Vallox Vallox 90 MV User manual

Manual
Model
Vallox 90 MV
Vallox 90K MV
Type
A3527
A3528
Document
D5316
Valid from
30.03.2020
Updated
16.03.2020
Ventilation units
MANUAL

2
INTRODUCTION............................... . . 2
Safety ...................................................... . 3
Installation ............................................. . . . . 3
Guarantee .................................................. . 3
Intended use ................................................ . 3
Disposal of the ventilation unit ................................ . 3
Safety signs used in the instructions .......................... . 4
Installation options........................................... . 4
System description .......................................... . 4
Ventilation unit control ....................................... . 5
Ventilation unit control options. .......................... . . . . 5
Connecting the ventilation unit to the cloud service ........ . . . . 5
Main parts .................................................. . 6
Vallox 90 MV........................................... . . . . 6
Main parts .................................................. . 7
Vallox 90K MV ......................................... . . . . 7
INSTALLATION.................................. . . 8
Vallox 90 MV................................................ . 8
Mounting on the wall ......................................... . 8
Mounting on the ceiling ...................................... . 8
Mounting the ceiling mounting plate...................... . . . . 8
Installing the ventilation unit to the ceiling mounting plate........ . 9
Attic floor penetration plate.............................. . . . . 9
Vallox 90K MV .............................................. 10
Mounting on the wall ......................................... 10
Installing the cooker hood .................................... 10
Measuring and adjusting the air flows of the ventilation unit ...... 10
Removal of condensing water ................................. 10
Vallox 90 MV, 90K MV ....................................... .11
Dimensions and duct outlets.................................. . 11
MAINTENANCE ................................ .12
Vallox 90 MV, 90K MV ....................................... 12
Before beginning maintenance work........................... 12
Changing the filters .......................................... 12
Cleaning the heat recovery cell ............................... 13
Condensing water ........................................... 13
Cleaning the fans ............................................ 14
Removing and cleaning the supply air fan (A) . . . . . . . . . . . . . . . . . 14
Removing and cleaning the extract air fan (B).............. . . . 14
Vallox 90K MV .............................................. 15
Cleaning the grease filter of the cooker hood ................... 15
Replacing the cooker hood lamp .............................. 15
NOTE
You can register your
Vallox MV ventilation
unit with the MyVallox
Cloud service and sign
in into your MyVallox
Cloud account at
www.myvallox.com.
CONTENTS
INTRODUCTION
TECHNICAL SPECIFICATIONS .... 16
Internal electrical connection ................................. 17
Vallox 90 MV........................................... . . . 17
Vallox 90K MV ......................................... . . . 18
External electrical connection................................ 19
Duct radiator operation...................................... 20
Duct radiator operation chart ................................. 21
In the outdoor air duct .................................. . . . 21
In the supply air duct.................................... . . . 21
External electrical connection for controlling the MLV duct...... 22
Exploded view and parts list ................................. 23
Vallox 90 MV........................................... . . .23
Vallox 90K MV ......................................... . . .24
Conformity certificates ...................................... 25

3© Vallox Oy - All rights reserved
SAFETY
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. Retain the manual for
later reference. If you lose the manual, it can be downloaded from our
website.
This user manual contains all the information necessary for safe
operation of the system. 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.
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.
GUARANTEE
The guarantee and liability exclude damage resulting from:
• Inappropriate use of the ventilation system or the control unit
• Incorrect or inappropriate installation, setup or use
• Neglect of instructions concerning transportation, installation, use,
or maintenance
• Structural or electronic modifications or changes made to the
software
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.
IMPORTANT
In order to ensure that the indoor air presents no harm to
health and remains optimal also for the structures of the
building, ventilation must be kept on without disruptions. It
is recommended that ventilation be left turned on during long
holidays also. This keeps the indoor air fresh and prevents
humidity from condensing in the ventilation ducts and structures.
It also reduces the risk of moisture damage.
DISPOSAL OF THE VENTILATION UNIT
Do not dispose of electronic devices with household waste. Follow
local laws and regulations on safe and ecological disposal of the
product.
NOTE
For further information,
go to www.vallox.com
INTRODUCTION
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.
Children must be
supervised and not be
allowed to play with the
device.

4
SAFETY SIGNS USED IN THE INSTRUCTIONS
INSTALLATION OPTIONS
• Vallox 90 MV can be mounted either on the wall, or on the ceiling by using
a mounting plate (optional).
• Vallox 90K MV can only be mounted on the wall.
NOTE
The standard
equipment and
available accessories
vary from country to
country.
DANGER
Indicates a hazard that
will result in death or
serious injury if not
avoided.
WARNING
Indicates a hazard that
can result in death or
serious injury if not
avoided.
IMPORTANT
Indicates a hazard that
can result in damage to
property or loss of data
if not avoided.
CAUTION
Indicates a hazard that
can result in minor or
moderate injury if not
avoided.
NOTE
Indicates essential
information about the
product.
TIP
Provides additional
information about the
use of the product and
its benefits.
INTRODUCTION
SYSTEM DESCRIPTION
1. Internet
2. WLAN
3. Router
4. WLAN/LAN
5. Additional switch
6. Sensors
MyVallox Cloud
MyVallox Home
Vallox MV
MyVallox Control
Modbus KNX
KNX bus
module
1
23
4
5
6

5© Vallox Oy - All rights reserved
INTRODUCTION
VENTILATION UNIT CONTROL
Ventilation unit control options.
Operation of the Vallox ventilation unit can be controlled by the
following means:
• Through the My Vallox Control panel installed in the building.
• Through the MyVallox Home local area network connection
and the MyVallox Home/Cloud user interface.
• Through the MyVallox Cloud service and the MyVallox Home/
Cloud user interface.
• Through a remote monitoring service or building automation
that uses voltage signals or Modbus messages.
In addition to the integrated humidity and carbon dioxide sensor,
ventilation can also be adjusted automatically by using the
optional carbon dioxide, humidity, or VOC (air quality) sensor.
When these are used, ventilation remains optimal even when
the dwelling is unoccupied. Each user can use the week clock to
adjust the ventilation to fit their individual lifestyle.
Connecting the ventilation unit to the cloud
service
The ventilation unit can be connected to the MyVallox Cloud
service. The cloud service allows for controlling ventilation
remotely also, using e.g. a smartphone or tablet. Also the unit
software is updated automatically through the cloud service.
To connect to the cloud service, the ventilation unit must be
connected to the Internet via LAN and registered with the cloud
service. At the same time you create a MyVallox Cloud account
for yourself. Read more about the service at www.myvallox.com.
NOTE
For the MyVallox Cloud/
Home instructions,
please go to www.
techmanuals.info/
ValloxMV/ENG/
onlinehelp/webhelp
IMPORTANT
Apartment-specific
ventilation units allows
residents to adjust the
ventilation eciency.
Ventilation is controlled
based on the need e.g.
through the cooker
hood, ventilation
control panel, or a
separate control centre.
In order to ensure that
the indoor air presents
no harm to health and
remains optimal also
for the structures of the
building, ventilation
must be kept on
without disruptions.
It is recommended
that ventilation be
left turned on during
long holidays also.
This keeps the
indoor air fresh and
prevents humidity
from condensing in
the ventilation ducts
and structures. It also
reduces the risk of
moisture damage.
IMPORTANT
Prolonged overpressure
can result in damage
to the structures of the
building.

6
Extract air fan
1
Supply air fan
2
Fine filter for supply air
3
Heat recovery cell
4
Bypass damper of the HR cell
5
Coarse filter for supply air
6
Coarse filter for extract air
7
R model in the figure
MAIN PARTS
Vallox 90 MV
Post-heating resistor
8
Safety switch 9
Internal humidity sensor 10
Internal carbon dioxide sensor 10
Control panel
11
Carbon dioxide sensor (optional)
12
Humidity sensor (optional)
13
VOC sensor (Optional) 14
5
11
12
13
8
9
3 1
7
2
6
4
14
10
INTRODUCTION
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
B

7© Vallox Oy - All rights reserved
Extract air fan
1
Supply air fan
2
Fine filter for supply air
3
Heat recovery cell
4
Bypass damper of the HR cell
5
Coarse filter for supply air
6
Coarse filter for extract air
7
Post-heating resistor
8
Safety switch 9
R model in the figure
MAIN PARTS
Vallox 90K MV
Internal humidity sensor 10
Internal carbon dioxide sensor 10
Control panel
11
Carbon dioxide sensor (optional)
12
Humidity sensor (optional)
13
VOC sensor (Optional)
14
Cooker hood
15
Damper button
16
Fan speed adjustment
17
5
8
9
3 1
7
2
6
4
15
16 17
11 12
13 14
10
INTRODUCTION
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
B

8
MOUNTING ON THE WALL
NOTE
Avoid mounting the unit on a hollow, echoing partition wall or
on a bedroom wall, or prevent the conduction of sound.
The minimum distance between the top of the unit and the
finished ceiling surface is 30 mm. Note that during mounting
the unit rises 10 mm higher than the final height.
Mount the ventilation unit on the wall with a mounting plate, as
shown in the adjacent figure. Make sure that the unit is horizontally
level after mounting.
MOUNTING ON THE CEILING
Model Vallox 90 MV can be equipped with an optional ceiling
mount plate. To attach the ceiling mounting plate:
• To the ceiling with M8 thread bars so that they stand the weight
of the unit.
• Horizontally, because the levelness of the ceiling mounting
plate determines the levelness of the unit.
• There is a 6 mm space between the rear edge of the ceiling
mounting plate and the wall.
• The minimum distance between the bottom surface of the
ceiling mounting plate and the false ceiling is 14 mm. When this
minimum distance is used, the distance between the top of the
unit mounted on the ceiling mounting plate and the ceiling is
around 2 mm.
Insulate the outdoor air and exhaust air duct against condensation
also between the unit and the ceiling mounting plate.
Mounting the ceiling mounting plate
1. Attach the M8 thread bars to the ceiling and turn the nuts (A) to
the bars.
2. Shorten the lower ends of the thread bars so that they will be
at no more than 25mm from the lower surface of the ceiling
mounting plate. Thread bars can be shortened only before the
ceiling mounting plate is installed.
3. Lift the ceiling mounting plate in place.
4. Push a rubber damper (B) and a washer (C) onto each thread
bar, and ensure that they touch the bottom of the cups of the plate.
5. Turn the nuts to make sure that the unit is horizontally level.
Lastly, fasten the screws.
1
2
A-A
A
A
max. 25
min. 14
2
1
6mm
AB
C
D
M8
INSTALLATION
INSTALLATION
NOTE
When installing the unit,
reserve a space of at
least 330 mm in front
of the unit for servicing
purposes.

9© Vallox Oy - All rights reserved
INSTALLING THE VENTILATION UNIT
TO THE CEILING MOUNTING PLATE
CAUTION
The ventilation unit is very heavy. Do not perform this
procedure alone.
1. Remove the front panel of the top part of the unit (1) (leave
it hanging from the air flow measuring tubes).
2. Place the connection box cables into the slot in the top part
of the side panel (2) and pull the connection box to the side
of the unit so that the cables remain in the slot.
3. Ensure that the condensing water insulation is in place in
the duct outlets of the extract air duct and of the duct that
comes to the unit from outside.
4. Lift the unit in its place on the ceiling mounting plate until
both locking wings (3) lock on the outer edge of the side
plate of the unit.
5. Visually check the tightness of the duct outlets and the
unobstructed passage of measuring tubes and electric
cables.
6. Put the front panel of the top part back in place.
Attic floor penetration plate
The attic floor penetration plate is optional. When an attic floor
penetration plate is used, the tightness of the vapour barrier
has to be ensured.
21
3
M8
TIP
You can detach the
unit from the ceiling
mounting plate by
pulling the spring-
loaded moulding to the
direction shown by the
arrow (more detailed
information provided
with the ceiling
mounting plate).
INSTALLATION

10
MOUNTING ON THE WALL
NOTE
Avoid mounting the unit on a hollow, echoing partition wall or
on a bedroom wall, or prevent the conduction of sound.
The minimum distance between the top of the unit and the
finished ceiling surface is 30 mm. Note that during mounting
the unit rises 10 mm higher than the final height.
Mount the ventilation unit on the wall with a mounting plate, as
shown in the adjacent figure. Make sure that the unit is horizontally
level after mounting.
INSTALLING THE COOKER HOOD
The cooker hood is installed on the bottom of the ventilation unit
with finger nuts (A), which are included in the accessory bag.
1. Open the bottom plate of the cooker hood, on which the grease
filter is mounted.
2. Lift the cooker hood against the bottom of the ventilation unit.
Feed the connection cord (B) at the same time inside the cooker
hood.
3. Fasten the cooker hood in place with finger nuts.
4. Pull the connection cord in place. Use line protection (C) where
required.
Observe in the figure:
1. Condensing water outlet
2. Exit hole for the condensing water outlet
3. Damper
MEASURING AND ADJUSTING THE AIR
FLOWS OF THE VENTILATION UNIT
The accessories delivered with the unit include four (4) air flow
measuring tubes. These can be inserted in the ducts to allow for
easier ventilation adjustment.
REMOVAL OF CONDENSING WATER
A B C
1
2
3
1
2
INSTALLATION
92
1
Ø6
16
NOTE
The Vallox Silent Klick
siphon package is
delivered with the unit.
Installation instructions
for the siphon are
enclosed with the
packaging, and can
also be found online at
www.vallox.com. When
the alternative siphon
installation method is
used, the ring seal and
the locking part must
be moved to the pipe
connection part that is
mounted on the wall.
597
689
151
24
172
727
75
28
28
38
38

11 © Vallox Oy - All rights reserved
Air flow measurement points
Measurement points after the outlet collar. The
fan curves indicate the total pressure accounted
for by duct losses.
A Supply air
B Extract air
C Supply
D Extract
DIMENSIONS AND DUCT OUTLETS
AB
C
D
Main parts
1. Extract air fan
2. Supply air fan
3. Fine filter for supply air
4. Heat recovery cell
5. Bypass damper of the HR
R model in the figure.
In the L model, the parts are mirrored
Dimensions and duct outlets
Duct outlets
Inner diameter of the
female collar: 125mm
1. Supply air from the unit to the
apartment
2. Extract air from the apartment to
the unit
3. Outdoor air to the unit
4. Exhaust air flowing outdoors
from the unit
8
9
5
4
7
3
1
2
6
597
157 157
117
83 83
83
243
360
377
3
42
1
1
2
3
4
597
157 157 117
83
83
243
360
377
83
L model
R model
INSTALLATION
cell
6. Coarse filter for supply air
7. Coarse filter for extract air
8. Post-heating resistor
9. Safety switch

12
B
C
A
D
S
B
C
A
E
F
G
BEFORE BEGINNING
MAINTENANCE WORK
The safety switch (S) automatically turns o the power
when the door of the unit is opened.
WARNING
Always disconnect the power plug before starting
the ventilation unit maintenance.
There are two unit models, left- (L) and right-handed (R).
The figure shows the right-handed model. In the right
handed version, outdoor air blows into the unit from the
right side of the centre line as shown in the instructions.
In the left-handed version, outdoor air blows into the unit
from the left side. Also the position of the filters, HR cell
bypass damper, and heating resistor is mirrored in the left-
handed model.
CHANGING THE FILTERS
When the maintenance reminder becomes activated,
check the cleanliness of the filters and replace them if
required.
The Vallox ventilation unit has three air filters:
• Coarse filter for supply air filters insects, heavy pollen
and other relatively large foreign objects out of the
outdoor air.
• Fine filter for supply air filters microscopic pollen and
dust particles out of the supply air.
• Coarse filter for extract air filters the extract air and
keeps the heat recovery cell clean.
The filter replacement interval depends on the ambient
particle concentration. It is recommended that the filters
be replaced every spring and autumn, or at the very least
once a year.
To replace the filters:
1. Disconnect the ventilation unit from the mains
electricity supply.
2. Open the upper door of the unit.
CAUTION
The door is heavy.
3. Remove the old filters (A, B, C) and discard them.
4. Install the new filters (A, B, C).
5. Close the door of the unit. Ensure that the safety
switch catch of the door is touching the safety switch,
allowing the unit to be turned on.
6. Plug the ventilation unit back into the mains.
7. The filters have now been successfully replaced.
MAINTENANCE
MAINTENANCE
NOTE
The service space in front of the
ventilation unit must be at least 555
mm.
TIP
Using original Vallox filters ensures
that the ventilation unit remains in top
condition, giving the best results. To
select and order filter packages, please
go to: filters.vallox.com

13 © Vallox Oy - All rights reserved
CLEANING THE HEAT RECOVERY CELL
Check that the heat recovery cell is clean roughly once a year,
or whenever the filters are being replaced. Clean by washing
as required.
IMPORTANT
If the unit has an enthalpy cell, it must not be washed.
Only aluminium or plastic cells can be washed.
To check and clean the heat recovery cell:
1. Disconnect the ventilation unit from the mains electricity
supply.
2. Lift the latch to open the door of the ventilation unit and
lift the door o.
CAUTION
The door is heavy.
3. Remove the filters (A, B, C).
4. Remove the sealing strip (E) above the cell in the direction
of the arrow.
5. Lift and pull the cell (D) out of the unit.
IMPORTANT
Handle the cell carefully! For example, do not lift the
cell by the layers. The cell layers are very thin and
easily damaged.
6. If the cell is dirty, clean it by immersing it in warm water,
to which a small amount of a mild detergent has been
added.
7. Rinse the cell clean with a water spray. Do not use a high-
pressure cleaner.
8. When all the water has drained from between the layers,
reassemble the ventilation unit in the reverse order.
9. Close the door and ensure that the safety switch catch of
the door is engaged.
10. Plug the ventilation unit back into the mains. The heat
recovery cell has now been checked and cleaned.
MAINTENANCE
D
E
D
E
CONDENSING WATER
In the heating season, the extract air humidity condenses to
water. In new buildings, condensation runo can form rapidly.
Condensed water must be able to freely leave the unit.
At some time before the heating season begins (e.g. during
autumn maintenance), check that the siphon or the condensing
water outlet in the bottom pool are not clogged. To check this,
pour some water into the pool. Clean as required.
NOTE
Some condensing water
may have accumulated
in the bottom pool
of the unit; this is
normal and requires no
corrective action.
WARNING
Water must at all times
be kept out of the
electrical system.

14
CLEANING THE FANS
Check the cleanliness of the fans when servicing the filters and
the heat recovery cell. Clean the fans as required.
Removing and cleaning the supply air fan (A)
To clean the supply air fan:
1. Disconnect the ventilation unit from the mains electricity
supply.
2. Lift the latch to open the door of the Vallox ventilation unit.
3. Lift the door o.
CAUTION
The door is heavy.
4. Remove the fine filter (1). To do so, pull the fine filter out of
the unit.
5. The fan has been fastened on the mounting plate with wing
bolts (2). Remove the wing bolts and lift the fan out of the
unit.
6. Disconnect the quick connector (3) of the fan cable.
7. Clean the fan. The fan blades can be cleaned with
compressed air (wear protective goggles) or by brushing
them gently. Do not remove or move the fan blade balancing
weights.
8. To reassemble the ventilation unit, follow the above steps in
reverse order.
9. Close the door. Ensure that the safety switch catch of the
door is touching the safety switch.
10. Plug the ventilation unit back into the mains.
Removing and cleaning the extract air fan (B)
To clean the extract air fan:
1. Disconnect the ventilation unit from the mains electricity
supply.
2. Lift the latch to open the door of the ventilation unit.
3. Lift the door o.
CAUTION
The door is heavy.
4. The fan has been fastened on the mounting plate with wing
bolts. Remove the wing bolts and lower the fan out of the
unit.
5. Disconnect the quick connector of the fan cable.
6. Clean the fan. The fan blades can be cleaned with
compressed air (wear protective goggles) or by brushing
them gently. Do not remove or move the fan blade balancing
weights.
7. To reassemble the ventilation unit, follow the above steps in
reverse order.
8. Close the door. Ensure that the safety switch catch of the
door is touching the safety switch.
9. Plug the ventilation unit back into the mains.
MAINTENANCE
B
A
2
2
1
B
A
3
2 x
IMPORTANT
The fans are
extremely sensitive
to external shocks. It
is recommended that
the fans be cleaned
in place, i.e. without
attempting to remove
them.
Handle the fan blades
carefully. Do not
remove or move the
fan blade balancing
weights.

15 © Vallox Oy - All rights reserved
MAINTENANCE
CLEANING THE GREASE FILTER OF THE
COOKER HOOD
Clean the grease filter of the cooker hood 1-2 times a month.
To clean the grease filter:
1. Open the quick connectors of the bottom plate of the cooker
hood by pressing them.
2. Let the bottom plate move to the down position.
3. Remove the grease filter from its mountings.
4. Clean the grease filter either by washing it with hot water and
hand-washing detergent or in a dishwasher.
REPLACING THE COOKER HOOD LAMP
To replace the cooker hood lamp (type PL 11, 11 W), remove the
protective glass of the lamp (A) by pushing it to the left. Once you
have replaced the lamp, put the protective glass back in its place.
A
1
2

16
Input power (total) (W)
Air flow (max) (dm/s)
SFP = SFP rate (Specific Fan Power)
recommended value <1.8 (kW m3/s)
FAN INPUT POWER SUPPLY/EXTRACT AIR VOLUMES
Pressure loss in ducts. Total pressure (Pa)
Volume flow rate (dm3/s)
extract air
supply air
Volume flow rate
Power (W)
TECHNICAL SPECIFICATIONS
400
350
300
250
200
150
100
50
0
0 10 20 30 40 50 60 70 80 90 100
0 36 72 108 144 180 216 252 288 324 360 m3/h
dm3/s
SFP 1,8
SFP 1,5
SFP 1,0
100 %
80 %
72 %
62 %
55%
44 %
28%
11 %
l/s
11 %
28 %
44 %
55 %
62 %
72 %
80 %
100 %
0 10 20 30 40 60 70 80 90 10050
36 72 1080 144 180 216 252 288 324 360
dm³/s
(l/s)
m³/h
40
80
120
160
200
0
Sound power level in the supply air duct by octave band Lw, dB Sound power level in the extract air duct by octave band Lw, dB
Adjustment position Adjustment position
Adjustment position (%) 11 28 44 55 62 72 80 100 11 28 44 55 62 72 80 100
Air flow dm3/s 10 23 35 43 49 59 65 72 11 22 35 44 48 59 64 71
Medium
frequency
of the
octave
band Hz
63 53 63 71 76 76 79 79 81 55 66 73 78 78 82 83 85
125 44 57 66 70 72 75 77 78 44 57 66 70 72 76 78 78
250 38 45 53 58 61 65 67 69 37 46 55 60 62 67 69 71
500 26 33 41 45 47 51 53 55 33 43 44 48 50 54 56 58
1000 21 34 40 44 45 48 50 52 25 34 41 44 46 49 50 52
2000 17 20 26 31 33 37 39 41 19 25 34 39 41 45 47 49
4000 19 19 20 24 26 30 32 34 19 19 24 29 32 36 38 41
8000 24 24 24 24 24 25 25 26 24 24 24 24 25 27 29 31
LW, dB
LWA, dB(A)
53 64 72 77 77 80 82 83 55 66 74 79 79 83 84 86
33 44 52 57 58 62 63 65 35 46 53 58 59 63 65 66
Sound pressure level coming through the envelope of the unit in the room in which it is installed (10m sound absorption)
Adjustment position / Air flows (supply/extract)
Adjustment position (%) 11 28 44 55 62 72 80 100
Air flow dm3/s 11/14 22/28 36/41 43/51 49/58 59/69 65/75 72/83
LpA, dB (A) 26 27 31 35 38 40 42 44
SOUND VALUES
TECHNICAL SPECIFICATIONS
Product title
Vallox 90 MV R
Vallox 90 MV L
Product number
3571400, 3571600
3571500, 3571700
Air volumes
Supply air
Extract air
73dm3/s, 100Pa
84dm3/s, 100Pa
Fans
Supply air
Extract air
0.119kW, 0.9A EC
0.119kW, 0.9A EC
Post-heating Electrical resistor, 900W Electrical connection 230 V, 50 Hz, 5.7 A power plug
Preheating –Enclosure protection class IP34
Additional heating –Heat recovery bypass Automatic
Filters
Supply air
Extract air
ISO Coarse > 75% + ISO ePM
ISO Coarse > 75%
Specific energy consumption (SEC)
in a cold climate
in a temperate climate
A+
B
Operating eciencies
Annual eciency
Supply air eciency
Specific Fan Power (SFP)
62% B
83%
1.1kW (50dm3/s) B
Dimensions (w x h x d) 597 x 689 x 361 mm Weight 52kg

17 © Vallox Oy - All rights reserved
TECHNICAL SPECIFICATIONS
TK
NTC
GND
P
T
WT
2
3
1
YEGN
YEGN
BN
BU
BN
BU
YEGN
YE
GN
D/I2
RH% CO2
BN
BU
BN
BN
N
L
N
L
N
L
L
N
N L N
L
230V 50Hz
1 2 3 4 5 6
90°C
130°C
TESTER
M
R1
D/I1
BN
YEGN
BU
YEGN
WT
YE
GN
+11V1
MB_B
MB_A MB_A
MB_B
+24V
RS_A
RS_B
GND
AN/I
GND
+24V
RS_A
RS_B
GND
RM/I
RM/O
+24V
+24V
+24V
RS_A
+24V
RS_A
RS_B
GND
RS_B
GND
YEGN
BU
BU
L
T1
T2
N
N
L
S/E
AHS
C
1
2
3
4
5
A
B
D
MB_A External Modbus A signal
MB_B External Modbus B signal
+24V +24V voltage (DC)
GND Digital and analog ground potential
RS_A Local hardware Modbus A signal
RS_B Local hardware Modbus B signal
NTC External temperature sensor connector
D/I1 Digital input 1
D/I2 Digital input 2
11V1 11.1 V operating voltage
AN/I Analog input 0-10VDC
RM/I 24V relay input
RM/O 24V relay output
TSupply air fan
PExtract air fan
MDamper motor LM230
TK Safety switch
AHS Post-heating control
S/E Fan balance adjustment
RH% COInternal humidity and carbon dioxide
sensor
R1 Post-heating resistor with 90°C and
130°C overheating protection
BU Blue
BN Brown
WT White
GY Grey
YE Yellow
YEGN Yellow-green
CABLE COLOURS
AMotherboard
B
1. Extract air fan tacho (WT)
2. GND (GN)
3. Extract air fan PWM (YE)
4. Supply air fan tacho (WT)
5. GND (GN)
6. Supply air fan PWM (YE)
C
1. Extract air
2. Outdoor air
3. Supply air
4. Exhaust air
5. Supply air from the HR cell
DLAN
INTERNAL ELECTRICAL CONNECTION
Vallox 90 MV

18
TECHNICAL SPECIFICATIONS
TK
NTC
GND
P
T
WT
2
3
1
YEGN
YEGN
BN
BU
BN
BU
YEGN
YE
GN
D/I2
BN
BU
BN
BN
N
L
N
L
N
L
L
N
NL N
L
230V 50Hz
90°C
130°C
TESTER
M
R1
D/I1
BN
YEGN
BU
YEGN
WT
YE
GN
+11V1
MB_B
MB_A MB_A
MB_B
+24V
RS_A
RS_B
GND
AN/I
GND
+24V
RS_A
RS_B
GND
RM/I
RM/O
+24V
+24V
+24V
RS_A
+24V
RS_A
RS_B
GND
RS_B
GND
YEGN
BU
BU
L
T1 T2
N
N
L
1
10
2
3
11
12
S
-
PL 11
LED
4
-
+
S
OK
3
21
12 10
11
VA
951026
951025
951027
950115
950516950584
D1
2
3
4
5
E
F
C
B
A
BN
GN
WT
MB_A External Modbus A signal
MB_B External Modbus B signal
+24V +24V voltage (DC)
GND Digital and analog ground potential
RS_A Local hardware Modbus A signal
RS_B Local hardware Modbus B signal
NTC External temperature sensor connector
D/I1 Digital input 1
D/I2 Digital input 2
11V1 11.1 V operating voltage
AN/I Analog input 0-10VDC
RM/I 24V relay input
RM/O 24V relay output
TSupply air fan
PExtract air fan
MDamper motor
TK Safety switch
AHS Post-heating control
S/E Fan balance adjustment
RH% COInternal humidity and carbon
dioxide sensor
R1 Post-heating resistor with 90°C and
130°C overheating protection
AMotherboard
B
1. Extract air fan tacho (WT)
2. GND (GN)
3. Extract air fan PWM (YE)
4. Supply air fan tacho (WT)
5. GND (GN)
6. Supply air fan PWM (YE)
C
1. Extract air
2. Outdoor air
3. Supply air
4. Exhaust air
5. Supply air from the HR cell
DLAN
EHood connector
F Vallox 90 K SC Hood
BK Black
BU Blue
BN Brown
WT White
GY Grey
YE Yellow
YEGN Yellow-green
CABLE COLOURS
Vallox 90K MV

19 © Vallox Oy - All rights reserved
TECHNICAL SPECIFICATIONS
Maximum ≤6W
MyVallox Control 1W
MyVallox RH% sensor 0.3W
MyVallox COsensor 1.2W
Voltage 24 VDC
POWER SUPPLY MB_A External Modbus A signal
MB_B External Modbus B signal
+24V +24V voltage (DC)
GND Digital and analog ground potential
RS_A Local hardware Modbus A signal
RS_B Local hardware Modbus B signal
NTC External temperature sensor connector
D/I1 Digital input 1
D/I2 Digital input 2
11V1 11.1 V operating voltage
AN/I Analog input 0-10VDC
RM/I 24V relay input
RM/O 24V relay output
EXTERNAL ELECTRICAL CONNECTION
3x1,5S
2x2x0,5+0,5
2x0,5
2x0,5
7028350
2014-08-29 JS
2x2x0,5+0,5
2x0,5
2x2x0,5+0,5
2x2x0,5+0,5
2x2x0,5+0,5
2x0,5
2x0,5
CAT
Analog input
two dierent
functions
Potential-free contact
data 24VDC can be
programmed to display
information such as
errors or to control the
valve and pump of the
MLV radiator.
Plug connection
1.2 m on top of the unit
MyVallox
Control
MyVallox
Control
REMOTE
MONITORING
Modbus RTU
VENTILATION UNIT INTERNAL
ELECTRICAL CONNECTION
MyVallox
RH%
sensor
MyVallox
CO
sensor
External
temperature
sensor
NTC 4K7
Digital input 1
8 dierent
functions
Digital input 2
8 dierent
functions
Ethernet connection on
top of the unit
RJ45 female
0.3W
1.2W
1W
1W

20
TECHNICAL SPECIFICATIONS
Always follow first and foremost the connection diagram
provided by the HVAC designer or heat pump manufacturer.
Also read the duct radiator manual.
The accompanying figure shows an example of the
arrangement for connecting the heating/cooling radiator unit
to the heat collection circuit.
Connect the radiator output pipe to the heat collection circuit
return pipe. Direct the fluid returning from the radiator unit to
the heat collection circuit return pipe. If you know that there
is a large loss of internal pressure inside the heat pump,
the heat pump should be bypassed. If this is done, the fluid
circuit will come into operation when the heat pump comes to
a halt. When this happens the pressure loss in the one-way
bypass valve Y2 must be lower than the pressure loss in the
heat pump.
Heating: The pump starts when the outdoor air temperature
drops below the winter limit value set at the factory (-5 °C).
Cooling The supply air setpoint value for the active mode
(for example, At home) controls the pump start-up. The pump
starts when the supply air setting is below the temperature of
the supply air that is blown into the apartment.
The duct radiator can be installed in both the supply air
duct and the outdoor air duct. If the radiator is installed in
the outdoor air duct, it can be used for both preheating and
cooling, or for preheating or cooling alone. If the radiator
is installed in the supply air duct, it can be used only for
preheating or cooling.
The duct radiator can be set to function either automatically
or manually.
• Automatic - In summer, the supply air temperature will
be maintained at the level specified in the temperature
setting. In winter, the duct radiator will turn on, when the
outdoor temperature falls below the winter setting.
• Manual - In summer, the duct radiator will turn on, when
the outdoor temperature rises above the summer setting.
In winter, the duct radiator will turn on, when the outdoor
temperature falls below the winter setting.
To prevent the risk of condensation in the supply air duct, you
can set the adjustment of the supply air limit to automatic or
manual.
• Automatic - The supply air limit is adjusted automatically
based on the dew point of the extract air. When the
supply air temperature falls too low, the duct radiator will
turn o.
• Manual - The supply air limit can be set manually. When
the supply air temperature falls down to the set value, the
duct radiator will turn o.
If an external sensor is in use, it is selected from the settings
of the external sensor whether it is used to control the
outdoor air duct radiator or the supply air duct radiator.
NOTE: If the duct
radiator is used in
the supply air duct, it
can only be used for
cooling.
NOTE: When used to
control the outdoor air
duct radiator, the exter-
nal NTC sensor is ins-
talled in the outdoor air
duct before the radiator.
When used to control
the supply air duct ra-
diator, the external NTC
sensor is installed after
the radiator.
NOTE:
When selecting the
relay (C), take account
of the maximum
allowed combined
power supply (6W) of
the circuit board in the
external MV electrical
box, if the relay power
supply comes from the
circuit board’s +24V
connector.
NOTE:
Due to the risk of humi-
dity damage, in a duct
that has not been insu-
lated for condensation
the supply air tempera-
ture must not fall below
+16 … 20 °C.
DUCT RADIATOR OPERATION