Vaventis Fresh-r On-The-Wall User manual

0
Maintenance Manual
On-The-Wall and In-The-Wall

1
Preface
Dear customer,
Thank you for purchasing the Vaventis Fresh-r. The Vaventis Fresh-r is a decentral ventilation
unit with heat recovery. The Fresh-r takes fresh air from outside, while expelling old air. The
incoming fresh air is pre-warmed by the warm outgoing stale air.
There are two types of Fresh-r: in-the-wall and on-the-wall. Beside these two types there also
two variations: Fresh-r standard and Fresh-r Everywhere. This manual contains all the
information needed to quickly familiarize yourself with the product. We kindly ask you to
carefully read this information before using the product.
This manual is intended for the end user.
The information in this manual is important for the correct and safe use of the product.
With the table of contents, you will be able to find the right information in the manual quickly.
This is the original manual. Besides this manual there is also an installation manual available.
Some illustrations might differ from the actual model you have purchased.

2
1. Intended use
The Vaventis Fresh-r is a decentral ventilation unit with heat recovery. The Fresh-r takes heat
from the stale air it expels and uses it to warm up the fresh air it brings in from outside.
It improves air quality for a healthy indoor air quality and at the same time reduces your energy
bill. No ducting is needed for this unit which makes installation easier than a conventional HRV
system.
The Fresh-r is equipped with CO2, RH and Temperature sensors and has an intelligent control
system and other than conventional HRV’s the Fresh-r also works efficient at sub zero
temperatures.
The Fresh-r functions in four modes:
I. Automatic mode
In the automatic mode the Fresh-r measures the CO2, RH, temperature, flows and uses
the measurements to calculate the efficiency and optimum airflow from each fan.
II. Dewpoint protection mode
This is a sub-mode of automatic mode. The Fresh-r enters this mode when necessary, to
avoid the formation of condensation on the walls and windows within your home. This
mode will be activated automatically upon detection that it is necessary.
III. De-snowing mode
In the defrost mode the Fresh-r de-freezes the heat exchanger by blowing warm air out,
so it can work again at optimum efficiency. Defrost mode cannot be entered into
manually. This mode will be activated automatically upon detection that it is necessary.
IV. Manual mode
In the manual mode you can change the fan speed in six settings by pressing the
buttons accordingly on the user interface.

3
2. Target group
The manual describes how to use and maintain the Fresh-r. The Fresh-r may only be used
and maintained by people who understand the Fresh-r and understand this user manual.
3. General safety instructions
oDo not perform any maintenance activities other than those specified in this manual.
oDo not remove the electronical protection. The electrical components are hidden safely.
oMake sure the main switch is in OFF position when replacing the Heat exchanger.
oDo not put the main switch in ON position when the Heat exchanger is taken out.
oMake sure the main switch is in OFF position when replacing the fan assembly.
oDo not put the main switch in ON position when the fan assembly is taken out.
oMake sure the main switch is in OFF position when performing the maintenance
activities.
oDo not place any object in front of the Fresh-r (min. distance 50 cm). This hinders the air
flow.
oMake sure the CO2indicator is always green or orange. Open a door or/and window if
the CO2indicator is red.
oDo not clean the Heat exchanger with hot water (max. 40 degrees). This can damage the
Heat exchanger permanently
oDo not touch, brush or scrub the copper wire of the heat exchanger.

4
Figure 1 Fresh-r main components
A. Door F. Heat exchanger clamp
B. Control panel G. Condensate shelf
C. ON/OFF switch (I is ON, 0 is OFF) H. Extract cover (Everywhere versions)
D. Fan assembly I. Filter (optional)
E. Heat Exchanger
4. Operating the product
How can I use the Fresh-r in automatic mode?
The Fresh-r will always enter automatic mode upon start-up. It will remain in automatic unless
the user switches it into manual mode.
In the automatic mode the Fresh-r measures the CO2, RH, temperature, flows and uses the
measurements to calculate the efficiency and optimum airflow from each fan.

5
To ensure good air quality, make sure that:
oNo objects are placed in front of the Fresh-r (min. distance 50 cm)
oThe Fresh-r grilles are installed
oThe door of the Fresh-r is closed
How can I change the fan speed manually?
The Fresh-r starts in automatic mode. You can change the fan speed manually by selecting one
of the six fan speed settings.
To change the fan speed, do the following:
oOpen the door.
oTo increase the fan speed, press one or more times
on the large fan speed button.
oTo decrease the fan speed, press one or more times
on the small fan speed button.
oThe automatic indicator does not light up. After
approximately 2 hours the Fresh-r will return to
automatic mode.
oWhen the Fresh-r is operating in manual mode the fan
speeds will remain at the setting that has been selected.
oAutomatic mode can be reselected at any time by
pressing the top button on the control panel.
How can I set the Fresh-r in de-snowing mode?
You cannot manually set the Fresh-r in de-snowing mode. The Fresh-r will only start the de-
snowing mode when necessary.
How can I set the Fresh-r in Dewpoint protection mode?
You cannot manually set the Fresh-r in dewpoint protection mode. The Fresh-r will only start the
dewpoint protection mode when necessary.
Figure 2 Control panel user interface

6
5. What do the symbols and buttons on the control
panel mean?
The automatic indicator indicates the type of mode that the Fresh-r is operating in
There are two modes:
oAutomatic mode
oManual mode
The different modes are explained in the table below.
Type of mode
Automatic indicator
Explanation
Automatic mode Light is on In the automatic mode the Fresh-r measures the
CO2, RH, temperature, flows and uses the
measurements to calculate the efficiency and
optimum airflow from each fan.
Sub mode -
Dewpoint protection
mode
Light is on In the dewpoint protection mode, the Fresh-r will
ventilate harder to remove excess humidity to
avoid the formation of condensation. You cannot
set the Fresh-r manually into dewpoint
protection mode
Sub mode Defrost
mode Light is on In the defrost mode the Fresh-r de-freezes the heat exchanger by blowing warm air out, so it
can work again at optimum efficiency. The
Fresh-r can only start automatically in a defrost
mode. You cannot set the Fresh-r manually into
defrost mode
Manual mode Light is off In the manual mode, you can change the fan
speed manually by pressing the raise or lower
fan speed button – see fig. 2 on page 5

7
What does the automatic button do?
Pressing the automatic button activates the automatic mode.
What do the fan buttons do?
You can change the fan speed manually. When you set a manual fan speed the Fresh-r will enter
manual mode. It will remain in manual mode for 2* hours unless it is put back into automatic
mode by the user.
What do the air flow indicators mean?
The six lights indicate the speed of the air flow. You can set the air flows in the following speeds:
Air Flow
Indicator Lamp
100% flow
6
th
upper air flow indicator lamp
85% flow
5
th
air flow indicator lamp
70% flow
4
th
air flow indicator lamp
55% flow
3
rd
air flow indicator lamp
40% flow
2
nd
air flow indicator lamp
25% flow
1
st
lower air flow indicator lamp
What do the smileys mean?
The smileys indicate the amount of CO2in the air
Type of Smiley
Colour of smiley
Meaning
Upper smiley
RED
Poor air quality
>2400 PPM CO2
Middle smiley
ORANGE
Medium air quality
>1200 PPM CO2
Lower smiley
GREEN
Excellent air quality
<1200 PPM CO2

8
6. What to do when a smiley lights up?
What to do when a smiley is continuously red?
If the smiley is red, the level of CO2in the air is a lot higher than intended. Do the following:
oOpen a window and/or door for fresh air.
oClose the window and/or door when the smiley is orange or green.
What to do when a smiley is orange?
If the smiley is orange, the level of CO2in the air is higher than 1200 ppm. You do not need to
perform any actions. The Fresh-r will automatically increase its ventilation capacity to reduce
the CO2 concentration.
What to do when a smiley is green?
If the smiley is green, the level of CO2in the air is below 1200 ppm. You do not need to
perform any actions.
How to perform software reset?
In case of malfunction, it is recommended to reset the software. To reset the software, switch the
Fresh-r off and on again using the toggle switch on the control panel – see item “C” on fig. 1
page 4.

9
7. Connect the Fresh-r to the internet
By connecting the Fresh-r to the internet you will benefit from automatic software updates. You
will also have access to data graphs showing actual performance values of the air temperature
and quality.
To connect your Fresh-r to the internet do the following:
oSwitch power of the Fresh-r OFF and switch the power ON again.
oWait for approximately 90 seconds until the unit starts to run and the CO2
indicator is illuminated.
oPress the middle button (increase fan speed) for approximately 15 seconds and release -
you will hear a beep. This indicates that the Fresh-r has entered WiFi access point mode
The following actions must be done with your smartphone, laptop or tablet.
Do the following:
oStart your device and go to settings.
oSelect WiFi
oSelect WiFly-EZX-XX of the list of WIFI devices.
oYour device will now connect to the Fresh-r WIFI module.
oOpen an internet browser, for example Google chrome.
oType 192.168.1.1 and confirm.
The Microchip settings page opens.
oSelect the Network cfg tab.
oPress refresh List.
oA list with Available Access Points will show.
oSelect your own router by its name.
NOTE
If your router name has spaces in it: for example “my router”,
the connection will fail. In that case, please change the name (SSID)
of your router to, for example,“myrouter”. For more information see
the manual of your router. After you have selected your router, a list
of technical details will show. Examine the value of RSSI: the RSSI
value should be at least -70dBm (eg -80 dBm).

10
oEnter your WiFi passphrase (wireless key, also called password) in the Passphrase box.
oTip: Check the “Show Passphrase” to visually check that you entered the correct
passphrase.
oPress save & reboot.
What to do if the connection fails?
oCheck the settings of your router. Please make sure that the
oWireless 2.4 Ghz configuration is set to mixed mode. See for more information the
manual of your router.
Please note that after connecting the Fresh-r to the internet, your mobile device will not detect
the Fresh-r anymore. This is normal. The Fresh-r is now connected to your server and in the near
future you will be able to read performance data graphs as well as receive automatic updates.
How can I view performance data and graphs?
Contact [e-mail] with your unit serial number and request a fresh-r.me web
access account. You will then receive a mail with login details

11
8. Maintenance
8.1 Half Yearly
oDo not perform any maintenance activities other than those specified in this manual.
oMake sure the main switch is in OFF position during replacing the Heat exchanger.
oDo not put the main switch in ON position when the Heat exchanger is taken out.
oDo not clean the Heat exchanger with hot water (max. 40 degrees). This can damage the
Heat exchanger permanently
oDo not touch, brush or scrub the copper wire of the heat exchanger.
Every half year the heat exchanger needs to be cleaned in order to keep the Fresh-r in
optimum performance.
To clean the Heat exchanger, do the following:
oOpen the door.
oPut the main switch in OFF position.
Fresh-r Filter model – remove the filter
oUnscrew the two thumb screws
oTilt the filter forward as shown below – if you have a filter with sensors you can now
detach the cabling – this is a small RJ45 plug that has a clip that needs depressing similar
to an internet cable plug.
oLift the filter free from the two hooks in the unibody
oCareful not to damage/penetrate the filter cartridge
Figure 3 - Filter thumb screws Figure 4 – Filter inserted into hooks on unibody

12
Figure 5 Top cover thumb screw
Figure 6 – Heat exchanger ready to be removed
Fresh-r Everywhere – remove the top panel
oTo remove the top panel, release the two retention screws, tilt the panel away from the
heat exchanger clamp and pull the panel downwards from the retention bracket at the
top of the unibody. There are two retention hooks at the top of the unibody similar to
those on the filter shown above.
Fresh-r air separator bar/heat exchanger clamp
oRemove the air separator bar by removing the two retention bolts – use a torx 25
oPull the separator bar straight away
oPull the Heat exchanger out the unibody
Figure 7 – Fresh-r middle bar separator

13
1
st
flush IN
1st flush
OUT
2nd flush
IN
2
nd
flush OUT
Top FRONT
Use one of the methods pictured below to flush the heat exchanger
OK OK OK NOT OK
Flushing the heat exchanger
oFlush water through the heat exchanger as directed below using warm water from i) a
shower head ii) garden hose iii) pressure washer
oAfter the 1st and second flush, flush water in the reverse direction in the same manner,
i.e Front -top and bottom & back side top and bottom
Some visible dirt and stains will remain – DO NOT BRUSH OR SCRUB the copper wire
Blast flush water down behind the
air guide up and down and on
both sides

14
NOTE
In an extreme case where the heat exchanger cleaning has been neglected
Flush as directed in the diagram using a pressure washer without chemical additives and for
maximum 10 minutes to avoid complete saturation of the gaskets.
oAfter flushing shake excess water from the heat exchanger and replace directly
oAssemble in reverse order of removal
oDo not use tools to tighten the thumb screws, if available lubricate threads with grease
(even olive oil can be used) This will make the thumb screws easier to turn by hand.
oOnce assembled switch the Fresh-r on and close the door
8.2 Annual Maintenance
Every year the filter needs to be replaced in order to keep the Fresh-r in optimum
performance.
To replace the filter, do the following:
oOpen the door.
oSwitch off
oRemove the filter as described above
oRemove the two wing nuts at the bottom and remove the filter brace
oRelease tension from the m8 countersunk nuts
oRemove and replace the filter cartridge
oRe- assemble - pinch top clamp tightly to the frame and tighten nuts, fit lower clamp.
oRe-mount filter carrier to Fresh-r. Switch on and close the door
Figure 8 Rear side of filter after removal from the Fresh-r

15
Every three years the area behind the fan needs to be cleaned in order to keep the Fresh-r
in optimum performance.
To clean the area behind the fan, do the following:
oOpen the door.
oPut the main switch in OFF position.
oRemove internal door (Everywhere version) and filter if fitted
oUn-clip the two electrical connections of the fan – they are dedicated connectors and
cannot be reconnected wrongly
oGently remove the rubber mounted temperature sensor being careful not to damage the
little wire protruding from the end – let it hang down in front of the heat exchanger
oThe two operations above may require several cable ties to be cut away – replace with
new afterwards
oUnscrew the 4 screws of the fan using a Torx T20.
oMake sure the rubber grommets don’t drop away and become lost.
oMove the fan assembly gently out the unibody.
Wing nuts holding filter brace
Countersunk M8 nuts holding top clamp. Push towards frame
(red arrows) when re-tightening
Figure 9 Top clamp
Figure 10 Lower clamp
f
Figure 11 Fan assembly as installed
Figure 14 Fan assembly wires unclipped

16
oUse a vacuum cleaner to clean the area behind the fan. Make sure you clean the
area carefully. You may damage the sensors.
oScrub the fan impeller clean with a brush – use wipes or a cloth if necessary.
oPut the fan assembly back into the unibody.
oMount the 4 screws of the fan, re-connect the electrical connection and replace the
temperature sensor into its mounting.
oReplace cable ties that have been cut away.
oRepeat above in order to clean the area behind the other fan.
oRe-instate everywhere panel and filter if previously removed.
oSwitch on and close the door
END
Figure 15 Fan assembly as removed
Figure 163 Brush dirt from impeller