User Instructions
Contents
1. Front View Top View 160 Rear i r ln 475 1 ee x 11 to H En M T z a 710 A Fron Service Space Front View Top View Rear a 0 D Ne i EN F n UE Front d 1 A clear space of 600mm should be provided in front of the unit to allow Clearance for condensate drain for servicing MPo dimensions are mm Page 8 of 18 9 Operating Instructions Continuous ventilation is necessary to ensure a healthy indoor air quality and to maintain the building fabric in good condition at all times Even with prolonged absence of residents ie holiday it is not recommended to switch off the ventilation unit since indoor contaminants are still being produced and entering the air causing the air to get stuffy and a high possibility of moisture damage due to excess humidity during the heating season Do not turn off the device This is required for protection against moisture in accordance with DIN 1946 Part6 and Building Regulations 2010 Approved Document Part F The ventilation unit works properly when the flow rates are adjusted in accordance with the above regulations to ensure optimum ventilation ofthe house Default Factory Settings2. Parameters Settings Low Speed Supply Extract 30 Medium Speed Supply Extract 55 5 5 High Speed Supply Extract 80 8V Boost Speed Supply Extract 10096 10V Manual Boost Overrun 15 min On demand Boost Delay 1 min Filter Timer 3000 hours Requested Indoor Temperature 22 C Indoor Temperature Selection Extract Air Temperature Defrost Temperature 3 C Defrost Cycle 15 min Pre heater Temperature 0 Note The low high speed levels can be adjusted by manual potentiometers The medium Speed has been set in the controller s software by the manufacturer and is set as the average value ofthe manually adjusted low and high speed levels These values are factory set and can only be adjusted via the digital controller BV400 SE Page 9 of 18 9 1 Basic Control Settings ON OFF Press for3 seconds Boost Press to increase fan speed Press to decrease fan speed Press toactivate the manual boost function Child Proof Protection To activate this function press Qa simultaneously for 3 seconds When child proof protection is active keypad is locked and buttons do not work To deactivate this function press Qaa for 3 seconds 9 2 Fan Speed Adjustment The installer is responsible for setting the required air volume rates for every room in compliance with the Domestic Ventilation Compliance Guide 2010 The Duplexvent BV4
3. Volt free Switched live connection connection for boost for boost Summer Bypass The Duplexvent BV400 unit is fitted with a bypass facility as standard This can be used for keeping indoor airtemperature at a comfortable level If the house indoor air temperature is hotter than the unit temperature sensor setting factory set at 22 C with the incoming air temperature lower than the indoor air temperature the bypass damper will open This will tend to lower the indoor air temperature until it reaches the set temperature level 22 C Page 11 of 18 At other times the unit will recover heat as long as the related dip switch the control box is activated Switch 1 in the control box on top of the EH The bypass function is activated from unit tH This can be switched off in the heating season to have heat recovery at all times de zs BH BASH Mas Frost Protection In case of very low outside temperatures the supply fan will reduce its speed automatically for a short period to protectthe heat exchanger from freezing This function is active when the outdoor air temperature falls below 3 C For uninterrupted air supply and extract volumes in regions with low outside temperatures lt 5 for more than 24 hours an in line electric pre heater see section 11 can be used in the supply air strea
4. Air extract rates are too low v Activate the boost speed while showering or bathing Page 17 of 18 13 Warranty Applicable to units installed and used in the United Kingdom Airflow guarantees the Duplexvent BV400 units for 3 YEARS from date of purchase against faulty material or workmanship be aware of the latest updates of Duplexvent BV400 please register your product at www airflow com The warranty only covers the unit not the re installation of it if required In the event of any defective parts being found Airflow Developments Ltd reserve the right to repair or at our discretion replace without charge provided that the unit 1 Has been installed and used in accordance with the fitting and wiring instructions supplied with each unit 2 Has not been connected to an unsuitable electrical supply 3 Has not been subjected to misuse neglect or damage 4 Has not been modified or repaired by any person not authorised by Airflow Developments Ltd 5 Has been installed in accordance with latest Building Regulations and IEEE wiring regulations 6 Has been installed by a competent person who is qualified to do so Airflow Developments shall not be liable for any loss injury or other consequential damage in the event of a failure of the equipment or arising from or in connection with the equipment excepting only that nothing in this condition shall be construed as to exclude or restrict liability for negligen
5. s Air Volume at 100 Pa 425 m hr 118 V s Thermal Efficiency ref SAP Appendix Q 93 Specific Fan Power ref SAP Appendix Q 0 45 W I s Power Supply 230V 1PH 50Hz Maximum Power Input 180 W Maximum Current 1 54 Amp Filter Class conforming to EN779 G4 F7 optional Duct Connection 160 mm Condensate Discharge 22 mm Protection Class IP44 Operating Temperature 10 C to 40 C Operating Humidity 0 to 80 RH Dimensions W x H x D 710 x 725 x 630 mm Weight 41 kg Page 6 of 18 6 Performance Curve 500 450 400 E 350 Po Low Speed 3 300 d I sores Medium Speed D X High Speed 2 250 Boost 200 X 150 MX Se k 100 M y R E 50 HR S x iA a 0 E 0 50 100 150 200 250 300 350 400 450 500 550 Air Volume m h 7 Sound Curve dB A 60 mo i LII RS 1 Low Speed 40 expo Medium Speed 4 High Speed Boost 30 NR10 3 NRO 63 125 250 500 1000 2000 4000 8000 Central Frequency Cycle per Second Page 7 of 18 Octave Sound Pressure Level dB Overall A Scale 8 Dimensions
6. 00 unit has 3 speed control switch which is supplied as standard The low and high speed levels can be adjusted by manual potentiometers for commissioning purposes This can be done through the control box which is located on top of the unit The medium speed has been set in the controller s software by the manufacturer and is set as the average value of the manually adjusted low and high speed levels Page 10 of 18 9 3 Other Control Functions Boost Function This function is used when large amounts of exhaust and fresh air are required There are 2 different boostfunctions Manual and On demand a The Manual Boost function is activated after pressing the Boost button on the control panel va Once activated the unitruns atthe boostspeed for 15 minutes Boost Note During the manual boost operation the Low Medium and High speed LED lights flash atthe same time b The On demand Boostfunction is activated via volt free or switched live contact see section 11 on the control board When activated the unit starts running at the High speed until itis deactivated and goes back to the speed level that was set before the boost operation 516 OK FAN RA MODBUS FAN OA BMS OK BMS FAULT BMS RUN MODBUS USER FIRE
7. DUPLEXVENT MODEL BV400 Part No 90000312 m Mechanical Ventilation with Heat Recovery User and Maintenance Manual PLEASE RETAIN THESE INSTRUCTIONS WITH THE PRODUCT AIRFLOW 2 18 1 pendit EAE 4 2 Why Ventilate oce tee itd et axe 4 3 How Does A Ventilation System With Heat Recovery 5 4 Components 5 a hav setae S 6 5 Technical Da ta iride LUE 6 6 Performance 7 7 Sound 7 8 Dimensions 8 9 Operating 5 5 9 9 1 Basic Control Settings 10 9 2 Fan Speed AdjustMent cccccceeecceceeeeeceeeeeeneeeeeeeeeeeesneeeeseneeeeeeeeeetees 10 9 3 Other Control 11 10 Maintenance 5 5 14 10 1 Filter 14 10 2 Heat Exchanger 15 10 3 Other Maintenance 16 11 ACCESSONIOS 222 RT M 16 12 Troubleshooting si eiecti ttr oh 17 13 Warranty 2 E 18 3 18 1 Introdu
8. ber Product Description 90000336 Digital control display 90000322 G4 filter pack 2 filters 90000323 F7 filter pack 2 filters 90000228 Boost switch 1 way 90000324 can be E ee 9041570 Room humidistat 51969702 PIR Motion sensor 90000325 Built in humidity sensor 90000326 Pressure sensors for filter monitoring Mechanical ventilation units require good quality ducting and a high standard of installation To ensure the best results we recommend the innovative AIRFLEX PRO semi rigid ducting system 12 Troubleshooting Diagnosing a Problem In the eventof a problem always troubleshootthe unit according to LED fault There are two types of warnings displayed on the control switch a Red LED flashes on off Filter Maintenance Alert b Red LED flashes continuously Failure of Components Fans Sensors Heaters If no indications are displayed then troubleshoot the problem according to the fault symptom as described the table below Failure Reason Solution Outdoor air coming into the dwelling is cold Air cools down in the attic ducts The heat exchanger is frozen which is why extract air cannot heat the incoming air The extract fan is not running The extract air filter or the heat exchanger is clogged Check the duct insulation v If the heat exchanger is frozen contact your supplier installer to reduce the set point of the frost protection facility Contact your
9. ce All goods are sold according to Airflow Developments Limited s Standard Condition of Sale which is available on request In the interest of continuous development Airflow Developments Limited continuously strive to improve their products and reserve the right to change specifications and prices without prior notice This warranty does not in any way affect any statutory or other consumer rights All information believed correct at time of going to press Airflow Ventilation Solutions Call 01494 560 800 AIRFLOW Aidelle House Lancaster Road Copyright 2013 Airflow Developments Ltd E mail info airflow com Telephone 44 0 1494 525252 AT Business Park Facsimile 44 0 1494 461073 Buckinghamshire Hr Airfiow Developments Limited Arflow Developments Limited reserve the right in the wterests of continuous development par speofications without airflow com REVO1 15 07 2013 Page 18 of 18 SEES
10. ction Dear Customer Thank you for choosing a Duplexvent Mechanical Ventilation with Heat Recovery MVHR unit The balanced heat recovery ventilation unit Duplexvent BV400 has a state of the art design and must be used according to the planning calculations and operating instructions Please read the information in the user manual carefully before you start using your equipment In this document you will find instructions for usage and maintenance which are necessary to operate your unit properly and improve the longevity of your ventilation unit This manual is intended for qualified installers and users of this unit If you have any further questions please contact Airflow Developments Limited Aidelle House Lancaster Road Cressex Business Park High Wycombe Buckinghamshire HP12 3QP United Kingdom Tel Int 44 UK 0 1494 560800 Fax Int 44 UK 0 1494 461073 E mail info airflow com Visit www airflow com Please keep this manual in a place where it is accessible at all times In case of loss of this document please refer to the relevant product page on our website The manufacturer is not liable for damage caused by unprofessional installation and operation thatis notin compliance with this manual Failure to follow these instructions may cause the loss of product warranty Electrical Connection Caution Before opening the door ofthe unitfor cleaning filter replacement or Danger general maintenance always make sure
11. hanger will be damaged if the unit runs without the filters WARNING THE FAN AND ANCILLARY CONTROL EQUIPMENT MUST BE ISOLATED FROM THE POWER SUPPLY DURING MAINTENANCE Danger Electric Shock risk 10 1 Filter Maintenance In the Duplexvent BV400 both supply and exhaust air streams are filtered through G4 class course filters The filters should always be keptin place when the ventilation unitis in operation To prevent the contamination of this ventilation system to guarantee years of trouble free operation and ensure that clean air is supplied into your home the filters must be periodically cleaned or replaced depending on contamination ofthe outdoor air Step 1 Slide the service cover to the left open it and remove the filters Slide the Open the Service Cover Left Service Cover Remove the Filters Step 2 Use a vacuum cleaner to clean the dust from the air filter If necessary use warm water with detergent to remove the persistent dirt Leave the filters to dry before placing them back in the unit Vacuum Cleaner Filter Page 14 of 18 Note The G4 filters should be replaced once every six months or after a maximum of two cleaning cycles If an optional F7 filter is used please replace these filters after every maintenance cycle replacement filters are available on www airflow com see page 15 for part numbers Step 3 Place the filters in the filter slots close the service cover and slide it to
12. m from the outside to the dwelling to avoid the heat exchanger freezing The heater automatically switches on when the outdoor air temperature falls below 0 C 1 A Once installed the pre heater control must be activated from dip switch 2 in the control box on top of the unit Filter Maintenance Indicator The unit is fitted with a maintenance reminder facility which has been pre set to 4 months When this time interval is reached the red warning light on the control panel flashes for filter maintenance indication After cleaning replacing the filters press the buttons simultaneously for 3 seconds to resetthe timer Boost Alternatively optional pressure sensors see section 11 can be used to measure the actual pressure difference between supply and exhaust air hence monitor the filter status The red warning light on the control panel flashes as soon asthe filters need to be maintained After cleaning replacing the filters the red warning light goes off automatically Page 12 of 18 Electric Post heater For most of the year heat recovered from the extracted air is sufficient to warm the fresh incoming air to the required temperature If the heat gain from the extract air is not sufficient an optional post heater see section 11 can be used to increase the indoor air temperature The heater is switched on off automatically based on the extract air temperature in order to maintain the requested indoor air tem
13. perature factory set at 22 C Once installed the post heater control must be activated from the dip switch 3 in ds the control box on top of the unit 0 Fire Switch This volt free contact can be used to shut down the unit in case of a fire or any other emergency blo OK FAN RA FAN OA BMS OK BMS FAULT BMS RUN BOOST BOOST AC A volt free switch should be connected to the corresponding socket to activate this function MODBUS Control MODBUS Monitor The MODBUS via RS485 BMS control function helps to control the functions from a central automation system For more information please contact ourtechnical support team The MODBUS BMS monitoring enables the user to display the operating status of the unit and receive faultsignals as different voltage outputs in an unexpected failure of the unit This function is activated from dip switch 4 the control box on top ofthe unit i Page 13 of 18 10 Maintenance Instructions Heat recovery units by their very nature require regular maintenance The Duplexvent BV400 has been designed to facilitate easy access to enable maintenance to be carried out Note The heat exc
14. supplier installer Check that the filters and the heat exchanger are clean The unit has been Switched off unexpectedly Mains voltage failure Consult a qualified electrician to check mains power supply to units The unit makes a lot of noise Gurgling noise Condensate trap water level is too low Condensate pipe is not completely in the trap Condensate pipe or condensate trap is blocked or frozen Rumbling Rattling noise Fan motor fault Fill the condensate trap with water v Push the pipe deeper into the trap Check the condensate drain and clean it if necessary Contact your supplier installer Water leakage near the unit Condensate trap is clogged or frozen Condensate pipe has come loose Check the condensate drain and clean it if necessary Unpleasant smell near the unit Condensate trap U bend below the unit is empty The condensate pipe is not completely in the trap The condensate pipe or condensate trap is blocked or frozen Fill the condensate trap with water Push the pipe deeper into the trap Check the condensate drain and clean it if necessary Unpleasant cooking smell in the house Air extract rates are too low The filters are polluted blocked The grilles are dirty Activate the boost speed when cooking v Replace the filters y Clean all grilles Too much condensation in the bathroom
15. t room areas allow a constant air volume to be extracted This is backed up by a boost facility removing stale air at a higher rate for a short period of time Supply Air Fresh oxygenated air from outside passes through the filter and heat exchanger before being supplied into bedrooms living and dining rooms etc This fresh air is drawn into the various wet rooms collecting pollutants on its way such as moisture odours allergens and volatile organic components The air is also heated as it passes from room to room using the statutory gap at the bottom of internal doors when closed The now stale polluted air is then drawn out of wet rooms through the heat recovery unit to outside completing the cycle Extracted Air TS UM ec bathroom en suite toilet Stale Air to Outside utility and kitchen 4 Incoming Fresh Air Fresh Air from Outside lt bedroom living room and dining room 7 5 Heat Recovery Unit Page 5 of 18 4 Components S Contro Box f Extract amp Supply Air Filters Q By pass Module Heat Exchanger 4 Metal Casing d Q Extract amp Supply Air Fans 5 Technical Data EC Fan Speed settings selected on installation Low amp High speed levels are 100 adjustable Low Medium High Boost Typical Ventilation Settings at 100 Pa 75 m lhr 200 m hr 350 m hr 425 m hr Rated Voltage 3 0V 55V 8 0 V 10 0 V Maximum Air Volume at 0 Pa 475 m hr 132 I
16. that the equipmentis anger isolated or disconnected from the power supply 2 Why Ventilate With ever increasing energy costs the need to conserve heat and power is leading to higher levels of insulation and air tightness in residential dwellings and commercial buildings which inevitably leads to poor indoor air quality In a healthy home thousands of litres of fresh air are needed every day to replace the moist air generated by individuals and also through cooking washing and bathing please refer to UK Building Regulations Approved Document F for guidance Page 4 of 18 Ventilation is necessary to provide healthy and comfortable internal environment for a building s occupants The main task of ventilation is to remove polluted indoor air from a building andreplace it with fresh outdoor air 3 How Does A Ventilation System With Heat Recovery Work Heat Recovery is a process of continuously heating incoming fresh air by using the heat energy from outgoing stale warm air and transferring a percentage of itto the incoming fresh air This is accomplished by passing the incoming and outgoing air through a highly efficient heat exchanger At no time do the airstreams mix as the heat radiates through plates of the heat exchanger so no odour issues are possible Extract Air Stale air is contaminated with humidity and odours which are extracted from the kitchen bathroom toilet en suite and utility rooms Extraction vents in we
17. the right to secure 10 2 Heat Exchanger Maintenance Approximately every two years it is recommended that the heat exchanger is checked for contamination This time scale may vary depending on the surroundings of the property Inspection should be carried out when checking the filters WARNING THE FAN AND ANCILLARY CONTROL EQUIPMENT MUST BE ISOLATED AN FROM THE POWER SUPPLY DURING MAINTENANCE Danger Electric Shock risk Step 1 Remove the front cover plate and the bypass module by unscrewing the screws Caution The fins of the heat exchanger are very thin and can easily be damaged Page 15 of 18 Step 3 Remove the dirt from the outside walls of the heat exchanger with a vacuum cleaner Vacuum Cleaner Caution Never use water or any other cleaning materials 10 3 Other Maintenance Procedures During maintenance work in autumn please check the condensate drain is secure and not clogged This can be tested by pouring some water into the drain pan and checking the water coming out of the unit through the condensate drain Clean the drain if necessary Also ensure thatthe insulation of the condensate pipe is adequate Check that the unit and all wall mount fastenings are sufficiently tight and have not become loose Re tighten if necessary 11 Accessories Thefollowing accessories for this unit can be ordered from Airflow Developments Ltd Part Num
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