3004248-2021-05-07 1. Product information 1.1. Location in room....................5 1.1.1. Optimum location .................... 5 1.1.2. Space requirements ..................5 1.2. Application......................6 1.3. Designations used in these instructions.............6 1.3.1. Simplified diagram....................6 1.4. Description......................8 1.4.1. Construction of the VEX unit................8 1.4.2.
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Failure to observe instructions marked with a danger symbol may result in personal injury and/or damage to the unit. Scope This instruction manual is for use with EXHAUSTO VEX-type air handling units. Please refer to the product instructions regarding accessories and extra equip- ment.
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3004248-2021-05-07 Find the newest version of the publication by searching for the order number on the EXHAUSTO website under Downloads Supply air/extract This instruction manual uses the following terminology: ● Supply air (air blown in) ● Extract air (air removed) ●...
Product information 3004248-2021-05-07 1. Product information 1.1 Location in room 1.1.1 Optimum location As far as possible the unit should be located in the middle of the wall. Avoid placing the VEX308 on the long side of narrow rooms. 1.1.2 Space requirements The sketch shows how much space is required under the unit for opening the door and servicing.
3004248-2021-05-07 1.2 Application Comfort ventilation EXHAUSTO's VEX308 unit is used for comfort ventilation in frost-free single-room locations. The VEX unit is designed for wall or ceiling mounting and must be used as such. Operating temperature range for unit see section "Technical data".
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Product information 3004248-2021-05-07 With integral elec- tric heating coil, HCE (top view) Component Function Standard/accesso- ries HE30802E Electric heating coil Accessory HW308SE/ Water heating coil Accessory HW308LE Extract/exhaust air motor Standard Outdoor/supply air motor Standard Bypass motor Standard TE11 Temperature sensor, extract air Standard TE12 Temperature sensor, exhaust air...
Product information 3004248-2021-05-07 1.4 Description 1.4.1 Construction of the VEX unit The drawing below shows an overview of the VEX unit construction. Details of HCW and HCE are viewed from below: Pos. Part Function Water valve Motor for water valve Bleeder valve Bleeding of water system MHCE...
Product information 3004248-2021-05-07 Pos. Part Function CO2 sensor or humidi- Sensors for on-demand control ty Sensor, RHB Extract air filter Filters extract air Socket Connection for HMI service cable Control system, termi- Control system, connection of accessories nal block Fan unit For extract/exhaust air Guide channel for con- Used when condensation outlet is fitted...
Mounting 3004248-2021-05-07 2. Mounting 2.1 Unpacking Standard delivery ● VEX308 unit ● Housing panels packed separately ● Wall brackets premounted on VEX (accessories on some models) ● Ceiling brackets, supplied separately Any included ac- See information about included accessories on front page of these instructions. cessories 2.2 Wall mounting (accessories for some models) 2.2.1 Requirements for wall...
Mounting 3004248-2021-05-07 Step 1-11 Action Mount the outside duct grilles. Mount the wall bracket on the wall. Lift the VEX into place with suitable lifting equipment (e.g. an elec- tric stacker), protecting the door from scratches with a piece of cardboard or similar between the door and the lifting equipment.
Mounting 3004248-2021-05-07 2.3.3 Ceiling mounting step by step See the attached installation guide (3004368). Step 1-14 Action Open the door and dismount the exhaust fan. Turn the exhaust fan so the exhaust is at the top of the VEX and retighten.
3004248-2021-05-07 The partly-integrated VEX extracts a small amount of air above the suspended ceiling, which can cause the filter to soil more quickly than usual. EXHAUSTO rec- ommends leaving a 10 mm gap between the cabinet and the suspended ceiling.
Electrical installation 3004248-2021-05-07 3. Electrical installation 3.1 Supply voltage and fuses 3.1.1 Position of power socket The supply cable is fitted with a 230V plug and can thus be connected to a power socket. Fit the power socket for the supply voltage close to the VEX unit and preferably within the easy reach of users of the room.
Technical data 3004248-2021-05-07 4. Technical data 4.1 Weight, corrosion class, temperature ranges, etc. Weight Door 25.5 kg Counter flow heat exchanger 2 x 11 kg Motor section 2 x 6.0 kg Total weight 184.5 kg incl. HW308SE Partly integrated 203.0 kg incl. HW308SE Corrosion class, cabinet Corrosion class...
Technical data 3004248-2021-05-07 Data, thermal cut- Thermal fuse, TSA70 70 ℃ Thermal fuse, TSA90 90 ℃ Contact type NC (Normally closed) Maximum load 1.6 A @ 24 V DC Motors and heating coils may not be interrupted/switched off via OH70 and OH90 4.3.2 Water heating coils Electrical data for VEX with water...
Technical data 3004248-2021-05-07 4.3.3 MVM motor valve Valve 0.63 Test pressure 1600 kPa Max. differential pressure 200 kPa Permissible media temperature 5-110°C The valve will remain permanently open if the differential 200 kPa pressure is over Motor 0.63 Permissible ambient temperature -30 to +50°C Ingress protection, in accordance with IEC IP40...
Technical data 3004248-2021-05-07 4.6 Capacity diagram and diagram for specific power consumption 4.6.1 Capacity diagram Read control volt- When an EXact control panel (HMI) is connected to the VEX unit, the control volt- age can be read from menu 2.3 and thereby give a reasonable reading of airflow on the diagram.
Technical data 3004248-2021-05-07 4.6.2 Capacity diagram - mounting on "duct system" 1) Visible unit max. 750 m 2) Partly integrated unit max. 650 m 21/24...
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