Installation guide inVENTter 14
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Installation guide inVENTter 14 , HRV

Installation guide inVENTter 14 , HRV

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Installation guide inVENTter 14 Document Transcript

  • 1. inVENTer® – System Simply fresh air up to 91%heat recoveryInstallation 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 14VStand: 10/2010 1
  • 2. 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 andregulations 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
  • 3. 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 valveinVENTer® www.inventer.de 3
  • 4. 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])inVENTer® www.inventer.de 4
  • 5. 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.inVENTer® www.inventer.de 5
  • 6. 1a. Installation of the round tube (iV14R)Installation of the tube:tools:  measuring tape, water-level, angle grinder, cutter, knife or file, screw driverauxiliary materials:  2-component foam (for doors)Attention:  Avoid deformation during installation of the tubes! Otherwise the cartridges with the heat accumulator wont 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.inVENTer® www.inventer.de 6
  • 7. 1a. Installation of the round tube (iV14R)  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.inVENTer® www.inventer.de 7
  • 8. 1a. Installation of the round tube (iV14R)  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.innenAir 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).insideinVENTer® www.inventer.de 8
  • 9. 1a. Installation of the round tube (iV14R) 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 sleeveinVENTer® www.inventer.de 9
  • 10. 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])inVENTer® www.inventer.de 10
  • 11. 1b. Installation of square duct (iV14V)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.inVENTer® www.inventer.de 11
  • 12. 1b. Installation of square duct (iV14V)Installation of the duct:tools:  measuring tape, water-level, angle grinder, cutter, knife, screw driverauxiliary materials:  2-component foam (for doors)Attention:  Avoid deformation during installation of the tubes! Otherwise the cartridges with the heat accumulator wont 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.inVENTer® www.inventer.de 12
  • 13. 1b. Installation of square duct (iV14V)  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.inVENTer® www.inventer.de 13
  • 14. 1b. Installation of square duct (iV14V)  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.insideAir 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).insideinVENTer® www.inventer.de 14
  • 15. 1b. Installation of square duct (iV14V) 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 sleeveinVENTer® www.inventer.de 15
  • 16. 2. Installation of the exterior hood2. 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 boardShipment (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.inVENTer® www.inventer.de 16
  • 17. 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 stripouter board, rear side: waether strip prepared touches the tube when the outer board isfor 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.inVENTer® www.inventer.de 17
  • 18. 3.1 Installation of the heat cartridge and electric connections3.1 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.)inVENTer® www.inventer.de 18
  • 19. 3.1 Installation of the heat cartridge and electric connectionsElectrical 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 airinVENTer® www.inventer.de 19
  • 20. 3.2 Installation of the inner valve3.2 Installation of the inner valve 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)inVENTer® www.inventer.de 20
  • 21. 3.2 Installation of the inner valvetool:  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.inVENTer® www.inventer.de 21
  • 22. Service + MaintenanceService 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 warmsoapy 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 becleaned in a dishwasher or with a vacuum cleaner. First switch off power, open the valve anddismount the fixture. Disconnect the fan and take it out – Dont clean the fan in thedishwasher! 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 offilters is carried out, dust and grease may slowly build up inside the fans. This will reduceefficiency. 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 .inVENTer® www.inventer.de 22
  • 23. Service + MaintenanceTrouble shooting:Should problems occur please refer to the items below before calling us or yourrepresentative.problem cause solutionThe fan No voltage Switch the fuse on and offisn´t Installation See the ends of the cables. Plugs should sit inworking 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 specialistCold Controller in mode Change the operation mode or reduce the airsupply 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. dirtyHigh 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.inVENTer® www.inventer.de 23
  • 24. Personal notes: (your representative, your installer, invoice number etc.):Öko-Haustechnik inVENTer GmbHOrtsstraße 4aD-07751 Löberschütz, GermanyTelefon: +49 (0)36427 – 2192 0Telefax: +49 (0)36427 – 2192 13info@inventer.euwww.inventer.euCopyright: Öko-Haustechnik inVENTer GmbH