Vaillant recoVAIR VAR 150/4 L User manual

Installation and maintenance instructions
recoVAIR
VAR 150/4 L, VAR 150/4 R
AT, CH (de), DE
Publisher/manufacturer
Vaillant GmbH
Berghauser Str. 40 D-42859 Remscheid
Tel. [phone]‑0 Fax [phone]‑2810
[email protected] www.vaillant.de

Contents
2Installation and maintenance instructions recoVAIR 0020188110_03
Contents
1 Safety.................................................................... 3
1.1 Action-related warnings ......................................... 3
1.2 Intended use.......................................................... 3
1.3 General safety information .................................... 3
1.4 Regulations (directives, laws, standards).............. 4
2 Notes on the documentation .............................. 5
2.1 Observing other applicable documents ................. 5
2.2 Storing documents................................................. 5
2.3 Validity of the instructions...................................... 5
3 Product description............................................. 5
3.1 Symbols on the product......................................... 5
3.2 Design.................................................................... 5
3.3 Information on the identification plate.................... 6
3.4 CE label ................................................................. 6
4 Set-up.................................................................... 6
4.1 Checking the scope of delivery.............................. 6
4.2 Dimensions............................................................ 6
4.3 Observing the requirements for the installation
site ......................................................................... 7
4.4 Installing the product.............................................. 9
4.5 Opening/closing the product................................ 11
5 Electrical installation......................................... 11
5.1 Connecting external components in the
product's connection area.................................... 12
5.2 Installing and connecting the frost protection
element ............................................................... 12
5.3 Connecting the bypass ........................................ 12
5.4 Connecting the VR 32 bus coupler...................... 12
5.5 Connecting the product to the power supply in
a fixed installation ................................................ 13
6 Operation............................................................ 13
6.1 Operating concept ............................................... 13
6.2 Calling up the installer level................................. 13
7 Start-up............................................................... 13
7.1 Switching on the product ..................................... 13
7.2 Installation assistant ............................................ 13
8 Product adjustment........................................... 14
8.1 System efficiency................................................. 15
9 Handing the product over to the operator ...... 15
10 Inspection, maintenance and repair ................ 16
10.1 Procuring spare parts .......................................... 16
10.2 Mains connection line defective........................... 16
10.3 Carrying out maintenance work........................... 16
11 Detecting and rectifying faults, fault
messages and limp home mode messages .... 18
12 Customer service............................................... 18
13 Decommissioning.............................................. 18
13.1 Temporarily decommissioning the product.......... 18
13.2 Permanently decommissioning the product......... 18
14 Recycling and disposal..................................... 18
Appendix ............................................................................ 19
A Installer level –Overview .................................. 19
B Fault messages –Overview.............................. 21
C Limp home mode messages –Overview......... 22
D Troubleshooting ................................................ 22
E Check programmes –Overview ....................... 23
F Maintenance messages –Overview................. 24
G Technical data.................................................... 24

Safety 1
0020188110_03 recoVAIR Installation and maintenance instructions 3
1 Safety
1.1 Action-related warnings
Classification of action-related warnings
The action-related warnings are classified in
accordance with the severity of the possible
danger using the following warning signs and
signal words:
Warning symbols and signal words
Danger!
Imminent danger to life or risk of
severe personal injury
Danger!
Risk of death from electric shock
Warning.
Risk of minor personal injury
Caution.
Risk of material or environmental
damage
1.2 Intended use
There is a risk of injury or death to the user or
others, or of damage to the product and other
property in the event of improper use or use
for which it is not intended.
The product is only intended for aerating and
ventilating living areas. If the product is oper-
ated with a heat production source, the heat
production source must be room-sealed. The
remote control must only be used to control
the product. The product must only be oper-
ated when the filters are inserted.
The product is not suitable for aerating and
ventilating swimming pool systems. Due to
the high level of exposure to dust, the product
must not be operated during the construction
phase.
Intended use includes the following:
–observance of accompanying operating,
installation and servicing instructions for
the product and any other system compon-
ents
–compliance with all inspection and main-
tenance conditions listed in the instruc-
tions.
Any other use that is not specified in these
instructions, or use beyond that specified in
this document shall be considered improper
use. Any direct commercial or industrial use
is also deemed to be improper.
Caution.
Improper use of any kind is prohibited.
1.3 General safety information
1.3.1 Risk caused by inadequate
qualifications
The following work must only be carried out
by competent persons who are sufficiently
qualified to do so:
–Assembly
–Disassembly
–Installation
–Start-up
–Maintenance (Excluding the work that is
listed in the operating instructions.)
–Repair
–Decommissioning
▶Observe all instructions that are included
with the product.
▶Proceed in accordance with the current
state of technology.
▶Observe all applicable directives, stand-
ards, laws and other regulations.
1.3.2 Risk of poisoning caused by
simultaneous operation with a heat
production source
If the product is operated at the same time as
a heat production source, life-threatening flue
gas may escape into the rooms from the heat
production source.
▶Install a suitable safety device on-site
which monitors the pressure difference
between the living room and the flue
system and switches the product off if the
pressure difference is too large.
▶Have the installed safety device approved
by a chimney sweep.
▶Observe the instructions for the heat pro-
duction source and the heat production
source ordinance as well as any other rel-
evant laws and standards.
1.3.3 Risk of injury due to the heavy
weight of the product
▶Make sure that the product is transported
by at least two people.

1 Safety
4Installation and maintenance instructions recoVAIR 0020188110_03
1.3.4 Risk of injury during installation due
to the high product weight
▶Make sure that the product is installed by
at least two people.
▶When installing the product, secure it
against toppling or falling over.
1.3.5 Access to the mains plug/circuit
breaker must be guaranteed
▶Ensure that the mains plug/circuit breaker
(depending on the country) is always ac-
cessible after the installation.
1.4 Regulations (directives, laws,
standards)
▶Observe the national regulations, stand-
ards, guidelines and laws.

Notes on the documentation 2
0020188110_03 recoVAIR Installation and maintenance instructions 5
2 Notes on the documentation
2.1 Observing other applicable documents
▶You must observe all the operating and installation in-
structions included with the system components.
2.2 Storing documents
▶Pass these instructions and all other applicable docu-
ments on to the system operator.
2.3 Validity of the instructions
These instructions apply only to:
Product article number
Applicability: Germany
Germany
VAR 150/4 R 0010015167
VAR 150/4 L 0010015168
Product article number
Applicability: Austria
Austria
VAR 150/4 R 0010015167
VAR 150/4 L 0010015168
Product article number
Applicability: Switzerland
Switzerland
VAR 150/4 R 0010016047
VAR 150/4 L 0010016048
3 Product description
This product is a domestic ventilation unit.
3.1 Symbols on the product
Symbol Meaning
Opening for the outdoor-air filter
Opening for the exhaust air filter
3.2 Design
3.2.1 VAR 150/4 R
12345 6 7
8
15 14 13 12 11 10
9
1 Exhaust air filter
2 Bypass (optional heat
recovery diversion)
3 Cover for heat ex-
changer
4 Operator control panel
5 Switch box
6 Frost protection element
(optional)
7 Connection area for
external components
8 Exit air connection
9 Condensate discharge
spigot
10 Outside air connection
11 Outdoor air filter
12 Exit-air fan
13 Supply-air fan
14 Supply air connection
15 Exhaust air connection
3.2.2 VAR 150/4 L
1
2
3
4
567
8
15
1413
121110
9
1 Exhaust air filter
2 Bypass (optional heat
recovery)
3 Cover for heat ex-
changer
4 Operator control panel
5 Switch box
6 Frost protection element
(optional)
7 Connection area for
external components
8 Exit air connection
9 Condensate discharge
spigot
10 Outside air connection
11 Outdoor air filter
12 Exit-air fan
13 Supply-air fan
14 Supply air connection
15 Exhaust air connection

4 Set-up
6Installation and maintenance instructions recoVAIR 0020188110_03
3.2.3 Overview of the operator control elements
100
3
12
1 Fault clearance key
2 Operating buttons
3 Display
3.3 Information on the identification plate
The identification plate is mounted on the underside of the
product.
Information on the identific-
ation plate
Meaning
Read the installation and
maintenance instructions.
VAR 150/4 L (R) Type designation
VAR Vaillant ventilation unit with
heat recovery
150 Max. air volume flow in m 3/h
/4 Unit generation
L (R) Left (right)
PMAX Max. power consumption
VMAX Max. air volume flow
dPMAX
Delivery pressure at max. air
volume flow
TMAX Max. operating temperature
Bar code with serial number,
The 7th to 16th digits of the
serial number form the article
number
3.4 CE label
The CE label shows that the products comply with the basic
requirements of the applicable directives as stated on the
identification plate.
The declaration of conformity can be viewed at the manufac-
turer's site.
4 Set-up
4.1 Checking the scope of delivery
▶Check that the scope of delivery is complete.
Quant-
ity
Description
1 Domestic ventilation unit
1 Installation set:
–Rubber gaskets (4 pcs)
–Washers (4 pcs)
–Fixing screws (4 pcs)
–Rawl plugs (4 pcs)
–Connection hose for the siphon or condensate
discharge
1 Enclosed documentation
4.2 Dimensions
4.2.1 Front view
Ø 19
Ø 150
(4x)
141341 41
4.2.2 Side view from the right
600
246 3
123
106
280 137
71
4.2.3 Side view from the left
600
246 3
123
106
280137
71

Set-up 4
0020188110_03 recoVAIR Installation and maintenance instructions 7
4.2.4 View from above
1457
499 31
4.3 Observing the requirements for the
installation site
4.3.1 Observing the requirements for the
product's installation site
The product can be installed in cellar spaces, storage or util-
ity rooms, and in attics. The product can be ceiling-mounted
or it can be wall-mounted.
▶Observe the current applicable national construction reg-
ulations.
▶Ensure that the installation site is dry and is frost-proof
throughout.
▶Ensure that the installation site is aerated and ventilated.
▶Install the supply air pipeline so that there is sufficient
distance to the exit air pipeline, exhaust air pipeline and
outflow purging.
▶Check the load-bearing capacity of the wall or ceiling.
–Load-bearing capacity: ≥40 kg
▶Check whether the supplied fixing elements are sufficient
for the selected installation site.
▶Ensure that the installation site is not located higher than
max. 2000 metres above sea level.
Minimum clearances and installation clearances
400
400
600
▶Observe the minimum clearances and installation clear-
ances when installing on the ceiling.
600
400
600
1
▶Observe the minimum clearances and installation clear-
ances when installing on the wall.
▶Plan sufficient space for installing the ventilation system.
▶In order to minimise pressure losses, ensure that the dis-
tances between the header line of the ventilation system
and the product are as short as possible.
▶After installation, ensure that the pipelines and the ventil-
ation system are easily accessible.
▶Ensure that the mains plug/circuit breaker (depending on
the country) is always accessible after the installation.
▶Ensure that there is sufficient space to install the con-
densate siphon and condensate drain pipework.
▶If you install the product upright, the condensate dis-
charge (1) must point downwards.
▶If the product is to be hidden behind panelling (suspen-
ded ceiling), make sure that it is accessible for mainten-
ance work through sufficiently large inspection openings.
Requirements for the protective areas
▶Only install the product outside the protective areas
shown (0-2).
The height of the protective areas is limited by a horizontal
surface above the floor. The defined height is 225 cm. How-
ever, if a fixed shower head/water outlet is installed above
225 cm, this fixed shower head/water outlet limits the height
of the protective area.

4 Set-up
8Installation and maintenance instructions recoVAIR 0020188110_03
225 cm
60 cm
60 cm
1
0
0
2
2
1
▶If you install the product in a room with a bath tub, install
it outside the protective areas shown.
225 cm
60 cm
60 cm
1
0
2
2
0
1
▶If you install the product in a room with a shower tray,
install it outside the protective areas shown.
225 cm
240 cm
120 cm
1
1
▶If you install the product in a room with a shower, install it
outside the protective areas shown.
4.3.2 Observing the requirements for the
installation site of the remote control (step
switch/control)
▶Ensure that the remote control is always accessible at
the installation site.
▶Ensure that there is sufficient space to install and operate
the remote control.
4.3.3 Observe the requirements for silencers and
for installing ducts and the product
If the opening for the exit air pipeline is too close to the inlet
opening of the outside air pipeline, the exit air can recircu-
late.
▶Prevent exit air from being sucked in directly through
the outside air opening, supply air from being sucked in
directly through the exhaust air opening, and transfer air
from being sucked in directly through areas where there
are leaks/cable feedthroughs.
▶If the circumstances locally are such that you are unable
to comply with the minimum distance, you must use a
compact façade duct.
▶If required, connect the product to the pipelines using a
sound-absorbing hose in order to minimise noise pollu-
tion caused by structure-borne noise.
▶Install silencers in order to minimise noise pollution via
the duct system.
▶If you install the product in an attic, select an installation
site that is not above living spaces.
▶If particular acoustic requirements are in place at the
installation site, you should take corresponding on-site
measures to prevent noise.

Set-up 4
0020188110_03 recoVAIR Installation and maintenance instructions 9
4.4 Installing the product
4.4.1 Installing the product on the wall
Caution.
Risk of material damage caused by con-
densate.
If the condensate cannot drain from the
product, this may damage the product.
▶Install the product such that the condens-
ate drain pipe points downwards.
1. Drill the holes for the fixing screws.
–Drilled holes (→Page 6): 4
2. Insert the rawl plugs into the drilled holes.
3. Screw two fixing screws halfway into two drilled holes
(on the product side with the condensate drain pipe).
4. Position the lower screw openings of the product onto
the fixing screws and press the product against the wall.
5. Insert two fixing screws into the upper drilled holes and
screw the product in tightly.
6. Screw the lower fixing screws in tightly.
4.4.2 Installing the product on the ceiling
Caution.
Risk of material damage caused by con-
densate.
If the condensate cannot drain from the
product, this may damage the product.
▶Install the product such that the side of the
product with the condensate drain pipe
has a downward gradient.
1. Drill the holes for the fixing screws.
–Drilled holes (→Page 6): 4
2. Insert the rawl plugs into the drilled holes.
3. Screw two fixing screws halfway into two drilled holes
(on the product side with the condensate drain pipe).
4. Position the screw openings of the product onto the
fixing screws to mount it.
5. Press the product against the ceiling and hold it in
place.
6. Insert two fixing screws into the two other drilled holes
and screw the product in tightly.
7. Screw the remaining fixing screws in tightly.
–Product position: Horizontal, with no downward
gradient
4.4.3 Turning the display and operator control
elements
Conditions: Product is wall-mounted
▶Open the product. (→Page 11)
▶Loosen the cable connection at the display.
▶Press the display out of the holding frame.
▶Press the holding frame out of the cut-out in the operator
control screen.

4 Set-up
10 Installation and maintenance instructions recoVAIR 0020188110_03
90°
▶Turn the display and the holder frame.
–90°
▶Place the holding frame into the cut-out in the operator
control screen.
▶Place the display into the holding frame.
▶Establish the cable connection at the display.
▶Close the product. (→Page 11)
4.4.4 Connecting the condensate siphon/dry
siphon and condensate drain pipework
1. Connect the condensate siphon/dry siphon to the
product (→Installation instructions for the condensate
siphon/dry siphon, accessories).
–Condensate discharge pipe downward gradient
(descending from the product): > 5°
min. 20
1
A
B
Danger!
Risk of damage to health caused by incor-
rectly connected condensate drain pipe-
work!
In the interests of hygiene, the condensate
drain pipework must not be directly connec-
ted to the waste-water piping.
▶Connect the condensate discharge to the
second siphon.
Caution.
Risk of material damage caused by con-
densate.
If a condensate discharge pipe has been con-
nected incorrectly, a build-up of condensate
and uncontrolled condensate drainage may
damage the product. Furthermore, the con-
densate may leak out of the product and onto
the floor.
▶Install a drip distance of min. 20 mm
between the outlet for the condensate
drain pipework and the second siphon.
▶Note the downward gradient for the con-
densate discharge pipe (> 5°).
2. Connect the condensate drain pipework to the second
siphon while taking into consideration the drip distance
(1).

Electrical installation 5
0020188110_03 recoVAIR Installation and maintenance instructions 11
–Drip distance: ≥20 mm
3. Fill the condensate siphon/dry siphon with water.
4.4.5 Connecting the pipelines
1. Check the pipelines for coarse dirt.
Coarse dirt: Available
▶Clean the pipelines.
2. Route the pipelines in accordance with the manufac-
turer's specifications and applicable regulations for the
product.
–Diameter of pipelines: ≥150 mm
–Installing the exit air lines: Continuous downward
gradient to the product with condensate drain pipe-
work at the lowest point (special accessory (elbow
with condensate discharge))
3. Install the silencer in the supply, exit and outside air
lines.
4. Insulate all of the pipelines in accordance with the ap-
plicable regulations.
Note
Supply and exhaust air lines too, when rout-
ing through unheated rooms.
5. Seal the outside and exit air lines so that they are va-
pour-diffusion-tight.
34
1 2
1 Outside air connection
(R variant)
2 Exit air connection (R
variant)
3 Supply air connection
(R variant)
4 Exhaust air connection
(R variant)
6. Remove the sealing caps from the product connections.
7. Connect the pipelines to the product.
Caution.
Risk of material damage caused by a
missing seal.
If the pipelines are not connected to the
product in way that is vapour-diffusion-tight,
condensate may form and damage the
product.
▶Seal all of the connections for the
pipelines to each other and on the
product, so that they are vapour-diffusion-
tight.
▶Use suitable accessories and sealant.
8. Seal all of the product connections so that they are va-
pour-diffusion-tight.
–Suitable vapour-diffusion-tight adhesive tape
4.5 Opening/closing the product
4.5.1 Opening the product
1 1
23 2
4
1. Open the front flap (4).
2. Pull out both of the filter plugs (2).
3. Open all the turn locks (1) on the operator control
screen.
–Quarter turn to the left
4. Remove the operator control screen (3).
4.5.2 Closing the product
1 1
23 2
4
1. Place the operator control screen (3) onto the product
by placing the "uneven" edge of the operator control
screen onto the corresponding cut-outs.
2. Press the operator control screen onto the product and
screw the turn locks (1) closed.
–Quarter turn to the right
3. Push in both filter plugs (2).
4. Close the front flap (4).
5 Electrical installation
Only qualified electricians may carry out the electrical install-
ation.
Danger!
Risk of death from live connections
(230 V)!
Risk of death from electric shock when work-
ing on live connections (230 V).
▶Before carrying out any work on the
product, pull the product's mains plug
out of the earthed plug socket or use the

5 Electrical installation
12 Installation and maintenance instructions recoVAIR 0020188110_03
circuit breaker (depending on the country)
to switch off the product's power supply.
▶Secure the power supply against being
switched on again.
▶Check that there is no voltage in the con-
nections.
5.1 Connecting external components in the
product's connection area
5.1.1 Connecting the stage switch
Note
If a Vaillant controller is connected, the step
switch will not work.
321
3
4
21
1 Connection 1 to GND
connection
2 Connection 2 to LED
connection
3 Connection 3 to con-
nection V+
4 Connection plug (in the
unit)
1. Open the stage switch by removing the housing.
2. Connect the connection cable in the connection area of
the stage switch.
–Terminal assignment: GND connection to connec-
tion 1/LED connection to connection 2/V+ connec-
tion to connection 3
3. Connect the connection cable to the connection plug (4)
in the connection area for external components of the
product.
5.1.2 Connecting the air quality sensors
▶Connect the air-quality sensors in the connection area
for external components of the product (→Installation
instructions for the air-quality sensors).
5.1.3 Connecting the VRC 700 system control
▶Connect the control to the eBUS connection in the con-
nection area for external components of the product (→
System control installation instructions).
–Connection type: eBUS line
–Controller: Compatibility as of VRC 470/4
▶If the DCF signal is not decoded, set the date and time
on the control (→System control installation instructions).
5.2 Installing and connecting the frost
protection element
▶Install the frost protection element (→Installation instruc-
tions for the frost protection element).
5.3 Connecting the bypass
1. Open the product. (→Page 11)
2. Remove the existing screen from the bypass insertion
point.
3. Insert the new screen (with an opening for the bypass
motor) into the bypass insertion point.
4. Push the bypass shaft onto the bypass motor.
5. Connect the relevant cable (directly to the left of the
insertion point) to the bypass motor.
6. Insert the bypass motor into the screen for the bypass
insertion point.
7. Close the product. (→Page 11)
Conditions: The bypass motor was connected retroactively
▶Navigate to Menu →Installer level →Configuration →
Bypass and change the setting.
–Setting: Available
Installer level –Overview (→Page 19)
5.4 Connecting the VR 32 bus coupler
Note
If you want a system control to control other
Vaillant heat generators in addition to the product,
the VR 32 bus coupler is required.
1. Open the product. (→Page 11)
Opening the electronics box
2. Remove the cover from the electronics box by releasing
the latching lugs from their anchoring point.

Operation 6
0020188110_03 recoVAIR Installation and maintenance instructions 13
X31
BUS
23
4
1
3. Insert the bus coupler (2) in the electronics box.
4. Use the digital cable (1) to connect the bus coupler (2)
and the PCB (connection "X31").
5. Undo the eBUS cable (3) from the eBUS connection (4)
on the PCB.
6. Secure the eBUS cable (3) to the bus coupler.
Closing the electronics box
7. Press the cover firmly onto the electronics box until the
latching lugs engage.
8. Close the product. (→Page 11)
9. Set the bus address for the bus coupler on the system
control (→System control instructions).
5.5 Connecting the product to the power
supply in a fixed installation
If no suitable country-specific earthed socket outlet is avail-
able at the installation site, a fixed connection to the power
supply is required.
▶Remove the mains plug (type F, CEE 7/4) from the power
supply cable.
▶Permanently connect the mains connection line to the on-
site power supply via an all-pole electrical partition which
can be switched off (e.g. a line protection switch).
–Contact opening of the electrical partition: ≥3 mm
▶Connect the product to the protective earth conductor.
6 Operation
6.1 Operating concept
The operating concept, the operation of the product and
the read-off and setting options in the operator level are de-
scribed in the operating instructions.
An overview of the read-off and setting options for the in-
staller level can be found in the "Installer level –Overview"
table in the appendix.
Installer level –Overview (→Page 19)
6.2 Calling up the installer level
1. Press and at the same time.
2. Use and to set the code for the
installer level.
–Code: 17
3. Confirm by pressing .
6.2.1 Exiting the installer level
▶Press (several times, if necessary, depend-
ing on the selection level).
◁The basic display is shown.
7 Start-up
▶To start up and operate the operator control elements,
open the front flap.
▶If you want to operate the product at the same time as an
extractor hood in exhaust air mode, ensure that sufficient
outside air can flow in.
7.1 Switching on the product
▶Plug the product's mains plug into the earthed plug
socket (230 V) or use the circuit breaker (depending on
the country) to switch on the product.
◁The product's electronics start up.
◁The basic display appears on the display.
7.2 Installation assistant
As a prerequisite for running the installation assistant, the
product must have been installed completely and correctly
and the system must have been started up completely and
correctly (including the pipelines and all valves). The valves
must also be set.
The installation assistant is automatically launched when the
product is switched on for the first time.
You must confirm the launching of the installation assistant.
After confirming this, all heating demands for the product are
blocked. This status remains until the installation assistant is
completed or cancelled.

8 Product adjustment
14 Installation and maintenance instructions recoVAIR 0020188110_03
7.2.1 Setting the language
▶Set the required language.
7.2.2 Setting the installation height
▶Set the height above sea level of the installation site in
order to guarantee the required volume flows at the in-
stallation site.
–Adjustment range: −200 … 2,000 m
7.2.3 Setting the nominal flow
▶Set the nominal flow in accordance with the building size
and type.
–Adjustment range: 70 … 120 m³/h
7.2.4 Setting the nominal flow correction
(exhaust air)
▶Set the nominal flow correction (exhaust air).
–Adjustment range: −40 … 40 %
7.2.5 Setting the nominal flow correction (supply
air)
▶Set the nominal flow correction (supply air).
–Adjustment range: −40 … 40 %
7.2.6 Setting the type of frost protection element
▶Set the type of frost protection element.
–Adjustment range: Not available/Electrical/Hy-
draulic
7.2.7 Setting the air/earth collector
▶Set whether an air/earth collector is available.
–Adjustment range: Not available/Available
7.2.8 Setting the pressure monitor
1. If you want to operate the product at the same time as
an open-flued heat production source, you must set the
pressure monitor to Available.
–Adjustment range: Not available/Available
Note
If a pressure monitor is available, the stand-
ard frost protection function is deactivated.
2. If a pressure monitor is available, use the frost protec-
tion element to guarantee frost protection.
7.2.9 Setting the bypass
▶Set whether or not a bypass is present.
–Adjustment range: Not available/Available
7.2.10 Setting the step switch
▶Set whether a step switch is available.
–Adjustment range: Not available/Available
7.2.11 Setting the air quality sensors
▶Set the number of air quality sensors.
–Adjustment range: 0 … 2
7.2.12 Setting the U value
▶Set the U value in accordance with the building.
–0.2 … 2.5
7.2.13 Recording contact details
▶If you want, you can store your telephone number (max.
16 digits with no spaces) in the menu.
▶If the telephone number is shorter than 16 digits, end
the entry after the last digit by pressing the right-hand
selection button .
The operator can display your telephone number in the in-
formation menu.
8 Product adjustment
If you have already started up the product and finished the
installation assistant, you can again adapt/set the paramet-
ers for the functions that are already set and for other func-
tions.
Installer level –Overview (→Page 19)
You can use the check programmes (installer level) to
check/run the product's functions.
The following text lists only those functions that have not yet
been set in the installation assistant.
Menu →Installer level →Configuration
Function Explanation
Int. ventil. vol. flow You can use this function to set the per-
centage value for the intensive ventila-
tion. The setting of the nominal ventila-
tion is used as a reference value here.
Red. ventil. vol.
flow
You can use this function to set the per-
centage value for the reduced ventila-
tion. The setting of the nominal ventila-
tion is used as a reference value here.
Exh. air disbalance You can use this function to set the dis-
balance between the exhaust air volume
flow and supply air volume flow. The ex-
haust air volume flow must always be
greater than the supply air volume flow,
so that there is slight negative pressure.
This means that, for example, moisture
loads are not pushed into the building
fabric, but are drained away as effect-
ively as possible.
Exh.air int. vol. fl.
cor.
You can use this function to set the
exhaust air volume flow for the intensive
ventilation in the case of deviations
between the target and actual value.
Sup.air int. vol.fl.
cor.
You can use this function to set the
supply air volume flow for the intensive
ventilation in the case of deviations
between the target and actual value.

Handing the product over to the operator 9
0020188110_03 recoVAIR Installation and maintenance instructions 15
Function Explanation
Exh. air red. vol.
corr.
You can use this function to set the
exhaust air volume flow for the reduced
ventilation in the case of deviations
between the target and actual value.
Sup. air red. vol.
corr.
You can use this function to set the
supply air volume flow for the reduced
ventilation in the case of deviations
between the target and actual value.
Diff.temp. bypass You can use this function to set the tem-
perature amplitude between outside air
and exhaust air from which the bypass
switches from "open" to "half-open".
This means that, at a high sensitivity to
draughts, the value should be reduced.
When using a complete, passive cooling
capacity, the value should be increased.
Min. CO2 content You can use this function to set the
CO2value (measured by the air-qual-
ity sensors) from which the product in-
creases the air volume flow in automatic
mode.
Max. CO2 content You can use this function to set the
CO2value (measured by the air-qual-
ity sensors) from which the product
achieves the set nominal flow in auto-
matic mode.
Min. air humidity You can use this function to set the re-
lative air humidity (measured by the
moisture sensor) from which the product
increases the air volume flow in auto-
matic mode.
Max. air humidity You can use this function to set the re-
lative air humidity (measured by the
moisture sensor) from which the product
achieves the set nominal flow in auto-
matic mode.
System efficiency You can use this function to monitor the
system efficiency after P.03 has previ-
ously been run once. If there is an exten-
ded period of inefficiency, maintenance
message M.802 is shown in the display.
Appliance type You can use this function to set whether
you are installing/have installed a wall
unit or a ceiling unit.
Adjustment options:
–1 = Small wall unit (air volume flow
260 m³/h)
–2 = Large wall unit (air volume flow
360 m³/h)
–3 = Ceiling unit (air volume flow
150 m³/h, L variant)
–4 = Ceiling unit (air volume flow
150 m³/h, R variant)
8.1 System efficiency
8.1.1 Starting the system efficiency monitoring
1. Call up the installer level. (→Page 13)
2. Navigate to the Test menu →Check programmes →
Initialisation measure menu item.
3. Start the check programme.
◁If the check programme has been successfully run,
the System efficiency function can be selected
from the Configuration menu.
4. Navigate to the Configuration →System efficiency
menu item.
5. Activate the System efficiency function.
6. Exit the installer level. (→Page 13)
8.1.1.1 Checking system efficiency
Conditions: The Initialisation measure check programme has been run
once before
▶Call up the installer level. (→Page 13)
▶Navigate to the Test menu →Check programmes →
System efficiency test menu item.
▶Start the check programme.
◁If the check programme has been successfully run,
the degree of system efficiency is shown in the
display.
1 / 2
Test result: Efficiency: High
Test result: Efficiency: Medium
Test result: Efficiency: Low
If the Efficiency: Low test result is shown in the display,
first try to increase the system efficiency. (→Page 17)
If it is not possible to increase the system efficiency, re-
measure the system. (→Page 15)
2 / 2
The check programme was not run successfully.
Establish the system efficiency. (→Page 17) If you can-
not establish the system efficiency, re-measure the sys-
tem. (→Page 15)
▶Exit the installer level. (→Page 13)
8.1.1.2 Measuring/initialising the system
1. Call up the installer level. (→Page 13)
2. Navigate to the Test menu →Check programmes →
Initialisation measure menu item.
3. Start the check programme.
◁The system was measured or initialised again.
◁The System efficiency function is still active.
4. Exit the installer level. (→Page 13)
9 Handing the product over to the
operator
▶Inform the operator about how to handle the system. An-
swer any questions the operator may have. In particular,
draw attention to the safety information which the oper-
ator must follow.

10 Inspection, maintenance and repair
16 Installation and maintenance instructions recoVAIR 0020188110_03
▶Inform the operator of the necessity to have the system
maintained according to the specified intervals.
▶Provide the operator with all relevant instructions and unit
documentation for safe keeping.
▶Inform the operator that the product must not be operated
together with open-flued combustion locations without a
protection device.
10 Inspection, maintenance and repair
Danger!
Risk of death from live connections
(230 V)!
Risk of death from electric shock when work-
ing on live connections (230 V).
▶Before carrying out any work on the
product, pull the product's mains plug
out of the earthed plug socket or use the
circuit breaker (depending on the country)
to switch off the product's power supply.
▶Secure the power supply against being
switched on again.
▶Check that there is no voltage in the con-
nections.
10.1 Procuring spare parts
The original components of the product were also certified
by the manufacturer as part of the declaration of conformity.
If you use other, non-certified or unauthorised parts during
maintenance or repair work, this may void the conformity of
the product and it will therefore no longer comply with the
applicable standards.
We strongly recommend that you use original spare parts
from the manufacturer as this guarantees fault-free and safe
operation of the product. To receive information about the
available original spare parts, contact the contact address
provided on the reverse of these instructions.
▶If you require spare parts for maintenance or repair
work, use only the spare parts that are permitted for the
product.
10.2 Mains connection line defective
If the unit's mains connection line is damaged, the mains
connection line must be replaced by the manufacturer or
their customer service department or a similarly qualified
person in order to prevent any hazards.
10.3 Carrying out maintenance work
▶Carry out all maintenance work during the annual inspec-
tion/maintenance.
▶Observe the maintenance messages that are displayed.
▶Temporarily decommission the product before carrying
out any maintenance work. (→Page 18)
▶After all maintenance work has been carried out, start up
the product again. (→Page 13)
10.3.1 Caring for the product
Caution.
Risk of material damage caused by un-
suitable cleaning agents.
▶Do not use sprays, scouring agents, de-
tergents, solvents or cleaning agents that
contain chlorine.
▶Clean the casing with a damp cloth and a little solvent-
free soap.
10.3.2 Cleaning the supply and exhaust air valves
▶Clean the supply and exhaust air valves in the living
areas (→Instructions for valves).
10.3.3 Cleaning the heat exchanger, condensate
siphon, condensate discharge pipe and
condensate tray
1. Open the product. (→Page 11)
2. Undo and remove the heat exchanger cover.
Caution.
Risk of material damage to the heat ex-
changer caused by incorrect handling.
If your hands or any objects come into direct
contact with the fins, the heat exchanger may
be damaged.
▶Use the pull-out strip to pull the heat ex-
changer out of the product.
▶Do not touch the fins.
3. Use the pull-out strip to remove the heat exchanger
from the guide rails in the product.
Note
Condensate may escape from the heat ex-
changer.
4. Catch any condensate that may escape, before it
comes into contact with other components.
5. Only clean the heat exchanger with clean water and
allow the heat exchanger to dry.
Note
Wear gloves and avoid contact with the skin
and eyes.

Inspection, maintenance and repair 10
0020188110_03 recoVAIR Installation and maintenance instructions 17
6. Unscrew the condensate siphon from the product.
7. If they are dirty, clean the condensate discharge pipe,
the condensate tray and the condensate siphon.
8. Secure the condensate siphon to the product.
(→Page 10)
9. Place the heat exchanger in the guide rails and slide
the heat exchanger back into the product.
10. Place the cover on the heat exchanger with new seals
and screw it down tightly.
11. Close the product. (→Page 11)
10.3.4 Cleaning the frost protection element
1. Open the product. (→Page 11)
Caution.
Risk of material damage caused by incor-
rect cleaning.
Water and other liquids may damage the frost
protection element.
▶Use only a vacuum cleaner to clean the
frost protection element.
2. Clean the frost protection element.
–Vacuum cleaner
3. Close the product. (→Page 11)
10.3.5 Maintaining the filters
Removing the filters
121
3
2
1. Open the front flap (3).
2. Pull out both of the filter plugs (1).
3. Pull the outdoor- and exhaust-air filter (2) out of the
product.
4. Check the filters for dirt.
–Recommended check: Every three months
1 / 2
Degree of contamination: Filter is lightly soiled
Caution.
Risk of material damage caused by
incorrect cleaning of the filter.
Water and other liquids may damage the
filters and the product.
▶Only clean the filters with a vacuum
cleaner.
▶Clean the filters.
–Vacuum cleaner at a low setting
2 / 2
Degree of contamination: Filter is heavily soiled
Operating days: ≥182 d
Replacement interval reached: At least twice annually
▶Replace the filters.
–Exhaust-air filter class: G4 (in accordance
with EN 779)/ISO Coarse (in accordance with
ISO 16890)
–Outdoor-air filter class: F7 or F9 (in ac-
cordance with EN 779)/ISO ePM2.5 70%
or ISO ePM1,0 85% (in accordance with
ISO 16890)
–Exhaust air valve filter
Installing the filters
5. Install the filters in the product and ensure that they are
correctly aligned as you do so.
–Labelling on the filters
–Sticker on the inside of the front flap
6. Place the filter plugs on the filters.
Resetting the filter days
7. Switch on the product. (→Page 13)
8. Press the + buttons simultan-
eously to access the menu.
9. Navigate to the Resets menu →Res. days until fil. ch..
10. Reset the filter days.
11. Press the button to exit the menu.
12. Close the front flap.
10.3.6 Increase/establish system efficiency
1. Clean the supply and exhaust air valves and their cor-
responding filters. (→Page 16)
2. Check the exposed piping for leaks.
3. Check whether any obstructions are impeding the air
flows.
4. If required, re-adjust the supply-air and exhaust-air
valves.
5. Clean the outside air's intake tract and the exit air's
outlet openings.
6. Carry out maintenance on the product filter.
(→Page 17)
7. Remove the front flap if this has not yet been done.
Conditions: The maintenance message M.802 was previously shown in
the display.
▶Switch the product on if this has not already been done.
(→Page 13)
◁The system efficiency is checked automatically.
1 / 2
Maintenance message M.802 is no longer shown in the
display.
No other measures are required.
2 / 2
Maintenance message M.802 is still being shown in the
display.
▶Measure/initialise the system. (→Page 15)

11 Detecting and rectifying faults, fault messages and limp home…
18 Installation and maintenance instructions recoVAIR 0020188110_03
Conditions: No maintenance message is shown in the display.
▶Switch the product on if this has not already been done.
(→Page 13)
▶Check the system efficiency. (→Page 15)
8. Secure the front flap.
11 Detecting and rectifying faults, fault
messages and limp home mode
messages
Danger!
Risk of death from live connections
(230 V)!
Risk of death from electric shock when work-
ing on live connections (230 V).
▶Before carrying out any work on the
product, pull the product's mains plug
out of the earthed plug socket or use the
circuit breaker (depending on the country)
to switch off the product's power supply.
▶Secure the power supply against being
switched on again.
▶Check that there is no voltage in the con-
nections.
▶If faults, fault messages (F.XXX) or messages regarding
limp home mode (Lhm.XXX) occur, rectify the fault after
checking the tables in the appendix or using the check
programmes.
12 Customer service
Applicability: Austria
Vaillant Group Austria GmbH
Clemens-Holzmeister-Straße 6
1100 Wien
Österreich
E-Mail Kundendienst: [email protected]
Internet Kundendienst: http://www.vaillant.at/werkskunden-
dienst/
Telefon: 05 7050‑2100 (zum Regionaltarif österreichweit, bei
Anrufen aus dem Mobilfunknetz ggf. abweichende Tarife -
nähere Information erhalten Sie bei Ihrem Mobilnetzbetrei-
ber)
Der flächendeckende Kundendienst für ganz Österreich ist
täglich von 0 bis 24 Uhr erreichbar. Vaillant Kundendienst-
techniker sind 365 Tage für Sie unterwegs, sonn- und feier-
tags, österreichweit.
Applicability: Switzerland
Vaillant GmbH (Schweiz, Suisse, Svizzera)
Riedstrasse 12
CH-8953 Dietikon
Schweiz, Svizzera, Suisse
Kundendienst: 044 74429‑29
Techn. Vertriebssupport: 044 74429‑19
Applicability: Germany
Auftragsannahme Vaillant Kundendienst: 021 91 5767901
13 Decommissioning
Danger!
Risk of damage to health caused by de-
commissioning the product.
If the product is decommissioned, the frost
protection function is no longer active. This
increases the risk of moisture or mould build-
ing up.
▶Only decommission the product in the
case of an emergency, for maintenance
or repair work or for final disassembly.
13.1 Temporarily decommissioning the product
▶Pull the mains plug out of the earthed plug socket (230 V)
or use the circuit breaker (depending on the country) to
switch off the product.
13.2 Permanently decommissioning the product
▶Pull the mains plug out of the earthed plug socket (230 V)
or use the circuit breaker (depending on the country) to
switch off the product.
▶Remove the product and all of its components.
14 Recycling and disposal
Your product consists largely of recyclable materials.
Disposing of the packaging
▶Dispose of the packaging correctly.
Disposing of the product and accessories
▶Dispose of used filters with household waste.
▶Do not dispose of the product or the accessories (apart
from the filters) with household waste.
▶Dispose of the product and all accessories correctly.
▶Observe all relevant regulations.

Appendix
0020188110_03 recoVAIR Installation and maintenance instructions 19
Appendix
A Installer level –Overview
Setting level Values Unit Increment, select Default
setting
Min. Max.
Installer level →
Enter code 00 99 1 (competent person code 17) 00
Installer level →List of faults →
F. XXX –F.XXX1) Delete
Installer level →Test menu →Statistics →
Operating hours Current value h
Pass. cool. op. hours Current value h
Heat recovery hours Current value h
Stand. HE op. hrs Current value h
FPE operating hours Current value h
FPE operations Current value
Exit air ventil. op. hrs Current value h
Sup. air ventil. op. hrs Current value h
Bypass steps (if a bypass is installed) Current value
Bypass operations (if a bypass is
installed)
Current value
No. switch. ops Current value
Installer level →Test menu →Check programmes →
P.01 Bypass test (optional) Yes,No No
P.02 Test Frost prot. element (op-
tional)
Yes,No No
P.03 Initialisation measure Yes,No No
P.04 System efficiency test Yes,No No
Installer level →Test menu →Sensor/actuator test →
T.01 Frost prot. element (optional) on,off off
T.03 Temperature: Outside air −50 60 ℃0.5 0
T.04 Temperature: Exit air −50 60 ℃0.5 0
T.05 Temperature: Supply air −50 60 ℃0.5 0
T.06 Temperature: Exhaust air −50 60 ℃0.5 0
T.07 Exhaust air humidity 0 100 % 0.5 0
T.08 Supply air internal target value 0 400 m³/h 1 0
T.10 Supply air speed 0 5000 rpm 1 0
T.11 Exhaust air internal target
value
0 400 m³/h 1 0
T.13 Exhaust air speed 0 5000 rpm 1 0
T.14 Air quality sensor 1 (optional) 0 5000 ppm 1 0
T.15 Air quality sensor 2 (optional) 0 5000 ppm 1 0
T.17 Position of bypass flap (op-
tional)
0 100 % 1 0
T.18 Step switch LED (optional) on,off off
T.19 Alarm signal on,off off
1) Fault lists are only available, and can only be deleted, if faults have occurred.

Appendix
20 Installation and maintenance instructions recoVAIR 0020188110_03
Setting level Values Unit Increment, select Default
setting
Min. Max.
Installer level →Configuration →
Language Current lan-
guage
Languages available for selection English
Contact data Phone number 0 - 9
Installation height −200 2000 m 50 100
Nominal flow 175 280 m³/h 5
Int. ventil. vol. flow 120 130 % 1 130
Red. ventil. vol. flow 60 80 % 1 70
Exh. air disbalance −20 20 % 1 5
Exh. air nom. flow corr. −40 40 % 1 0
Sup. air nom. fl. corr. −40 40 % 1 0
Exh.air int. vol. fl. cor. −40 40 % 1 0
Sup.air int. vol.fl. cor. −40 40 % 1 0
Exh. air red. vol. corr. −40 40 % 1 0
Sup. air red. vol. corr. −40 40 % 1 0
Frost prot. element Not available,Electrical,Hydraulic Not avail-
able
Air-earth collector Not available,Available Not avail-
able
Diff.temp. bypass 0 25 ℃0.5 10
Pressure monitor Not available,Available Not avail-
able
Step switch Not available,Available Not avail-
able
Air quality sensor 0 2 1 0
Min. CO2 content 350 600 ppm 50 450
Max. CO2 content 800 2000 ppm 50 1200
U value 0.2 2.5 W/(m2K) 0.1 1.5
Min. air humidity 30 40 % 2 38
Max. air humidity 50 70 % 2 68
System efficiency On,Off Off
Software version Is displayed only
Appliance type 1 4 1
Installer level →Resets →
Factory settings Yes,No No
Res. days until maint. Yes,No No
Reset exh. air ventil. Yes,No No
Reset supply air fan Yes,No No
Reset FPE (optional) Yes,No No
Reset bypass (optional) Yes,No No
Installer level →Start inst. assistant →
Language Languages available for selection English
Installation height −200 2000 m 50 100
Nominal flow 175 280 m³/h 5
Exh. air nom. flow corr. −40 40 % 1 0
Sup. air nom. fl. corr. −40 40 % 1 0
1) Fault lists are only available, and can only be deleted, if faults have occurred.