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TF6400_A

Aereco S.A.

3.2.4. DUCT CONNECTIONS TO THE DXA UNIT

The connections to the DXA Unit are all in Ø160 mm. Labels on the unit identify the 4 ducts to be
connected (fresh air, used air, supply air, exhaust air).

Outdoor fresh air and used air ducts must

be insulated.

Fresh air

(outdoor to indoor)

Used air

(indoor to outdoor)

Fresh air supply

(outdoor to indoor)

Exhaust air

(indoor to outdoor)

DXA top view

Each supply unit can be connected to a distribution box by a Ø100 mm for rigid duct or

by a Ø75 mm duct for semi-rigid duct. Each semi-rigid duct cannot afford an airflow

bigger than 30 m

/h.

Ø100 or Ø75 mm

Ø100 mm or Ø125 mm

Ø160 mm

Ø160 + 50 mm insulation

Supply:

rigid or semi-rigid duct

+ flexible connection to the unit (1 m max)
(avoid noise in the room)

Exhaust air:

rigid (avoid pressure drop)

or semi-rigid duct

Air intake and air outlet:

insulated rigid

duct (avoid pressure drop and condensation)

Duct diameters and recommendation concerning the type of ducts

SDC100

SDC

100

SDC100

BXC

compensation

to exhaust air outlet

to fresh air inlet

Содержание DXA 230 PREMIUM

Страница 1: ...INSTALLATION AND MAINTENANCE INSTRUCTION ENGLISH VERSION dx system DXA 230 PREMIUM Heat recovery unit with demand control for cupboard installation TF6400_A Aereco S A ...

Страница 2: ...7 4 1 Electrical connection on the DXA Unit 18 4 2 Electrical connection of the defrosting 19 4 3 Electrical connection of the condensate pump optional 19 5 Starting and settings of the DXA 20 6 Maintenance 20 6 1 Regular maintenance of the installation 20 6 2 Fuse 20 6 3 Replacement of supply cable 20 6 4 Power supply and motor material protections 21 6 5 Filters 21 7 Troubleshooting 22 8 Accepta...

Страница 3: ...ody hands feet etc This appliance is not intended for use by persons including children with reduced physical sensory or mental capabilities or lack of experience and knowledge unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety To avoid any risk do not allow them to play with the appliance The electrical installation and ...

Страница 4: ...ow With this strategy the exhaust airflow 5 increase depending on the sensors measurement which will drive consequently the supply airflows Supply airflows as they are distributed through a passive distribution box 2 are identical in all the different main rooms to the nearest drop pressure losses On the exhaust side the exhaust units 5 adjust automatically the airflow according to parameters read...

Страница 5: ...xhaust unit for balance Interface Heat recovery unit with balanced demand controlled airflows Preheater 8 Galvanised steel body with built in resistance MCP 125 7 Exhaust compensation valve S CO2 4 CO2 sensor SDC 100 3 Supply unit S PRE Presence sensor Air intake and outlet grilles 9 BXC 5 Exhaust units various sensors RJ 12 RJ 45 cables Acoustic attenuation 10 List of components supply aiflows ex...

Страница 6: ...ans and the exchanger Continously checking of filter clogging and warning for filter change High efficiency heat exchanger with plastic plates washable Intelligent electronic control unit of the heat recovery with integrated or remoted control interface Integrated bypass and free cooling automatically controlled Built in siphon or condensate pump to evacuate the condensate 2 3 DXA ASSEMBLING When ...

Страница 7: ...it CO2 sensor Exhaust compensation valve Max altitude of the product installation 2000 m 2000 m 2000 m Temperature range of the installation place 5 C 50 C 5 C 40 C 5 C 40 C Humidity range of the installation place 5 95 Max 80 at 31 C linear decrease up to 50 at 40 C 5 95 3 2 DXA UNIT The caps on the DXA Unit must stay during the entire duration of the work in order to keep dust and pollution from...

Страница 8: ...essible to be able to disconnect the DXA Unit from the supply before any operation on the appliance The circuit breaker must be easily identified and accessible 3 2 3 FIXING OF THE DXA UNIT The DXA Unit is fixed on a wall thanks to the use of two metal brackets specific to Aereco The first bracket is fixed in the DXA while the second bracket is screwed in the wall The two brackets are assembled on...

Страница 9: ... TF6400_A Aereco S A Installation of the fixing system 1 5 6 7 8 x2 x12 x12 x12 DXA Unit DXA Unit 2 3 4 Ø6 mm Note For plasterboard walls molly metal anchors may be used instead of provided plastic anchors ...

Страница 10: ... a distribution box by a Ø100 mm for rigid duct or by a Ø75 mm duct for semi rigid duct Each semi rigid duct cannot afford an airflow bigger than 30 m3 h 1 Ø100 or Ø75 mm 2 Ø100 mm or Ø125 mm 3 Ø160 mm 4 Ø160 50 mm insulation Supply rigid or semi rigid duct flexible connection to the unit 1 m max avoid noise in the room Exhaust air rigid avoid pressure drop or semi rigid duct Air intake and air ou...

Страница 11: ...NSATES To evacuate condensates it is recommended to use a lift pump It is also possible to use a siphon to evacuate them by gravity but a minimum slope of about 3 is recommended for the good evacuation of condensates To ensure watertight connections between the condensate evacuation pipe and the lift pump or the siphon the DXA Unit is delivered with these components already built in The DXA1240 is...

Страница 12: ...pressure at the same level than the extract units This measure takes into account the pressure drops through filters and exhaust ductwork It ensures at the extract units the require pressure needed for a perfect running with a very high accuracy 232 205 Ø125 mm Exhaust compensation valve Positioning of the exhaust compensation valve with access hatch D 38 cm D 38 cm Check the good quality of the p...

Страница 13: ...ual reset or for maintenance access hatch Manual reset of the defrosting 1 Unscrew the black cap 2 Push the red button and screw back the black cap on The defrosting must not be installed with the electrical device at the bottom Note The DXA Unit has been specially designed to work with the defrosting provided by Aereco defrost strategy specific to DX System and adapted diameter Besides it has bee...

Страница 14: ...tion for 20 minutes after the last detection If no detection supply airflow is reduced to a minimum to save energy 3 5 2 C02 SENSORS DX S C02 C02 Sensors must be installed on the wall at a height of at least 1 5 from the floor or at the ceiling and must respect the following recommendations keep the sensor away from any direct solar radiation keep the sensor away from draughts door window supply e...

Страница 15: ...status Energy Energy Maintenance Maintenance Boost ventilation Free cooling Settings System status Energy Maintenance Boost ventilation Free cooling Settings System status Energy Maintenance RJ12 cable DXA Unit with its interface fixed on a wall Opening of the user s interface dedicated for a wall fixation DXA Unit and its built in interface Boost ventilation Free cooling Settings System status Sy...

Страница 16: ...e main rooms in that case Avoid slopes flexible ducts must be securely attached Tauten the straight parts so that the duct is smooth and straight when using flexible or semi flexible ducts If the flexible duct is longer than necessary it must be cut rather than pushing the surplus into the false ceiling Do not crush the duct or squeeze it down to force it through a narrow passage The interior of t...

Страница 17: ...e in the country B C B A E F 230 VAC 230 VAC D G 230 VAC A Interface B Presence sensors C CO2 sensor D DXA Unit E Defrosting F Lift pump G Compensation valve at exhaust RJ 45 RJ 12 specific to Aereco Defrosting control 0 5 mm Input pump alarm 0 5 mm Supply 230 V 1 5 mm Note RJ12 and RJ45 cables provide both supply and connections RJ12 maximal length RJ45 maximal length DXA Unit to the interface 10...

Страница 18: ...ting control 9V optional 6 Compensation exhaust valve RJ 45 7 9VDC OUTPUT 8 230VAC 50 60Hz 180W max 9 ON OFF DXA Unit 1 2 3 4 5 7 6 9 To circuit breaker 2A N GND L 8 230VAC 1 5mm 230VAC 1 5mm 230VAC 1 5mm The main power supply is on the DXA Unit Sensors user s interface and the exhaust compensation valve are accessed from communication bus Optional exhaust units can be connected to 9 VDC output su...

Страница 19: ...tandards in force in the country of installation Plan a contact separation device having an opening distance of at least 3 mm on each pole Note there is no alarm in the defrosting provided by Aereco Details of condensate pump electrical connections 4 3 ELECTRICAL CONNECTION OF THE CONDENSATE PUMP FOR DXA 1247 THE DXA1247 is provided with a built in siphon It is still possible to connect a condensa...

Страница 20: ... the heat recovery unit It is essential to replace all filters at the same time once a year Fresh air inlet and exhaust air outlet check the unobstructed passage of air no dead leaves no snow Supply and exhaust units cleaning as recommended by the manufacturer this part can be done by the occupant Evacuation of condensates check that the system is not obstructed by impurities WARNING Plan replacem...

Страница 21: ...ly realised through the three access hatches no tool needed The metal cover of the DXA Unit must not be dismounted for this operation All filters 1xG4 and 2xF7 must be replaced at the same time Filter removal replacement Removal 2 Remove the three filter hatches by pulling on the hatches handle Fresh air outdoor Exhaust air indoor 3 Remove each filter by holding it firmly along its edge and pullin...

Страница 22: ...installation Too high number of extraction grille Check the operating limits Filters are clogged Make sure filters have been changed when system asked for it Heat exchanger is frozen Using a defrosting Make sure the defrosting is connected to the unit and to the main Make sure the defrosting is taken into account in the parameters of the DXA Unit user s interface Make sure the manual reset of the ...

Страница 23: ...A UNIT Remarks Accessibility Positioning of the DXA Unit vertical and fixation of the DXA Unit to the wall Conformity of connection direction shown by the arrows on the DXA Unit Flexible connection sleeve at the DXA Unit and airtightness of the connections Exhaust air and fresh air duct insulated and Ø160 mm ELECTRICAL DEVICE Remarks Supply voltage Ground connections RJ 12 and RJ 45 connections In...

Страница 24: ... air ducts in heated space must be insulated with 50 mm insulation to avoid any condensation problems 9 SPECIFIC RECOMMENDATIONS FOR AIRTIGHTNESS AND INSULATION OF THE INSTALLATION To remain airtight in the long term the ductwork must be mechanically strong attachment between duct elements and correctly supported Failing this the sag may eventually crack the mastic Any duct carrying hot air that i...

Страница 25: ...iercing screws can be used to make accessories and ductwork with gaskets as explained by the manufacturers If it is not planned to use accessories with gaskets it is essential to use a special airtight ventilation adhesive at each junction between ducts or mastic Take care also to do as little cutting as possible on site Any bushings through walls the roof etc must be made with rigid duct In order...

Страница 26: ...bushing Recommendations to control the tightness of the unit 1 2 3 3 1 2 5 6 4 3 1 Roof hoods 2 Mastic seal 3 Skylight frame 4 Bonding with vapour barrier adhesive tape or pose of a sleeve with adhesive tape 5 Vapour barrier 6 Mastic seal 1 Insulation 2 Mastic seal 3 Tube Junction between the unit and the duct by coupling with gasket 1 Airtight spigot 2 BXC exhaust unit with peripheral seal includ...

Страница 27: ...rying hot air that is outdoors or in an unheated volume must be insulated with 50 mm of glass wool or equivalent The exhaust of the DXA Unit operates at a constant pressure of 60 Pa This makes it necessary to set the BXC unit to the correct position fixed shutter in order to guarantee the desired flow rates see BXC installation instruction Units can be wall mounted or installed in the ceiling they...

Страница 28: ...etween each setting of 10 m3 h maximum 50 m3 h See the table below for more details concerning the airflow set up at 60 Pa Ø 100 mm Ø 125 mm Pos Min airflow m3 h 60 Pa Max airflow m3 h 60 Pa Pos Min airflow m3 h 60 Pa Max airflow m3 h 60 Pa 0 9 62 0 9 54 1 14 70 1 14 62 2 19 77 2 19 70 3 23 85 3 23 77 4 28 93 4 28 85 5 33 101 5 33 93 Case of exhaust units with manual flow control The installation ...

Страница 29: ...ries of the European Union and other countries with special collection centre The symbol on the appliance indicates that this appliance should not be treated as domestic waste It must be taken to a special collection centre for the recycling of electrical and electronic equipment For further information on the treatment recovery and recycling of this product contact your competent local office the...

Страница 30: ...2 10 EN 60335 1 2012 DIN EN 60335 2 40 VDE 0700 40 2010 03 EN 62233 VDE 0700 366 2008 11 14 CHARACTERISTICS 1 2 3 7 5 6 8 4 9 10 11 12 13 1 Base 2 Condensate pump specific to DXA1240 3 Siphon specific to DXA1247 4 Fans 5 Bypass 6 F7 filters 7 G4 filter 8 Heat exchanger 9 Condensates receiver 10 Spigots 11 Control and supply box 12 Access hatches of the filters 13 Bottom cover 14 Ducts cover option...

Страница 31: ...its type humidity presence switch C02 VOC Characteristics Exchanger polystyrene counter flow type 93 efficiency Filters on supply air 2 x F7 on exhaust air 1 x G4 Weight kg 23 Colour white Material main expanded polypropylene EPP covered by a white galvanized metal sheet Dimensions mm with duct connectors 1428 x 552 x 545 without duct connectors 1188 x 552 x 545 Installation Max number of main roo...

Страница 32: ...250 300 350 0 50 100 150 200 250 0 10 20 30 40 50 60 70 80 90 100 a b c d Pressure in Pa Airflow in m3 h Power in W Airflow in m3 h 80 m3 h 140 m3 h 200 m3 h 230 m3 h DXA Unit maximal airflow setting a 49 dB b 54 dB c 59 dB d 60 dB Sound power level Lwa 80 m3 h 140 m3 h 200 m3 h 230 m3 h DXA Unit maximal airflow setting DXA UNIT AERAULIC CURVES WITH SOUND POWER LEVEL VALUES DXA UNIT POWER CONSUMPT...

Страница 33: ...33 36 TF6400_A Aereco S A Notes ...

Страница 34: ...34 36 TF6400_A Aereco S A Notes ...

Страница 35: ...35 36 TF6400_A Aereco S A Notes ...

Страница 36: ...pyright Aereco All data and pictures in this document are non contractual and are subject to change without prior notice Aereco S A 62 rue de Lamirault Collégien 77615 MARNE LA VALLEE CEDEX 3 FRANCE www aereco com ...

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