Vallox DIGIT SE, DIGIT SE VKL Instructions For Use And Maintenance Manual
DIGIT SED
ELECTRONIC CONTROLLER
WITH LCD DISPLAY
• 1.09.61E
• 27.5.2008
• CODE B 3500 SE
© VALLOX
VKL
INSTRUCTIONS FOR USE AND MAINTENANCE
MODELS:
VALLOX DIGIT SE
VALLOX DIGIT SE VKL
© VALLOX • We reserve the right to make changes without prior notification.
VALLOX DIGIT SE has been initially adjusted
for normal circumstances in your home. Ventilation adjustment is needed mainly in the
following circumstances:
1. THREE QUESTIONS ABOUT VENTILATION
1.1. Why are rooms ventilated? ............................................................ p. 3
1.2. What are the characteristics of adequate ventilation? ........................ p. 3
1.3. How much ventilation is needed? .................................................... p. 3
2. INSTRUCTIONS FOR USE: VALLOX DIGIT SE
2.1. Taking into use ............................................................................. p. 4
2.2. Ventilation control .......................................................................... p. 4
2.3. Ventilation control with control panel................................................ p. 4
2.4. Ventilation control with CO2 sensor ................................................. p. 5
2.5. Ventilation control with humidity sensor ............................................ p. 5
2.6. Ventilation control with voltage or current signals............................... 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.
2.10. Supply air cascade control ............................................................. p. 6
2.11. Heat recovery bypass .................................................................... p. 6
2.12. Heat recovery cell defrosting function............................................... p. 6
2.13. Maintenance reminder ................................................................... p. 7
2.14. Filter guard function....................................................................... p. 7
2.15. Anti-freezing of the water circulated post-heating radiator................... p. 7
2.16. Fireplace switch / boosting function................................................. p. 7
2.17. Fault signalling relay...................................................................... p. 7
2.18. 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
3.4. Factory settings .............................................................................p. 12
4. INSTRUCTIONS FOR MAINTENANCE
4.1. Filters ...........................................................................................p. 13
4.2. Fans and post-heating radiator........................................................p. 14
4.3. Filter guard...................................................................................p. 14
4.4. Condensing water .........................................................................p. 13
5. TROUBLESHOOTING...................................................................................p. 16
VALLOX DIGIT SE/SE VKL
TABLE OF CONTENTS
2
2
VALLOX DIGIT SE models
Code: B3500 SE
VALLOX DIGIT SE
• Post-heating radiator: electric radiator 1000 W
ALLOX DIGIT SE VKL
• Post-heating radiator: water radiator
• Letter L or R after the name of the unit indicates whether the unit
is left- or right-handed.
EVERYDAY QUICK GUIDE
NOTE!
Never switch ventilation off,
because ventilation keeps indoor air
quality uniform and removes gases
and dust emanating from the
structures.
• 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 automatic adjustment based on humidity content is used.
• Washing and drying clothes:
Boost ventilation in washing and drying
rooms during the activity, unless automatic
adjustment based on humidity content is
used.
• 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.
© VALLOX • We reserve the right to make changes without prior notification.
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.
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.
SEASONAL CALENDAR
NOTE!
For further details, see inner pages.
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.
• Switch the post-heating radiator on.
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.
• Switch the post-heating radiator off.
VALLOX DIGIT SE/SE VKL
THREE QUESTIONS ABOUT VENTILATION
3
4
1
2
3
43 1
2
VALLOX DIGIT SE, order of duct outlets
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
L MODEL
© VALLOX • We reserve the right to make changes without prior notification.
ELECTRONIC CONTROLLER
WITH LCD DISPLAY
VALLOX DIGIT SE/SE VKL
Plug
The table below shows the fan speed that is adequate for normal basic ventilation in dwellings
of different sizes, if there are no better measurement data available. The table also indicates
the total electricity consumption of the fans in each case.
1
50
40
2
92
60
3
130
90
4
165
125
5
215
160
6
245
200
7
275
235
8
330
305
Remember:Never turn DIGIT off,
or else you'llkeep catching a cough.
4
INSTRUCTIONS FOR USE
2.Instructions for use: VALLOX DIGIT SE
In order for indoor air to remain healthy, also for the structures of thebuilding,
ventilation has to be in continuous operation. Do not stop ventilation even for
longer holidays, because that will make room air musty, and during the heating
period room air humidity may condensate in theducts and the structures, thereby
causing humidity damage. The sensors automatically set ventilation to an optimal
level even if the house is empty.
2.1. Taking into use
1. Connect the plug into the power supply. VALLOX DIGIT SE is now readyfor
operation.
2. Start the unit and select an appropriate ventilation rate on the controlpanel.
The unit includes one or more control panels. For instructions on how to use
them, see Section 3.2.1. and 3.2.2.
In normal conditions, basic ventilation is adequate, which means that air isreplaced
once every two hours. Increased ventilation is neededduring sauna baths, cooking,
washing of clothes or family parties. If CO
2
and humidity sensors have been
installed in the system, VALLOX DIGIT 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.
2.3. Ventilation control with control panel
The following ventilation control functions can be performed at the control panel:
Ventilation rate regulation
• Starting and stopping
• Capacity regulation (8 positions).
• Setting the basic fan speed and the maximum fan speed. Ventilation rate cannot be set
lower than the basic fan speed. When CO
2
and/or %RH adjustments are activated,
capacity cannot be adjusted to exceed the maximum fan speed. When CO
2
and %RH
adjustments are not enabled, fan speed can be raised to speed 8.
Supply air temperature control functions
• Switching the electric or water-circulated post-heating unit on or off.
• Setting the desired supply air temperature (+10°C...+30°C).
• Choosing the control mode for desired supply air temperature (constant temperature
control, cascade control).
Preheating
• Setting the control temperature for the preheating unit (-6°C...+15°C exhaust air).
• Changing the setpoints.
Max 3 control panels may be in operation. When two or more control panels are used, the
most recent control function is the one that is valid.
DIGIT SED
SPEED
Living space (m
2
)
Living space (m3/h)
Total electricity consumption of the fans (W)
LON converter
Carbon dioxide sensor
Control panel
Humidity sensor
65
115
162 209 270 306 349 414
© VALLOX • We reserve the right to make changes without prior notification.
VALLOX DIGIT SE/SE VKL
INSTRUCTIONS FOR USE
5
2.4. Ventilation control with carbon dioxide sensor (option)
• In carbon dioxide control, DIGIT SE adjusts fan speed so as to keep the carbon dioxide
content in the ventilation zone below the setpoint. If two or more sensors are used, fan
speed is adjusted in accordance with the highest measuring result.
• 1...5 optional carbon dioxide sensors may be connected to the VALLOX DIGIT SE unit.
• The adjustment is switched on / off and, if needed, the setpoint (500...2000 ppm) is
defined on the control panel. The factory setting is 900 ppm. The maximum carbon dioxide
content of indoor air should be 1000 ppm.
• While control is activated, you can use the control panel to raise fan speed to the maximum
speed and to lower it to the basic fan speed. In carbon dioxide control, maximum fan speed
limitation is enabled.
2.5. Ventilation control with humidity sensor (option)
Fan speed can be controlled in two ways:
1 Automatic humidity setting. This is suitable for controlling the washrooms in residential
buildings, for instance. The program records the current humidity level and defines it as the
setpoint used as the target value for making air dry after a shower, for instance. The setpoint
changes automatically according to season, and is always correct. This is the factory
setting.
2 You can also set a fixed humidity level of 1…99 %RH on the control panel. This setting can
be used in public saunas and public swimming pools. The program aims at maintaining
humidity at the chosen value. The setpoint can be changed as needed.
The mode of regulation is selected on the controller. The relative humidity of indoor air should
preferably be about 45%.
• While control is activated, you can use the control panel to raise fan speed to the maximum
speed and to lower it to the basic fan speed.
• In humidity control, the fan speed varies between the basic and maximum fan speeds set.
• When the unit is taken into use for the first time, with automatic setpoint search selected
(factory setting), it will take the program 3...10 hours to determine the value. During this
time, humidity control is not active (because the first value set at the factory is 100%).
• Automatic search is active, even if humidity control has not been selected.
2.6. Ventilation control with voltage or current signals
• The fan speeds of DIGIT SE can be controlled with voltage or current signals coming from
the remote monitoring system.
• The signal can be used to select speeds 0...8. However, the maximum fan speed may not
be exceeded if carbon dioxide or humidity control is active.
• The signal changes the basic fan speed.
• The signal does not lock the fan speed, i.e. it can be changed on the control panel within
the defined range. Carbon dioxide and humidity controls also operate within the defined
range.
2.7. Ventilation control with remote monitoring system (option)
• With the help of an optional LON converter, DIGIT SE can be connected to a remote
monitoring system.
• Before connecting DIGIT SE to the remote monitoring system, make sure that they are
compatible.
• The remote monitoring system may be used to control the same functions as on the control
panel.
• The remote monitoring system works in parallel with the control panel and the carbon
dioxide and humidity sensors.
2.8. Post-heating
For most of the year, the heat recovered from air to be extracted is enough to heat the cool air
coming from outside to a suitable temperature. If the heat of extract air is not enough, the air
coming from outside can be heated with the radiator included in the unit. The post-heating
radiator may be electric or water circulated. In both cases, heating can be activated on the
control panel (see section 3.1. of the instructions for use). When heating has been activated,
the unit automatically sets the temperature selected.
Carbon dioxide (CO2) sensor
Humidity (RH) sensor
2.8.
LON converter
© VALLOX • We reserve the right to make changes without prior notification.
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