Page 1
Vallox
• 1.09.332E
• 10.4.2009
• Code 3520
© VALLOX
90
SUPPLY AND EXTRACT AIR VENTILATION
WITH HEAT RECOVERY
SE
CODE 3520
VTT certificate number
Direct current fan model
C326/05
MODELS:
VALLOX 90 SE R
VALLOX 90 SE L
DIGIT SED
ELECTRONIC CONTROLLER
WITH LCD DISPLAY
INSTRUCTIONS FOR USE AND MAINTENANCE
Page 2
CONTENTS
VALLOX 90 SE
EVERYDAY QUICK GUIDE
VALLOX 90 SE has been initially adjusted for normal circumstances in your home. Ventilation adjustment is needed mainly in the following circumstances:
• Taking a bath:
Boost ventilation in bathing and washing
facilities in order to ensure that the rooms
get dry as quickly as possible. It is advisable to have boosted ventilation on for 2 to 3
hours after taking a sauna bath, unless
there is an automatic adjustment based on
humidity content.
• Washing and drying clothes:
Boost ventilation in washing and drying
rooms during the activity, unless there is an
automatic adjustment based on humidity
content.
• Sleeping:
Ventilation in a bedroom has to be sufficient throughout the night. The level is correct when air does not smell fusty when
you enter the room in the morning. If the
carbon dioxide content of a room is monitored and ventilation is adjusted accordingly, air will always be fresh.
• Empty dwelling:
To save energy, ventilation can be adjusted
to the minimum level.
• Cooking:
If the ventilation unit is connected to a cooker hood, boost ventilation during cooking.
The most common way to abate cooking fumes is to have a separate
cooker hood.
NOTE!
Never switch ventilation off, because
ventilation keeps indoor air quality
uniform and removes gases and dust
emanating from the structures.
VALLOX 90 SE models
Code: 3520
Models
The letter L or R after the name of the unit indicates the handedness of the unit.
VALLOX 90 SE R
• With direct current fans
VALLOX 90 SE L
• With direct current fans
VTT certificate number
• Direct current fan model: C326/05
Pre-/post-heating radiator
• Preheating radiator electric, max. 900 W, standard
• Post-heating radiator electric, max. 900 W, standard
1. THREE QUESTIONS ABOUT VENTILATION
1.1. Why is air replaced in dwellings?................................................. p. 3
1.2. What are the characteristics of adequate ventilation?...................... p. 3
1.3. How much air is replaced? .......................................................... p. 3
2. INSTRUCTIONS FOR USE VALLOX 90 SE
2.1. Switching on .............................................................................. p. 4
2.2. Ventilation control ....................................................................... p. 4
2.3. Ventilation control with control panel ............................................. p. 4
2.4. Ventilation control with carbon dioxide sensor ................................ p. 5
2.5 Ventilation control with humidity sensor.......................................... p. 5
2.6. Ventilation control with voltage and current signal........................... p. 5
2.7. Ventilation control with remote monitoring system............................ p. 5
2.8. Post-heating................................................................................ p. 5
2.9. Supply air constant temperature control ......................................... p. 6
2.10. Supply air cascade control .......................................................... p. 6
2.11. Heat recovery bypass function ..................................................... p. 6
2.12. Heat recovery defrost function ..................................................... p. 6
2.13. Maintenance reminder................................................................ p. 6
2.14. Fireplace switch / boosting ......................................................... p. 7
2.15. Fault signal relay........................................................................ p. 7
2.16. Air filtration ............................................................................... p. 7
3. CONTROL PANEL
3.1. Instructions for use....................................................................... p. 8
3.2. Operating menu ......................................................................... p. 8
3.3. Settings menu............................................................................. p. 9
3.4. Week clock control ..................................................................... p. 11
3.5. Factory settings........................................................................... p. 11
4. MAINTENANCE INSTRUCTIONS
4.1. Before starting maintenance operations ......................................... p. 12
4.2. Filters ........................................................................................ p. 12
4.3. Fans.......................................................................................... p. 13
4.4. Condensing water....................................................................... p. 13
5. TROUBLESHOOTING ....................................................................... p. 14
2
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VALLOX 90 SE
THREE QUESTIONS ABOUT VENTILATION
1. THREE QUESTIONS ABOUT VENTILATION
1.1. Why is air replaced in dwellings?
Good ventilation promotes healthy living for both residents and the building. Air in a dwelling needs to
be replaced in order to remove humidity brought about by living as well as impurities
emanating from structures and human bodies. Impurities of indoor air include carbon
dioxide, formaldehyde, radon and other gases as well as dust.
Mechanical ventilation is needed in order to be able to adjust air circulation as needed by
the residents. In a tightly sealed house, air does not circulate sufficiently by natural means.
Even in a poorly sealed house air is only replaced because of differences between indoor
and outdoor air temperatures, or because of winds. This means that ventilation is dependent
on weather conditions and cannot be regulated.
It is especially important that humidity and carbon dioxide content of the indoor air stay at a
healthy level. Recommended humidity content of good indoor air is approximately 45%.
Humidity content is lower in winter and higher in summer and autumn. Dust mites thrive in
indoor air if humidity exceeds 50%, and if humidity stays at over 60% for a long time in
winter, water condenses in the cold structures of the house and mould starts to form.
The recommended maximum carbon dioxide content in good indoor air is circa 1,000 ppm.
1.2. What are the characteristics of adequate ventilation?
• Indoor air stays fresh in all the rooms of the dwelling, also in bedrooms during night.
Without adequate ventilation, carbon dioxide content tends to rise high especially in
bedrooms.
• The bathroom and the sauna get dry quickly.
• During the heating season, the windows and other outer wall structures remain dry.
• Humidity in indoor air is not condensed in the ventilation ducts.
• Air is fresh in the toilet as well.
SEASONAL CALENDAR
Autumn
• Wash or change the coarse filter and clean
or change the fine filter if needed. The
recommendation is approximately once a
year.
• Check that the heat recovery cell is clean.
• Check that the condensing water outlet is
not clogged.
Spring:
• Wash or change the coarse filter and clean
or change the fine filter if needed.
• Clean the fan blades and the post-heating
unit if needed.
• Check that summer ventilation is in
operation.
1.3. How much air is replaced?
For air to be clean to breathe, it has to be replaced with outdoor air every two hours.
In a new and a renovated house, air needs to be circulated continually, at least once an
hour, during the first year in order to remove harmful gases and structural humidity. In
buildings that are more than a year old and dry, ventilation can be regulated as needed.
Ventilation is boosted during for instance a sauna bath, clothes washing and cooking, and
reduced during very cold periods or when there is nobody at home. Carbon dioxide and
humidity sensors adjust ventilation in the rooms automatically as needed.
4 3 12 1 2 3 4
VALLOX 90 SE,
order of duct outlets
L MODEL
1. Supply air to rooms
2. Extract air to the unit
3. Outdoor air to the unit
4. Exhaust air outside
R MODEL
1. Supply air to rooms
2. Extract air to the unit
3. Outdoor air to the unit
4. Exhaust air outside
NOTE!
For further details, see inner pages.
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INSTRUCTIONS FOR USE
2. Instructions for using VALLOX 90 SE
For indoor air to stay healthy and beneficial also for the structures of the dwelling, ventilation
has to be in operation continually. It is not advisable to stop ventilation even for longer
holidays, because it makes indoor air stuffy. 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.
2.1. Making the unit ready for operation
1. Connect the plug to the mains supply. VALLOX 90 SE is now ready for operation.
2. Turn the unit on and choose a suitable power of ventilation at the control panel. There
are either one or more control panels. See the instructions for using the control panel in
sections 3.2. 1. and 3.2.2.
In normal conditions basic ventilation with change of air every two hours is sufficient in living
areas. Boosting is needed during for example sauna baths, cooking, clothes washing or
family parties. If a carbon dioxide and/or humidity sensor is installed in the system, VALLOX
90 SE will also take care of demand controlled ventilation.
2.2. Ventilation control
The unit can be fully controlled with the control panel delivered with the unit or with an
optional LON converter.
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 or current signal.
VALLOX 90 SE
DIGIT SED
ELECTRONIC CONTROLLER
WITH LCD DISPLAY
2.3. Ventilation control with 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 basic fan speed and the maximum fan speed.
Ventilation power cannot be set lower than the basic 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 are
switched off, fan speed can be raised to speed 8.
Supply air temperature adjustment functions (post-heating radiator is optionai)
• Switching the electric post-heating unit on / off.
• Setting the desired supply air temperature (+10˚C...+30˚C).
• Selecting the method for controlling the desired supply air temperature (constant temperature
control, cascade control of temperature ).
Preheating
• Setting the control temperature for the preheating unit (-6˚C...+15˚C exhaust air).
• Changing the setpoints.
There may be three control panels at most. When two or more control panels are used,
the most recent control function is valid.
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VALLOX 90 SE
INSTRUCTIONS FOR USE
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.
Carbon dioxide sensor (CO2)
Humidity sensor (RH)
LON converter
2.8.
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.
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INSTRUCTIONS FOR USE
2.9. Supply air constant temperature control
• VALLOX 90 SE has a relative post-heating control; when the temperature selected
• The heating radiator is on when the (
• Temperature control is only active when post-heating has been switched on.
2.10. Supply air cascade control
Remember!
Switch post-heating off when it gets too
warm in the dwelling.
Switch post-heating on again when it gets
cooler in autumn.
• Supply air temperature control can be changed into cascade control.
• It changes the controlling principle of the post-heating radiator. The temperature of air
• The program tries to keep supply air temperature at a value determined by the
• The aim is to keep the temperature of air blown to the ventilation zone always
• Cascade control can be selected at the control panel, and it is active when post-
• The heating radiator is on when the (
VALLOX 90 SE
exceeds supply air temperature by more than 2.5˙C, the radiator is on 100%, and
when the temperature difference gets smaller, the period of active operation is
automatically reduced in two-minute sequences. The adjustment range of heating is
10...30˙C.
) sign is displayed.
blown to the ventilation zone is controlled on the basis of extract air.
difference between extract air and the setpoint as follows: if extract air is warmer than
the setpoint, supply air temperature is lower than the setpoint by the difference. If
extract air is cooler, supply air is warmer by the difference. As an example, if room
temperature is 25˙C and the setpoint 24˙C, the aim is to blow 23˙C air to the
ventilation zone. If the temperature in the ventilation zone is 24˙C and the setpoint is
25˙C, the aim is to blow 26˙C air to the ventilation zone.
between 10...30˙C.
heating has been switched on.
) sign is displayed.
2.11. Heat recovery bypass function
• The bypass function tries to get as cool supply air as possible to the ventilation zone
by comparing the measuring results of the outdoor air and extract air sensors.
• The heat recovery cell is bypassed when post-heating is switched off, outdoor air
temperature is two degreees more than the setpoint and extract air is warmer than
outdoor air.
• The setpoint can be changed between 0…+25˙C. (Factory setting 12˙C.)
2.12. Heat recovery defrost function and preheating
• Defrost prevents the heat recovery cell from freezing, thus ensuring proper ventilation
even in cold periods.
• In VALLOX 90 SE defrosting is implemented by intermittently stopping the supply air
fan. The stopping function is controlled on the basis of the temperature sensor
measuring the temperature of exhaust air after the heat recovery cell.
• The supply air fan stops when exhaust air temperature falls below +3˙C and starts
when exhaust air temperature has risen to the value set (the amount corresponding to
hysteresis, factory setting +3˙C. See sections 3.3.19 and 3.3.20).
Preheating
• VALLOX 90 SE is also equipped with an electric preheating radiator. The preheating
radiator enables the defrosting of the heat recovery cell without the stopping of the
supply air fan. If you wish to use the preheating radiator, you have to change the setpoint for
preheating to +5˙C (factory setting is –3˙C, see section 3.3.21).
• The preheating radiator switches on before the stopping of the supply air fan and
heats cold outdoor air, thereby preventing the heat recovery cell from freezing.
2.13. Maintenance reminder
• The maintenance reminder switches on the maintenance reminder symbol ( ) in the
main display of the control panel at defined intervals, the factory setting being 4
months.
• The maintenance reminder symbol is acknowledged at the control panel (see the
instructions for using the control panel, section 3.3.7.).
• The interval can be set between 1...15 months at the control panel.
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VALLOX 90 SE
INSTRUCTIONS FOR USE
2.14. Fireplace switch function / boosting
Fireplace switch function
• The fireplace switch stops the extract air fan for 15 minutes and produces overpressure in
the ventilation zone. This makes it easier to light the fireplace, for instance.
• The function is started at the main display of the control panel by simultaneously pressing
and holding down the + and - buttons for 2 seconds.
• The function can also be started at a separate auto-reset push-button switch, wired from
the connection box of the unit to a wall in the fireplace room, for instance. Upon each
pressing, the stopping function continues for 15 minutes (the switch is not included in the
delivery).
• During the function, the fireplace/booster switch symbol (
of the control panel.
NOTE!
The starting of the extract air fan may weaken draught in the fireplace.
During cold winter seasons, the flowing of cold air to the extract ducts may cause the antifreezing and
defrost functions to start. The situation will normalise in a while, after the functions stops.
Booster switch function
• The booster switch raises the fan speed to the set maximum speed for 45 minutes.
• The function is started at the main display of the control panel by simultaneously pressing
and holding down the + and - buttons for 2 seconds.
• The function can also be started at a separate auto-reset push-button switch, wired from
the connection box of the unit to a wall in a classroom, for instance. Upon each pressing,
the booster function continues for 45 minutes.
• During the function, the fireplace/booster switch symbol (
of the control panel.
• The function is selected at the control panel.
) is visible in the main display
) is visible in the main display
2.15. Fault signal relay (remote monitoring)
• The fault signal relay has potential-free points (24 VDC, 1 A).
• The points provide information on various failure modes of the unit.
• When the antifrost function of the water-circulating radiator is on, the points of the relay
close and open at 10-second intervals. (The VALLOX 90 SE unit does not have a watercirculating radiator.)
• Alarm of high carbon dioxide content switches the relay at 1-second intervals.
• In other fault situations, the points are closed.
2.16. Air filtering
VALLOX 90 SE features coarse filtering of both extract and supply air before the fans. The
unit has F7 (B) and G3 class (A) fine and coarse filters on the supply side, and a G3 class
coarse filter (C) on the extract side. The filters need to be in place in the unit whenever
ventilation is in operation.
A
C
B
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VALLOX 90 SE
INSTRUCTIONS FOR USING THE CONTROL PANEL
3. Control panel
3.1. Keyboard
1 2 3 4
5 6 7 8
1
Start button
With this button, you switch the unit on and off.
When the indicator is lit, the unit is on.
2
Carbon dioxide adjustment
With this button, you set carbon dioxide
adjustment on and off. When the indicator is
lit, the adjustment is on.
3
Humidity adjustment
With this button, you set humidity adjustment
on and off. When the indicator is lit, the
adjustment is on.
4
Post-heating
With this button, you set post-heating on and
off. When the indicator is lit, post-heating is on.
The summer function is active when the indicator
is not lit.
5
Scrolling up
With this button, you can scroll the displays upward.
6
Scrolling down
With this button, you can scroll the displays downward.
7
Increase button
With this button, you can increase values.
8
Decrease button
With this button, you can decrease values.
Power failure
After a power failure, the unit starts at minimum
fan speed. The adjustments and setpoints chosen
will remain in the memory of the unit in spite of
the power failure.
3.2. Operating menu
The displays of the operating menu (sections 3.2.1.–3.2.6.) can be scrolled with the scrolling buttons
(see section 3.1., items 5 and 6 in the figure).
3.2.1. Main display and change of fan speed
3
21 C
10:20
Fan speed (3).
3
21 C
Supply air temperature (21 °C).
Post-heating is on.
10:20
Time.
Filter guard alert.
Fan speed can be changed in this display with the + and – buttons
(see section 3.1., items 7 and 8 in the figure).
Maintenance reminder alert.
Fireplace / booster switch on. The fireplace /
booster switch is activated in this display by
simultaneously pressing down the + and – buttons
for 2 seconds.
Week clock control on.
3.2.2. Moving to the settings menu
To settings menu
See manual
3.2.3. Week clock control
Week program
on
In order to move the control panel to the settings menu, press the + and – buttons simultaneously.
In the settings menu, you can change setpoints for the ventilation unit.
Week clock control can be activated by pressing the + button and deactivated by pressing the –
button. Week clock control is on when the symbol of week clock control is shown in the main
display. In week clock control, the basic fan speed and supply air temperature of the unit are
adjusted in accordance with the programme in section 3.3.4.
3.2.4. Content display
RH1 35% RH2 40%
CO2 0821 PPM
The content display shows humidity and carbon dioxide content. The corresponding
sensors are required (options).
3.2.5. Temperature display
Out 20 In 20
Sup. 20 Exh. 20
The temperature display shows the temperatures of outdoor air, indoor air, supply air
and exhaust air. The accuracy of the temperature sensors is ± 2 °C.
3.2.6. Setting supply air temperature
Temp. setting
20C
Supply air temperature setting is changed with the + and – buttons.
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VALLOX 90 SE
INSTRUCTIONS FOR USING THE CONTROL PANEL
3.3. Settings menu
You can reach the settings menu from the operating menu as indicated in section 3.2.2. The displays of the settings menu
(sections 3.3.1.–3.3.26.) can be scrolled with the scrolling buttons (see section 3.1., items 5 and 6 in the figure).
3.3.1. Setting the basic fan speed
MIN speed
1
3.3.2. Moving to the operating menu
To main menu
Press + and -
3.3.3. Erasing the week programme
Erase week prog.
Press + and -
3.3.4. Week programme programming
Adjust week prog.
Press + and -
The desired basic fan speed (minimum fan speed) is selected with the + and – buttons. Active when
week clock control is not on. Week clock control changes this speed.
You can return to the operating menu by pressing the + and – buttons simultaneously.
The week programme can be totally erased by simultaneously pressing the + and – buttons.
You can access the programming mode for the week clock programme by simultaneously pressing
the + and – buttons. See section 3.4.1.
3.3.5. Adjusting time
Adjust time
Press + and -
3.3.6. Mode of operation of the maximum speed setting
MAX Speed limit
with adjustments
3.3.7. Choosing the language version
Kieli / Language
English
3.3.8. Restoring factory settings
Factory settings
see manual
3.3.9. Adjustment interval
Adjust interval
10
3.3.10. Resetting the service reminder
Mainten. reset
Press + and -
You can adjust time by simultaneously pressing the + and – buttons. For more details, see section
3.4.2.
The maximum fan speed setting can be selected to be active either in connection with (carbon dioxide
and humidity) adjustments or permanently. The selection is done with the + and – buttons.
Select the desired language (German, English, Swedish, French or Finnish) with the + and – buttons.
The general factory settings can be restored by pressing the + and – buttons simultaneously.
Remember to ensure that the setpoints are in accordance with the factory settings for this unit.
Especially, check the unit model (electricity / water) and change if needed as stated in section
3.3.20.
The adjustment interval for humidity and carbon dioxide adjustments is selected with the + and –
buttons. The adjustment interval refers to minutes.
The maintenance reminder is reset by pressing the + and – buttons simultaneously. This
turns out the maintenance reminder symbol (
) in the main display.
3.3.11. Contrast of the control panel display
Display contrast
05
3.3.12. Address of the control panel
Panel address
1
3.3.13. Adjusting the direct current fan on the extract air side
DC fan exhaust
100%
The contrast setting for the control panel display is changed with the + and – buttons.
The address of the control panel is changed with the + and – buttons. Two control panels cannot
have the same address. If control panels have the same address, they will go to the bus fault state
and will not operate.
The desired adjustment value for the DC fan is selected with the + and – buttons. The rotation speed
of the extract air fan can be lowered by decreasing the percentage value. If the unit has alternating
current fans, this adjustment has no impact on the operation of the unit.
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VALLOX 90 SE
INSTRUCTIONS FOR USING THE CONTROL PANEL
3.3.14. Adjusting the direct current fan of the supply air side
DC fan - supply
100%
3.3.15. Changing the operating temperature of heat recovery cell bypass
Cell bypass
10C
3.3.16. Setpoint of the basic humidity level
Basic %RH level
40%
3.3.17. Mode of operation of the fireplace / booster switch
Switch type
Fireplace switch
3.3.18. Choosing cascade control for supply air temperature
Cascade adjust
Off
The desired adjustment value for the DC fan is selected with the + and – buttons. The rotation speed
of the supply air fan can be lowered by decreasing the percentage value. If the unit has alternating
current fans, this adjustment has no impact on the functioning of the unit.
The desired cell bypass temperature is selected with the + and – buttons. If outdoor temperature
is lower than cell bypass temperature, the summer / winter damper is in the winter position.
The desired setpoint is chosen with the + and – buttons when manual adjustment has been selected
as the Rh level setting (humidity setting, section 3.3.19).
The mode of operation of the switch (either fireplace or booster switch) is selected
with the + and – buttons.
Cascade control is activated or deactivated with the + and – buttons.
3.3.19. Choosing the basic humidity level
Rh-level setting
automatic
3.3.20. Choosing post-heating for the unit
Radiator type
electric rad.
The basic humidity level can be chosen as either automatic or manual. The selection is
done with the + and – buttons.
A water or electric radiator is selected with the + and – buttons, depending on the type of postheating radiator the unit is equipped with.
Note! Choosing the wrong type of post-heating causes a faulty post-heating function.
3.3.21. Choosing maintenance reminder interval
Maintenance rem.
04
3.3.22. Hysteresis of the anti-frost function in the heat recovery cell
Hysteresis
03C
3.3.23. Stopping temperature of the supply air fan for the anti-frost function in the heat recovery cell
Supply fan stop
05C
3.3.24. Pre-heating temperature for the anti-frost function in the heat recovery cell
Preheater
07C
The interval for the maintenance reminder is selected with the + and – buttons. The
maintenance reminder interval refers to months.
The hysteresis of the anti-frost function in the heat recovery cell is selected with the + and – buttons.
The stopping temperature of the supply air fan for the anti-frost function in the heat
recovery cell is chosen with the + and – buttons.
The preheating temperature for the anti-frost function in the heat recovery cell is
chosen with the + and – buttons.
3.3.25. Changing the setpoint for carbon dioxide adjustment
CO2-setting
The setpoint for CO2 adjustment is chosen with the + and – buttons.
0900 PPM
3.3.26. Choosing maximum fan speed
MAX speed
8
The desired maximum fan speed is selected with the + and – buttons. Maximum fan
speed is on either with adjustments or permanently. See section 3.3.6. Mode of
operation of the maximum speed setting.
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INSTRUCTIONS FOR USING THE CONTROL PANEL
3.4. Week clock control
3.4.1. Week programme programming
DHrSp Tmp
1 12 5 20 Exit
Cursor
D Day 1…7
1 = Monday, 2 = Tuesday, etc.
Hr Hours, 0…23
Sp Fan speed, 1…8
Tmp Supply air temperature, 10...30 ºC
Exit Save the setting and exit
N No change to previous
DHrSp Tmp
1 7 2 17 Exit
DHrSp Tmp
1 16 4 20 Exit
DHrSp Tmp
1 19 6 N Exit
DHrSp Tmp
1 21 4 N Exit
The week programme can be used to set the desired fan speed (basic fan speed) and supply air
temperature for each hour of the day on seven days a week. The week programme overrides
manual adjustments.
Carbon dioxide and humidity adjustment can increase fan speed but never decrease it below the
basic fan speed set in the week programme.
Example: Monday
Fan speed is increased to speed 2 and supply air temperature to 17 ºC between 07:00 (7 a.m.)
and 17:00 (5 p.m.) hours. After that, fan speed is raised to speed 4 and supply air temperature to
20 ºC. For the evening, fan speed is boosted to speed 6 between 19:00 and 21:00 hours (for the
period when a sauna bath is taken), after which fan speed is lowered back to 4.
Move the cursor with the arrow keys and change values with the + and – buttons. Note that Exit
and saving are done when the programming is finished by moving the cursor below the word Exit
and pressing + or –.
Changes in fan speed (Sp) and supply air temperature (Tmp) are only made for the hours desired;
in other cases, use N (no change to previous).
Monday (D = 1), 07:00 hours (H = 7), fan speed 2 (Sp = 2), supply air temperature 17 ºC (Tmp =
17). Move the cursor to the following hour.
Monday (D = 1), 16:00 hours (H = 16), fan speed 4 (Sp = 4), supply air temperature 20 ºC (Tmp
= 20). Move the cursor to the following hour.
Monday (D = 1), 19:00 hours (H = 19), fan speed 6 (Sp = 6), supply air temperature unchanged
(Tmp = N). Move the cursor to the following hour.
Monday (D = 1), 21:00 hours (H = 21), fan speed 4 (Sp = 4), supply air temperature unchanged
(Tmp = N). Move the cursor to the following day.
Similar changes have to be made separately for each day. Finally, exit the programming mode by
selecting Exit. If you wish, you can erase the week programme as indicated in section 3.3.3. You
can then start programming from the start. You can see the settings programmed by choosing a day
and by scrolling the hours with the + or – button.
VALLOX 90 SE
3.4.2. Adjusting time
day hour min
1 15 30 Exit
Cursor
day Day 1…7
1 = Monday, 2 = Tuesday, etc.
hour Hours, 0…23.
min Minutes 0…60
Exit Save the setting and exit
Move the cursor with the arrow keys and change values with the + and – buttons. Exit
and saving are done when the programming is finished.
Monday (D = 1), hours 15 (H = 15), minutes (M = 30).
Time is maintained even though there is a power failure.
3.5. Factory settings
Basic fan speed = 1
Maximum fan speed = 8
Carbon dioxide adjustment (CO
Basic humidity level = automatic or manually chosen value
Adjustment interval = 10 min
Freezing protection (cell) = 3˚C
Freezing protection hysteresis = 3˚C
Preheating setting = -3˚C (change to +5˚C if you want to use preheating)
Maintenance reminder = 4 months
Cell bypass = 12˚C
Cascade control = not used
Humidity level (RH level) adjustment = automatic
Switch type = fireplace switch
) = 900 ppm CO
2
2
11
Page 12
VALLOX 90 SE
MAINTENANCE INSTRUCTIONS
4. MAINTENANCE INSTRUCTIONS
4.1. Before starting maintenance operations
When you open the door of the VALLOX 90 SE unit, the safety switch (S) switches the unit
off; in spite of that, please disconnect the plug of the unit. Always disconnect the plug
before starting maintenance operations for the VALLOX 90 SE unit. The post- and preheating
radiators of the unit are PTC resistors.
When they are in operation, they have an alternating voltage of 230 V on the surface.
Because of this, the plug must always be disconnected before starting maintenance
operations.
A
T
C
D
B
VALLOX 90 SE filters and heat recovery cell. The
units are available in right and left handed
models. In the right handed model (model R)
outdoor air comes to the unit from the right side
of the centre line as shown in the instructions.
In the left handed model (model L) outdoor air
comes from the left side of the unit. The filters,
summer / winter damper and the heating radiator change places correspondingly.
E
4.2. Filters
When the maintenance reminder lights up the control panel indicator,
the cleanliness of the filters must be checked. Outdoor air is filtered
in the unit with two kinds of filters. A G3 class coarse filter (A) filters
off insects, heavy pollen and other dust. An F7 class fine filter (B)
filters off invisible dust. Extract air is filtered with a G3 class coarse
filter (C). Clean the coarse filters A and C by washing them at least
twice a year.
Wash the filters with +25…30˚C warm water and washing-up liquid,
pressing them smoothly. Do not handle the filters with force.
When washing is done properly, filters stand cleaning 3 to 4 times.
In other words, you have to replace them at least every two years.
REMEMBER!
Clean the filters at least twice a year. Set the maintenance reminder interval according
to your needs. See the instructions in section 3.3.18 (dependent on the cleanliness of
outdoor and indoor air).
The fine filter (B) is not washable. Clean it at the same time as the G3 class filters by
vacuuming it with a brush nozzle. When cleaning, be careful no to break filter material.
To ensure good supply air quality, replace the filter preferably every year, and at least every two years
depending on local air quality. It is recommended to replace filters in autumn. This way the filters
stay cleaner through the winter and can effectively filter off dust in the following spring.
In connection with the cleaning of the filters it is also advisable to check the cleanliness of
the heat recovery (HR) cell (D) at about two-year intervals. The sealing ledge (E) above the
HR cell must be torn off before it is possible to start removing the cell. When the sealing
ledge has been removed, the HR cell can be pulled out of the unit. Note! The laminas of
the HR cell are very thin and get easily damaged. The correct way to remove the HR cell
is to put your hands behind the HR cell and slowly pull the cell outward. If the HR cell is
dirty, soak it in a solution of water and washing-up liquid. Rinse the HR cell clean with a
jet of water. When all the water has drained off from between the laminas, you can put
the HR cell back in place. Finally, push the sealing ledge in place.
12
Page 13
VALLOX 90 SE
MAINTENANCE INSTRUCTIONS
4.3. Fans
Check the cleanliness of the fans in connection with the maintenance of
the filter and heat recovery cell. Clean the fans if necessary. You can
remove the fans from the unit before cleaning them.
The fan blades can be cleaned with compressed air or with a brush. Do
not remove or move the balancing pieces on the fan blade.
Removing the supply air fan (A)
Before removing the supply air filter, you have to remove the F7 fine filter
(C) and the protective sleeve (D) of the preheating radiator. The F7 fine
filter can be removed by pulling, and the protective sleeve of the preheating
radiator is fixed with four screws. The fan is attached to the fixing plate
with a butterfly nut. Loosen the butterfly nuts and lift the fan out. Finally
disconnect the quick coupling of the fan conductor.
Removing the extract air fan (B)
The fan is attached to the fixing plate with a butterfly nut. Loosen the
butterfly nuts and lift the fan out. Finally disconnect the quick coupling
of the fan conductor.
If you use water in cleaning the unit or its parts, do not let it flow to the
electrical parts.
A
D
B
C
4.4. Condensing water
During the heating season, humidity of extract air condenses to water.
Water formation may be abundant in new buildings or if ventilation is
low compared to the humidity build-up caused by the residents. Condensing
water needs to flow out from the ventilation unit without hindrance. In
connection with maintenance, e.g. in autumn before the beginning of the
heating season, make sure that the condensing water outlet (L) in the
bottom tank is not clogged. You may check it by pouring a little water in
the tank. Clean if necessary. Do not let water flow to the electrical parts.
L
170
150
L
13
Page 14
TROUBLESHOOTING
VALLOX 90 SE
SYMPTOM REASON
Outdoor air coming to
1
the dwelling is cold.
2
Supply air fan keeps
stopping.
Supply air fan stops and
3
starts too frequently.
The maintenance reminder
4
symbol (
the unit operates otherwise
normally.
) is displayed and
• Air cools down in the attic ducts.
• The heat recovery cell is frozen, which is
why extract air cannot heat outdoor air.
• The post-heating radiator does not work.
• The extract air filter or cell is clogged.
• The initial adjustment of ventilation has not
been done.
• The stopping of the supply air filter is active.
NOTE!
If you decrease the setpoint too much, the cell
may freeze. Compare with list item 1.
• The difference between the stopping and
starting temperatures is too small.
• The maintenance reminder lights up the
service reminder symbol in the main
display of the control panel at an interval
of approximately 4 months (factory setting).
• You may change the interval (see the
instructions for using the control panel, section 3.3.18).
DO THIS
• Check the insulation of the attic ducts.
• If the heat recovery cell is frozen, check the setpoint for
freeze protection. The setpoint for freeze protection can be
raised by 1 or 2˚C, or the sensor can be bent closer to the
cell, in which case the supply air fan stops earlier (see the
instructions for using the control panel, section 3.3.20).
Thaw the cell before closing the door.
• Check that the filters and the heat recovery cell are clean.
• The fan stops more rarely and the efficiency of the heat
recovery cell gets better when the setpoint is decreased by
1 or 2˚C. (See the instructions for using the control panel,
section 3.3.20.)
• Raise the difference between the stopping and starting temperatures by 1 or 2˚C. It extends the period between stopping and starting. (See the instructions for using the control
panel, section 3.3.19.)
• Check the cleanliness of the filters and the unit. If needed,
clean or replace the filters. Also check the external grille.
• Acknowledge the maintenance reminder symbol to make it
disappear. (See the instructions for using the control panel,
section 3.3.7.)
"Exh air sensor faulty"
5
message is displayed and
the unit is stopped.
"Inp. air sensor faulty"
message is displayed and the
unit is stopped.
"In air sensor faulty" message
7
is displayed and the unit is
stopped.
"Out air sensor faulty"
message is displayed and the
unit is stopped.
• There is a fault in the freezing protection
sensor.
• There is a fault in the supply air sensor.6• Contact a maintenance company. The sensor installation
• There is a fault in the extract air sensor.
• There is a fault in the outdoor air sensor.8• Contact a maintenance company. The sensor installation
• Contact a maintenance company. The sensor installation
must be checked and if necessary the sensor replaced.
must be checked and if necessary the sensor replaced.
• Contact a maintenance company. The sensor installation
must be checked and if necessary the sensor replaced.
must be checked and if necessary the sensor replaced.
14
Page 15
VALLOX 90 SE
TROUBLESHOOTING
SYMPTOM REASON DO THIS
"Bus fault" message is
9
displayed and the unit
operates at speed 1
(check the fan speed).
"Freezing alert" message is
10
displayed and the unit is
stopped.
The desired automatic
11
adjustment does not stay
on.
The unit does not work, the
12
fans are not running and no
indicator light is lit in the
control panel.
The unit does not obey the
13
control panel.
• Wiring fault in the carbon dioxide sensor,
in the control panel or in the humidity sensor.
• Antifreezing of the water-circulating radiator is active (not in the VALLOX 90 SE unit).
NOTE! If there is no non-freezing solution in the
water of the radiator, the radiator is at risk of
freezing.
• There is a fault in the humidity or carbon
dioxide sensor. One of the sensors is broken or missing.
• The door switch may be broken, or the
door is possibly not quite closed.
• The unit is out of power, e.g. because a
fuse has blown.
• The glass tube fuse (located in the control
card behind a protecting plate) the electronics inside the unit may have blown.
• Contact a maintenance company. The connections have to
be checked and corrected if necessary.
• Immediately troubleshoot the situation. Find out from a maintenance company if there is non-freezing solution in the
radiator. Check if the circulation pump is broken, the boiler
out of operation, etc. The situation may pass by itself as
soon as supply air temperature exceeds 10 degrees, but do
not wait till it happens.
• Contact a maintenance company. The sensor installation
and connections have to be checked. (The sensors are optional.)
• Check the door switch and fuses. The unit includes a T800
mA glass tube fuse.
• If needed, contact a maintenance company (e.g. to check
the glass tube fuse)
• Disconnect the plug of the unit from the wall socket, wait for
30 seconds and put the plug back. If this does not help,
contact a maintenance company.
"Carbon dioxide alarm"
14
message is displayed and the
unit is stopped.
15
The filter guard symbol
(
) is displayed and the
unit operates otherwise
normally.
• Carbon dioxide alarm. Carbon dioxide
content has exceeded 5000 PPM for more
than two minutes. May be caused by a
fire.
• The pressure in the filter guard (pressure
difference switch) has risen above the adjustment value or speed is 7 or 8.
• If there is a fire, take the necessary steps. You can make the
unit operative by disconnecting the plug from the wall
socket, waiting for 30 seconds and putting the plug back
again.
• Check the cleanliness of the filters and the unit. If needed,
clean or replace the filters. Also check the external grille.
After a power failure, the unit starts at minimum fan speed.
All the other selected adjustments and setpoints remain in the memory of the unit.
15
Page 16
VALLOX 90 SE
Vallox Oy • Myllykyläntie 9-11• FI-32200 Loimaa • Tel. +358 10 7732 200 • www.vallox.com
© VALLOX • We reserve the right to make changes without prior notification.
1.09.332E/10.4.2009/PDF
Page 17
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