must be installed in such a way that
makes it possible to clean it.
The ventilation unit can be controlled from the cooker
hood control panel.
∅100 mm
∅125 mm
∅125 mm
The kitchen’s general
ventilation via extract
air register
The kitchen airflow from
the cooker hood during
operation in the boosted
flow mode
Acoustic insulation
Important
The 100 mm duct connection from the ven-
tilation unit should be fitted with a taper
piece for transition to 125 mm as near to
the unit as possible.
!!
Important
Check whether the ventilation unit has
been supplied in the right-hand or left-
hand version to make certain that you are
connecting the ventilation ducts to the
correct duct connection spigots on the unit.
Check the ventilation plans to make sure
that the duct connections are correctly in-
stalled. See also the dimensional drawings
in the Section entitled: “Technical data”.
!!
200 mm
3/8" male thread
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described in the Section entitled: ”Service”.
• Open the ventilation unit’s inspection door and re-
move the heat exchanger guard plates. Withdraw the
heat exchanger from the unit.
• Remove the screws of the guard plate that covers the
duct connection.
• Pull out the cover together with its insulation.
Push the heat exchanger back into the unit, secure the
guard plate with screws at its position and close the
inspection door.
2.4 To seal around duct penetration collars
It is important to the preserve the tightness of the
vapour barrier at the duct penetration collars. We
recommend the use of a mounting frame designed for
the ventilation unit (accessory, PR085YP) for sealing the
vapour barrier in the loft ceiling beams.
Cut up the openings with approx. 10 mm smaller diam-
eter than that of the ducts. Secure the mounting frame
in the ceiling with screws through the holes on the
sides. The plastic film of the vapour barrier should either
be stretched and fastened between the mounting frame
and the structural element of the building, or be taped
tightly against the mounting frame.
The thickness of the insulation and the nature of the
surface layer of the ventilation ducts vary depending on
insulation material, climate zone and national standards
in force. For this reason, Swegon does not offer any rec-
ommendations for insulation thickness. Most manufac-
turers of insulation material offer calculation programs
for the calculation of sufficient and correct insulation.
In renovation projects, it is advisable to examine the
existing ducts to determine whether they are sufficiently
and correctly insulated. Insulating in the right way is
necessary for the ventilation unit to operate correctly. If
the ducts are uninsulated, even across a small area,
there is a high degree of risk of condensation and
indirect damage.
pass the heat exchanger. For this reason, the kichen’s
general ventilation must not take place via the cooker
hood. On delivery, both of the duct outlets that bypass
the heat exchanger are fitted with covers.
If the duct connection designed for bypass from the
kitchen is used, the duct between the cooker hood and
the unit must be installed in such a way that makes it
possible to clean it.
Dismantle the cover panel on the top of the venti-
lation unit
How to open the ventilation unit and remove the guard
plates are described in the section entitled: ”Service”.
• Open the ventilation unit’s inspection door and re-
move the guard plates in front of the heat exchanger.
• Remove the screws of the guard plate that covers the
duct connection.
• Pull out the cover together with its insulation.
• Secure the guard plates for the extract air fan and
the heat exchanger with screws at their positions and
close the inspection door. The duct connection spig-
ots are now ready for connection to ducting.
Dismantle the cover panel on the bottom of the
ventilation unit
How to open the ventilation unit as well as how to
remove the guard plates and heat exchanger are
Important
The bypass for a kitchen is intended for use
when the airflows from the cooker hood/
kitchen are boosted. The kitchen’s general
ventilation must take place via the extract
air duct. If the general ventilation takes
place continuously via the cooker hood, the
supply air and extract air flows through the
heat exchanger will be out of balance, and
this will lower the efficiency and impair
the ventilation unit’s anti-freeze protection
functions during the winter.
!!
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The maximum length of the modular cable in the system
is 40 metres. If the modular cable is lengthened within
some building element (such as a wall), the cable should
be lengthened in a ∅ 20 mm dia. tube as a precaution
in case the need should arise to replace it in the future.
When installing the unit, make sure that you provide
adequate access to the connector of each cable (loose
ones as well), e.g. for servicing and adjusting the unit, if
and when the need arises.
In multi-storey buildings, a control panel can be used as
a so-called hand-held micro terminal in conjunction with
service and installation work.
The connection of possible accessories is described in
the wiring diagram in the Section entitled: ”Technical
data”. The cables for accessories are not included in the
supply.
The supply air duct should be fitted with acoustic insula-
tion along the stretch between the unit duct outlet and
the sound attenuator, so that fan sound will not be
propagated out into the room.
In general, ventilation ducts should be insulated in the
following manner:
• Insulate outdoor air ducts run through warm spaces.
• Exhaust air ducts should always be insulated in ac-
cordance with national regulations. See separate pro-
ject planning instructions (for example Fire resistance
classification requirements).
• Insulate supply air ducts in cold spaces.
• Insulate extract air ducts in cold spaces.
• If the air inside the duct is colder than in the sur-
roundings; the insulation should be protected by a
vapour barrier.
2.5 Electric and control cables
A 1.5 m long cable with earthed plug-in contact is fitted
to the ventilation unit for measuring the voltage. The
cable extends from the top of the unit. The mains plug
serves as the ventilation unit’s main switch and it should
be connected to an electric socket at an easily acces-
sible spot. For power required, see the Section entitled:
“Technical data”.
There is a modular cable for control on top of the
ventilation unit. There is a modular cable for the cooker
hood located under the cover plate at the bottom of the
ventilation unit.
Important
Even small gaps in the insulation impair the
sound attenuation and bring about a risk of
condensation and consequential damages.
!!
Important
Before commissioning the ventilation sys-
tem, check that the ventilation unit, filters,
condensation drain and ducts are clean and
that there are no loose objects inside them.
The ventilation ducts should be cleaned
regularly and always when the home is
renovated.
!!
Important
It is absolutely forbidden to operate the
ventilation system during the construction
period or if dust-raising work is carried out.
Before installing the unit, the ducts should
be blanked off with covers to prevent the
entry of impurities.
!!
Important
If any further electrical wiring is required,
only a qualified electrician shall be allowed
to carry out this work.
The electric and control cables are located
on the upper side of the ventilation unit.
Make sure that the electric cable can
be connected to a wall outlet without
obstruction.
!!
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2.6 Installation of the Smart control panel
A maximum of two Smart control panels can be con-
nected to the ventilation unit, with different mutual ID
numbers. A 20 metre long modular cable is included to
connect the control panel. Run the cable to the desired
place where the panel will be mounted. A Smart control
panel can be mounted up to 40 metres from the unit
(using 2 x 20 metre long modular cables).
The front panel on the Smart control panel is released
using a screwdriver to push the retaining clips through
the holes on either side.
If several control panels are connected in chain, the
middle panel’s bus termination is moved to the “Open”
position. The jumpers do not need to be adjusted if only
one control panel is used.
Bus termination: OpenBus termination: Terminated
The modular cable connected to any outlet socket on
the panel.
Finally, refit the front panel.
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The ventilation system’s settings in connection with
commissioning and servicing are made from the pass-
word-protected “Settings” menu on a Smart control
panel. To open the menu, enter code 1234. (The code
can be changed). In conjunction with commissioning,
you always need to set at least the airflow and carry out
any adjustments to the Smart sensor if fitted.
3.1 To set the airflows
For estimated values for setting the airflows, use the
sizing curves in the Section entitled: ”Technical data”. A
qualified person should set the ventilation unit’s and the
ventilation equipment’s airflows using appropriate meas-
urement equipment.
As an initial value for ventilation planning, you can use
the ventilation value 0.5 times the volume of the build-
ing per hour + 6 l/s supply air per person, when the unit
is operating in the Home mode. (Initial values can vary
in different countries.)
In new homes, there is still construction moisture and
the house initially requires higher ventilation in order to
remove the moisture from the building. A great deal of
moisture in the home manifest itself in the form of mois-
ture on cold surfaces. We recommend that in new houses
to use higher volumes of air at first to remove moisture.
All the fan modes must be preset so that the venti-
lation unit will operate correctly. Fill in your entered
settings in the commissioning report.
It is recommended in order to improve the efficiency of
the ventilation to use an automatic moisture sensor or
to actively use the ventilation unit’s boost speed, if there
is a sauna, pool or equivalent moisture producer in the
home.
3. Commissioning
3.1.1 Setting the fan speeds
Before you start to adjust the fan speeds, ensure that
the filters are clean and that there are no foreign objects
or debris inside the ventilation unit.
Choose commissioning mode from the “Fan speeds”
menu, as the ventilation fans then run at the speed be-
ing set. In commissioning mode, all functions that affect
the speed of the ventilation unit’s fans, such as the anti-
freeze protection, are disconnected.
Set the fan speeds for all operating modes (Home/Away/
Boost) and the largest automatic boost, if you wish to
limit the Smart functions.
Fill in your entered settings in the commissioning report.
3.2 Smart functions
Setting of Smart functions must be performed.
Settings
Fan speeds
Preheater
Re-heater
Input settings
Smart functions
Fireplace function
Smart settings
Summer mode
Supply air limit
DDC control
Damper actuators
Sensors
Alarms
Reset factory settings
Change service code
Fan speeds
Commissioning mode
Away (supply)
Away (exhaust)
Home (supply)
Home (exhaust)
Boost (supply)
Boost (exhaust)
Max Smart boost (supply)
Max Smart boost (exhaust)
30%
30%
50%
50%
80%
80%
100%
100%
Important
Set the fan speeds in accordance with na-
tional regulations when you commission
the ventilation system. The system should
be commissioned by a qualified person,
and the airflows must not be changed on
one’s own responsibility, since doing so
could disrupt the way the ventilation sys-
tem operates.
!!
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The value ”RH now”, the current moisture level, is
shown on the settings menu.
The automatic humidity system measures the daily
average value in the extract air and compares this with
the current value. The ventilation starts to be boosted
variably when the humidity has risen as much as the
Boost limit value.
When the sauna is working, the ventilation is boosted
with the set value, through the activation of the auto-
matic sauna limitation. This function prevents variations
in the fan speeds while the sauna is working.
3.2.4 Automatic air quality control
The function is available only on models equipped with
automatic air quality. Automatic air quality boosts the
ventilation variably according to the indoor air quality.
This function should always be set in conjunction with
commissioning.
The settings menu shows the value “AQ now” the
current air quality level. The function is set by specifying
the boost limits where you want the ventilation boost
to start and the value at which you want the ventilation
unit to reach maximum boost. Appropriate values can
be established based on the “AQ now” value shown in
the menu.
If it seems that the ventilation system reacts too quickly
to changes in the air quality level, you can increase the
filtering time.
3.2.5 Cooker hood function
The cooker hood function balances the ventilation when
the cooker fan is used to help prevent excessive nega-
tive pressure and improves fume extraction capability
of the cooker hood. The function starts automatically
when the damper in a compatible cooker hood is
opened and runs until the damper is closed.
3.2.1 Selection of Smart functions
Select which functions are to be available from the
“Smart functions” menu. When boost is selected,
boosting is used on all connected sensors.
3.2.2 Automatic Home/Away/Boost system
The function is available only on models equipped with
a carbon dioxide sensor. The automatic control system
controls the ventilation airflow variably according to the
carbon dioxide level in the home.
This function should always be set in conjunction with
commissioning.
The settings menu shows the value ”A+now” the cur-
rent level of carbon dioxide. The function is set by defin-
ing the limits values Home and Away. A suitable Home
limit value can be determined by reading the ”A+now”
value from the menu when a normal number of people
are in the home. Similarly, you can determine the Away
limit value by reading the “A+ now” value when the
property has been empty for several hours.
3.2.3 Automatic humidity system
The function is available only on models equipped with
a humidity sensor. The function boosts the ventilation
according to the normal moisture load caused by a
person, for example, when a shower adds extra moistu-
re to the residence. If the relative humidity of residence
rises above 60% over a longer period, the set airflows
must be increased, and the reason for the high level of
moisture investigated.
Smart functions
Fireplace function
Travelling
Cooker hood function
Central vacuum function
Boost
Summer mode boost
Heating boost
Shut down
Auto Home/Away/Boost
A+ now 950 ppm
Home limit
Away limit
Filter time
900 ppm
600 ppm
1 min
Auto humidity control
RH now 30 %
Boost limit
Full boost limit
Sauna function
5 % + RH
30 % + RH
Sauna boost 5 %
Auto Air Quality control
AQ now 620 ppm
Boost limit
Full boost limit
Filter time
800 ppm
1400 ppm
1 min
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3.3 Sensor
Select which sensor you wish to use to measure the
room air temperature.
The menu shows the temperature measured by the se-
lected sensor. If, for example, the temperature measured
by the sensor differs from the value from a temperature
sensor installed in a different location in the same room,
the temperature sensor can be calibrated by changing
the room air fine tuning value.
3.4 Control functions with optional items
of equipment
If the unit is to be controlled with accessories, set the
switch input for this. (See the wiring diagram in the
section : “Technical data” / “Control functions with
accessories”.)
There are three switch inputs on the ventilation unit’s
PCB that need to be configured. Specify which switch is
connected to each input. The options are input signals
from the following external switches: fireplace, travel-
ling, central vacuum, cooker hood, boost and filter
guard. You can change the relative priority of the func-
tions if necessary.
3.5 Remote supervision (DDC)
If the ventilation unit is to be operated remotely, choose
to put remote control into service and set the desired
temperature reductions. If the ventilation unit’s fan
control is handled by DDC, you cannot change the oper-
ating mode from the Smart control panel. See a detailed
description of remote control in the section “Technical
data” / “Supervision (DDC)”.
Variable control occurs between the voltages 2 V - 5 V
- 8 V. The ventilation then switches variably between op-
erating modes Away - Home - Boost. Otherwise, control
is performed according to the normal DDC control.
Sensors
Room air
Room air temperature
Room air fine tuning 0,0°C
22,2°C
UP1
Input settings
Input 1
Priority
Input 2
Priority
1
Hood
1
Fireplace
Input 3 No selected
Choose to permit a speed reduction of the extract air
fan when using a cooker hood whose extract air does
not pass through the ventilation unit.
Enable the cooker hood function and set the Home
mode’s compensation value so that the airflows are kept
in balance. Fine tune the boost compensation value too
if necessary.
Cooker hood function
Run time 30 min
Home state Compensation
Boost state Compensation cor.
Allow exhaust fan slowdown
20%
0%
Important
The ventilation unit must be equipped with
either an internal or external preheater if
you want to use the ventilation’s balancing
functions (fireplace function, cooker hood
function, central vacuum cleaner) at tempe-
ratures below -10 °C.
!!
Important
Smart measurements: CO2, RH ja VOC.
The absolute values in the measurement
result does not affect how well the control
works.
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3.6 Damper motors
If external duct damper motors are used, choose to en-
able control. The damper is then regulated to the open
position when the ventilation unit is operating.
3.7 Re-heater (not Econo)
Here you select whether you wish to use the electric air
heater for re-heating to heat the supply air when the
heat exchanger’s power is not sufficient for reaching the
preset supply air temperature.
3.8 Anti-frost protection
Anti-frost protection works automatically.
3.9 Restore factory settings
Resets all settings made from the control panel, with the
exception of the fan speeds.
3.10 Change the service code
This menu is used to change the code to access the set-
ting menu.
3.11 Use
Issues with reference to the usage of the ventilation
system are dealt with in the instructions for use supplied
with the unit.
Damper actuators
Damper actuators
Enter code
Accept
[ 12 3 4 ]
Re-heater
In use
DDC control
Fan control
Temperature control
Emergency stop
Temperature drop (away)
Temperature drop (travelling)
Stepless control
2°C
0°C
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4.1 Service reminder
The service reminder is activated with preset time inter-
vals and the symbol is displayed on the control panel’s
screen. As a factory setting, the service reminder is not
in operation. It can be put into operation under the
main menu item “Diagnostics”/”Service reminder”. The
recommended service interval for the ventilation unit is
six months.
When servicing has been performed, the service remind-
er is reset from “Alarm” in the main menu.
4.2 To open the ventilation unit
Before you begin any service work, isolate the power
supply voltage to the ventilation unit by pulling out its
electric plug from the wall socket. Wait a few minutes
before you open the inspection door of the ventilation
unit so that the fans have time to stop and possible air
heaters have time to cool down.
The lock bolts of the inspection doors are located in
the upper and lower edge of the door under the cover
plates. The cover plates can be removed by pressing
them in and sliding them as shown in the image below.
Open the inspection door by turning the two lock bolts
with a screw driver for slotted screw heads. The door
can then be carefully lifted off when the lock bolts have
been opened.
4.3 Filter
The filters should be replaced at least every six months.
The filters may need to be cleaned or replaced more often
in homes where there is considerable dust or if there are
many impurities in the outdoor air.
The ventilation unit must not be operated without filters.
Use only filters recommended by Swegon in the ventila-
tion unit. This is important, as filters with exactly the same
appearance and size can have very different pressure losses
and filter capacity. If an incorrect filter is used, it is not cer-
tain that the ventilation unit will work as designed. Check
in the list of components that you have selected correct
filters.
4.4 Heat exchanger
You should check the condition of the heat exchanger
whenever you service the unit.
You need to check that the heat exchanger has not
frozen to the air handling unit’s frame during cold
4. Service spells. When necessary the air handling unit’s inspection
doors should be held open for a while before the heat
exchanger is removed from the unit, so that the tem-
peratures have time to equalize and to prevent damage
to the seals.
Remove the screws of the heat exchanger’s guard plate
and pull the heat exchanger out to inspect it. If you
want to withdraw heat exchanger completely out of the
unit, you must also disconnect the quick-fit connector.
The contact is located under the extract air filter. When
you mount the heat exchanger back in the unit, be
sure to reconnect the connector and arrange the cable
where it won’t become worn by moving parts in the
rotary heat exchanger.
There is an opening in the front plate of the heat
exchanger through which you can see the drive belt.
Carefully rotate the heat exchanger rotor one revolution
to inspect the condition of the drive belt. Do not dam-
age the heat exchanger fins.
Check the condition of the brushes along the rotor
periphery. Replace the brushes if they are worn.
Make sure that the passages through the heat exchang-
er rotor are not clogged and clean them e.g. with run-
ning warm water if required. Never use cleaning agents.
Inside the heat exchanger enclosure there is an electric
motor that must not be exposed to dampness. The pas-
sages of the heat exchanger should be dry before
you reinstall the heat exchanger in the unit.
4.5 Fans
The ventilation unit’s fans must be checked at least
every two years. Withdraw the fans from the unit for
inspection. You can remove the fan from the unit by
pulling them straight outwards. If you pull the fans
out completely, you must also disconnect the quick-fit
connector.
In particular, if the cooker hood is mounted directly on
the ventilation unit grease and dust can accumulate on
the extract air fan impeller and on the walls of the venti-
lation unit’s fan chamber. If dirt builds up in the fans this
can affect the functionality of the ventilation unit.
If necessary, clean with a soft brush. Be careful not to
dislocate the impeller balancing weights. If significant
amounts of dirt collect on the fan impeller cleaning
should be left to a professional.
4.6 Other servicing
Clean the inner surfaces of the ventilation unit by
vacuum cleaning or with a damp cloth, if needed.
Check that the condensate discharge outlet is not
clogged and check its outflow by pouring water on
the bottom of the ventilation unit. The condensate
discharge connection is located on the rear of the unit
under the rotary heat exchanger.
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Important
The ventilation unit must not be operated
without filters! Use only filters recom-
mended by Swegon in the ventilation unit.
Find the correct filter in the Section enti-
tled: ”Technical data”.
!!
1.Supply air filter
2.Extract air filter
3.Heat exchanger guard plate
4.Guard plate
1
2
3
4
4
1.Extract air fan
2.Supply air fan
3.Heat exchanger
4.Heat exchanger drive belt
1
2
3
4
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5. Alarms and Troubleshooting
5.1. Alarms
Any disruptions to the function of the ventilation unit
are indicated by symbols on the upper row of the base
display. If there is an active alarm in the system, the
screen leaves its standby mode and does not enter
standby mode again as long as the alarm is active. The
symbol for an active alarm is . The condition that
has caused the alarm is shown by the “Alarm” item
on the main menu. A so-called info-alarm remains on
the screen when the active fault condition ceases.
The Info alarm can be reset from “Alarm” on the main
menu.
5.2 Troubleshooting
A ventilation system is a unified whole composed of
several system components all of which influence how
the system operates. A malfunction in ventilation perfor-
mance could be caused by any component of the ventila-
tion system or by the way the system has been installed.
If during the ventilation unit’s warranty period (2 years)
after a check (see the enclosed check list) there are func-
tional disruptions in the ventilation unit, you can register
these using the response form at the address www.
casahelp.fi. There are also instructions, service videos and
frequently asked questions on the same website.
If a problem or a fault occurs on the ventilation system
after the warranty period (2 years), contact our network
of authorised service companies on www.swegonhome-
solutions.com, your real estate company’s service divi-
sion or another service company that is fully conversant
with ventilation repairs.
Status Alarms Action
T1...T8 sensor fault Contact a service company. The ventilation unit runs in a restricted operating
mode.
Reheater error Check the overheating protection. Contact a service company.
Preheater error Check the overheating protection. Contact a service company.
Freeze risk water-heated air
heater
Ensure that the circulation pump in the waterborne heating system is running
and that the water supply to the ventilation unit’s heating coil is hot enough.
Fault supply air fan Contact a service company.
Fault extract air fan Contact a service company.
Contact fault Restart the ventilation unit. Contact the service company if the error persists.
External emergency stop/
fire alarm
The alarm clears automatically when the external emergency stop or the fire
alarm ceases. No info alarm remains afterwards.
Internal fault Restart the ventilation unit. Contact the service company if the error persists.
The ventilation unit runs in a restricted operating mode.
Service reminder Service the ventilation unit and acknowledge the service reminder.
Filter guard Replace the filter and reset the filter guard.
Important
Freeze protection function
Ice can form in the heat exchanger during
periods of cold weather if the extract air
is humid. A protective function then auto-
matically reduces the speed of the supply
air fan. Under such conditions, variations in
the fan speed are therefore normal.
Under such conditions, small amounts of
ice can form inside the ventilation unit.
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For users of the Swegon CASA ventilation unit
Thank you for your excellent choice of energy efficient ventilation for your home. Swegon designs, manufactures, mar-
kets and sells Swegon CASA ventilation units and cooker hoods. Swegon guarantees the functionality of the manufac-
tured units and grants a warranty for them. A ventilation system is a unified whole composed of several system compo-
nents all of which influence how the system operates. This check list is meant for use by specialists in the building trade
and for residents who suspect malfunctions in the ventilation.
Malfunctions in ventilation performance
A malfunction in ventilation performance could be caused by any component of the ventilation system or by the way the sys-
tem has been installed. Normal operation of the Swegon CASA ventilation unit is described in the user’s instructions supplied
with the unit on delivery. If malfunctions occur in the ventilation system, ensure the following with the help of a professional:
CHECK LIST
If the above-stated checks are not carried out and representatives for Swegon or an authorized service company disco-
ver inadequacies in them, the client is responsible for the costs for the service visit, even during the warranty period. If
a ventilation unit under warranty is still marred by functional disruptions after the checks, submit a contact request on
our web site www.casahelp.fi. If a problem or a fault occurs on the ventilation system after the warranty period (2 yea-
rs), contact our network of authorised service companies on www.swegonhomesolutions.se, your real estate company’s
service division or another service company that is fully conversant with ventilation repairs.
1) Make sure that the pipes have been insulated fully according to the instructions and that the insula-
tion reaches all the way up to the ventilation unit so that no uninsulated surface is visible.
-> Even a small gap in the insulation could cause among others condensation and acoustic problems.
2) Make sure that the pipes’ connections to the ventilation unit are tight and that the unit is installed horizontally.
-> If the connections have not been fitted correctly, condensation and acoustic problems could arise.
3) Make sure that the ventilation unit is equipped with Swegon’s original filters. This will ensure
pressure differentials and the filtration values that conform to the design level, enable the unit to
operate correctly and maintain a healthy indoor climate in the home. Make also sure that the filters
are clean and replace them when needed. Check also the fresh air grille and clean it if needed.
4) Check that there are no unnecessary objects or impurities inside the ventilation unit. At the same
time, make sure that the condensate drain in the bottom of the ventilation unit is not clogged by
impurities or insects. The condensate drainage function can be checked by pouring a few drops of
water on the bottom of the ventilation unit.
5) If the ventilation unit is equipped with electric air heaters, make sure that the excess temperature
cut-out switches have not tripped. The excess temperature cut-out can be manually reset by pres-
sing a button according to the user’s instructions.
6) Make sure that the ventilation unit’s inspection cover is closed and that it seals tightly along its enti-
re periphery against the unit casing.
7) Check that the airflow rate settings have been set according to the ventilation plan and that the
airflow rates to and from the ventilation unit’s air heater are in balance (the supply air flow must be
2–10 % less than the extract air flow).
8) Make sure that the fan speeds have been preset for all the operating modes (Away, Home, Boost).
If the fan speed settings do not deviate from the factory settings presented in the instructions, there
is reason to suspect inadequate commissioning/adjustments.
9) Make sure that a correctly recorded and approved measurement record is available.
Items to check
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6. List of components
9
10
11
2
2
4
5
6
3
7
8
12 1
1. Temperature sensors *
2. Fan (R Model): PEC119R
2. Fan (L Model): PEC119L
3. Reheating cassette (Model R): PR085REK
3. Reheating cassette (Model L): PR085LEK
4. EC circuit card: 603010
5. Door contact: 60542
6. Set of filters: PR085FS
7. Rotor package (R Model): RP85BR
7. Rotor package (L Model): RP85BL
8. Complete door with white front plate: DR85BRL1
9. Front plate of the front cover (white): PR085B6V
9. Front plate of the front cover (stainless): PR085B6R
10. Lock: 61954
10. Cover plate of the lock (white): 61371
11. Cover plate of the lock (black): 61372
12. Wall mounting bracket: 6010208
*) Temperature sensors:
• 750 mm, without connector (T1, outdoor air sensor), R Model: 604924
• 850 mm, without connector (T1, outdoor air sensor), L Model: 604925
• 750 mm, with connector (T3, extract air sensor), R Model: 604915
• 1,000 mm, with connector (T3, extract air sensor), L Model: 604916
• 300 mm, without connector (T4, supply air sensor): 604923
• 1,450 mm, with connector (T5, exhaust air sensor): 604919
Accessories
• Smart control panel: SC10
• Modular cable: PMK20
• Mounting frame with vapour barrier (R/L): PR085YP
• Condensate discharge tube: 502103
• Water trap: UVL
• Ceiling mounting frame (R): PR085RKA
Ceiling mounting frame (L): PR085LKA
• Replacement filter set of 2 filters F7: PR085FS
• Inspection door cover plate (white): PR085B6V
Inspection door cover plate (stainless steel):
PR085B6R
• Swegon CASA Jazz cooker hood for location below
the ventilation unit (stainless steel, white)
Other manuals for CASA R3 Smart
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