User manual - Heatrae Sadia
Contents
1. every room with an intake grille Optimum efficiency The heat exchange is highly efficient Independent tests at the Building Research Establishment show that upto 91 of the discharged warmth is reused within the home The heat loss is therefore only about 9 Notwithstanding the heat exchange which preheats fresh outside air the balanced ventilation system should not be seen as a heating system It is a ventilation system that contributes to the comfortable and healthy climate of your home Overflow protection The installation design assumes there is a10 mm space between the bottom of all internal doors outside door and the floor covering If the floor covering is thicker the doors should be shortened 4 Bypass and frost protection 100 Bypass The Itho heat recovery unit HRU ECO 4 is delivered as standard with a 100 bypass valve This valve is completely integrated in the unit and ensures that if required the fresh outside air flows directly to the air supply system instead of through the heat exchanger In this case there is no heat transfer between the warmer discharge air from the home and the colder intake air that is drawn into the home The fresh outside air is blown directly into the home This is definitely an advantage in the summer when the outside air is often cooler than the air within the home Frost protection The unit includes as standard frost protection This protection ensures that th2. on the environmental pollution from industry or traffic and also activities within the dwelling Replace the filters in this order Take the power cable out of the socket Pull the filter holders out of the unit Remove the old filter from the filter holder Clean the old filter or take the new one from the packaging filters can be cleaned with a vacuum cleaner Place the new filter in the filter holder put the power cable back in the socket Insect filter Once a year the insect filter must be cleaned The occupant can do this him herself First remove the power cable Remove the yellow cap at the top of the unit Now insert the nozzle of the vacuum cleaner into the hole and turn on the vacuum cleaner This way the vacuum cleaner removes any mosquitoes and suchlike present Replace the yellow cap and switch the unit on again ITHO hru eco 4 Removing the front of the unit You can order new filter sets for the HRU ECO 4 from Itho UK Ltd Condensate discharge The warm contaminated air passes along the colder fresh outside air in the heat exchanger of the heat recovery unit This can often result in condensate being formed therefore the HRU ECO 4 has an integral condensate discharge drain This drain has a PVC coupling with a 40 mm external diameter The installer connects this coupling of the heat recovery unit to the house sewerage grey water system or surface water drain pipe using a separate removab
3. the electricity costs are lower than that of any other ventilation Research has proven that fighting moisture in homes system The balanced ventilation system can however greatly contributes to the decrease of allergic reactions only function correctly when used and maintained ina of people with an airway disorder The correct use and responsible manner maintenance of your balanced ventilation system makes this possible 7 ITHO hru eco 4 3 Operation of the balanced ventilation system For illustration only The central unit of the balanced ventilation system in your home is the HRU ECO 4 heat recovery unit This unit has two motors One motor for air extraction and one for air supply Air is extracted from the kitchen bathrooms en suites utility rooms and toilets and if required froma storage room In larger properties more than one unit may have been installed Air extraction and air supply The contaminated air is filtered and fed through the heat exchanger before it is discharged outside The fresh outside air Is also filtered and fed through the heat exchanger before it is allowed into the home Two air flows are led alongside each other in the heat exchanger the air flows are therefore not intermingled Thus energy is saved as the heat of the discharged air is transferred to the fresh air intake The air flows through the ventilation ducts to the bedrooms living room and if required the hallway i e
4. Disassembly and assembly costs Faults which are in our opinion caused by incorrect treatment negligence or an accident Faults that have been caused by repairs or intended repairs by third parties without our authorisation Faults caused by irregular and or incompetent maintenance Modification to the appliance Incorrect installation of the appliance Incorrect power supply please refer to page 3 for correct power supply Should the unit become damaged or malfunction switch it off isolating it from the mains supply and contact Itho UK Ltd immediately Itho UK Ltd 10 Faraday Court First Avenue Burton on Trent DE14 2WX T 44 0 845 250 8090 F 44 0 845 250 8091 E info ditho co uk I www itho co uk 15 ITHO hru eco 4 The warranty Is only valid if the warranty card was filled in by your supplier on the date of installation and if it is sent along with any request for repair a receipt including the date of installation is also acceptable This warranty card should be filled in on the installation date and be kept by the user Type Serial number Voltage Installation date Supplier seal 9 Manufacturer s statement EC declaration of conformity According to Low Voltage Directive 2006 95 EC and the EMC Directive 2004 108 EC Declaration of Incorporation According to Annex IIB of the Machinery Directive 2006 42 EC Itho Images BV Soevereinstraat 8 4879 NN Etten Leu
5. HRU ECO 4 user manual lt gt Climate for life Safety WARNING Do not use this appliance for functions other than those described in the booklet After removing the appliance from its packaging ensure that it is complete and undamaged If in doubt contact Itho UK Ltd Do not leave the packaging within reach of children or the infirm Certain fundamental rules must be observed when using any electrical appliance including a Never touch appliances with wet or damp hands b Never touch appliances while barefoot c Do not allow children to use the appliance without supervision d Supervise infirm persons when using the appliance Store the appliance out of the reach of children and infirm persons If you decide to disconnect it from the power supply and no longer use it Do not operate the appliance in the presence of inflammable substances or vapours alcohols insecticides petrol etc CAUTION The following general instructions are important Follow the safety instructions to prevent fan damage and personal injuries Maintenance instructions must be followed to prevent damage and or excessive wear and tear The specifications in this manual may not be modified The unit may not be modified The motor module is only suitable for a 230 V 50 Hz a c system fitted with a 3 amp fuse Do not expose the appliance to the weather rain sun etc Do not place objects on top of the appliance
6. II of the Machinery Directive 2006 42 EC We Name of installer Full address and country Hereby declare under our own responsibility to have installed the following product with type designation Heat Recovery Ventilation Type HRU ECO 4 to which this declaration refers We declare the entire installation being a single machine in conformity with the Machinery Directive Place Date Name Position Signature Company Stamp 11 Troubleshooting Problem Fans do not turn Intake fan does not turn Discharge fan does not turn Low volume of intake air Low volume of discharge air Condensation leakage Unpleasant smell Noise No power supply Little or no air is coming through the intake grilles No suction through the discharge grilles Low volume of air through intake grilles Low volume of air to discharge grilles Drops of water on bottom of the unit Near the unit Near intake grilles Swishing sound from the air flow Rattling noise Gurgling noise If the problem persists report the details to the installer Troubleshooting Mains voltage failure Wall socket power supply failure Check the distribution board in the fuse cabinet meter cupboard Check whether the 230 Volt plug is placed correctly in the unit Frost protection is activated Clean the filters Clean the filters Clean the filters Exchange
7. Regularly inspect the appliance for visible defects If any faults are found contact Itho UK Ltd immediately The appliance must only be installed by a professionally qualified person Ensure that the electrical system to which the appliance is connected complies with applicable standards Use a multi polar switch with a minimum contact gap of 3 mm to Install the appliance Switch off the appliance at the main switch a If the appliance does not function correctly b Before cleaning the outside of the appliance c If the appliance is not to be used for any length of time Be careful to avoid damaging the electric circuit Do not use the appliance to control activation of water heaters room heaters etc nor should it discharge into the flues of any such appliances Ensure that the appliance discharges into a single duct dedicated to this product which is routed to the outside The air to be extracted from the dwelling must be clean i e free of grease soot chemical and corrosive agents explosive or flammable mixtures Keep the appliance intake and outlet grilles free to ensure optimum airflow at all times ITHO hru eco 4 Safety A Electronic components The HRU ECO 4 contains parts which may be live Consult a professionally qualified installer in the event of an alleged fault All repairs and maintenance work should be carried out by a professionally qualified installer Maintenance The ventila
8. abel Our aim is to develop climate systems that respect the world around us Your wishes become our inspiration and Itho works constantly to achieve this Climate for life Climate for life d3 TTZ0 Z8T0 S0Z
9. button The timer automatically switches the ventilation unit to low mode after the time has elapsed aa E RFT operation switch The length of time set for the timer is determined by the user Press the timer button once to set the ventilation unit to high mode for 10 minutes Press the timer button twice to set the ventilation unit to high mode for 20 minutes Press the timer button three times to set the ventilation unit to high mode for 30 minutes If the operation switch is used by choosing mode H or while the timer is in operation the timer is switched off and the ventilation unit operates in the chosen mode 11 ITHO hru eco 4 Recommended hours of operation A new home contains approximately 2000 liters of moisture in its floors and walls This moisture has to be removed from the home It is recommend that a new home be ventilated more intensively during the first few months For example by setting the ventilation system to medium mode instead of low mode during the day time The recommended hours of operation are provided in the list below To guarantee a healthy environment in your home we recommend the following daily hours of operation for the ventilation system At most 14 hours in low mode At least 8 hours in medium mode At least 2 hours in high mode 7 Maintenance Airflow Valve Grilles The grilles have to be cleaned regularly to ensure the constant and reliable operatio
10. e unit does not freeze during the winter The frost protection consists of a unique frost valve integrated at the top of the unit The frost protection is fully automatic Frost protection operation In the heat recovery unit the fresh colder outside air is partly heated by the air discharged from the home The exchange of heat takes place when both air flows are led through the heat exchanger The discharged air may be cooled to a temperature very near freezing by the cold air entering the unit from outside In this case the unit will regularly open the frost valve and take in warm air from the home This warm air is mixed with the cold air that is taken in from outside The temperature of the intake air is therefore higher and the discharge air in the heat exchanger will also be safely above freezing The unit will thus not freeze Balancing the air flow In a balanced ventilation system the volume of air coming from outside equals the amount of air discharged from the home The outside air suction fan therefore turns faster when the frost protection is triggered Thus the volume of air coming from outside remains the same as the amount of air discharged from the home The total volume of air intake increases proportionally with the volume of air taken in from the home by the frost valve Opening the frost valve is not sufficient when the outside temperature is even lower The intake fan will turn more slowly and after some time
11. ion and intake grilles all have their own fixed positions and settings Extraction grilles Supply grilles MLV The setting of the grilles should not be changed Changing the settings may disrupt the operation of the complete ventilation system Grilles and valves should not be switched with each other 6 System control The HRU ECO 4 Combiflow system has been designed to Hard wired 3 position switch recover as much heat as possible and to function well using as little energy as possible The Itho HRU ECO 4 can be operated using a radio frequency operation switch Radio frequency RFT operation switch The RFT radio frequency operation switch transmitter can be used as a 3 position mode switch with timer feature for the HRU ECO 4 ventilation unit This operation switch can be used to set the ventilation unit to one of the three ventilation modes capacities The modes are The HRU ECO 4 can be operated using the 3 position switch Mode 1 Low mode HRS 3 Step one is used at night step two during the Mode 2 Medium mode day when there are people at home and step three when Mode 3 High mode cooking showering or bathing The low mode is a continuous background setting the medium mode can be used for improved comfort and the high mode when cooking showering or bathing The switch also has a timer The ventilation unit can be switched to high mode for a predetermined time by pressing the timer
12. le rubber coupling fill opening cover with rubber ring waterlevel 50mm sifon An air trap with a minimum level difference of 250 mm Is added in this connection Above the air trap a branch pipe is mounted at a 45 degree angle This branch pipe has a cover with a rubber ring This can be opened to easily top up the water trap This is required to maintain or restore the water trap Fixed coupling with fill opening If the air trap runs dry the air from the house sewerage will be able to enter through the unit and be discharged outside by the discharge ventilator No smell will be caused but the discharge capacity will decrease We recommend refilling the air trap quarterly The water will evaporate more quickly in summer Smells near the coupling with the condensation discharge hose When the air trap runs dry a direct connection with the house sewerage is created This creates smells Refill the air trap using the fill opening to solve the problem Effective discharge of cooking and baking vapours in the kitchen is guaranteed by the extractor The extractor is connected to the balanced ventilation system It is preferable to have a registered installer carry out the cleaning fill opening condensation discharge hose 8 Warranty conditions The Itho HRU ECO 4 warranty is valid for 3 years after production date The production date is indicated on the type plate The warranty does not apply to
13. n of the ventilation system and for your own health Make sure that the setting of the system air flow is not changed when you clean the grilles The valve could be turned by accident and this would mean that the opening becomes larger or smaller Each grille should be placed back in the same duct opening in the same room from which it was removed Filters The heat recovery unit and the extractor have filters The filters prevent the contamination of the ventilation guarantee years of correct operation and ensure that clean air is blown into your home This is very important for your health Check and clean the filters regularly and replace the filters when necessary This ensures the home is ventilated sufficiently at all times The filters can be cleaned manually by washing them Cleaning grilles without filters Grilles without filters can be taken out of the duct opening twist to the left Before you clean the grille in warm water with detergent remove the foam plastic ring After cleaning the grille can be replaced in the duct opening with a twist to the right Always make sure you replace a grille in the same room In addition make sure NOT to alter the setting of the grille The filters in the unit For the user maintenance is limited to cleaning the filters In order to safeguard the proper functioning of the unit the filters will have to be cleaned or replaced on an annual basis This may differ per situation depending
14. r The Netherlands hereby declare under our sole responsibility that the following products Heat Recovery Ventilation System Type HRU ECO 4 is in conformity with the following EC Council Directives Low Voltage Directive 2006 95 EC EMC Directive 2004 108 EC and Applied Harmonised Standards EN60730 1 EN61000 3 2 EN61000 6 1 EN61000 6 3 RoHs Weee and must be regarded as partly completed machinery and is intended to be incorporated in a machine or to be assembled with other machines into a single machine or system to which the Machinery Directive 2006 42 EC applies We want to alert you that the product is designed to be incorporated in a ventilation system and that the partly completed machine must not be put into service until the final machinery into which it is to be incorporated is in conformity with the provisions of Machinery Directive 2006 42 EC for which the most important instructions can be found in the manual We explicitly state that the CE marking on the product only refers to the Low Voltage Directive 2006 95 EC and the EMC Directive 2004 108 EC After the submission of a declaration according to Annex IIA of the Machinery Directive for the entire installation the CE marking on the device also refers to the Machinery Directive 2006 42 EC Etten Leur July 2010 J Braspenning Director ITHO hru eco 4 10 EU Declaration of Conformity EC declaration of conformity According to Annex
15. r is partially frozen shut frost protection failure Clean the filters Exchanger is partially frozen shut frost protection failure Condensation discharge is clogged Leaking condensation discharge Air trap under the unit is dry Distance between outside air suction and ventilation outlet is too small The duct system is creating too much resistance Valves are not opened sufficiently Valves do not fit the duct properly Too much resistance due to contamination of filters or exchanger frozen Fan does not run true or is faulty The air trap is dry Condensation discharge is not sufficiently deep in the air trap ITHO hru eco 4 Itho strives at all times to offer people an enjoyable living and working environment with its innovative solutions in climate systems These are solutions for temperature clean air and hot water in the domestic environment in which people and environment go Itho UK Ltd 10 Faraday Court First Avenue Burton on Trent DE14 2WX T 44 0 845 250 8090 F 44 0 845 250 8091 E info ditho co uk www itho co uk Climate for life harmoniously together We want a more comfortable and healthier living environment but at the same time we aim for lower energy consumption With sustainable technologies and innovations Itho proves that seemingly opposite objectives can be combined with very little effort You can recognise these solutions by the Itho Living Blue l
16. the discharge ventilator will turn faster The air therefore remains above freezing This results in a temporary imbalance of the ventilation the volume of air coming from outside is no longer equal to the amount of air discharged from the home When the outside temperature increases the unit automatically resets the fans to the initial values The ventilation is thus once again balanced Electronic components The electronic components are important parts of the unit The electronic components control the operation of the unit when you set the mode switch The motor is set to the speed that ensures the desired ventilation The electronic components consist of a basic printed circuit board and an optional radio frequency module This can be used to extend the ventilation unit with radio frequency operation The user should not touch the electronic components These components may be live ITHO hru eco 4 5 Grilles 5 1 Grilles The volume of air that has to be extracted is specified in the Building Regulations The volume of air flowing into the home has to be in balance with the extracted volume The volume of air extracted from and supplied to the home should in other words be equal The minimum air volume per room is also determined by the Building Regulations The set volume of air is determined based on achieving an optimum home climate without wasting energy The air intake and discharge per room are not equal The extract
17. ties Bathrooms and En suites needs to be inspected every 3 years and cleaned every 6 years Cleaning of the grille and ducting can be carried out with a damp cloth Table of contents 1 Why use balanced ventilation 6 7 Maintenance 13 2 The correct use of your ventilation 8 Warranty conditions 15 system 7 9 Manufacturer s statement 17 3 Operation of the balanced ventilation system 8 10 EU Declaration of Conformity 18 4 Bypass and frost protection 9 11 Troubleshooting 19 5 Grilles 10 Subject to changes without notice 6 System control 11 No rights can be derived from this user manual 5 ITHO hru eco 4 1 Why use balanced ventilation Ventilation is necessary In the past people built houses which were not air tight which leaked air for example at the connection point of the wall and the floor or roof Cracks were always visible around windows and doors All these openings ensured that large volumes of air moved in and out of the buildings When the wind was blowing the complete air content of the home was refreshed three to four times an hour This ensured very good ventilation of the home but a lot of energy was lost Construction methods have changed Floors walls and roofs are when possible constructed with a layer of insulation The insulation ensures that there are nearly no cracks and the air tightness is increased It is a misconception to think that there is still enough ventilation in a home
18. tion unit should be inspected regularly for contamination Electrically discharge the unit before carrying out any work on it First isolate the unit from the mains supply and make sure that the unit is not re connected or the supply plug is not reinserted in the socket by yourself or anyone else before you have completed the work Rotating parts The HRU ECO 4 contains rotating mechanical parts These parts will keep on turning for a few seconds after disconnecting the unit from the supply For this reason wait at least 10 seconds after isolating the product before opening the unit The fan will not be moving after these 10 seconds have elapsed Sharp edges of the ducts The valves and grilles in your home should also be cleaned regularly These can be removed from the wall or ceiling Beware of protruding duct sections These can be very sharp Replacing the valves and grilles The valves should always be placed back in their original locations Do not turn the valve during the cleaning process or make sure to mark the setting before cleaning the valve If the valves are switched or set differently the ventilation volumes will no longer be correct and the ventilation system will not work optimally The bathroom may then remain humid for too long your toilet may be very cool or your kitchen may smell mouldy Maintenance of Ducting It is our recommendation that the ducting connected to the Extract Terminals located in Kitchens Utili
19. without some type of ventilation system Ventilation is absolutely necessary in an air tight home to prevent problems related to humidity mould and the health of the residents Moisture content of the home Incorrect use of the ventilation system by the resident in combination with today s well insulated homes gives humidity an open field The moisture content in the homes increases and can cause health humidity and mould problems family of four persons produces 14 to 20 litres of moisture per day just by breathing sleeping cooking washing dishwashing bathing watering plants etc Many products such as textile carpets parquet newspapers and cigarettes contain substances that harm the health of the residents All the moisture such as water vapour and aromatic substances should be removed from the homes 2 Thecorrect use of your ventilation system Ventilation requires energy The correct use of the Some health information ventilation system can limit energy loss as much as 5 to 20 of people have an airway disorder possible The number of house dust mite has increased a hundredfold in the past 25 years Your home has a Itho UK Ltd supplied Itho balanced The number of people suffering from Chronic ventilation system with heat recovery This system can Non Specific Lung Disease has doubled in the last contribute extensively to a healthy interior climate and an 15 years optimum comfort level Another advantage Is that
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