Vallox 096 MV User manual

Manual
Models
Vallox 096 MV
Vallox 110 MV
Vallox 145 MV
Types
3722
3702
3712
MANUAL
Document
1.09.619 EN
Valid from
3.2.2015
Updated
18.1.2016
A
N
N
U
A
L
E
F
F
I
C
I
E
N
C
Y
R
A
T
I
N
G
O
F
E
X
T
R
A
C
T
A
I
R
H
E
A
T
R
E
C
O
V
E
R
Y
A+

2
MANUAL

3
© Vallox • We reserve the right to make changes without prior notice
CONTENTS
MANUAL
1. INTRODUCTION
•Main parts of the ventilation unit
•System description
•General safety instructions, guarantee and liability
•MyVallox Control control panel buttons
•Starting up and shutting down the unit
2. SETUP WIZARD
•Basic settings (setting the language, time and date)
•Expert settings (setting the password and access rights,
parental controls, fan settings, profile settings)
3. USING THE UNIT
•Ventilation profiles
•Temperatures and sensors
•Settings (filter, display settings, time and date, week clock,
turning the unit off)
4. MAINTENANCE
•Filters
•Heat recovery cell
•Fans
•Condensing water
•Troubleshooting
5. TECHNICAL SPECIFICATIONS
•Technical data, supply/extract air volumes, fan curves, sound
values, main components, measurement points, dimensions
and duct outlets
•Internal electrical connection
•External electrical connection
•Heating/cooling radiator operation chart
6. INSTALLATION
•Wall mounting
•Measuring tubes
•Ceiling mounting
•Floor mounting
•Condensing water
7. CERTIFICATE OF CONFORMITY
8. EXPLODED VIEW AND PARTS LIST
9. USER LEVEL DIAGRAMS
4
10
19
38
44
56
60
61
64
NOTE:
You can find your MyVallox account at www.MyVallox.com

4
INTRODUCTION
MAIN PARTS OF THE VENTILATION UNIT
R model in the figure
EXTRACT AIR FAN (BEHIND THE PROTECTIVE COVER)
SUPPLY AIR FAN (BEHIND THE EXTRACT AIR DUCT)
OUTDOOR AIR FILTER F7
HEAT RECOVERY CELL
SUMMER/WINTER DAMPER
OUTDOOR AIR FILTER G4
EXTRACT AIR FILTER G4
POST-HEATING RADIATOR (BEHIND THE EXTRACT AIR DUCT)
SAFETY SWITCH
CONTROL PANEL
CARBON DIOXIDE SENSOR
HUMIDITY SENSOR
INTERNAL HUMIDITY SENSOR
INTRODUCTION

5
© Vallox • We reserve the right to make changes without prior notice
INTRODUCTION
INTRODUCTIONINTRODUCTION
SYSTEM DESCRIPTION
Modbus
Internet
Router
WLAN/LAN
WLAN
Additional switch
Sensors

6
DIFFERENCES BETWEEN THE UNITS
• Power
• Size
• Vallox 096 MV does not have an additional heater. Vallox 110
MV and Vallox 145 MV have an additional heater.
• Weight
• In the model Vallox 096 MV, there is a sealing tape at the
bottom of the heat recovery cell. In other models, there is a
separate sealing bar under the heat recovery cell.
• Standard delivery options vary from country to country.
• The available options vary from country to country.
Mounting options:
• Models Vallox 096 MV and Vallox 110 MV can be mounted
either on the wall, or on the ceiling by using a mounting plate
(optional). These models cannot be mounted on the floor.
• Model Vallox 145 MV can be mounted either on the wall, or
on the floor by using a floor rack (optional). This model cannot
be mounted on the ceiling.
GENERAL SAFETY INSTRUCTIONS
Safe and appropriate handling requires knowledge of the basic
safety regulations, and of the intended use of the ventilation
system. Read this manual before operating the ventilation unit.
Keep this manual for later use. If you lose the manual, it can be
downloaded from our website.
This user manual contains all important hints for operating the
system safely. All persons who operate and maintain the ventilation
system must follow the instructions provided in this manual.
Furthermore, all local accident prevention regulations must be
observed.
INTENDED USE
All Vallox ventilation units have been designed to provide
appropriate and continuous ventilation so as to present no threat
to health and to maintain structures in good condition.
GUARANTEE AND LIABILITY
The guarantee and liability exclude damage resulting from:
• Unintended use of the ventilation system or the control unit
• Improper mounting, initial operation and operation
• Operating the ventilation system with a defective safety
system
• Ignoring hints for transportation, mounting, operation and
maintenance
INTRODUCTION
IMPORTANT
For further information, go to
www.vallox.com
INTRODUCTION

7
© Vallox • We reserve the right to make changes without prior notice
Change profile button. This button allows you to
change the ventilation profile of the unit.
Profile Information button. This button allows you to
view the currently active profile information.
Temperature button. Pressing this button displays
information on temperatures and sensors.
Settings button. Press this button to open the settings.
Back button. Pressing this button takes you backwards in
the menu.
Left arrow button. Pressing this button takes you to the
left in the menu.
Right arrow button. Pressing this button takes you to the
right in the menu.
OK button. Press this button to accept the selected
option.
Select button. Press this button to select an option from
the list.
Edit button. Press this button to edit settings.
Plus button. Press this button to:
•Increase the value of the selected setting.
•Move to the next menu item.
•Move from a one-day view to a week view in the
temperature, relative humidity of air and carbon
dioxide level graphs.
Minus button. Press this button to:
•Reduce the value of the selected setting.
•Return to the previous menu item.
•Move from a week view to a one-day view in the
temperature, relative humidity of air and carbon
dioxide level graphs.
Up arrow button. Pressing this button takes you upwards
in the menu.
Down arrow button. Pressing this button takes you
downwards in the menu.
Statistics button. Pressing this button opens the
temperature, relative humidity of air and carbon dioxide
level graphs (1 day or 1 week).
These icons indicate the hierarchy level of the settings.
This icon indicates when the feature is turned off at your
user level. The parental controls lock code is 1001.
BUTTON DESCRIPTION
INTRODUCTION
NOTE
The MyVallox Control control panel
contains the buttons described in the
following table. You can press the
graphical user interface buttons by
using the ring-shaped buttons below
the control panel. The control panel
does not have a touch screen.
• Unauthorized structural alteration and changes of the
programming
• Disasters due to extraneous elements and force majeure
INSTALLATION
Installation and setup should be carried out only by qualified
experts. Electrical installations and connections must be
carried out only by an electrician and in compliance with local
regulations.
CONTROL PANEL BUTTONS
INTRODUCTION

8
INTRODUCTION
INTRODUCTION
INTRODUCTION
In order to ensure that the indoor air presents no harm to health
and remains optimal also for the structures of the apartment,
ventilation must be kept on without disruptions. Even for longer
holidays, it is not advisable to stop the ventilation, because the
indoor air will become stuffy and, during the heating season, the
indoor air humidity may condense in the ventilation ductwork and
structures, causing moisture damage.
You can control and automate the Vallox ventilation unit operation
in the following ways:
• Through the control panel installed in the building
• Through the MyVallox Home local network connection and
the web interface
• Through the MyVallox Cloud cloud service and the web
interface
• Through a remote monitoring service or building automation
that uses voltage signals or Modbus messages
The required ventilation may also be adjusted automatically with
the optional carbon dioxide and humidity sensors. When these
are used, ventilation remains optimal even when the apartment is
unoccupied.
Each user can use the Week clock to adjust the ventilation to fit
their individual lifestyle.
WARNING
The unit is not intended for use by children under 8 or by persons
with reduced sensory, physical or mental capabilities, or whose
lack of knowledge and experience do not ensure safe operation
of the unit.
Such persons can use the unit under supervision, or by following
the instructions of someone who is responsible for their safety.
TIP
The MyVallox Control control panel automatically switches to
the sleep mode when the pre-set Sleep time has elapsed. To
reactivate the MyVallox Control control panel, press any button.

9
© Vallox • We reserve the right to make changes without prior notice
INTRODUCTION
The ventilation specialist has made the ventilation system basic
settings, based on the ventilation plan. The basic settings are:
• User interface language.
• Time and date.
• System administrator password. The installer has given you the
system administrator password.
• Parental controls, if turned on.
• Fan settings.
• User profile settings, such as the temperature.
If you are satisfied with the basic settings made by the installer, do
not make changes to them.
STARTING THE UNIT
If you are starting the ventilation unit for the first time or after a
maintenance procedure, first connect it to the mains. During the
start-up, the diagnostics display will appear for a few seconds,
after which the main display of the At home profile opens.
If the ventilation unit was turned off from the control panel (see
Turning the Unit Off), you can start it by pressing any control panel
button.
NOTE
The first launch of the unit may take a while, as the control panel
will format its software and verify that it has the latest software
version.
TURNING THE UNIT OFF
To turn the ventilation unit off:
1. Select Settings > Turn unit off.
2. Press the OK button.
3. The system asks for confirmation.
4. Press the OK button.
5. The ventilation unit has now been turned off.
INTRODUCTION

10
SETUP WIZARD
BASIC SETTINGS
SETUP WIZARD
1. Start the Vallox ventilation unit by plugging in the power cord
to the power outlet.
2. When you start the Vallox ventilation unit for the first time, the
Vallox logo is shown on the MyVallox Control control panel.
3. Press the OK button.
4. The setup wizard is launched.
SELECTING THE LANGUAGE
Select the user interface language as follows:
1. Use the arrow buttons to select the language you want, for
example, English:
2. Press the OK button.
3. The selected language is now English.
SET THE TIME
When the setup wizard prompts you to set the date and time, the
Time and date display opens first:
1. Use the Plus and Minus buttons to set the hours.
2. Press the Right arrow button.
3. Use the Plus and Minus buttons to set the minutes.
4. The time is now set.
5. Proceed to the next phase by pressing the Right arrow
button.
SET THE 24- OR 12-HOUR CLOCK
By default, the system uses the 24-hour clock.
To use the 24 hour clock, proceed to the next step by pressing the
Arrow right button.
To use the 12-hour clock:
1. Press the Minus button. The 24-Hour Time setting value is
changed to Off.
2. Proceed to the next phase by pressing the Right arrow
button.

11
© Vallox • We reserve the right to make changes without prior notice
BASIC SETTINGS
SETUP WIZARD
SET THE AUTOMATIC DAYLIGHT SAVING TIME
By default, the system automatically switches to the summer time.
To use the automatic daylight saving time, proceed to the next
step by pressing the Arrow right button. To use the manual daylight
saving time setting:
1. Press the Minus button. The Dayl.Saving Time setting value is
changed to Off.
2. The manual daylight saving time setting is now on.
3. Proceed to the next phase by pressing the Right arrow
button.
SET THE DATE
1. Use the Plus and Minus buttons to set the date.
2. Press the Right arrow button.
3. Use the Plus and Minus buttons to set the month.
4. Press the Right arrow button.
5. Use the Plus and Minus buttons to set the year.
6. Press the OK button:
7. The date is now set.
COMPLETING THE SETUP
Once you have completed the basic settings for the setup, the
acknowledgement display opens.
If you want to continue and make the advanced settings for the
ventilation unit, press the OK button.
If you want to interrupt the setup and use the ventilation unit on
factory settings, press the Back button: You can make the expert
settings for the ventilation unit later.
EXPERT SETTINGS
The following sections describe the Vallox ventilation unit setup
wizard phase, where you make the expert settings.
IMPORTANT
Some deployment phases require special equipment, such as an
air flow meter.

12
SETUP WIZARD
EXPERT SETTINGS
PASSWORD AND ACCESS RIGHTS
Once you have finished up making the basic settings, the setup
wizard moves on to setting the system password.
NOTE
If you set the password as 0000, the password inquiry is not used.
1. The setup wizard for Password and access rights opens.
2. Set the first digit of the password by using the Up arrow and
Down arrow buttons. Proceed to the next digit by pressing the
Right arrow button.
3. Set the second, third and fourth digit in the same manner as
the first digit.
4. Press the OK button.
5. The password is now set.
USER LEVEL
There are three user levels:
Ć Extensive — On the extensive user level, the user can access
every menu on the control panel.
Ć Normal — On the normal user level, the user's access to
some menus is restricted.
Ć Limited — The users on the limited user level can only carry
out the basic tasks required to operate the ventilation unit.
For more information on user levels, see Chapter 9, User level
diagrams.
To set the user level, proceed as follows:
1. The setup wizard for User level opens.
2. Use the Plus and Minus buttons to set the user level.
3. Press the Right arrow button.
4. The user level is now set.
PARENTAL CONTROLS
Parental controls lock the control panel so that no damage can
be done to the ventilation unit by random pressing of the control
panel buttons.
To set the parental controls, proceed as follows:
1. The setup wizard for Password and access rights opens.
2. Use the Plusand Minus buttons to turn the parental controls
on or off.
3. Press the OK button.
4. The parental controls are now set.
ENTER THE NEW
PASSWORD HERE:
PARENTAL CONTROLS
ACCESS CODE:
1 0 0 1

13 © Vallox • We reserve the right to make changes without prior notice
EXPERT SETTINGS
SETUP WIZARD
FAN SETTINGS
The following sections describe how to set the output ratio
between the supply and extract air fans.
IMPORTANT
Adjust the air flows according to the values specified in the
ventilation plan. It is recommended that the air flows be adjusted
without having to choke the air flows at the valves. This is the most
energy-efficient set up.
First, set both values as close to the ideal value as possible
by looking at the supply and extract air fan curves. If the ratio
between the air flows is very high at first, the ventilation unit may
have to carry out extra defrosting cycles in sub-zero temperatures,
thus making adjustment of the air flows more complicated. Check
the air flows by measuring them at the valves, and fine-tune the
percentage values as required.
NOTE
If the outdoor air is extremely cold (below -10°C on an aluminium
cell or below -3°C on a plastic cell), the ventilation unit may have
to defrost the heat recovery cell. If this happens, the Defrosting
icon will be displayed on the control panel. The air flows cannot be
adjusted during defrosting.
SUPPLY AIR
To make the supply air settings, proceed as follows:
1. The setup wizard for Fan settings opens.
2. Use the Plus and Minus buttons to set the supply air volume
as a percentage of the maximum output ratio. The fan speed
(1/min) will change accordingly.
3. Once you have set the supply air fan settings, press the Right
arrow button.
EXTRACT AIR
To make the extract air settings, proceed as follows:
1. The setup wizard for Fan settings opens.
2. Use the Plus and Minus buttons to set the extract air volume
as a percentage of the maximum output ratio. The fan speed
(1/min) will change accordingly.
3. Press the OK button.
4. The extract air fan speed is now set.
WARNING
The supply and extract air settings
have been completed by a
specialist during setup of the Vallox
ventilation unit. These settings
should be changed only when the
ventilation unit is reconfigured, and
not at any other time.

14
SETUP WIZARD
EXPERT SETTINGS
PROFILE SETTINGS
The following sections describe how to make ventilation settings for
the system profiles.
AT HOME PROFILE
To make the At home profile settings, proceed as follows:
1. The setup wizard for At home profile opens.
NOTE
Once you have set the basic ventilation air flow rates, the higher
percentage value will by default be set to the At home profile fan
speed value. It is recommended that this basic ventilation setting
be used for the At home profile. However, the setting can be
changed as required.
2. Use the Plus and Minus buttons to set the At home profile
fan speed as a percentage of the maximum output ratio.
3. The At home profile fan speed value is now set.
4. Press the Right arrow button.
5. The temperature setup opens.
6. Set the desired supply air temperature for the At home profile
by using the Plus and Minus buttons. You can adjust the
temperature in the range +10°C ... +25°C.
7. The At home profile supply air temperature is now set.
8. Press the Right arrow button.
9. The setup for automatic fan speed control based on the
relative humidity opens.
10. Use the Plus and Minus buttons to select whether the
automatic fan speed control, based on the relative humidity
of air, is used or not.
11. The automatic fan speed control, based on the relative
humidity of air, is now set.
12. Press the Right arrow button.
13. The setup for automatic fan speed control based on the
carbon dioxide level opens.
14. Use the Plus and Minus buttons to select whether the
automatic fan speed control, based on the carbon dioxide
level, is used or not.
15. The automatic fan speed control, based on the carbon
dioxide level, is now set.
16. Press the OK button.

15 © Vallox • We reserve the right to make changes without prior notice
EXPERT SETTINGS
SETUP WIZARD
AWAY PROFILE
To make the Away profile settings, proceed as follows:
1. The setup wizard for Away profile opens.
NOTE
Once you have set the fan speed for the At home profile, the fan
speed for the Away profile will by default be set to -30% of the At
home profile fan speed. It is recommended that this fan speed
setting be used for the Away profile. However, the setting can be
changed as required.
2. Use the Plus and Minus buttons to set the Away profile fan
speed as a percentage of the maximum output ratio.
3. The Away profile fan speed value is now set.
4. Press the Right arrow button.
5. The temperature setup opens.
6. Set the desired supply air temperature for the Away profile
by using the Plus and Minus buttons. You can adjust the
temperature in the range +10°C ... +25°C.
7. The Away profile supply air temperature is now set.
8. Press the Right arrow button.
9. The setup for automatic fan speed control based on the
relative humidity opens.
10. Use the Plus and Minus buttons to select whether the
automatic fan speed control, based on the relative humidity
of air, is used or not.
11. The automatic fan speed control, based on the relative
humidity of air, is now set.
12. Press the Right arrow button.
13. The setup for automatic fan speed control based on the
carbon dioxide level opens.
14. Use the Plus and Minus buttons to select whether the
automatic fan speed control, based on the carbon dioxide
level, is used or not.
15. The automatic fan speed control, based on the carbon
dioxide level, is now set.
16. Press the OK button.

16
SETUP WIZARD
EXPERT SETTINGS
BOOST PROFILE
To make the Boost profile settings, proceed as follows:
1. The setup wizard for Boost profile opens.
NOTE
Once you have set the fan speed for the At home profile, the fan
speed for the Boost profile will by default be set to +30% of the At
home profile fan speed. It is recommended that this fan speed
setting be used for the Boost profile. However, the setting can be
changed as required.
2. Use the Plus and Minus buttons to set the Boost profile fan
speed as a percentage of the maximum output ratio.
3. Press the Right arrow button.
4. The temperature setup opens.
5. Set the desired supply air temperature for the Boost profile
by using the Plus and Minus buttons. You can adjust the
temperature in the range +10°C ... +25°C.
6. Press the Right arrow button.
7. The setup for automatic fan speed control based on the
relative humidity opens.
8. Use the Plus and Minus buttons to select whether the
automatic fan speed control, based on the relative humidity
of air, is used or not.
9. Press the Right arrow button.
10. The setup for automatic fan speed control based on the
carbon dioxide level opens.
11. Use the Plus and Minus buttons to select whether the
automatic fan speed control, based on the carbon dioxide
level, is used or not.
12. Press the Right arrow button.
13. A display for setting the profile timer opens.
14. Use the Plus and Minus buttons to select whether the profile
timer function is used or not. The options are:
ĆOn — When the timer is on, the Boost profile is used only
for the period specified in the timer.
ĆOff — When the timer is off, the Boost profile is used until
you (or the Week clock) change the profile.
15. Press the Right arrow button.
16. A display for setting the profile timer duration opens.
17. Set the profile timer duration in minutes by using the Plus and
Minus buttons.
18. Press the OK button.

17 © Vallox • We reserve the right to make changes without prior notice
EXPERT SETTINGS
SETUP WIZARD
FIREPLACE PROFILE
To make the Fireplace profile settings, proceed as follows:
1. The setup wizard for Fireplace profile opens.
2. Set the profile timer duration in minutes by using the Plus and
Minus buttons.
3. The profile duration is now set.
4. Press the Right arrow button.
5. A display for setting the profile supply air fan speed opens.
6. Use the Plus and Minus buttons to set the supply air fan
speed of the Fireplace profile as a percentage of the
maximum output ratio.
TIP
It is recommended that a higher supply air fan speed be used in
the Fireplace mode to create overpressure in the ventilation zone.
Reducing the extract air fan speed is not recommended.
7. The Fireplace profile supply air fan speed is now set.
8. Press the Right arrow button.
9. A display for setting the profile extract air fan speed opens.
10. Use the Plus and Minus buttons to set the extract air fan
speed of the Fireplace profile as a percentage of the
maximum output ratio.
11. The extract air fan speed of the Fireplace profile is now set.
12. Press the Right arrow button.
13. A display for setting the profile timer opens.
14. Use the Plus and Minus buttons to select whether the profile
timer function is used or not. The options are:
ĆOn — When the timer is on, the Fireplace profile is used
only for the period specified by the timer.
ĆOff — When the timer is off, the Fireplace profile is
used until the profile is changed, either manually or
automatically by the Week clock.
15. The profile timer function is now set.
16. Press the OK button.
17. The Fireplace profile settings are now complete.

18
SETUP WIZARD
FINISHING THE SETUP
Once you have completed all phases of the setup, a Setup done!
message will be shown.
Finish up the setup, as follows:
1. To go back to change a value, use the arrow buttons to
select the desired line and press the OK button.
2. Repeat the selected setup phase or phases, until you are
satisfied with the settings.
3. When you are satisfied with the settings, use the arrow buttons
to select Start and press the OK button.
EXPERT SETTINGS

19
© Vallox • We reserve the right to make changes without prior notice
USING THE UNIT
VENTILATION PROFILES
THE VALLOX VENTILATION UNIT HAS FOUR VENTILATION PROFILES:
AT HOME
Use this ventilation
profile when the
apartment or
the premises is
occupied
AWAY
Use this ventilation
profile when the
apartment or premises
are unoccupied, e.g.
during a trip or other
long absence.
FIREPLACE PROFILE
Use this ventilation profile when, for
example, you are making a fire in
the fireplace. This profile is primarily
used to create momentary
overpressure in the apartment.
VENTILATION
BOOST
Use this profile to increase
the ventilation rate, e.g.
when there are more
people than usual in the
apartment or elsewhere
on the premises.
SYMBOLS FOR VENTILATION PROFILES
The following symbols are used on the main displays of
the profiles: Table 2. Profile symbols
SYMBOL DESCRIPTION
When this symbol appears on the display, either the At home, Away or Boost profile is in
use. The Week clock is turned off.
When this symbol appears on the display, either the At home, Away or Boost profile is in
use. The Week clock is on.
When this symbol appears on the display, the Fireplace profile is in use. The Week clock
might be turned on.
These symbols indicate the fan speed of the currently active profile. The smallest fan
icon indicates that the Away profile is in use, and the largest fan icon indicates that the
Boost profile is being used.
Droplet symbols indicate the relative humidity of air. The symbols are:
• One drop: — The humidity sensor has been successfully installed and the relative
humidity of air is normal.
• Two drops — The relative humidity of air is slightly higher than normal. The fan speed
will be automatically increased if automatic adjustment is allowed.
• Three drops — The relative humidity of air is significantly higher than normal. The fan
speed will be automatically increased if automatic adjustment is allowed.
These symbols indicate the carbon dioxide level in the air. The colour codes are:
• Green — The carbon dioxide sensor has been installed and the carbon dioxide
level is normal.
• Orange — The carbon dioxide level is slightly higher than normal. The fan speed will
be automatically increased if automatic adjustment is allowed.
• Red — The carbon dioxide level is significantly higher than normal. The fan speed
will be automatically increased if automatic adjustment is allowed.
Example of a profile main display

20
USING THE UNIT
VENTILATION PROFILES
CHANGING THE PROFILE
To change the ventilation profile, proceed as follows:
1. Press the Change profile button until the desired ventilation
profile icon appears on the display.
2. Wait until the main display of the ventilation profile appears.
3. The ventilation profile has been changed.
VIEWING VENTILATION PROFILE
INFORMATION
VIEWING THE AT HOME PROFILE INFORMATION
To view the At home profile settings, proceed as follows:
1. Open the main display of the At home profile.
2. Press the Profile information button.
3. The first information display for the profile opens.
This display shows the following information:
• Supply air — Indicates the temperature of the air blown to
the apartment and its set value (in brackets), if the supply air is
warmer than the set value.
• Outdoor air — Indicates the outdoor air temperature.
• Fan speed — Indicates the fan speed. If the automatic fan
speed boost is turned on, the set value is shown in brackets
first followed by the actual fan speed.
• Cell status — Indicates the status of the ventilation unit heat
recovery cell. The status options are:
ĆHeat recovery — The heat recovery cell heats the air
streaming in from outdoors.
ĆCooling — The heat recovery cell cools the air streaming
in from outdoors.
ĆCell bypass — The inflowing air bypasses the heat
recovery cell.
ĆDefrosting — The heat recovery cell is being defrosted.
4. Press the Right arrow button.
5. The second information display for the profile opens.
This display shows the following information:
• Humidity — Indicates the highest relative humidity of air
measured by the sensors.
• Carbon dioxide — Indicates the highest carbon dioxide
level measured by the sensors.
• Change filters — Indicates the next recommended filter
change date.
• Days in use — Indicates how long the unit has been running.