BPC AIRFLOW DUPLEXVENT DV145SE Owner's manual

Low-energy ventilation unit with heat recovery
and demand-controlled automatic melting
© Airow
1.09.600E
17.6.2013
1 Extract air fan
(behind protective cover)
2 Supply air fan
(behind extract air duct)
3 Outdoor air filter F7
4 Heat recovery cell
5 Summer/winter damper
6 Outdoor air filter G4
7 Extract air filter G4
8 Post-heating radiator
(behind extract air duct)
9 Safety switch
10 Additional heating radiator
(behind extract air duct)
11 Control panel DIGIT SED
12 Carbon dioxide sensor
13 Humidity sensor
Operating, maintenance and
technical instructions
Electrical connection 230 V, 50 Hz, ≈ 11.9 A (plug)
Degree of protection provided by enclosures IP34
Fans Extract air 150 dm
3
/s 100 Pa
direct current (DC) Supply air 140 dm
3
/s 100 Pa
Heat recovery Cross-counter flow heat recovery cell, > 80%
Heat recovery bypass Automatic
Electric post-heating unit (standard) 900 W, 3.9 A
Additional heater 1500 W, 6.5 A
Fans Supply air G4 and F7
Extract air G4
Weight (with packaging) 88 kg
Ventilation power adjustment - control panel control
- CO
2
and %RH control
- remote monitoring control (voltage signal)
Options - CO
2
sensor
- %RH sensor
- Insulated attic fl oor penetration plate
- Base
TECHNICAL DATA
11 12
The figure shows the R model
13
1
6
9
8
2
10
7
3
5
4
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What the units include can vary depending on the sales area.
OPERATING INSTRUCTIONS
Operating instructions DUPLEXVENT DV145SE
For indoor air to stay healthy and beneficial also for the structures
of the dwelling, ventilation has to be in operation continuously. It is
not advisable to stop ventilation even for longer holidays because
it makes indoor air stuy. 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.
Making the unit ready for operation
1. Connect the plug to the mains supply. DUPLEXVENT DV145SE
is now ready for operation.
2. Start the unit and choose a suitable ventilation power at the
control panel. There is either one or more control panels. See
the operating instructions for control panel.
In normal conditions basic ventilation, with a 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 carbon dioxide and/or humidity sensors have been installed in
the system, DUPLEXVENT DV145SE automatically takes care of
demand-controlled ventilation.
Ventilation control
The unit can be controlled with a control panel. 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
signal.
Controlling ventilation with Airow Digit SED
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 base fan speed and the
maximum fan speed.
Ventilation power cannot be set lower than
the base 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 have been switched o, fan speed can be
raised to speed 8. (See the operating instructions for control panel,
Section 3.25.)
Ventilation control with carbon dioxide sensor
(option)
• In carbon dioxide control, DUPLEXVENT DV145SE 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 to 2 carbon dioxide sensors can be connected as options to
the DUPLEXVENT DV145SE unit.
• The adjustment is switched on/o 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 circa 1,000 ppm.
• During control, the control panel can be used to raise fan
speed to the maximum fan speed and to decrease it to the
base fan speed. In carbon dioxide control, maximum fan
speed limitation is enabled.
Controlling ventilation with humidity sensor (option)
There are two modes of adjusting fan speed:
1 Automatic humidity setting, which is suitable for controlling
humidity in for example washing rooms.
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, for instance after a shower. The setpoint
automatically varies for instance according to season 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 for example public saunas and swimming pools. The
program aims at keeping humidity at the setpoint. The setpoint
can be changed if needed. The mode of adjustment is chosen
at the controller. Recommended humidity content of good indoor
air is approximately 45%.
• During this control, the control panel can be used to raise fan
speed to the maximum fan speed and to decrease it to the base
fan speed.
• In humidity control, fan speed varies between the base and
maximum fan speeds selected.
• When the unit is first taken into use with automatic setpoint
search enabled (factory setting), it takes 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.
Controlling ventilation with voltage signal
• DUPLEXVENT DV145SE fan power can be controlled with a voltage
signal coming from remote monitoring.
• The signal can be used to select speeds 0 to 8. However, if
carbon dioxide or humidity adjustment is enabled, the maximum
fan speed cannot be exceeded. (See the operating instructions
for control panel, Section 3.25.)
• The signal changes the base 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.
Carbon dioxide and humidity sensors
Voltage signal values
Voltage values for each fan speed:
0 0.20...1.25 VDC
1 1.75...2.25 VDC
2 2.75...3.25 VDC
3 3.75...4.25 VDC
4 4.75...5.25 VDC
5 5.75...6.25 VDC
6 6.75...7.25 VDC
7 7.75...8.25 VDC
8 8.75...10.00 VDC
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What the units include can vary depending on the sales area.
OPERATING INSTRUCTIONS
Adjustment of supply air temperature
and summer/winter function
The temperature of air coming to the dwelling can be adjusted
between circa +10 °C and +30 °C. When there is a light on the
post-heating indicator, post-heating is activated and the unit heats air
as needed. The need for heating depends on the setpoint of supply
air temperature.
When there is no light on the post-heating indicator, post-heating is
o. This means that the summer function is activated for the ventilation
unit. The unit has a motorised summer/winter function. When the
summer function is on, the heat recovery cell is bypassed as soon
as outdoor air temperature has risen above the setpoint. See the
setpoint for cell bypass, factory setting +12 ºC. When outdoor air
temperature goes below the setpoint (factory setting +12 °C), the
unit starts to recover heat.
Two dierent kinds of supply air temperature adjustment can be
chosen at the unit: constant temperature control or cascade control.
In constant temperature control, the unit controls the temperature of
supply air directly in accordance with the measurement information
on the temperature of supply air blown to the ventilation area. In
cascade control, the unit controls supply air temperature according
to the temperature of air extracted from the ventilation area. The unit
calculates the dierence between the air extracted and the setpoint
for supply air and uses this dierence to control the need for post-
heating.
Winter function of ventilation unit
A set of parameters has been set at the factory for the freezing of
the heat recovery cell (3.21 and 3.22).When these parameters are
undercut, the ventilation unit melts the heat recovery cell utilising the
heat of extract air.
Melting is done by stopping the supply air fan (3.20. Choosing
melting mode) or by bypassing the heat recovery cell on the supply
air side (factory setting).
If the bypassing the heat recovery cell is chosen as the melting
mode, the relationship between the supply and extract air flows
does not change. This prevents the formation of a vacuum inside,
which may be harmful in some cases. In this case the electric resistor
heats the cold air coming from outside during the melting period to
Remember!
Switch post-heating o when it starts to get too warm in the
dwelling because of warm weathers.
Switch post-heating on again when it gets cooler in autumn.
Post-heating indicator light
Maintenance reminder
symbol
Maintenance reminder
• The maintenance reminder switches on the maintenance
reminder symbol( )on the main display of the control panel
at defined intervals, the factory setting being 4 months.
• The maintenance reminder symbol is acknowledged at
the main display of the control panel. (See the operating
instructions for control panel, Section 3.1.)
• The interval can be set between 1 and 15 months at the
control panel.
Fireplace switch function/booster
Fireplace switch function
(See the operating instructions for control panel, Section 3.12.)
• The fireplace switch stops the extract air fan for 15 minutes and
produces overpressure in the ventilation zone. This makes it
easier to light a fireplace.
The function is started on 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 for
example to a wall in the fireplace room. 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 ( ) is
visible on the main display of the control panel.
NOTE! The starting of the extract air fan may weaken draught in the
fireplace! In winter, this situation may disturb the winter function of the
unit. The situation will normalise in a while, after the fireplace function
stops.
Booster switch function
(See the operating instructions for control panel, Section 3.12.)
• The booster switch function raises fan speed to the set maximum
fan speed for 45 minutes.
The function is started on 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 for instance a wall in a classroom. Upon each pressing, the
boosting function continues for 45 minutes.
• During the function, the fireplace/booster switch symbol ( ) is
visible in the main display of the control panel.
• The function is chosen at the control panel.
Fireplace/booster switch symbol
Fault signal relay (remote monitoring)
• The fault signal relay has potential-free contacts
(24 VDC, 1 A).
• The contacts provide information on various failure modes
of the unit.
• Alarm of high carbon dioxide content switches the relay at
1-second intervals.
• In other fault situations, the contacts are closed.
the temperature desired (2.6. Setting supply air temperature). If the
temperature desired is high compared to outdoor air temperature,
the unit decreases the supply and extract air flows in order to attain
the desired supply air temperature.
A normal melting period varies from 15 to 45 minutes depending on
the amount of ice and the volume of the extract air flow.
The unit operates optimally on the factory settings in normal operation
in dwellings and detached houses. The parameters only need to be
touched in extreme problem situations. Examples of such situations
are high humidity loads such as a swimming pool or if there is a
detrimental amount of ice in the exhaust air duct.
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What the units include can vary depending on the sales area.
OPERATING INSTRUCTIONS FOR CONTROL PANEL
Start button
Press the button to turn the ventilation unit on and o.
When the indicator is lit, the unit is on.
Carbon dioxide adjustment
Press the button to turn carbon dioxide adjustment on
and o. When the indicator is lit, the adjustment is on.
Humidity adjustment
Press the button to turn humidity adjustment on and o.
When the indicator is lit, the adjustment is on.
Post-heating
Press the button to turn post-heating on and o. The sum-
mer function is on when the indicator is not lit.
Scrolling up
With this button you can scroll the displays upward.
Scrolling down
With this button you can scroll the displays downward.
Increase button
Use this button to increase values.
Decrease button
Use this button to decrease values.
3
4
15
6
7
8
1.1 Keyboard
2
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.
Main display
Fan speed can be changed in this display with the + and – buttons
(see Section 1.1, figure items 7 and 8).
Fan speed (3).
Supply air temperature (21°C).
Time.
Filter guard alarm.
Maintenance reminder alarm.
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
21
10:20
Ventilation operating menus
Main display
2.1. Main display and change of fan speed
2.2 Moving to the Settings menu
To settings menu
see manual
I
n order to move to the Settings menu,
press the + and – buttons simultaneous-
ly. In the Settings menu you can chan-
ge setpoints for the ventilation unit.
2.3 Week-clock control
Week program
on
Week-clock control can be switched
on with the + button and o with the –
button. Week-clock control is on when
the week-clock control symbol is in the
main display. In week clock control,
the base fan speed and supply air
temperature of the unit are adjusted in
accordance with the programme as
described in Section 4.1.
2.4 Content display
RH 35% RH2 40%
CO2 0821 PPM
The content display shows humidity
and carbon dioxide content. The
corresponding sensors are required
(options).
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.
2.6 Setting supply air temperature
Temp. setting
20C
Supply air temperature is changed
with the + and – buttons.
1. Control panel operation
2. Operating menu
3. Settings menu You can move to the Settings menu from the Operating menu as described in Section 2.2
The displays of the Settings menu (Sections 3.1–3.29) can be scrolled with the scrolling buttons (see Section
1., items 5 and 6 in the figure).
3.1 Resetting maintenance reminder
Mainten. reset
Press + and –
The maintenance reminder is reset by
pressing the + and – buttons simulta-
neously. This turns out the maintenance
reminder symbol ( ) in the main
display.
3.2 Choosing maintenance reminder interval
Maintenance rem.
04
The interval for the maintenance
reminder is selected with the + and
– buttons. The maintenance reminder
interval refers to months.
3.3 Choosing language version
Kieli / Language
English
The desired language is chosen with
the + and – buttons.
3.4 Adjusting time
Adjust time
Press + and -
You can adjust time by simultaneously
pressing the + and – buttons. See se-
parate instructions in 4.2.
1
21C 10:20
The displays of the Operating menu (Sections 2.1–2.6) can be scrolled with the scrolling buttons
(see Section 1, figure items 5 and 6).
DV145SE

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OPERATING INSTRUCTIONS FOR CONTROL PANEL
3.5 Week programme programming
Adjust wk. prog.
Press + and -
To go to the week-clock programme
programming mode press the + and –
buttons simultaneously. See the instruc-
tions in 4.1.
3.6 Erasing week programme
Erase wk. prog.
Press + and -
You can totally erase the week pro-
gramme by pressing the + and – but-
tons simultaneously.
3.7 Choosing basic humidity level
Rh-level setting
automatic
The basic humidity level can be cho-
sen as either automatic or manual.
The selection is done with the + and
– buttons.
3.8 Basic humidity level setpoint
Basic %RH level
40%
The desired setpoint is chosen with the
+ and – buttons when manual adjust-
ment has been selected as the Rh level
setting (humidity setting, Section 3.7).
3.9 Changing setpoint for carbon dioxide adjustment
CO2 setting
0900 PPM
The setpoint for CO2adjustment is cho-
sen with the + and – buttons.
3.10 Adjustment interval
Adjust interval
10
The adjustment interval for humidity and
carbon dioxide adjustments is selected
with the + and – buttons. The adjust-
ment interval refers to minutes.
3.11 Changing operating temperature of
heat recovery cell bypass
Cell bypass
10C
The desired cell bypass temperature
is selected with the + and – buttons. If
outdoor temperature is lower than cell
bypass temperature, the summer/win-
ter damper is in the winter position.
3.12 Mode of operation of fireplace/booster switch
Switch type
fireplace switch
The mode of operation of the switch
(either fireplace or booster switch) is
selected with the + and – buttons.
3.13 Address of control panel
Panel address
1
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 go to bus fault state
and do not work.
3.14 Contrast of control panel display
Display contrast
05
The contrast setting for the control panel
display is changed with the + and –
buttons.
3.15 Restoring factory settings
Factory settings
see manual
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.
3.16 Choosing cascade adjustment for supply air temperature
Cascade adjust
o
Cascade adjustment is chosen to be on
or o with the + and – buttons.
3.17 Choosing post-heating for the unit
Radiator type
Electric rad.
A water or electric radiator is selected
with the + and – buttons, depending on
the type of post-heating radiator the unit
is equipped with. Note! Choosing the
wrong type of post-heating may cause
a faulty post-heating function.
3.18 Choosing additional heater for unit
Extraheater type
Electric rad.
An electric or MLV radiator is chosen
according to ventilation unit type with
the + and – buttons. This unit can be
used only for electric heater setting
3.19 MLV additional heater setpoint
MLV winter temp
0C
Changing MLV radiator setpoint. When
outdoor air temperature goes below this
setpoint, the ventilation unit starts the
MLV pump. If a message “Preheating
not in use” is displayed, no setpoint is
in use.
3.20 Choosing melting mode
Defrost mode
bypass
Choose one of the two modes of mel-
ting to be used in the unit. Melting is
done either by stopping the supply air
fan or by bypassing the HR cell.
3.21 Winter parameter A
Winterparam. A
The winter function of the unit is adju-
sted from the menu when it is not too
cold outside (warmer than –15 °C).
Decreasing the value of the parameter
increases the freezing of the HR cell.
Increasing the value decreases the freezing of the HR cell. The unit ope-
rates optimally on the factory settings. There is no need to adjust this set-
point except in extreme problem situations, and even then it is advisable
to contact Vallox Maintenance. The adjustment is made with the + and
– buttons. See the table for the factory setting.
3.22 Winter parameter B
Winterparam. B
The winter function of the unit is adju-
sted from the menu in very cold weat-
her (colder than –15 °C). Increasing
the value of the parameter increases
the freezing of the HR cell.
Decreasing the value decreases the freezing of the HR cell. The unit
operates optimally on the factory settings. There is no need to adjust this
setpoint except in extreme problem situations, and even then it is advisab-
le to contact Vallox Maintenance. The adjustment is made with the + and
– buttons. See the table for the factory setting.
3.23 Setting base fan speed
MIN speed
1
The desired base fan speed (minimum
fan speed) is chosen with the + and
– buttons. Active when week-clock
control is not on. Week-clock control
changes this speed.
3.24 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 always. See Section
3.25. Mode of operation of maximum
speed setting.
3.25 Mode of operation of maximum speed setting
MAX speed limit
with adjustments
The maximum fan speed setting can
be selected to be active either only in
connection with (carbon dioxide and
humidity) sensor adjustments or perma-
nently. The selection is done with the +
and – buttons.
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OPERATING INSTRUCTIONS FOR CONTROL PANEL
This appliance can be used by children aged from 8 years and above and persons with reduced physical, sensory or mental capabilities or lack
of experience and knowledge if they have been given supervision or instruction concerning use of the appliance in a safe way and understand
the hazards involved.
Children shall not play with the appliance.
Cleaning and user maintenance shall not be made by children without supervision.
4. Week-clock control
4.1 Week programme programming
The week programme can be used to set the desired fan speed (base 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 base fan speed set in the week programme.
Example: Monday
It is the intention to decrease fan speed to speed 2 and supply air tempera-
ture to 17 ºC between 07:00 (7 a.m.) and 16:00 (4 p.m.). 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 (7
p.m. and 9 p.m.), after which fan speed is lowered back to 4.
4.2 Adjusting time
5. Factory settings
Base fan speed = 1
Maximum fan speed = 8
Carbon dioxide adjustment (CO 2) = 900 ppm CO2
Adjustment interval = 10 min
Winter parameter A = 9 bars
Winter parameter B = 3 bars
Mode of melting = heat recovery cell bypass
Maintenance reminder = 4 months
Cell bypass = 12 °C
Cascade adjustment = not in use
Speed steps:
1. = 31 %
2. = 42 %
3. = 47 %
4. = 54 %
5. = 59 %
6. = 66 %
7. = 72 %
8. = 100 %
Humidity level (Rh level) setting = automatic
Switch type = fireplace switch
Extraheater type = electric radiator
3.26 Adjusting fan on the supply air side
DC fan, supply
100%
The desired adjustment value for the
supply air fan is selected with the +
and – buttons. The rotation speed of
the supply air fan can be decreased
by decreasing the percentage.
3.27 Adjusting fan on the extract air side
DC fan, exhaust
100%
The desired adjustment value for the
extract air fan is selected with the +
and – buttons.
The rotation speed of the extract air fan
can be decreased by decreasing the
percentage.
Move the cursor with the arrow keys and
change values with the + and – buttons.
Note that to exit and save when the
programming is finished, move the cursor
below the word Exit and press + or –.
Changes in fan speed (Sp.) and supply
air temperature (Temp.) are only made
for the hours desired; in other cases, use
N (no change to previous).
Monday (d = 1), 07:00 (h = 7),
fan speed 2 (sp = 2), supply air
temperature 17 °C (tmp =17).
Move the cursor to the following hour.
Monday (d = 1), 16:00 (h = 16),
fan speed 4 (sp = 4), supply air
temperature 20 °C (tmp = 20).
Move the cursor to the following hour.
Monday (d = 1), 19:00 (h = 19),
fan speed 6 (sp = 6), supply air
temperature no change (tmp = N).
Move the cursor to the following hour.
Monday (d = 1), 21:00 (h = 21),
fan speed 4 (sp = 4), supply air
temperature no change (tmp = N).
Move the cursor to the following hour.
3.28 Fan speed level adjustment
Speed 1 level
15%
The desired fan speed level is adjusted
from the menu. Adjustment range is
0–100%. However, fan speeds limit
the adjustment range as follows:
If for instance speed 3 is 30%, speed 2 cannot be increased to more
than 29% and speed 4 cannot be decreased below 31%.
The fan stops when the setpoint is 14% or lower. The adjustment is made
with the + and – buttons. There are 8 displays, one for each fan step.
3.29 Moving to Operating menu
To Main menu
press + and –
To move back to the Operating menu,
press the + and – buttons simultaneous-
ly.
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 3.6. 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.
Move the cursor with the arrow keys and
change values with the + and – buttons.
Exit and save when the programming is
finished.
Monday (D=1), hours 15 (H=15), minu-
tes (M=30)
Time is maintained even though there is
a power failure. (See Section 1.1, figure
items 5 and 6).
d hr sp tmp
1 0 N N Exit
d hr sp tmp
1 7 2 17 Exit
d hr sp tmp
1 16 4 20 Exit
d hr sp tmp
1 19 6 N Exit
d hr sp tmp
1 21 4 N Exit
Cursor
d Day 1…7
1 = Monday, 2 = Tuesday etc.
h Hour 0…23
sp. Fan speed 1…8
Temp Supply air temperature
10…30°C
Exit Save the setting and exit
N No change to previous hour setting
Cursor
D Day 1…7
1 = Monday, 2 = Tuesday etc.
H Hour, 0…23
M Minutes, 0…60
Exit Save the setting and exit
STARTING POINT
day hour min
1 15 30 Exit
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MAINTENANCE
Before starting maintenance operations
When you open the DUPLEXVENT DV145SE unit, the security switch (S)
turns voltage o. In spite of this, disconnect the plug of the unit.
Disconnect the plug of the DUPLEXVENT DV145SE unit before
starting maintenanceoperations.
Filters
When the maintenance reminder gives an alarm, the cleanliness of
the filters must be checked. Outdoor air is filtered in the unit with two
kinds of filters. A coarse filter (A) filters o insects, heavy pollen and
other dust. An F7 class fine filter (B) filters o fine dust invisible to the
eye. Extract air is filtered with a coarse filter (C).
By using original Airow filters you ensure good operation of the
ventilation unit and the best filtering result. The replacement interval
of filters depends on dust content in ambient air. It is recommended to
replace fans in spring and autumn, but at least once a year.
MAINTENANCE INSTRUCTIONS
Filters
Heat recovery cell
Heat recovery cell
When you replace the filters, you are also advised to check the
cleanliness of the heat recovery (HR) cell (D) at an interval of
approximately every two years. The sealing ledge (E) above the
HR cell must be pulled o in the direction shown by the arrow in the
figure. 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.
If the HR cell is dirty, wash it by putting it in a solution of water with
washing-up liquid. Rinse the HR cell clean with a jet of water. When
water has drained from between the laminas, you can push the HR
cell back in place. Finally, push the sealing ledge in place.
S
A
B
C
D
C
E
D
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MAINTENANCE INSTRUCTIONS
Fans
Check the cleanliness of the fans when carrying out maintenance for filters and the heat
recovery cell. Clean the fans if needed. The fans are very sensitive to external mechanical
damage, and it is recommended to clean them in place.
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.
Cleaning supply air fan (T)
Remove the extract air filter (C), upper support for the HR cell (E) and the HR cell (D) from the
unit as instructed earlier. Pull the temperature sensor o from the upper part of the extract air
duct (G) (figure 1) and then remove the stopper screw from the lower edge of the duct. After
that the extract air duct comes out by turning and simultaneously pushing downwards (figures
2 and 3).Detach the temperature sensor from the resistor support (figure 4).Then detach the
support of the additional and post-heating resistors (H), fastened with two butterfl y nuts from
downward (figure 5). Then pull the resistors and the support from the unit and disconnect the
quick coupling of the resistor conductors. The fan can now be cleaned in place. If you wish
to detach the fan, lift it upwards and crank the plastic lock to the right using for instance a
chisel (figure 6).The fan then falls down and can be pulled out of the unit. Disconnect the
quick coupling of the fan conductors. When needed, detach the intermediate shaft of the
bypass damper from the end of the partition wall (figure 7).
Condensing water
During the heating season, humidity of extract air condenses into condensing 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 fl ow out from the
ventilation unit without hindrance. When carrying out maintenance, for instance in autumn
before the beginning of the heating season, make sure that the condensing water outlet in
the bottom tank is not clogged. You can check it by pouring a little water in the tank. Clean
if needed. Do not let water fl ow into electrical devices.
Cleaning extract air fan (P)
Remove the supply air fi lters G4 and F7.Open the four screws (F, figure 8) on the protective
cover of the extract air fan and remove the cover. You can now clean the extract air fan in
place (figure 9). If you wish to detach the fan, lift it upwards and crank the plastic lock of
the fan to the right using for instance a chisel (figure 6).The fan then falls down and can
be pulled out of the unit (figure 10. Disconnect the quick coupling of the fan conductors.
T
H
G i
F
P
F
1
4
7
2
5
3
6
8 9 10
180
141
180
141
43
Model RModel L
Model R
Supply air fan
Extract air fan
Condensing water
DV145SE

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Troubleshooting
MAINTENANCE INSTRUCTIONS
Symptom Cause Do this
1Outdoor air coming to the
dwelling is cold.
• 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.
• Check the insulation of the attic ducts.
• Check the cleanliness of the filters and heat recovery cell.
2The maintenance reminder
symbol ( ) is displayed
and the unit operates
otherwise normally.
• The maintenance reminder lights up the maintenance
reminder symbol in the main display of the control panel at
an interval of circa 4 months (factory setting).
• You may change the interval (see the operating instructions
for control panel, Section 3.2).
• Check the cleanliness of the filters and the unit. If needed, clean or
replace the filters. Also check the external grille.
• Reset the maintenance reminder symbol (see the operating
instructions for control panel, Section 3.1.).
3“Exh air sensor faulty”
message is displayed and
the unit is stopped.
• There is a fault in the freezing protection sensor. • Contact a maintenance company. Sensor mounting needs to be
checked and the sensor has to be replaced if necessary.
4“Sup. air sensor faulty”
message is displayed and
the unit is stopped.
• There is a fault in the supply air sensor. • Contact a maintenance company. Sensor mounting needs to be
checked and the sensor has to be replaced if necessary.
5“Ind. air sensor faulty”
message is displayed and
the unit is stopped.
• There is a fault in the extract air sensor. • Contact a maintenance company. Sensor mounting needs to be
checked and the sensor has to be replaced if necessary.
6“Out. air sensor faulty”
message is displayed and
the unit is stopped.
• There is a fault in the outdoor air sensor. • Contact a maintenance company. Sensor mounting needs to be
checked and the sensor has to be replaced if necessary.
7“Cell sensor faulty”
message is displayed and
the unit is stopped.
• There is a fault in the sensor of the heat recovery cell. • Contact a maintenance company. Sensor mounting needs to be
checked and corrected if necessary.
8"Bus fault" message is
displayed and the unit
operates at speed 1 (check
the fan speed).
• Wiring fault in the carbon dioxide sensor, in the control
panel or in the humidity sensor, or the cable is of the wrong
type.
• Contact a maintenance company. The connections have to be
checked and corrected if necessary.
9“Freezing alert” message
is displayed and the unit is
stopped.
• Antifreeze of the water-circulating radiator is active.
NOTE! If there is no non-freezing solution in the water of
the radiator, the radiator is at risk of freezing.
(Does not apply to the Vallox 145 SE unit)
• Immediately troubleshoot the situation. Consult a maintenance
company to find out if there is any 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.
10 The desired automatic
adjustment does not stay
on.
• There is a fault in the humidity or carbon dioxide sensor.
One of the sensors is broken or missing.
• Contact a maintenance company. Sensor mounting and connections
have to be checked. (Sensors are options.)
11 The fans are not running
and no indicator light is lit
at the control panel.
• Door switch may be broken or the door is not quite closed.
• The unit is out of power, for instance because a fuse has
blown.
• The glass tube fuse (located in the control card behind a
protecting plate) protecting the electronics inside the unit
may have blown.
• Check the door switch and fuses. The unit has a T800 mA glass-tube
fuse.
• If needed, contact a maintenance company (for instance to check
the glass tube fuse).
12 The unit does not obey the
control panel.
• 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.
13 “Carbon dioxide alarm”
message is displayed and
the unit is stopped.
• Carbon dioxide alarm. Carbon dioxide content has
exceeded 5000 PPM for two minutes. May be caused by
for instance a fire.
• If there is a fire, take the necessary steps.
• You can make the unit operational by disconnecting the plug from
the wall socket, waiting for 30 seconds and putting the plug back.
14 Filter guard symbol
() is displayed and the
unit operates
otherwise normally.
• The pressure in the filter guard (pressure dierence switch)
has risen above the adjustment value or speed is 7 or 8
(option).
• Check the cleanliness of the filters and the unit. If needed, clean or
replace the filters. Also check the external grille.
DV145SE

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What the units include can vary depending on the sales area.
S1
S2
S3
E1
E2
E3
S4 E4
S5 E5
S6
E6
S7 S8 E8
E7
0
50
100
150
200
250
300
350
400
0 10 20 30 40 50 60 70 80 90 100 110 120 130 140150 160
SFP 1,0 SFP 1,5 SFP 2,0
TECHNICAL DATA
Dimensions and duct outlets
Duct outlets, model R
Inner diameter of female outlet
collar ø 200 mm
1. Supply air to the dwelling
2. Extract air from
the dwelling to the unit
3. Exhaust air out
4. Outdoor air to unit
Duct outlets, model L
Inner diameter of female outlet
collar ø 200 mm
1. Exhaust air out
2. Outdoor air to unit
3. Supply air to the dwelling
4. Extract air from the dwelling
to the unit
Location of condensing water outlets,
R and L models
Fan speeds Extract air
flow
(l/s)
Combined input
power of fans
W
1 35 26
2 64 52
3 75 70
4 89 103
5 98 132
6 108 179
7 119 232
8 138 332
Sound values
Sound power level in supply air duct
(one duct) by octave band L W, dB
Sound power level in extract air duct
(one duct) by octave band LW, dB
ADJUSTMENT POSITION/AIR FLOW dm 3/s ADJUSTMENT POSITION/AIR FLOW dm3/s
Adjustment position
1234567812345678
Air flow dm3/s
36,2 56,3 67,3 80,7 92,9 105 116 128 40,5 63,8 73,8 87,9 98,8 110 122 136
Medium
frequency
of the
octave
band Hz
63 41 50 56 58 59 64 67 69 35 45 49 51 51 56 58 58
125 45 53 56 59 62 65 68 71 33 43 46 49 49 54 56 59
250 50 54 57 61 63 66 68 70 24 32 37 40 40 45 47 49
500 48 53 56 59 60 63 65 68 37 43 46 48 48 52 54 56
1000 45 54 57 60 62 64 66 67 30 36 39 42 42 46 48 50
2000 35 46 50 55 58 61 64 66 22 32 34 38 38 43 45 48
4000 26 41 46 51 54 58 60 63 16 20 22 25 25 31 33 36
8000 21 32 38 45 49 53 56 59 21 21 21 21 21 24 26 28
L
W
,dB
L
WA
, dB(A)
54 60 64 67 69 72 74 77 41 49 53 55 57 60 61 63
49 57 60 63 66 68 70 73 36 42 45 48 50 52 54 56
Sound pressure level dB (A) coming from the unit through the
envelope in the rooms where the unit has been installed
(10m2 sound absorption)
Airow DV145SE
ADJUSTMENT POSITION/AIR FLOW dm3/s
12345678
36/39 56/62 68/74 81/89 92/98 105/113 116/126 131/142
L
pA
, dB (A) 27 34 37 40 42 45 47 50
Measuring points
Measuring points after the connection
outlet. Fan curves indicate the total
pressure available for duct losses.
Input powers of fans
Model R in
the figure
Extract air
Supply air
Recommended
operating range
Supply/extract air flows
E = Extract air fan
S = Supply air fan
Input power (total) (W)
Air flow (max.) (dm
3
/s)
SFP =
SFP (Specific Fan Power) recommended value <2.5 (kW m
3
/s)
At a lower total pressure, SFP will be smaller at this speed.
Volume flow rate
Pressure loss in ducts. Total pressure, Pa
739
42
717
748
560
578
127
411
717
125
455
180
537
200
31
42
Model R
Model L
180
141
180
141
43
dm3/s
DV145SE

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What the units include can vary depending on the sales area.
GND
-
+
A
B
PWM1
PWM2
S RH2
S RH1
L
N
NO
NC
1
2
3
M1
16 V
0 V
0 V
230 V
L
TK
WT
L
NN
L L
L2
6
GND
2
PWM
1
PWM
54321
M
2x0.25 3x0.25
BN
WT
BN
GN
5310
1
0-10V DC
A B - +
M
S +
S +
+
1 2
S S
-
12x0.25mm2
N
GND
L1
L
13 12 11 10 987
GN=Model R
WT=Model L
24VDC 24VDC
NO
NC
BN BU
P
T
BU
YEGN
YE
BNBU
BU
YEGN
YE
90°C
130°C
R2
T1
90°C
130°C
R1
T1 T2 T2
GN
GR
BR
TECHNICAL DATA
Internal electrical connection DUPLEXVENT DV145 SE (code 3710)
If the mains connection
cable becomes damaged,
it must be replaced by the
manufacturer, authorised
maintenance company or
other qualified person in
order to avoid danger.
T Supply air fan
P Extract air fan
M1 Protective voltage transformer
230 VAC/16 VAC
L Earthed cord
TK Safety switch
R1 Additional heating radiator
90 °C and 130 °C with
overheat protection
R2 Post-heating radiator 90 °C
and 130 °C with overheat
protection
M Damper motor 24 V DC
Wire colours
BU = blue
BN = brown
WT = white
GN = green
RD = red
YE = yellow
YEGN = yellow-green
S PRESSURE SWITCH
S REMOTE MONITORING
S FIREPLACE SWITCH
S FAULT SIGNAL
S FAULT SIGNAL
Extract air 1.
Outdoor air to the unit 2.
Supply air to the dwelling 3.
Exhaust air 4.
Supply air from cell 5.
connection box (on top of the unit)
MOTHERBOARD
FAULT SIGNAL
RS-485 BUS %RH1 %RH2
FIREPLACE SWITCH FAN CONTROL
FUSE T400mA
DV145SE

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TECHNICAL DATA
2
NOMAK 2x2x0,5+0,5
1
2
1
S
+
A
2x0.5
+
2x0.5
A +
MAX. 1A, 24VDC
-
B M
0-10V DC
S
+
-
B M
0...10VDC
2x0.5
2x0.5
A
2x0.5
B - + M
S
+ S +
+
12
SS
GND
%RH1 %RH2
7010101
2011-09-12 pl
0-20mA
R
Mounting, removing and wiring of the control panel
The control panel is wired straight from the electrical connection box.
The control panel can also be connected in series with a CO2sensor or
another control panel. (See External electrical connection).
Control panel addresses
If two or more control panels are connected to the system, the addresses
of the control panels need to be changed.
For example 3 control panels
• Connect the first control panel to the unit and change its address
to 3.
• Connect the second control panel to the unit and change its address
to 2.
• Connect the third control panel and make sure that its address is 1.
If control panels have the same address, they go to bus fault state. In
this case, remove one of the control panels and change the address of
the other panel. The above mentioned situation can arise in connection
with the later installation of an additional control panel.
External electrical
connection
DUPLEXVENT DV145SE
METAL = M
WHITE 2 = B
ORANGE 2 = A
WHITE 1 = -
ORANGE 1 = +
2. TWISTED PAIR
1. TWISTED PAIR
NOTE!
Faulty connection of
the + wire DESTROYS
CONTROL PANEL
NOTE!
Faulty connection of the +
wire DESTROYS THE SENSOR
CONTROL PANEL 1
ONE OR MORE
1 INCLUDED AS STANDARD
CO2
SENSOR 1
ONE OR MORE
OPTION
REMOTE MONITORING
SHORT-CIRCUIT WIRE HAS TO BE
REMOVED BEFORE CONNECTION
FIREPLACE
SWITCH
Button switch
(self-resetting contact)
(POTENTIAL-FREE CONTACTS)
THE FIRST HUMIDITY SENSOR
IS CONNECTED TO REPLACE
RESISTOR R6k8
HUMIDITY SENSOR %RH2
OPTION
HUMIDITY SENSOR %RH1
OPTION
FAULT SIGNAL
FAULT SIGNAL
RS-485 BUS
FIREPLACE SWITCHFAN CONTROL
PLUG CONNECTION 16 A
1.2 m ON TOP OF THE UNIT
If the mains connection cable becomes
damaged, it must be replaced by the
manufacturer, an authorised maintenance
company or other qualified person in order
to avoid danger.
CONNECTION BOX IS SITUATED
ON TOP OF THE UNIT
CONNECTION BOX INSIDE
THE UNIT
Width 90 mm
Height 110 mm
Depth 23 mm
DV145SE

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5
576 165
579
MOUNTING
Mounting
DUPLEXVENT DV145SE has to be mounted in a place where
temperaturedoes not go below +10 °C. Without protective enclosure,
the unit must be located in a place with no acoustic disturbance:
storerooms, technical rooms etc.
Wall mounting
DUPLEXVENT DV145SE is mounted on the wall with a mounting
plate asshown in the adjacent figure. Make sure that the unit is
horizontally level after mounting.
Wall construction
Observe the wall construction during mounting. Avoid mounting the
unit on a hollow, echoing dividing wall and on a bedroom wall
because of sound conduction, or prevent sound conduction.
Condensing water connections
The delivery includes a water seal. By connecting a pipe to the water
seal the water condensing from extract air can be led to a floor
drain (not directly to the drain). The pipe must not rise after the water
seal. The unit has to be mounted horizontally level, so that condens-
ing water can get freely out of the unit.
The minimum distance between the top of the unit and the
finished ceiling surface is 30 mm.
Take into account that the unit
rises during mounting 10 mm
higher than the final height.
Bottom edge of wall bracket
Pipe outer diameter ø 12 mm
Adjust the base with adjusting legs to make it straight.
Remove the (4) rubber plugs at the bottom of the unit.
Put the unit on top of the base so that the bars of the base
fit in the holes at the bottom of the unit.
30
30
495
435
625
685
465
655
80
23 min.
30
133 min.
8
Ø8
Ø22
Threaded bar M8x35
Shorter thread up
Length of adjusting screw
thread 37 mm
Base (option)
DV145SE

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MOUNTING
Attic floor penetration plate (option)
When an attic floor penetration plate is used, the tightness of the
vapour barrier has to be ensured.
Minimum distance to side
walls is 15 mm.
547
8
747
15
15
0
DV145SE

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Exploded view and parts list DUPLEXVENT DV 145SE
No. Part Code
1 Fan assembly 1109200
2 Fan motor 935280
3 Wall mounting plate 3482100
4 Water seal 3292500
5 G4 coarse filter 978046
6 Filter stand 3466600
7 F7 filter 978158
8 Lower support for HR cell 3469000
9 HR cell 933270
10 Upper support for HR cell 3468900
11 Filter stand 3466500
No. Part Code
12 G4 coarse filter 978047
13 Bypass assembly, indicate if 3475900
Right- or left-handed
14 Damper motor 930613
15 Extract air outlet 985035
16 Protective voltage transformer 940150
17 Motherboard 949045
18 Safety switch 948370
19 Additional heater 1500 W 942220
20 Post-heater 900 W R 942211
Post-heater 900 W L 942210
No. Part Code
21 Door assembly 3476000
22 Door latch assembly 3355900
23 NTC sensor, sensor number 946140
must be indicated
24 Glass-tube fuse 5x20 952485
0.4 A slow
25 Control panel 3214000
26 Humidity sensor (option) 946142
27 Carbon dioxide sensor (option) 946146
3
4
1
2
2
1
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
25
26
27
24
DV145SE

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