Brochure - Itho Daalderop EXPORT
Contents
1. ventilation unit must be maintained on a regular basis This concerns the motor fan in the unit which must be cleaned once every five years Depending on the level of contamination the frequency can differ for each installation Maintenance of the air extract grilles The grilles can be easily cleaned with running hot water under or in the dishwasher without the need to use any abrasive detergents Maintenance of the Background Ventilators The ventilators are usually equipped with mosquito gauze and must be cleaned regularly in accordance with the maintenance instructions for the ventilators in question Maintenance of the HR high efficiency cooker hood The filters of the high efficiency cooker hood require regular cleaning Depending on the degree of contamination this will have to be i s Bise z m gt a Vie h A i u lt gt a a done about once every three months The filters can be cleaned in the dishwasher Ducts As the ducts run directly from the DemandFlow plenum box to the extraction valves maintenance of these ducts is extremely easy The maintenance frequency depends on the contamination of the air extracted from the various rooms Contamination of ventilation ducts can sometimes reach critical levels therefore regular inspection and cleaning approx once every four years is a requirement T2. Itho DemandFlow About Itho With a long established reputation for manufacturing and supplying reliable efficient products Itho B V has been successfully providing energy efficient climate solutions since 1919 With its UK division Itho Ventilation Limited the UK can now take full advantage of its environmentally conscious ventilation systems perfectly timed for compliance with our ever tightening building regulations Originating within the heart of the Netherlands the home of clean living Itho has invested enormously in energy saving technologies and continues to research new ways to improve their products in order to remain one step ahead of Government legislation Offering ventilation systems both with and without heat recovery the aim is to offer solutions that leave your home feeling fresh and comfortable eliminating unwelcome odours and putting a stop to condensation and all its nasty after effects Combine this with energy saving technology and Itho are well on their way to becoming the number one choice As awareness of the benefits of airtight homes increases so too does the need for mechanical ventilation and soon every house in the UK will require some form of mechanical intervention Since the 1960 s we have witnessed many developments within the building industry to help reduce our carbon emissions and considering that 27 of the UK s total CO emissions comes from the energy we use
3. following modes are available Eco 1200 PPM Comfort 1000 PPM HR cooker hood Timer St ri LAL E 1 J yo p 111 BEE Benen CTT TL BEBENESC 08 E 13 In Eco mode the system will continue to ventilate until CO levels have dropped below 1200 PPM The level of ventilation depends on the extent to which the number of PPM is exceeded This process is fully automated In comparison CO levels in the open air range from 350 to 400 PPM depending on the surroundings and the season For further information on the indoor environment see What is CO and what does it mean for the air guality in a house elsewhere in this brochure are BEE S m UMENIE NE i r if la lila After a fixed period the motorless HR cooker hood will be automatically switched off The timer mode ensures that ventilation in the living room or the kitchen is temporarily increased night time ventilation When the occupant presses the timer function once the system ventilates in the higher ventilation mode for a period of 3 hours When pressed twice the system will ventilate in the higher mode for a period of 6 hours For extensive technical information please refer to the user manual Ventilation unit type CVE ECO 2 HP The unique central extract ventilation unit CVE ECO 2 HP regulates the mechanical extraction of air This extract unit is fitted with an electric co
4. in our homes it is as good a place as any to start tightening the belt With the development of low consumption DC direct current motors Itho guarantee that all units fitted with this efficient device will demand less power than that of a standard AC motor in some cases making a saving comparable to the annual consumption of a standard refrigerator with a freezer compartment As technology continues to advance there is no real reason why a product that requires a continued energy supply cannot be energy efficient Not just in the business of mass selling they care about their products and will endeavor to ensure you receive the best results from your chosen system Installation can have a dramatic effect on the efficiency of a product and with their team of qualified installers Itho can ensure each unit s potential is fully maximised In support of its commitment to the industry Itho Ventilation Limited is a member of the Construction CPD Certification Scheme and run a number of courses on the future of ventilation and installation practice CERTIFIED Construction CPD Certification Service Supporting you through the entire process Itho offers a full service from design to installation and commission to after sales advice Understanding the importance of customer service Itho is passionate about its products and is dedicated to providing its customers with the best possible care Whethe
5. large scale renovation It also has a flexibility which means that it is easier to make design changes even near the end of the construction Routing the ducts through a plenum box makes it possible to add additional extract points or move them to a different location within a room What is CO and what does it mean for the air quality in a dwelling CO is carbon dioxide The amount of carbon dioxide is expressed in pom parts per million In other word in litres of CO per one million litres of air The amount of carbon dioxide indicates the necessity for ventilation in the presence of humans and animals When the carbon dioxide which is produced in the dwelling is extracted to an acceptable level this generally means that the ventilation is also adequate for removing other airborne waste products such as combustion gases moisture and volatile organic substances from construction materials The average amount of carbon dioxide in the outside air ranges between 350 400 ppm In a dwelling this rises rapidly due to people and animals exhaling carbon dioxide and the burning of gas for heating and cooking The recommended values for the interior climate range from 1000 comfort to 1200 Eco ppm with 1200 ppm being used as a reference for the lowest acceptable quality in current legislation in some countries When carbon dioxide levels exceed this amount this creates stale air and may cause health and well b
6. on Trent DE14 2WX T 0870 460 6741 F 08704606742 Wiii E info itho co uk www itho co uk i irmi
7. s In addition each duct into the plenum box has its own individual control valve The CO sensor regularly samples and measures the air from every room and as soon as CO levels rise to the pre set level the system will automatically boost ventilation in that room It does this by opening the duct valve for that room and if required turns up the extractor fan In addition to this the system also measures the relative humidity RH in the bathroom up to 2 bathrooms When humidity in the bathroom rises the system will immediately increase ventilation in this room until the relative humidity is back to a normal level Compliance in the UK and Ireland The DemandFlow demand controlled ventilation system in operation complies with the ventilation strategy adopted in Approved Document F section 0 13 0 15 for extract ventilation from rooms where most water and or pollutants are released either by intermittent or continuous extract and whole building ventilation The quiet operation of this system also meets the reference for minimising the noise levels in section 0 32 and the Control of Ventilation in sections 0 18 0 19 where humidity controlled devices are suggested to regulate the humidity of indoor air and minimise the risk of condensation and mould growth Additionally the ventilation unit used by this system is the Itho CVE ECO 2 HP which is a SAP Appendix O Eligible MEV and in many installations wil
8. addition to the known permeability of the building fabric the air supply enters the house through Pressure Sensitive Background Ventilators These airflows must always be well balanced A ventilation calculation therefore has to be made for the installation of the Itho DemandFlow system This calculation is needed for the duct design determining the necessary number of units determining the number and type of extraction and supply components determining the distance between the ventilation extract and the fresh air supply A ventilation calculation can be made as follows determining the necessary extraction capacity determining the necessary supply capacity determining the internal airflows flows to other rooms Duct design The ducting can be designed on the basis of the ventilation calculation It is also necessary to make a pressure loss calculation The ducting system must meet the following criteria use of the right air extract grilles use of the right self regulating pressure sensitive background ventilators a maximum airflow speed of 4 0m s or less ISSO 62 Standard GIW ISSO 2007 the total resistance of the ducting system must be less than the maximum resistance that can be dealt with by the extractor unit DEMANDFLOW EXTRACT INSTALLATION OPTIONS 2 Bedroom Houses Apartment House 3 Bedrooms 4 Bedrooms Kitchen Kitchen Open plan Closed
9. dining rooms and bedrooms The rate of ventilation in the dwelling is controlled on the basis of CO measurements in each room If a party were being hosted until late at night then the ventilation system would continue to run at maximum power until the early hours When the occupants go on vacation and the house requires only minimum ventilation the system adjusts automatically and operates at the lowest level Lower noise levels Ventilation takes place only in those rooms that need it This limits noise levels to the absolute minimum In addition there is no need to design in provisions to reduce cross talk as each room has a dedicated duct which is connected directly into the plenum box The plenum box has integral sound absorbing material High energy saving for a low investment One of the main features of the Itho DemandFlow system is its remarkable contribution to energy saving This significant contribution is achieved through a combination of the use of a high efficiency direct current ventilation unit and by ventilating only those rooms that need it This considerably reduces heat loss when compared to whole dwelling mechanical ventilation systems Easy to install in any building concept even in the latter stages of the construction process The Itho DemandFlow system was developed in such a way that it can be installed in virtually all types of houses and apartments and in both new construction and
10. e cooker hood For extensive technical information please refer to the Itho High Efficiency Cooker Hoods brochure Pressure Sensitive Background Ventilators The natural supply of air for the system is provided by Pressure Sensitive Background Ventilators which are usually sited within or over the window frame These are placed in habitable rooms only and ensure that a positive air path is created throughout the dwelling towards the wet rooms The ventilators are fitted with pressure sensitive valves which open to let air in when the internal pressure drop is 1 or Pressure Sensitive Background Ventilators 2 Pa These valves add to comfort and reduce the incidence of noise and unwanted cold draughts as they are designed to resist the external pressure created by winds Therefore the user is less inclined to close the background ventilator For extensive technical information please refer to the product sheet provided by your supplier of Pressure Sensitive Background Ventilators Design of the system To comply with current government regulations all standards and legislation have to be taken into account in designing the ventilation system In particular the rules relating to ventilation capacities are highly important Ventilation calculation Regarding the ducts the designers have to calculate the amounts of air extracted from the bathroom toilet kitchen utility bedrooms and the living room In
11. eing problems The amount of carbon dioxide can be reduced through proper ventilation In developing the Itho DemandFlow system we also devoted a great deal of attention to ease of installation during the building process DemandFlow was developed to eliminate the drawbacks of ducting systems which involve lots of forks and branches Easy installation and maintenance The Itho DemandFlow ventilation system demonstrates that creating the best possible indoor climate does not mean a complicated installation The use of a combination of 80mm semi rigid aluminium and 104 x 54mm modular rigid plastic makes it easy to install The control valves are plug and play with automatic settings and need no adjustment As well as being easy to install the DemandFlow system is also extremely easy to look after with only simple maintenance required by the end user All the room extract grilles which are easily cleaned in a dishwasher are identical and interchangeable so after cleaning you need not worry about which grille goes where How the Itho DemandFlow system works The Itho DemandFlow system works on a basis of natural air supply and mechanical extraction in every room All rooms in the house therefore have one or more air extraction grille which is linked by means of a duct directly to the DemandFlow plenum box This plenum box is fitted with a number of sensors one CO sensor and one or two RH sensors for the bathroom
12. his can of course differ for each installation depending on the level of contamination In order to ensure fast and effective cleaning of ventilation ducts in the future the design must take into account a number of aspects the duct network system must run straight where possible In high residential houses the termination on the roof must be easy and safe to access 15 Energy efficient climate control systems that add to your comfort Itho proves that it can be done Wherever you are live or work chances are that you will be confronted with the products and services of Itho nearly every day This is because we develop climate control systems for all those places where people are active ranging from homes to offices and industrial units from shops to restaurants and from sports complexes to hotels and museums Whenever and wherever the residents users and owners of all these buildings ultimately have the same two wishes the greatest possible comfort and the lowest possible energy use These demands appear to be contradictory However here at Itho we have made it our goal to show that the two demands can be combined We possess the professionalism the drive and the innovative strength to actually deliver the evidence through figures test results and particularly through satisfied and enthusiastic clients and users Itho Ventilation Limited 10 Faraday Court First Avenue Centrum 100 Burton
13. ir volume per duct is 75m3 h at an airflow speed of 4m s Air extraction vents The grilles for the air outlet are fixed and cannot be adjusted The major advantage of this is that it is very easy for the user can to clean the grilles without disturbing the system due to an incorrect setting or replacing the grille at a place other than where it came from The amount of air that is extracted by the grille is determined by the amount of contamination CO in the relevant room Control panel CVE ECO 2 HP DDV roof termination Air Extract Grilles Bathroom The amount of air that is extracted from the bathroom is determined by the percentage of relative humidity RH in that room in combination with the temperature and or the level of contamination CO A maximum of two bathrooms can be connected to the system by this method HR High Efficiency Cooker Hood Connecting a motorised cooker hood to a central extract ventilation system is not permitted Itho has therefore developed the high efficiency cooker hood which is also suitable for the DemandFlow system The HR cooker hood is connected to the dedicated connection in the DemandFlow plenum box and the kitchen air extract grille moved to another The RFT control switch has a 10 HR High Efficiency Cooker Hood separate button for the cooker hood When switched on by the user the HR cooker hood extracts 125m3 h This ensures an optimum performance by th
14. l comply as Continuous Mechanical Extract as outlined in System 3 of Part F of the England and Wales Building Regulations The system has been surveyed at the Netherlands TNO report number 2008 D R0099 B S as being capable of maintaining an optimal indoor air guality Parts of the Itho DemandFlow system The plenum box with the control valves is the very heart of the DemandFlow system Here the amount of CO plus the relative air humidity is measured which results in an adjustment of the ventilation in relation to the values measured However the DemandFlow system contains more components each making an individual contribution to the maximum comfort offered by the DemandFlow system DemandFlow plenum box type DF P The DemandFlow plenum is the central unit of the system Here the control valves and the sensors for measuring the air guality in the different rooms can be found The air guality of the habitable rooms is measured by a CO sensor The air guality in the bathrooms a maximum of 2 is measured by an RH sensor This unigue measuring system has been developed by Itho and Plenum box with control valves patented under number 1026242 A maximum of 12 x 80mm ducts can be connected to the DemandFlow plenum and easily routed throughout the dwelling The connection to the extract unit is by a 125mm duct at the top of the plenum To ensure that the operation is ultra guiet the DemandFlow plenum i
15. plan Open plan Closed plan Bathroom toilet 1 1 1 1 1 1 Toilet 1 1 1 1 Kitchen 1 1 1 1 HR hood 1 1 1 1 Utility 1 1 1 1 Bathroom toilet 2 1 1 Living room 1 L 1 2 Bedroom 1 1 1 1 1 Bedroom 2 1 1 1 1 Bedroom 3 1 1 1 1 Bedroom 4 1 1 Total connections 6 8 9 11 12 1i Air movement within the dwelling In order to ensure that the ventilation system performs well there must be an unrestricted airpath within the house The inner doors must have undercuts of sufficient size in order to allow movement of the air For example Table 1 4 of Part F Ventilation England amp Wales states that there should be an undercut in all internal doors equivalent to an undercut of 10mm 12 As standard the Itho DemandFlow system has plenty of options to enable sufficient connections for most standard dwellings The system can easily be extended to accommodate larger houses with additional rooms by installing additional adapters max twelve adapters Notes A garage referred to as a storage area A storage area with a garage door is despite its name considered to be a garage Therefore such rooms cannot be connected to the Itho DemandFlow system Potential bedroom An undefined room is often referred to as a future optional bedroom This needs to be taken into account in the ventilation calculation as this could affect the total volume of air extraction and air Supply Possible future extensions adjustments Ex
16. r you have queries regarding a fan that is not running correctly or simply require your filters cleaning Itho is on hand to help you get what you need P In the unlikely event of an Itho system developing a fault within the specified two year warranty period Itho Ventilation Limited will take full control of the situation to ensure you experience minimal disruption A qualified engineer will arrange for a home visit to investigate the problem and repair or replace the product immediately if so required This after sales service is provided completely free of charge subject to the unit proving faulty during further testing For every product sold there will be a two year guarantee period which will come into force upon receipt of your new unit Throughout this period defective parts will be replaced free of charge subject to terms and conditions and as long as the relevant guidelines have been followed In order to ensure you get the most out of your chosen ventilation system Itho can provide you with an extensive maintenance programme including the routine cleaning and replacement of old filters without you having to lift a finger Itho DemandFlow Demand Controlled Ventilation on the basis of CO measurements In every room The indoor climate of our dwellings has to meet increasingly stringent reguirements Not only will the government be making higher demands the occupants too know exactly what the
17. rd and an integral RF receiver is fitted in the unit optional PCB The latter ensures that the central control switch controls the ventilation unit wirelessly For extensive technical information please refer to the CVE ECO 2 HP Brochure Roof Termination DDV In order to maximize the extraction return in a mechanical ventilation system you need to reduce the loss of pressure Therefore an important factor is what connection is used from the unit to the internal It is recommended that the extracted air is discharged by means of a DDV type connector To make optimum use of the extraction capacity of a mechanical ventilation system it is imperative to limit pressure loss Therefore when terminating through the roof it is important that the DDV Termination or similar is used to transport the maximum amount of air For extensive technical information please refer to the DDV product sheet Ducts The Itho DemandFlow system can be installed using the following types of ducting 80 mm semi rigid aluminium plus 9125 to connect both sides of CVE ECO 2 HP plastic flexible ducts from Muelink amp Grol 110mm x 54mm Rigid Modular Plastic By fitting these types of ducts without abrupt transitions the formation of turbulent areas is minimised or even prevented This reduces the loss of pressure and contamination is virtually non existent and also making the duct system easier to maintain The maximum a
18. s fitted with sound absorbing material The DemandFlow plenum is available in 12 or 8 connection units in either a floor wall model or a ceiling model For extensive technical information please refer to the DemandFlow Plenum Box product sheet Valves type DF K Every duct is connected to the DemandFlow plenum box by means of a click on system and every connection has its own valve type DF K to regulate the airflow The valve cables are connected to the controller by Ducting Types means of a connector For extensive technical information please refer to the DemandFlow Regulator and Accessories product sheet Central controller type DF R All control valves in the DemandFlow plenum are connected to the central control switch type DF R by means of a connector The control switch controls all valves and the ventilation unit and measures all sensors in the plenum The control switch is connected near the DemandFlow plenum and has a dedicated cord For extensive technical information please refer to the DemandFlow Regulator and Accessories product sheet Controller Er ra lm sl v m E J 2 B M i Jj B Wiis TLL EE al Operation The Itho DemandFlow system is fully automated However the level of ventilation can be controlled by means of wireless RF remote control The setting which is selected via this control applies to the entire system The
19. tensions and adjustments to the plans for the dwelling could have consequences for the total air balance calculation It is therefore imperative that new ventilation calculations be made for dwellings that are to be extended or altered in any way to assess the consequences Installing and starting up the system The DemandFlow system consists of many parts These parts are installed at different stages of the construction Installation in shell construction stage The plenum box and ducts are installed during the shell construction stage DemandFlow plenum box The DemandFlow plenum box can be installed on either the floor or the wall A separate ceiling model is available for high rise buildings Ducts For further information on the installation of the ducts please refer to the CAD plans showing the layouts Roof Termination For further information on installing the roof termination please refer to the DDV product sheet Installation at Fitting Out stage The following components are usually installed during the Fitting Out stage Ventilation unit type CVE ECO 2 HP The ventilation unit can be installed in any position and in various locations in the house such as attic airing cupboard storage area The unit has to be mounted on a wall with a mass of at least 200 kg m2 Please also refer to ISSO publication 62 The RF printed circuit board the means by which the controller wirelessl
20. times To this end a minimum space of 25 cm must be available at the front of the unit In that case the service module can still be removed from the unit if so required System Activation Once the unit is connected to the mains the system will set itself fully automatically The engineer need not adjust the grilles to achieve or balance the air volumes because depending on the CO level that has been measured the valve will auto adjust By pressing the IBS button the system will go into measuring mode and in this mode the air volumes in the wet rooms can be measured A delivery report can be prepared using these measuring values 13 system maintenance Proper maintenance is crucial to ensure that the Itho DemandFlow system can guarantee a long term comfortable and healthy indoor climate Proper maintenance ensures that your living comfort remains at the desired level the lifespan of the system is extended complaints can be dealt with quickly and efficiently costs can be budgeted better in the long term But what exactly is proper maintenance At Itho proper maintenance means periodic maintenance of the various ventilation parts setting out agreements with regard to the correct maintenance intervals as these differ for each component Maintenance of the ventilation unit In order to ensure a maximum performance in the long term the 14 g amp EN 7 a s
21. y controls the unit is installed in the ventilation unit Valves type DF K The valves are installed on the inside of the plenum box by means of a snap on system The valves are connected to the controller by means of a cable and a pluggable connector CO sensor type DF CO2 The CO sensor must be installed in its designated slot in the plenum box The sensor cable is connected to the controller by means of a connector RH sensor type DF RV Every connection to which a bathroom duct is connected max two must be equipped with its own RH sensor This RH sensor is installed in the valve s casing and connected to the controller by means of a cable and a connector Controller type DF R The controller is installed near the DemandFlow plenum box and has an electric cable All valves and sensors are connected to the controller Air Extract Grilles The extraction vents are installed in the duct fittings The extraction vents do not require setting Remote control unit type RFT ZEND DF Finally the control unit for the air quality settings timer and the high efficiency cooker hood is installed The unit has double sided tape on the back and can be mounted directly onto the wall Please note The remote control unit must not be mounted onto a metal surface on account of the RF signal Accessibility of the ventilation unit The ventilation unit and plenum must be accessible for maintenance at all
22. y want Today and looking to the future in order to meet these wishes and requirements dwellings are being insulated to higher and higher standards Unfortunately a higher level of insulation is often at the expense of the indoor climate as without proper ventilation moisture mould and dust mites have a free rein Consequentially the number of people suffering from breathing related health problems has increased considerably in recent years Looking ahead in order to create a comfortable and energy efficient indoor climate many dwellings will be fitted with a continuous mechanical ventilation system The Itho DemandFlow is such a system This is a demand controlled ventilation system which ensures the optimum air quality at maximum energy savings without the user having totake any action This brochure provides you with practical information regarding system design installation operation and maintenance of this unigue ventilation system Why the Itho DemandFlow system Maximum comfort through automatic ventilation on the basis of CO measurements DemandFlow is a fully automatic demand controlled ventilation system Every room is perfectly ventilated without the slightest effort being required of the occupant Air is extracted not only in all the wet rooms such as kitchens utilities bathrooms and toilets but also in all of the habitable rooms such as lounges
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