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5. Maintenance, hygiene and servicing

5.1 Opening the VEX unit

The VEX unit's detachable panels must be opened to allow servicing and cleaning.

Removal of doors

Refer to the section on “Handling" for more information

5.2 Maintenance

Recommended in-
tervals

The following chart details the recommended maintenance intervals, under normal
operating conditions. EXHAUSTO recommends maintenance is adjusted to suit
the actual operating requirements.

5.2.1 Maintenance Schedule

Component

Procedure

Once

a year

Twice

a year

Filters*

Change when the display shows the filter alarm.

.

Recommended that both filters are replaced at the
same time.

NB:

The control system may give an 'early warning'

when a filter is becoming soiled, so that a new filter can
be obtained or a service fitter called

X

The filter should be changed at least

X

Filter monitor

Check that all the seals in the filter guide are tight.

X

Seals and sealing strips

Check that all the seals are tight.

X

Fans

For inspection, removal and cleaning of fan unit, see
section "Servicing" and "Cleaning"

X

Cooling/heating coil**
(HW/HE/CW/DX)

For inspection, removal and cleaning of the coil, see
section "Servicing" and "Cleaning"

X

Counterflow heat exchang-
er

For inspection, removal and cleaning of the counterflow
heat exchanger, see section "Servicing" and "Cleaning"

X

Condensation outlet

Inspection and cleaning of:

● Condensation outlet
● Condensation tray
● Water trap

See section "Cleaning"

X

Safety functions**

Inspection of:

● Fire thermostats
● Temperature sensors on heating pipe (accesso-

ries)

See instructions for the unit

X

Closing damper**

Function check

X

Motor valve and circulation
pump**

Function check

X

3005993-2021-03-09

Maintenance, hygiene and servicing

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Содержание VEX300 Series

Страница 1: ...roduct information Chapter 1 6 Mechanical assembly Chapter 2 3 Electrical installation Chapter 4 Maintenance Chapter 5 Original instructions 3005993 2021 03 09 VEX300T EXHAUSTO A S Odensevej 76 DK 5550 Langeskov Tel 45 65 66 12 34 Fax 45 65 66 11 10 exhausto exhausto dk www exhausto com ...

Страница 2: ...2 2 1 Passage through openings 19 2 2 2 Removal of doors 19 2 2 3 Internal transport with reduced weight 20 3 Mechanical installation 3 1 Installing the VEX unit 21 3 1 1 Installation directly on floor 21 3 1 2 Installation on mounting base 21 3 2 Condensation outlet 21 3 2 1 Establishment of condensation outlet 21 3 3 Control box 23 3 3 1 Installation of control box 23 3 4 Water connection HW CW ...

Страница 3: ...X 36 5 5 4 Cleaning the condensation outlet 36 6 Technical data 6 1 Weight corrosion class temperature ranges etc 37 6 1 1 Weight 37 6 1 2 Corrosion class cabinet 37 6 1 3 Temperature ranges 37 6 1 4 Fire thermostat 37 6 1 5 Motor damper 38 6 2 Water coils HW CW 39 6 2 1 Data VEX310T 350T 39 6 2 2 MVM motor valve 40 6 3 Cooling heating coils DX 41 6 4 Panel filters 41 6 4 1 Filter data 41 6 5 Capa...

Страница 4: ...ual uses the following terminology Supply air Extract air Outdoor air Exhaust air Accessories The confirmation of order states which accessories are delivered with the VEX unit Definition In the type designation R stands for Right indicating that the supply air is to the right of the unit as seen from the operating side Supply air to the left is designa ted with L for Left Opening the air handling...

Страница 5: ...ioned to the left of the control system box The VEX unit information plate shows the VEX variant designation unit production order no year NB Always have the production order number ready when contacting EXHAUS TO A S Filter label Filter labels are positioned on the front of the VEX unit door opposite each filter The VEX unit filter label shows Rated airflow indicated by installer Number of filter...

Страница 6: ... your information Supplied dokumentation Assembly and installation instructions Electrical installation guide Print out from calculation program Mechanical assembly Electrical installation Start up operation Maintenance Service 3005993 2021 03 09 6 44 ...

Страница 7: ...on 1 1 Designations used in these instructions 1 1 1 Simplified diagram The simplified diagram shows a VEX unit with RIGHT fan placement See table with designations on next page 3005993 2021 03 09 Product information 7 44 ...

Страница 8: ...air fan Standard P2 2x and P2 2y Points for measuring pressure rise across supply air fan Standard P2 1x and P2 1y Points for measuring pressure drop across outdoor air filter Standard P1 1x and P1 1y Points for measuring pressure drop across extract air filter Standard 1 2 Use Comfort ventilation EXHAUSTO VEX is used for comfort ventilation tasks Operating temperature range for the unit see secti...

Страница 9: ...eded for servicing the VEX unit i e changing filters cleaning servicing etc NB Space must be reserved for connecting and servicing any water supply to the top right R or left L VEX310T 320T C A B RD14045 01 D All dimensions in mm VEX size A Depth B Removing the exchanger C Removing of filter D Filter 310T 595 300 1 item 1050 A D 455 320T 865 300 2 items 1592 A D 725 3005993 2021 03 09 Product info...

Страница 10: ...D 795 1675 1500 340T 935 310 2 items 1730 A D 795 1880 1900 350T 990 710 2 items 1840 A D 850 2180 2400 NB For VEX units with hinged openable doors there must be space allocated on each side of the VEX unit to ensure that the doors can be fully opened See sketch F 60 60 RD14093 01 See section Principal dimensions for more VEX unit dimensions 3005993 2021 03 09 Product information 10 44 ...

Страница 11: ...n 135 mm above floor height 1 3 4 Requirements for duct system Duct connection To achieve maximum performance and minimal energy consumption the VEX unit should be connected to the duct system with a straight duct at least 500 mm long before and after the unit Silencers The duct system must be fitted with silencers specified by the Project Manager in accordance with the requirements of the operati...

Страница 12: ...y from the cooling coil condensation tray External condensation outlet connects here 6 Counterflow heat ex changer Conducts heat from extract air to supply air 7 Condensation tray Collects the condensate and drains it away from the counterflow heat exchanger to the condensation outlet 8 Spigot for condensation outlet under counterflow heat exchanger Collects condensate from counterflow heat exchan...

Страница 13: ...eat exchanger can be removed and cleaned See section Servicing and cleaning Filters The unit includes integral panel filters for both extract air and supply air Bypass damper The VEX unit has an integral variably adjustable bypass allowing for precise con trol of the supply air temperature Integrated water heating coil HW The water heating coil is integrated in the VEX unit and is able to increase...

Страница 14: ... N O N M L M L 1 2 2 2 1 1 2 1 RD14068 01 A C E D B G F H H I J K A A I J K VEX320T RIGHT P P P P O N O N M L M L 1 2 2 2 1 1 2 1 RD14067 01 A C B E G H F H D I J K A A VEX320T J K I The indicated dimensions A P are shown on the dimensional drawing and can be read off from the tables next to the given VEX size 3005993 2021 03 09 Product information 14 44 ...

Страница 15: ...ensions in mm 1 5 3 Dimensions of water connection outlet VEX size F G H I J K 310T 415 90 25 112 81 203 320T 415 90 25 82 122 244 330T 540 90 25 134 90 212 340T 685 90 25 132 105 236 350T 864 90 25 133 105 236 All dimensions in mm 1 5 4 Dimensions of duct connection VEX size L M N O P 310T 383 217 414 181 250 320T 614 258 385 222 315 330T 671 259 532 226 315 340T 627 303 685 269 400 350T 635 353 ...

Страница 16: ...l sketches feet RD14070 01 A B C C O 2 5 5 1 5 6 Dimensions of feet VEX size A B C 310T 1172 340 320T 1172 610 330T 1472 677 340T 677 936 350T 735 1186 All dimensions in mm 3005993 2021 03 09 Product information 16 44 ...

Страница 17: ...c NB Once the plastic has been removed the unit must be protected against dirt and dust The covers on the spigots must not be removed until the spigots are connected to the ventilation ducts Whenever possible keep the unit closed during fitting The unit should be cleaned before it is used Once the VEX unit is fitted it must be checked and thoroughly cleaned All dust debris and metal shavings must ...

Страница 18: ...ck or fork lift truck IMPORTANT The forks on the lifting equipment must be long enough to prevent damage to the bottom of the VEX unit NB VEX350T requires lifting equip ment for lowering the VEX unit through the side of the lorry RD14054 01 Crane Never lift the VEX unit with the lifting brackets by using a crane Use straps and lifting yokes to pre vent damage to the VEX unit RD14055 01 3005993 202...

Страница 19: ...nsions in mm The figures for Height Depth and Width A B and C can be seen on the dimen sional sketches in the section Principal dimensions 2 2 2 Removal of doors The following tools are needed for removal Screwdriver electric screwdriver with following bits Allen key 6mm Allen key 3mm RD14052 01 Disconnect power at the isolation switch before opening VEX unit Step Action 1 Unscrew the bolts from t...

Страница 20: ...157 204 265 345 530 Counterflow heat ex changer items 1 7 2 2 7 2 2 10 2 2 19 8 2 35 Fan unit items 2 4 1 2 6 4 2 9 2 2 9 5 2 20 Panels doors 62 62 81 105 175 VEX for internal transport no doors heat exchanger or fan units 80 115 146 182 245 All weights in kg Removal See section Maintenance hygiene and servicing for instructions on removing fan unit and counterflow heat exchanger and for extractin...

Страница 21: ...let must be made by an au thorised plumber Drain the condensation outlet into a floor gully or similar The condensation outlet must be fitted with a water trap See below Risk of frost Where there is a risk of frost It is recommended to protect the condensation outlet against frost damage Fit a SIPHONE electri cal heat tracing device on the outlet before the pipes are insula ted For fitting see the...

Страница 22: ...olution with HT pipe Use HT pipe HT DN32 DIN4102 if the above solution is not employed not sup plied by EXHAUSTO RD14063 01 Min 50mm Min 75mm NB If the VEX unit is erected on a mounting base accessory this will allow sufficient free height for installing a Siphon water trap 3005993 2021 03 09 Mechanical installation 22 44 ...

Страница 23: ... Step Action 1 Remove the 2 lower screws on the top panel of the VEX unit 2 Loosen the 2 upper screws 3 Remove the screws at each end of the control box to loosen the lid front 4 Turn the control box around and secure it to the loosened screws using the key holes 5 Screw in the 2 lower screws and tighten all 4 screws 6 Fit the lid front of the control box 7 Remove the screws on the cable rail and ...

Страница 24: ...inciple Simplified diagram Mixing loop 1 Variable flow in the primary circuit supply and con stant flow in secondary cir cuit VEX unit Mixing loop 2 Constant flow in the pri mary circuit supply and the secondary circuit VEX unit a When there is no heat ing or cooling requirement valve adjustment must be based on the required pri mary circuit water flow Do not connect the water coil like this Conne...

Страница 25: ...eating coil the system must be bled thoroughly Insufficient bleed ing Insufficient bleeding can result in still water forming in the sys tem which may result in frost induced leaks at cold ambient temperatures Fitting motor valve The valve must not be fitted with the motor facing down Insulate the feed pipe The pipes must be insulated according to applicable regulations Frost protection cooling co...

Страница 26: ...eratures below 0 C it is very impor tant that the valve section is insulated according to current standards Regulation proper ties The motor valve s regulation properties are best when the differential pressure is between 5 20 kPa See section Technical specifications to calculate Kvs Water supply The water supply must be constant This applies to both cold and hot water sup ply 3005993 2021 03 09 M...

Страница 27: ...x pansion expansive forces or vibrations are transferred to the coil s tube sys tem These could damage the coil tubes Ensure that the DX coil s tubular manifold is not weighed down by the self weight of the battery Avoid excessive use of heat during pipe connection as this could damage soldered and welded joints 3 5 1 Principles for connecting the DX coil Simplified diagram Simplified diagram for ...

Страница 28: ...tallation guide VEX310T 320T 330T 340T 350T for third party control system Electrical installation Chapter 1 2 Original instructions 300 11 2018 09 10 VEX300T X EXHAUSTO A S Odensevej 76 5550 Langeskov Denmark Tel 45 65 66 12 34 Fax 45 65 66 11 10 exhausto exhausto dk www exhausto dk RD14102 01 3005993 2021 03 09 Electrical installation 28 44 ...

Страница 29: ...ined or a service fitter called X The filter should be changed at least X Filter monitor Check that all the seals in the filter guide are tight X Seals and sealing strips Check that all the seals are tight X Fans For inspection removal and cleaning of fan unit see section Servicing and Cleaning X Cooling heating coil HW HE CW DX For inspection removal and cleaning of the coil see section Servicing...

Страница 30: ... 3 Hygiene VDI6022 air hygiene standard To ensure that the VEX300T meets the requirements of the VDI6022 hygiene stand ard its design ensures that bacterial growth and dirt accumulation are minimal conditions for cleaning are optimum Filter ePM1 55 The outdoor air side of the unit must be fitted with an ePM1 F7 filter to meet VDI 6022 requirements 5 4 Service 5 4 1 Filter change Warning Disconnect...

Страница 31: ...lips screwdriver Diagonal cutter 2 new strips assembly Removing the fan unit Step Action 1 Disconnect the plugs from the fan unit motor 2 Unscrew the earth wire 3 Cut the strips on the cables and hoses 4 Remove the hose for measuring the fan airflow 5 Unscrew 2 screws and remove the bracket holding the fan unit 6 Lift the fan unit out of the VEX unit 3005993 2021 03 09 Maintenance hygiene and serv...

Страница 32: ...or brack et is free of the counterflow heat exchanger before extracting it 2 VEX310T Remove the counterflow heat ex changer all the way VEX320T 350T Pull out the front counterflow heat exchanger and then the rear one Note the weight of the heat exchanger see technical data min two people when lifting 3 VEX310T Replace the counterflow heat ex changer VEX320T 350T Replace both counterflow heat excha...

Страница 33: ...sembly Removing the coil Step Action 1 Turn off the unit s water supply 2 Place a bucket or bowl under the coil to collect water from the connec tion hoses 3 Remove insulation strips and sensors from the connection ho ses 4 Undo the union nuts on the wa ter coil 5 Pull out the water coil NB Bleed the system after mounting the water coil 3005993 2021 03 09 Maintenance hygiene and servicing 33 44 ...

Страница 34: ...mp cloth if necessary Clean the blades on the fan impeller carefully to avoid disrupting the balance If there are weights on the fan impeller these must not be re moved 2 After cleaning check that the VEX unit operates without vibrating 5 5 2 Cleaning the counterflow heat exchanger See section Remove fan unit for description of how to remove the fan unit from the VEX unit Step Action 1 Clean the c...

Страница 35: ...Step Action 2 Check that the fins on the counterflow heat exchanger are not de formed The fins are sharp 3005993 2021 03 09 Maintenance hygiene and servicing 35 44 ...

Страница 36: ...shing or rinsing with water Please note Take care when pressure washing not to damage the fins 2 Check that the fins on the heating coil are not deformed The fins are sharp 3 Clean the condensation tray under the coil for CW DX 5 5 4 Cleaning the condensation outlet A condensation outlet with water trap must be established from the condensation tray for the heat exchanger and cooling coil option S...

Страница 37: ... Corrosion class C4 in accordance with EN ISO 12944 2 6 1 3 Temperature ranges Temperature of medium outdoor air 40ºC to 35 Ambient temperature operating 30ºC 40ºC Ambient temperature when not in operation storage transport 40ºC 60ºC The temperature ranges given are dependent on the type of installation humidity airflow the balance between airflows ducts and insulation and room temperature 6 1 4 F...

Страница 38: ...lass IP42 IP42 Ambient temperature 20ºC to 50ºC 30ºC to 50ºC Damper depth 100 mm 100 mm Dimensions VEX size Diameter Damper type 310T Ø250 mm LS250 24 LSR250 24 320T Ø315 mm LS315 24 LSR315 24 330T Ø315 mm LS315 24 LSR315 24 340T Ø400 mm LS400 24 LSR400 24 350T Ø500 mm LS500 24 LSR500 24 A maximum of two LSFR dampers or four LSA LSF dampers may be connected 3005993 2021 03 09 Technical data 38 44 ...

Страница 39: ...without fluid kg 2 15 2 75 3 0 5 25 Fluid content l 0 192 0 323 0 322 0 581 Number of pipe rows 1 2 2 4 Number of circuits 1 1 2 4 Fin spacing 1 5 2 2 2 5 Face area h x b mm 200 x 637 Connection dimension DN15 1 2 Test pressure kPa 3000 Max operating press kPa 1600 VEX330T Data Variants sizes HW 1 HW 2 CW 1 CW 2 Weight without fluid kg 3 4 5 4 0 7 75 Fluid content l 0 700 1 315 0 792 2 612 Number ...

Страница 40: ... pipe rows 1 2 2 4 Number of circuits 4 5 8 25 Fin spacing 1 4 2 2 2 5 Face area h x b mm 625 x 750 625 x 750 625 x 750 625 x 750 Connection dimension DN25 1 Test pressure kPa 3000 Max operating press kPa 1600 6 2 2 MVM motor valve Valve data Kvs 0 25 4 0 Kvs 6 3 Test pressure kPa 1600 1600 Max differential pressure kPa 200 200 Permitted temperature of medium C 5 110 5 110 The valve will remain op...

Страница 41: ...r pressure kPa 4200 6 4 Panel filters 6 4 1 Filter data Filter class according to ISO 16890 Coarse 65 ePM10 65 ePM1 55 ePM1 80 VEX size Data 310T panel h x b mm 312 x 453 320T panel h x b mm 312 x 723 330T panel h x b mm 363 x 794 340T panel h x b mm 471 x 794 350T panel h x b mm 614 x 850 Panel thickness mm 48 96 48 96 48 96 96 Filter class according to EN 779 G4 M5 F7 F9 Temperature resistant to...

Страница 42: ...ing spare parts Find production number When ordering spare parts the production order number must be stated This will ensure that the correct parts are delivered The production order number is given on the front of the VEX instructions and on the VEX unit information plate Contact Contact your local sales office to order a spare part Contact information can be obtained by scanning the QR code on t...

Страница 43: ...ellular rubber Dumping or incineration Fan motors bypass motors Aluminium steel copper and plastic For recycling after disassembly Control unit Electronic compo nents For recycling by an authorised enterprise Cassette filter Fibreglass and plas tic Dumping or incineration Unit is supplied on dis posable pallets Wood Dumping or incineration Percentage weight Handling Percentage weight of materials ...

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