inVENTer iV-Twin User manual

Status: 04/2012
iV-Twin ventilation system
Installation and operating instructions
Manufacturer
inVENTer®GmbH
Ortsstraße 4a, D-07751 Löberschütz, Germany
Phone: [phone], Fax: [phone]
www.inventer.eu, [e-mail]

Content
inVENTer® ww w. i n venter.de 1
Content
1. Assembly Instruction "General Part" ............................................................................................2
2. Assembly wall sleeve (channel iV-Twin) ......................................................................................5
3. Assembly of weather protection hood 09 ................................................................................. 10
4. Finalization of the iV-Twi n from the i nside................................................................................ 12
4.1 Assembling the thermal accumulator, fan and electrical connection ................................... 12
4.2 Assembly of the inner cover ....................................................................................................... 14
5. Servicing and maintenance ........................................................................................................ 16

1. Assembly Instruction "General Part"
inVENTer®www.inventer.de 2
1. Assembly Instruction "General Part"
Immediately after receipt please check the goods for transportation damages and
completeness (delivery note). Attributable complaints are no longer accepted 3 months
after delivery. Please store the goods in a dry and secure place until installation. Carefully
store the delivery note.
The ventilation system can only be commissioned after finishing all building
activities!
Identification points of the device
inVENTer iV-Twi n, according to construction permit DIBt: Z-51.3-198
Manufacturer: inVENTer GmbH, Ortsstraße 4a, D-07751 Löberschütz
inVENTer iV-Tw i n
Year of manufacture: 2012
Overview:
1: Cover of weather protection hood
2: Base plate of weather protection hood
3: Panel of inner cover
4: Dust filter
5: Base plate of inner cover
6: Reverse fan (2 x)
7: Wall sleeve (double channel)
8: Thermal accumulator (2 x)
9: Sliding sleeve
inVENTer iV-Twin

1. Assembly Instruction "General Part"
inVENTer®www.inventer.de 3
inVENTer®Quality and Guarantee
The inVENTer ventilation system is manufactured according to the DIBt permit and strict
quality guidelines. Only high-quality and corrosion resistant materials such as plastic,
ceramic and stainless steel are used.
The inVENTer ventilator is designed for continuous operation. With only an average 2.5
W connection capacity per ventilator (including controller losses), about 40 times more
(heat) energy is saved than used.
We are subject to a statutory warranty period of 2 years. For an additional fee it is
possible to extend the warranty for another 3 years. Additionally, we provide a
supplemental guarantee of 8 years on the ceramic heat storage tank.
The manufacturer does not assume warranty if the installation was not completed
according to the assembly instruction.
Intended use
The inVENTer ventilation system is used to ventilate and aerate living spaces and similar
rooms (e.g., offices, medical offices, etc.) and is installed on exterior walls. When
planning, installing and operating, please follow the stipulations and valid building codes.
The iV-Twin was especially developed for individual room ventilation.
The inVENTer ventilation system may not be used in rooms that are subject to high levels
of dust accumulation (e.g., in model construction) and may not be used in rooms with
aggressive or corrosive gases.
The inVENTer ventilation system may not be operated without a dust filter and inner
cover.
Please close the inVENTer dust-tight during construction work, and put the ventilation
system into operation only after concluding the construction work. Please inform the
respective contract builders and responsible construction manager.
The inVENTer ventilation system is not suitable for building drying during the construction
phase and for ventilation while working with high levels of dust accumulation (e.g.
sanding plaster board).
The manufacturer is not liable for damages created by improper installation and non-
compliance with intended use.
Safety
Please always follow the safety, warning and processing information of the materials and
tools used, as well as the points specified in this instruction. Furthermore, when carrying
out the work and using materials and tools, the current applicable legislature must be
followed. Non-compliance can lead to damages to the device or bodily injuries.
The inVENTer ventilation system works with a low-voltage protector. Therefore, the
inVENTer ventilation device may never be directly connected to the 230 V mains supply;
rather it must be connected via a controller. Damages caused by incorrect installation are
not included in the warranty obligation.
Attention for fireplaces!
Please follow the valid building codes and regulations (e.g., FeuVO [Firing Regulation])!
Before installing the ventilation system please talk to your chimney sweeper!

1. Assembly Instruction "General Part"
inVENTer®www.inventer.de 4
Attention! Please carefully read all of the instructions before starting the assembly. For
questions please contact your authorised dealer and construction manager. Assembly
faults can impair proper function, cause injuries and/or lead to loss of warranty.
Only trained qualified personnel may complete the assembly work. Only qualified
experts may complete the electrical installation.
Ventilation planning / General notes
Before starting the work, a project should be presented that indicates the number of
ventilation devices, the principal locations of the ventilation devices, the ventilation
principle (cross ventilation, single room ventilation, aeration), and the respective
applicable controllers. The following principle rules apply for the ventilation function:
Operate ventilators in pairs: The supply air should correspond to the extract quantity.
Every supply air conveying ventilation device has a fan that transmits extract air at the
same time. The ventilation devices are allocated via the project, which must be checked
and possibly changed after controller start-up. During the delivery state the fans are set
to "extract". With correct installation, the iV-Twin ensures operation in pairs.
Synchronisation: When utilising several ventilators activated by several controllers,
synchronous collaboration must be observed. See notes in the controller instruction. All
controllers should be connected via the mains fuse to the main circuit of the house. The
iV-Twin works autosynchronous if assembled correctly.
Cross ventilation: The local ventilation system is based on free air movement between
the individual inVENTer ventilation devices in paired operation. Therefore, inside doors
many not be closed airtight. Overcurrent measures must be planned: Air space of about
10 mm below the door, unscrewing the door hinges by 5mm, using a ventilation grille or
similar. For the iV-Twin these measures are not necessary.
Please find out from your planner if a "RAL installation" is necessary before
installation. Suitable materials are already provided on site if necessary.

2. Assembly of wall sleeve (channel iV-Twin)
inVENTer®www.inventer.de 5
2. Assembling the wall sleeve (channel iV-Twin)
With the sliding sleeve, slight length adjustments may be made (extension up to 50 mm).
Technical data
Channel iV-Twin with sliding sleeve (Art. no. 1506-0004)
A: Locking area
B: Insi de
C: Outside
Scope of supply
- Channel iV-Twin: 400 mm (Art. no. 1506-0004) / 550 mm (Art. no. 1506-0010) /
700 mm (Art. no. 1506-0011) / 900 mm (Art. no. 1506-0012)
- Sliding sleeve
- Mounting wedges
- Plaster cover (can be cut)
- Accessory kit (foam tape, dowel + screws + expansive bands for weather protection
hood, stop strap)
Accessories (optional)
- Sound mat (Art.-no. 1004-0073)
- Wind protection (Art.-no. 1004-0071)
- Fabric tape for stopping the sliding sleeve (Art. no.1004-0051)
- Insulation anchor (Art.-no. 1004-0067)
- Flat cable 6 x 0.25 mm2(Art. no. 1004-0006 [33 m] / Art. no. 1004 - 0007 [lfm])
- Round cable 3 x 0.75 mm2(Art. no. 1004-0020 [33 m] / Art. no. 1004 - 0049 [lfm])

2. Assembly of wall sleeve (channel iV-Twin)
inVENTer®www.inventer.de 6
Specify the installation location, wall opening and cable installation
Inside

Minimum distance of 100 mm
surrounding from the edge of the wall
sleeve to the wall/ceiling

Later, there must be a space of at least
250
mm in front of the wall for
maintenance work (do not cover with
cupboards).
Exterior

When specifying the installation location
consider the outside view
(e.g., weather protection hood hood flush
with lintel), see drawing to the left.

Observe the minimum distance to
bordering components [F = edge of the
window reveal] Y ≥250 mm

When creating the opening, make sure
that no one on the outside can be injured
by falling masonry.

Create a wall opening of 270 x 150 mm²
in height and width. Options would be, for
example, creating two hollowed drill holes
of Ø 150 mm or one of Ø
295 mm (see
drawing to the left).
Please take note of
slight gradient
towards
the outside (about 1° to 2°).
In the wooden pillar constru
ction, a duct
section shall be inserted with the same
interior dimensions as the framing wall.
Position the connecting line 3 x 0.75 mm²
(round cable RC) to the fan
in a manner
that the line reaches the left centre (as
seen from the inside).
Leave about 500 mm [P]
room for the
necessary electrical connection. For
longer pipe lengths, leave more room
accordingly.
Attention!
When installing the wall
sleeve, deformations caused by outside pressure should
generally be prevented, so that the thermal accumulator
can easliy be installed and
removed! Otherwise the warranty does not apply.

2. Assembly of wall sleeve (channel iV-Twin)
inVENTer®www.inventer.de 7
The thermal accumulator or suitable material must therefore be in the wall sleeve
during installation.
The screws in the fastening elements of the wall sleeve are removed only after finishing
the wall mounting work (thread protection).
Please specify the total dimension of the
wall installation from the dimension wall
strength shell construction dimensions [D]
and the measurement for the wall
connection outsid
e [E] (e.g., heat
insulation + plaster) and inside [X] (e.g.,
plaster + tiles).
After installation, the wall
sleeve must be
flush with the outside plaster and end on
the inside.
If necessary, shorten the wall sleeves
outside to meet the overall measurement,
including sliding sleeve, and de-grate
these afterwards.
The wall sleeves
are placed on top of
each other
(the milling for the connecting line must
be close together) and blocked with the
already attached adhesive tape.
Block the sliding sleeve at the wall sleeve
with a water tight adhesive tape (e.g.,
fabric tape, optional).
Slide the wall
sleeve into the prepared
wall opening.

Now seal from the outside all seams
between the sliding sleeve and the wall
sleeves
using a permanent elastic
sealant.
Guide the round cable
for connecting the
ventilation device to the controller laterally
into the wall sleeve.

2. Assembly of wall sleeve (channel iV-Twin)
inVENTer®www.inventer.de 8
Guide a second approx. 1 m long cable
(loop) from the top into the bottom pipe
(as shown on the left). It is used later for
connecting the two fans. For larger wall
sleeve
lengths, use longer cables
accordingly

Inside, the wall mounting sleeve is initially
protruding by the length [x].

The fastening elements (inside) must be
designed horizontally.

From the outside, the sliding sleeve
protrudes form the wall
mounting sleeve
by the length [E].
Inside
The distance between the wall sleeve and
the wall breakthrough (fill area [W]) must
be about 10 mm.
Secure the wall s
leeve using the
enclosed mounting wedge inside and out.
Pay attentio
n to the slope of about 1° to
2° towards the outside.

Measure the distances to the wall inside
and outside, to make sure that the wall
sleeve is flush to the plaster.
Stabilize the wall sleeve by sliding-
in the
thermal accumulator or simila
r suitable
materials.
Fill the hollow spaces with non-pressing
installation foam or similar material.

Check again the correct position of the
wall
sleeve and correct it if necessary
before solidifying.
Interior
Inside, cut off the protruding mounting
wedges and fill material.

2. Assembly of wall sleeve (channel iV-Twin)
inVENTer®www.inventer.de 9
Outside
Exterior
Outside, cut off the protruding mounting
wedges and fill material.
Now, from the inside, attach the end-stop
strap at both wall sleeves on the left, right
and top sides.

Thereafter, attach the plaster cover to the
wall sleeve, inside and outside. (Plaster
cover must be adjusted).

3. Assembly of weather protection hood 09
inVENTer®www.inventer.de 10
3. Assembly of weather protection hood 09
The weather protection hood 09 is a component of the inVENTer ventilation system. It
consists of a base plate and a stainless steel cover painted in "white", "grey" or "Nord"
(iron grey).
Technical data
Weather protection hood 09 for iV-Twin in white (Art. no. 1508-0014), grey (Art. no. 1508-0026) or
iron grey (Art.-no. 1508-0028).
Scope of supply
- Cover of weather protection hood 09 (stainless steel) in "white" (RAL9016), "grey"
(RAL9006) or "Nord" (RAL7011)
- Base plate of weather protection hood
Attention! To avoid accumulation of algae around the weather protection hood
, the
notes regarding assembly must be strictly followed (attach all sealing tapes!). In
vulnerable areas it is recommended, before installing the weather protection hood
, to
have a biocide preset / water retardant pre-treatment of the plaster surface around the
weather protection hood.
Please ask your planer!
The weather protection hood can only be installed if the outside plaster is finished and
fully hardened.

3. Assembly of weather protection hood 09
inVENTer®www.inventer.de 11
Remove the plaster cover.
The enclosed
5 cm wide foam tape,
protruding 1 cm on the outside, will be
attached to the bottom of the bottom
channel of the wall
sleeve or the sliding
sleeve. The protrusion is pressed down
into the finished and dried
outside wall
onto the plaster.
Preparing the base plate
Prepared base plate for fastening to the wall
sleeve
The board is fastened either to the facade
using 4 dowels or d
irectly to the sliding
sleeve.

Only break the openings on the board
that you need for the fastening. (The
c
ustomer side must seal possible other
openings of the board to the facade!)
Seal the outside plate to the facade using
an expansive band (suitable for
unevenn
ess up to 3 mm). For larger
gaps, the respective expansive band
must be provided by the customer. The
interior framing must be bonded
according to the wall msleeve, so that the
expansive band is tightly attached on the
sleeve on the facade (see image to the
left).
Preparing the base plate 
Fasten the board to the wall (or sliding
sleeve). Pay attention to, in case
Inserting the exterior hood
you select the fastening above the
insulating material dowel, the coverage
evenness between outside plate and
sliding sleeve (see drawing). Mask
possible openings to the wall.
The base plate can
be used as a dowel
measurement mould.
Thereafter, slide the cover
from the top
onto the base plate.
Close possible gaps between the weather
protection hood and plaster on top and at
the sides using a permanent elastic
sealant, which is also suitable fo
r the
outside.

4. Finalisation of the iV-Twin from the inside
inVENTer®www.inventer.de 12
4. Finalisation of the iV-Twin from the inside
4.1Assembling the thermal accumulator, fan and electrical connection
The thermal accumulator and reverse fan are components of the inVENTer ventilation
system. The thermal accumulator consists of a ceramic block that is enclosed by a
closed-pored insulating material.
Attention! The thermal accumulator may not be stored or stacked horizontally outside of
the wall sleeve!
Technical data
Thermal accumulator of iV-Twin with fan
Scope of supply
- Thermal accumulator [2] (consisting of ceramic and closed-pored insulating material
complete with drive (reverse fan [1]).
Remove the interior plaster cover.
Slide the thermal accumulator carefully
into the wall sleeve up to the end-stop
tape.
Now slide the fan into the wall sleeve until
it fits closely to the thermal accumulator.
With help of
the grip piece attached
centrally to the protective grid
, you are
able to remove the fan
for maintenance
purposes.
The green loop on the thermal
accumulator
must not impair the
ventilation operation.
With help from the green loop the thermal
accumulator
may be removed for
maintenance purposes.

4. Finalisation of the iV-Twin from the inside
inVENTer®www.inventer.de 13
Electrical connection
This description refers to utilising the inVENTer round cable. Other cables (Braids!)
must be connected correspondingly.
Cable in-
bound from controller plus loop
(starting direction "exhaust")
For connecting the braids please use wire
end sleeves with flange
to avoid
unwanted short circuits.
Close the braids of the two cables (those
coming from the controller and the loop),
as shown on the left, to the 3-pole plug (it
is plugged into the socket on the fan
motor).
Here, squeeze 2 braids into one
wire end sleeve (max. 1.5 mm² per
connection). Colour seq
uence: see
controller instruction / image to the left.
1. white
2. green
3. brown
4. yellow or green
5. red
6. blue
Plug twisted (starting direction "supply air")
By turning the 3-pole plug the starting
direction of the fan
and rotational
direction are changed.
It must be noted
here that operation in pairs must start
with the fan in extract mode
(image left
top) and the other fan
must be in supply
mode (image left).
Attach the sockets connected to the plugs
with the enclosed clamp, as presented in
the image on the left.

After completing the maintenance work,
the cor
rect positioning of the plug for the
supply and extract
air operation must be
checked and, if necessary, corrected.

4. Finalisation of the iV-Twin from the inside
inVENTer®www.inventer.de 14
4.2Assembly of the inner cover
The inner cover is a necessary component of the inVENTer ventilation system. It is
closeable and only suitable for indoor spaces. Therefore, it may not be used outdoors. A
dust filter is included in the first delivery. Pollen and micro filters are available upon
request. Replacement dust filters are also provided by your dealer. Operation of the
ventilation system is only permitted with inner cover plate and dust filter. Also see
"Intended use" in the general operating instructions. The inner cover is to be locked after
the system is shut off.
Technical data
Inner cover R-D290 (Art.-No. 1505-0006, round)
optional: Inner cover V-284x284 (Art.-No. 1505-0009, square)
Scope of supply
- Base plat of inner cover with hex key (not shown in image)
- Dust filter R-D290 (Art.-No. 1004-0033) / Dust filter V-284x284 (Art. -No. 1004-0062)
- White panel for inner cover
- Accessory kit (with 4 "short" and "long" screws)
Accessories (optional)
- Pollen filter R-D290 (Art.-No. 1004-0065) / V-284x284 (Art. -No. 1004-0063)

4. Finalisation of the iV-Twin from the inside
inVENTer®www.inventer.de 15
Check if the wall surface is smooth. "Rough" surfaces must be smoothed out.
Attach the base plate of the inner cover
with four screws (two lengths included in the
accessory kit) to the wall sleeve (evenly and to not over-tighten). The "inVENTer"
inscription should be at the bottom of the inner cover’s panel.
The base plate of the inner cover
should be tightly attached to the wall surface after
assembly, in order to prevent draught between the inner cover’s base plate and the wall
surface when the panel of the inner cover is closed. If necessary, a second gasket strip
(1 cm width) can be glued on, which is respectively higher. This gasket strip is already
provided on site.

The dust filter is attached in the centre on the stud bolt and is lightly pressed on the
lower section fixing tappet. Thereby, all fixing tappets should be collected.
Subsequently, the air flow seperator disc is inserted and fixed in the centre of a knurled
screw; thereby, make sure the separating strip is positioned horizontally on the back.
The panel is attached on top of the strip with the grooves and pressed into the strip
below. The cap is opened by turning it to the left and closed by turning it to the right.
During assembly of the square inner cover’s base plate
, the blue dot should be facing
upwards. The dust filter is pressed onto the fixing tappet
. Thereby, all fixing tappets
should be collected.

The separating plate is slid horizontally into the centre, as shown below. In the open
position, the cap is positioned in such a way that the word "inVENTer" can be read.
In order to close the inner cover, this
must be taken off and the separating plate
removed. For storage, the separating plate is clamped to the inside of the cap, then the
cap is turned 180° and positioned flush to the lower section.

5. Servicing and maintenance
inVENTer®www.inventer.de 16
5. Servicing and maintenance
Attention! The thermal accumulator is made of ceramic. It must not be thrown (risk of
breakage). Installation and removal should be carried out wearing gloves (risk of injury
due to sharp edges). All work may only be conducted with the system switched off (switch
off control unit and disconnect from power supply!).
General
We recommend that the inVENTer runs all year round. An average of 40x more heating
energy is saved with an input power of approx. 2.5 watts per fan (effective).
The inner cover must be open at all times in order for the inVENTer to fully function.
If the inVENTer is not in operation, then the inner cover should be closed.
The use of the inVENTer ventilation system is only permitted with a inserted filter.
inVENTer operation always takes place via the controller (see controller operation
instruction). In the case of a short-circuit, an electronic fuse switches off the controller
and therewith the ventilator. After the short circuit has been fixed, the controller must be
switched off and back on. (Attention: Controllers are only temporarily short-circuit proof).
The fans are protected electronically against blockage caused by foreign bodies. After
fixing the problem, they will start again independently.
Maintenance
The inVENTer®ventilation system is maintenance-free as far as possible. The following
activities are to be carried out regularly:
The dust filters are very durable and can be washed multiple times. We recommend
cleaning the dust filter if necessary (quarterly is recommended). Remove the filter and
clean it in warm soapy water or in a dishwasher/washing machine.
The pollen filter should only be used during critical high pollen times, as it limits
ventilation. It cannot be cleaned and thus, must be replaced. The unclean pollen filter can
be disposed of with normal waste.
Filters can be ordered (by entering the article number) at your inVENTer dealer or at
www.inventer.de.
The thermal accumulator should be checked once a year and, if necessary, cleaned
with a vacuum cleaner, high pressure air or in rinsing warm water. In addition, the system
is to be switched off and disconnected from the power source. After opening the inner
cover’s panel and unscrewing the base plate, disconnect the power supply, remove the
fan and the thermal accumulator (pull the green strap) from the wall sleeve. Now the
thermal accumulator can be cleaned. If necessary, the wall sleeve can be cleaned from
the inside with, e.g., a damp cloth.
Installation takes place in reverse order. Make sure that the ventilation screen is visible
after plugging the ventilator back in and the 3-pin plug is correctly inserted. Check the
starting direction of the ventilator.
Check the fan annually to make sure it is clean. The fan blades can be carefully cleaned
with a soft, damp cloth.

5. Servicing and maintenance
inVENTer®www.inventer.de 17
Fixing malfunctions
Should malfunctions arise, please check first whether the problem can be fixed by using
the following instructions. If the malfunction cannot be fixed, then please contact your
authorised dealer.
Malfunction Possible cause Repair
Fan is not
working
No electrical voltage Turn power off and back on via the mains fuse
in the junction box.
Installation failure Check all cables for correct connection and if
the plug is inserted correctly
Fan sticks
Switch controller off! Remove object
Controller in
"Service function"
mode
The ventilator can be stopped for 60 mins with
the service function. Resetting the service
function takes place via the mains fuse in the
junction box.
Controller is not
correctly calibrated
Calibrate controller as described in the
instructions (only with remote variations)
Controller is
defective
Replace controller
Fan motor is
defective
Check fan and replace if necessary
Cold air
supply
Controller in
"ventilation" mode
Check controller operation mode in which heat
recovery does not take place in operating mode
"ventilation".
Installation failure Check that the 3-pin plug is correctly inserted
Air flow is
limited
Inner cover opened
incorrectly
Make sure inner cover is completely open
Air filter very soiled Cleaning the filter
Micro filter inserted
/ very soiled
Air flow is limited with the use of a micro filter or
soiled pollen filters. Micro filters should only be
used seasonally, replace pollen filter if
necessary.
Heat storage tank
very soiled
Cleaning the thermal accumulator
Noise level Fan blades very
soiled
Cleaning the fan blades
Thermal
accumulator not
moved outside
Slide the thermal accumulator into the wall
sleeve until it is against the end-stop strap.
Additional noise
insulation required
Outside noise (street noise) can be reduced by
using a noise insulation mat.

Personal notes (e.g., responsible authorised dealer; invoice number / delivery note
number):