Installation guide inVENTter 14

inVENTer® – System
Simply fresh air
up to 91%heat recovery

Installation Guide inVENTer®- ventilation system: iV14R and iV14V

Please take the necessary care and attention when transporting and unpacking the unit.
Any damage to the packaging must be recorded on the delivery note on receipt of the
goods. Dispose of the packaging materials in an environmentally safe manner. Please
retain the invoice and all documents.
The building must be completed before the ventilation system can be used!

Identification mark:
inVENTer14R / inVENTer14V, according to German certification DIBt: Z-51.3-156
Producer: Oeko-Haustechnik inVENTer GmbH, Ortsstrasse 4a, D-07751 Loeberschuetz

Overview:
1: exterior weather hood
2: outer board
3: inner valve cover
4: inner valve sound protector
5: lower part of the inner valve
6: dust filter
7: reversal fan
8: ceramic heat accumulator
9: fixed tube

iV14R with round inner valve

inVENTer 14R inVENTer 14V

Stand: 10/2010 1

Installation iV14R/V „General part“

inVENTer® Quality & Guarantee

The inVENTer® system is designed and produced in Germany. The inVENTer® is made of
corrosion-resistant, very durable materials such as plastic (no PVC), ceramic and
stainless steel. All our products are covered by guarantee for 2 years.
Furthermore there is a 10 year guarantee on the ceramic heat accumulator.
An additional 3 years guarantee can be purchased.

Please follow the instructions in the installation manual. Failure to do this will
invalidate the guarantee.

Liability:
The inVENTer ventilation unit was designed for comfortable ventilation in residential
buildings. Use in any other way is considered as being an unauthorised use that can
result in damage to the unit and/or injury to persons, for which the manufacturer cannot
be held responsible.
The manufacturer assumes no liability for damage or injury attributable to:
 Failure to observe the safety, operating and maintenance instructions in this
manual.
 The use of materials not supplied by the manufacturer. The responsibility here lies
solely with the company installing the unit.
 Normal wear.
DO NOT USE IN PERMANENTLY DUSTY ROOMS AND IN ROOMS WITH ABRASIVE AND CORROSIVE
GASES.
DURING BUILDING WORK, CLOSE THE VENTILATION SYSTEM AIRTIGHT. FINISH THE BUILDING
BEFORE THE BEGINNING OF INSTALLATION OF THE VENTILATION SYSTEM! INFORM OTHER
TRADES- PEOPLE AND THE WORKS SUPERVISOR .
DON´T USE THE INVENTER DEVICES TO DRY A BUILDING, DURING BUILDING OR DURING
GRINDING PROCEDURES.

Safety
Observe the safety regulations and warnings contained in this manual at all times. Failure
to do so may result in damage to the unit or personal injury.
The Heat Recovery Ventilator is a „SELV“ (Safety Extra Low Voltage) ventilator which
operates at 7-15 volts DC. Under no circumstances must this be connected directly to the
mains supply. Damage so caused is not covered by the guarantee. The low voltage used
by the ventilator must be provided by the controller supplied.
Attention! If used in the same building as open fires, the relevant standards and
regulations must be observed by the installing company.
With the exception of room sealed units (balanced flue), all fuel burning household
appliances, including open fires require air for combustion. Heat Recovery Ventilation
(HRV) systems can interfere with the supply of this air. Always ensure that there is an
adequate combustion air supply to rooms housing flued appliances. HRV systems draw
fresh air from outside the dwelling to replace the exhausted stale air. Take care to ensure
that the fresh air intake is not sited close to any form of flue outlet to prevent poisonous
fumes from being drawn into the home.

inVENTer® www.inventer.de 2

Installation iV14R/V „General part“

Installation Manual „general part“
The installation manual consists of the general section, and the manuals of the components
(inner valve, tubes/ducts, heat cartridge and outer hood).

Read these instructions carefully before beginning any installation procedure. Failure to
follow them closely may reduce ventilation effectiveness, cause a hazardous condition,
and/or invalidate your guarantee.
PS: 25 mm = 1 inch!
INSTALLATION CAN ONLY BE CARRIED OUT BY A SUITABLY QUALIFIED CRAFTSMAN AND
CONNECTED TO THE ELECTRICAL SUPPLY BY A QUALIFIED ELECTRICIAN.

Planning of the ventilation (project):
Fully prepare the project before starting the installation:
The project gives you number, type and the right location of all inVENTer devices and
controllers including the starting direction of the fans. To guarantee the function make
sure the following rules are applied:
Pairwise working of all fans: „Supply air = outlet air“ the same number of devices work
against the same number of devices (odd number). Change the starting direction of the
fans if nessaccary (see the project and the installation manual). At the factory all fans are
prepared for "outlet air“.
Wireless synchronisation: Also a group of not cabled inVENTer devices have to work
pairwise. Use the latest controller ZR7 to synchronisize this group wirelessly. (read the
installation manual of the controller ZR7)
cross ventilation: the single room ventilation system use the room for "ducting“.
Therefore all inner doors must possess gaps (1cm at the bottom of the door) or
ventilations grids of 100 cm². Alternativly unscrew the door angles 5 mm.

Order of installation:
Follow the order of installation exactly:
(Attention – Inform and speak with other building trades (bricklayer, electrician etc.)!
1. Installation of the tube/duct
1.a round tube (iV14R)
1.b square duct (iV14V)
2. Complementation of the iV14R/V outside
3. Complementation of the iV14R/V inside
3.1 Installation of the heat cartridge and electrical connection
3.2 Installation of the inner valve


1a. Installation of round tube (iV14R)

1a. Installation of the round tube iV14R
The tube is a component of the inVENTer system and made of plastic ABS.

Attention:Read the following relative instructions if you ordered a sliding sleeve!

Technical data

tube iV14R (Art.-Nr.1506-0037)
with sliding sleece (Art.-Nr. 1506-0048)

Shipments:
- tube iV14R: Art.-Nr. 1506-0037 (450 mm) / 1506-0038 (650 mm) / 1506-0039 (850 mm)
- foam wedges
- plaster cover (cut yourself)
- asseccories kit (foam tape, weather strip, stopper tape)

Shipments (optional):
- Sliding sleeve for tube iV14R (1506-0048) with asseccories kit (weather strip,
screws+washers)
- sound insulating mat (Art.-Nr. 1004-0057)
- fabric tape (Art.-Nr. 1004-0051) (to fix the sliding sleeve)
- two-component foam (Art.-Nr. 1004-0050)
- dowel kit for insolation panels (Art.-Nr. 1004-0067)
- flat cable (Art.-Nr. 1004-0006 [33 m] / Art.-Nr. 1004-0007 [per m])
- round cable (Art.-Nr. 1004-0020 [33 m] / Art.-Nr. 1004-0049 [per m])


1a. Installation of the round tube (iV14R)

Configure the location of the vents and cables
Inside:
 Site the inVENTer close to the ceiling. This
will ease the installation of the power cable
and give you the best position for air
circulation.
 Make sure there is a minimum distance of
100 mm (edge of the tube to wall/ceiling)
 Don´t forget spare room of 250mm in front
of the inner valve (don´t put up furniture).
Outside:
 Keep in mind the exterior view. (e.g. top of
the window = top of the outer hood)

 Minimal distance 200 mm to the next
building element [F=window]  Y > 250
mm
 Drill the hole making sure that masonary
does not fall and injure people or damage
property below.

 InVENTer is designed to be installed using
a 230 mm Core Drill system.
 The hole needs to be angled downwards
very slightly to outside (1% / 2 degrees).
 Lay the flat cable 6x0,25 mm² (FK) or the
round cable 3x0,75 mm² (RK) from the
controller to the inVENTer devices (in
picture right on the top).
 Lay about 500 mm extra cable in the tube.

advice:
 Read the extra controller manual and the circuit diagram!
 Use our flexible round or flat cable.
 Locate the controller in a public place in a similar way to light switches.
 Set the junction boxes vertically and squared up to the plaster.
 Protect the installed boxes against dust and dirt during the building period.



Installation of the tube:

tools:
 measuring tape, water-level, angle grinder, cutter, knife or file, screw driver

auxiliary materials:
 2-component foam (for doors)

Attention:
 Avoid deformation during installation of the tubes! Otherwise the cartridges with
the heat accumulator won't fit inside. This invalidates your guarantee.
 Please use only non-oppressive assembly foam (2 component foam).
 Install the tube outside airtight and inside vapour tight. Use special adhesive tapes
and ask your foreman/specialist.
 The fixing points of the tube are filled with short screws. Remove these screws
after the finishing of all dusty/dirty works.



 Measure out the total wall thickness. This is:
outer plaster/insolation thickness (E) + brick
thickness (D) and inner plaster thickness
(X).
 The tube should not extend beyond the wall
finisher inside and outside!

 Slide the length of the optional sliding sleeve
and the tube to fit / match the total wall
thickness [E+D+X].
 Fix an additional tape between the sliding
sleeve and tube, if the gap between both is
too big.
 Glue both parts together with water-resistant
tape (e.g. the optional fabric tape).

 Place the tube in the hole.
 Lay the ribbon or round cable laterally into
the tube.
 Without plaster you have the overhang (X).
 Outside the same do apply. Without plaster,
you have also the overlap (E) of the tube or
of the sliding sleeve.



 The distance (W) between tube and vent is
10 mm minimum (foam gap).
 Set the inner attachment points of the tube
at "3, 6, 9 and 12 o`clock“. Set the outer
attachment points of the optional sliding
sleeve at 3 and 9 o`clock. (Use the water-
level)
 Fix the tube in the wall temporarily with foam
wedges both inside and outside.
 Ensure that the tube slopes downwards
towards outside wall.
 Make sure the tube is exactly positioned!
 Stabilize the round tube using the heat
cartridge or by other auxiliary material.
 Fill the gap between tube and vent with 2-
component foam.
 (advice: Cool the tin in cold water. The foam
needs longer to harden)
 Check a final time that the right position of
the tube in the wall and adjust it again if
necessary.

innen

Air tightness Inside:
 Cut away the lap foam wedges and the lap
and hard 2-compound foam.
 Glue a difussion resistant foil around the
tube (vapour barrier).

inside



outside:
 Glue a difussion open foil around the tube
(vapour brake).

outside

 To fix tube without sliding sleeve: Cut the
tube finally to the total thickness of the wall
using an angle grinder and finish off with a
file/ knife or good quality sand paper to
remove steps and swarf.

 Apply strip(stopper tape) around at the end
of the tube (to stop the cartridge later). Miss
out the bottom side.
 To prevent contamination before finishing,
cover the tube with the delivered material
(plaster cover). Tailor it to the required form.

outside with sliding sleeve


1b. Installation of square duct (iV14V)

1b. Installation of square ducts (duct iV14V)
The duct is a component of the inVENTer system. It is made of plastic ABS.

Attention:If you ordered the sliding - sleeve, see the pertinant advice in this manual!

Technical data

duct iV14V (Art.-Nr.1506-0042)
with sliding sleeve (Art.-Nr. 1506-0049)

Shipment:
- duct iV14V: Art.-Nr. 1506-0042 (450 mm) / 1506-0041 (650 mm) / 1506-0040 (850 mm)
- foam wedges
- plaster cover (cut yourself)
 accessories kit (foam tape, weather strip, stopper tape)

Shipments (optional):
- sliding sleeve for duct iV14V (1506-0049) with accessories kit (screws and washers)
- sound insulating mat (Art.-Nr. 1004-0057)
- fabric tape (Art.-Nr. 1004-0051) (to fix the sliding sleeve to the duct)
- 2-component foam (Art.-Nr. 1004-0050)
- dowel kit for insulation panels (Art.-Nr. 1004-0067
- flat cable (Art.-Nr. 1004-0006 [33 m] / Art.-Nr. 1004-0007 [per m])
- round cable (Art.-Nr. 1004-0020 [33 m] / Art.-Nr. 1004-0049 [per m])



Configure the location of the vents and cables
Inside:
 Site the inVENTer close to the ceiling. This
will ease the installation of the power cable
and give you the best position for air
circulation.
 Make sure there is a minimal distance of
100 mm (edge of the tube to wall/ceiling)
 Don´t forget spare room of 25 cm in front of
the inner valve (don´t put up furniture).
Outside:
 Keep in mind the exterior view. (e.g. top of
the window = top of the outer hood)

 Minimum distance of 200 mm to the next
building element [F=window]  Y: > 250
mm
 Drill the hole/Open the vent making sure
that masonry does not fall and injure
people or damage property below.

 Make a hole/vent of about 210 x 210 mm
 The hole/vent needs to be angled
downwards very slightly to outside (1% / 2
degees).
 Lay the flat cable 6x0,25 mm² (FK) or the
round cable 3x0,75 mm² (RK) from the
controller to the inVENTer devices (in
picture right on the top).
 Lay about 500 mm extra cable in the tube.

advise:
 Read the extra controller manual and the circuit diagram!
 Use our flexible round or flat cable.
 Locate the controller to a public place in a similar way to light switches.
 Set the junction boxes vertically and squared up to the plaster.
 Protect the installed boxes against dust and dirt during the building period.



Installation of the duct:

tools:
 measuring tape, water-level, angle grinder, cutter, knife, screw driver

auxiliary materials:
 2-component foam (for doors)

Attention:

 Avoid deformation during installation of the tubes! Otherwise the cartridges with
the heat accumulator won't fit inside. This invalidates your guarantee.
 Please use only non-oppressive assembly foam (2 component foam).
 Install the tube outside airtight and inside vapour tight. Use special adhesive tapes
and ask your foreman/specialist.
 The fixing points of the tube are filled with short screws. Remove these screws
after the finishing of all dusty/dirty operations.



 Measure out the total wall thickness. This is:
outer plaster/insolation thickness (E) + brick
thickness (D) and inner plaster thickness
(X).
 The ducts hould not extend beyond the wall
finisher both inside and outside!

 Slide the length of the optional sliding sleeve
and the duct to the total wall thickness
[E+D+X].
 Fix an additional tape between sliding sleeve
and duct, if the gap between both is to big.
 Glue both parts together with water-resistant
tape (e.g. the optional reinforced tape).

 Place the duct in the vent.
 Lay the round or flat cable from the
controller to the duct (on the right on the
top).
 Without plaster, you have the overhang (X).
 Outside the same applies. Without plaster,
you have also the overlap (E) of the tube or
of the sliding sleeve.



 The distance (W) between duct and vent is
10 mm minimum (foam gap).
 Set the inner attachment points of the duct at
"3, 6, 9 and 12 o`clock“. Set the outer
attachment points of the optional sliding
sleeve at 3 and 9 o`clock. (Use a spirit -
level)
 Fix the duct in the wall temporarily with foam
wedges both inside and outside.
 Ensure that the tube slopes downwards
towards outside wall.
 Make sure the tube is exactly positioned!
 Stabilize the square duct using the heat
cartridge or by other auxiliary material.
 Fill the gap between duct and vent with 2-
component foam.
 (advice: Cool the tin in cold water. The foam
needs longer to harden)
 Check a last time the right position of the
duct in the wall and adjust it again if
necessary.

inside

Air tightness Inside:
 Cut away the overlap of the foam wedges
and the overlap of the hard 2-compound
foam.
 Glue a difusion resistant foil around the
tube (vapour barrier).

inside



outside:
 Cut away the overlapping parts of the
wedges and of the hard 2-compaound foam
 Glue a diffusion open foil around the tube
(vapour brake).

outside

 Fix the duct without sliding sleeve: Cut the
duct finally to the total thickness of the wall
by help of an angle grinder and finish off with
a file/ knife or good quality sand paper to
remove steps and swarf.

 Apply strip (stopper tape) around at the end
of the tube (to stop the cartridge later). Miss
out the bottom side.
 To prevent any contamination before
finishing, cover the duct with the delivered
material (plaster cover). Tailor it to the
required form.

outside with sliding sleeve


2. Installation of the exterior hood

2. Installation of the exterior hood 09
The outer hood 09 is a component of the inVENTer system. It comprises of the outer
plastic board (made of ASA) and the stainless hood coloured white or stainless.

Technical data

Exterior hood in bright (Art.-Nr.1508-0003) or in white (Art.-Nr.1508-0012)

Shipment:
- stainless hood 09 in „bright“ or „white“
- outer plastic board
Shipment (optional):
- Storm blocker SB (Art.-Nr. 1004-0068)
- Wind protection WS14 (Art.-Nr. 1004-0069)
- dowel kit for insulation panels (Art.-Nr. 1004-0067)

Installation of the outer hood:

tools:
 knife / scissors, water-level, screw driver
 The necessary auxiliary material contains the accessories kit of the tube. (foam tape,
weather strip, screws)

Attention:
 To avoid algae spots around the outer hood, read the instructions in the manual.
Use the weather tape as shown. In humid areas we recommend biozide plasters
and colors/coatings. Ask your foreman/specialist.


2. Installation of the exterior hood

 Remove the plaster cover.
 Paste the included 15 cm long and 5 cm
wide foam band outside on tube and wall as
it is shown in the picture.

Prepare the outer board:  Fix the outer plastic board with 4 dowels to
the facade or:
 Sliding sleeve: Fix the outer plastic board
with 2 screws to the sleeve directly.
 Open only the small holes in the outer
plastic board which are necessary. Tighten
all other gaps of the outer board to the
facade.
 Paste the black weather strip on the rear
(wall-side) of the outer board in the shown
way. The strip tights gaps between outer
board and facade up to 3 mm. Bigger gaps
must be tightened by additional weather
strips. The glued ring of weather strip
outer board, rear side: waether strip prepared
touches the tube when the outer board is
for tube installed.
Install the outer board:
 Fix the outer board to the facade or to the
sliding sleeve as shown. Check the center
point of the hood (left drawing)

Install the outer hood:  Slide the outer hood from „tip to toe“ of the
outer board.
 Finally you should seal the hood with
permanently elastic cement.


3.1 Installation of the heat cartridge and electric connections

The heat cartridge is a component of the inVENTer system. It consist of the ceramic
block, the closed cell wrapping (foam) and the reversal fan.

Technical data

Round heat cartridge (iV14R) Square heat cartridge (iV14V)

Shipment:
- heat cartridge (consist of the ceramic block [3], closed cell foam [2] and the drive (reversal
fan [1])

Installation:

tool:
 small screw driver, crimp pincer

 Remove the plaster boards.
 Push the heat cartridge up to the stopper
tape in the tube. (Use the green handle to
remove the heat cartridge out of the tube for
service.)



Electrical connections:
 This description explains the use of ribbon cable (delivered by inVENTer). Use other
flexible cables in a similar way.

 Connect the cable to the 3-pole turnable
plug (plug sticks in the bus at the fan).
 Drill the neighboring cores for the ribbon
cable (2 + 2+ 2).
 You can also connect a second cable to wire
another unit.
 Always use a ferrule per 2 or 4 leads.

cable from controller at plug (starting exhaust air)

 Set up the starting ventilation direction via
the rotation of this plug. Please note, that
inVENTer 14 units work in pairs (one unit
has to start in exhaust mode – as in the
picture above - and the other unit in supply
mode – as in the picture below.
 The plug is set in the factoryfor starting
exhaust air.
 Finally push the interbus in the back of the
heat cartridge.

plug turned for fan starting supply air



The inner valve with dust filter is a component of the inVENTer system. It is closeable
and used for indoor (not for outdoor use). You can optionally order additional dust filters
and allergic filters. Normal use is with filters. Using without the filter can damage the
reversal fan. Switched-off systems should be closed.

Technical data

Round inner valve (Art.-Nr.1505-0004) Squared inner valve (Art.-Nr.1505-0008)

Shipment:
- lower part of the valve [1] with hexagon socket key (notshown in the picture)
- round dust filter [2] (Art.-Nr.1004-0033) or square (Art.-Nr.1004-0062)
- upper part of the valve [3] with silencer mat [4]
- accessories kit (with 4 long and short screws)

Shipment (optional):
- inner sound protection SDE 14 (Art.-Nr. 1004-0028, only for the round inner valve)
- allergic filter (round type Art.-Nr. 1004-0065, square type Art.-Nr. 1004-0063)



tool:
 hexagon socket key (see the upper part of the inner valve)

 Verify the flatness of the inner wall and remove any uneveness, if necessary.
 Fix the lower part of the inner valve with 4 screws with the attachment points of the
tube. Ensure the correct length. Screw the lower part of the inner valve hand tight.
 Gaps behind the inner valve can generate draft air. In this case, glue a second
weather strip of 1 cm in the empty notch of the upper part of the inner valve (not
delivered).
 Press with fingers the dust filter on the tops of the plastic needles.

 The "inVENTer“ logo on the lower part of the round valve should be at the bottom.
Set first the notches of the round cover on the upper legs to the lower part of the
round valve. Press now with fingers the lower legs into the lower notches of the
round cover. Turn to the left to open and turn to the right to close the valve.

 Fix the lower part of the square valve. The "blue point“ is located on top. Open valve:
The cover hangs on top of the four legs. The "inVENTer“ logo is readable. To close
the valve: The cover is removed and turned (180°). There should be no gap visible.


Service + Maintenance

Service and maintenance

Caution
Before performing any service to your inVENTer®, switch off the unit and
disconnect power to the unit. The ceramic heat accumulator is fragile. Don´t throw
it. For fitting and removing use gloves (sharp corners could cause injury).
General advice:
1. The inVENTer® - ventilation system is developed for continuous use with a minimum of
maintenance and service. We recommend using the inVENTer® all the year. Energy
consumption is only about 2 W/h per unit, but you save 40 times more heating
energy.
2. The inner valve must be open (turn to the left).
3. If the controller is "off“ close the inner valve (turn to the right).
4. You can change the speed and working mode at the controller (see controller manual).
5. In the event of a short circuit, electrical and thermal fuses switch off the controller and
the inVENTer® units. Remove the disturbance and switch the controller off and on
again.
6. There is an electrical protection against clogging by foreign particles, that will stop
inVENTer® automatically. Switch off the controller and remove the particles in this
event.
Maintenance:
inVENTer® - dust filters are very durable and can be cleaned several times.
We recommend cleaning the dust filter as necessary, normally every month. Wash in warm
soapy water. Replace the filter when necessary.
The pollen filter cannot be cleaned and must be changed as necessary.
The cartridge with the heat accumulator should be checked every three months. It can be
cleaned in a dishwasher or with a vacuum cleaner. First switch off power, open the valve and
dismount the fixture. Disconnect the fan and take it out – Don't clean the fan in the
dishwasher! Take out the cartridge with the heat accumulator and clean it.
Check the fans once a year. Even if the required maintenance, such as cleaning/changing of
filters is carried out, dust and grease may slowly build up inside the fans. This will reduce
efficiency. The fans can be cleaned with compressed air and a soft, damp cloth.
You can order replacement filtration materials from your inVENTer®-representative or under:
www.inventer.eu .


Service + Maintenance

Trouble shooting:
Should problems occur please refer to the items below before calling us or your
representative.

problem cause solution
The fan No voltage Switch the fuse on and off
isn´t Installation See the ends of the cables. Plugs should sit in
working mistake the sockets. Missing ferrules generate short
circuits.
Fan is blocked. Switch off the controller and remove the
object.
Controller ZR7 is Wait 60 min or click the right button 4 times.
in mode „service“
Wireless Program the sender with the controllerZR7E
connection of (wireless solution)
controller ZR7 is
not programmed
Controller defect Change the controller by your specialist
Reversible fan Clean the fan, see the cables of the interbus or
defect change the fan by specialist
Cold Controller in mode Change the operation mode or reduce the air
supply air „permanent flow in winter.
ventilation“ or very
low outer
temperatures
Installation See the cables of the interbus or call your
mistake specialist.

Insufficient Inner valve is Open the inner valve.
air flow closed
Dust or allergic Clean the dust filter or fit the allergic filter
filters are dirty rather than the dust filter.

Heat cartridge Clean the heat cartridge.
dirty
High sound Fan blades are Clean the blades with a wet cloth.
level dirty
Heat cartridge is Push the heat cartridge as far outward as
located inside. possible.

„light“ rooms, to Use additional sound protection SDE and SM.
much echo It reduces also the noise of the street.


Personal notes: (your representative, your installer, invoice number etc.):

Öko-Haustechnik inVENTer GmbH
Ortsstraße 4a
D-07751 Löberschütz, Germany
Telefon: +49 (0)36427 – 2192 0
Telefax: +49 (0)36427 – 2192 13
info@inventer.eu
www.inventer.eu

Copyright: Öko-Haustechnik inVENTer GmbH

Installation guide inVENTter 14

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