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Vents VUT 350 U EC Operation Manual

Air supply and exhaust unit
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OPERATION MANUAL
Air Supply and Exhaust Unit
VUT 350 U EC
VUT 350 EU EC

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Summary of Contents for Vents VUT 350 U EC

  • Page 1 OPERATION MANUAL Air Supply and Exhaust Unit VUT 350 U EC VUT 350 EU EC...

  • Page 2: Table Of Contents

    VUT 350 (E)U EC VUT 350 (E)U EC CONTENTS Introduction Purpose Delivery Package Designation key Main Technical Specifi cations Safety Requirements Design and Operating Logic Installation and Setup Condensate Drainage Connection to Power Mains Unit Control Technical Maintenance Fault Handling Storage and Transportation Regulations Manufacturer’s Warranty Acceptance Certifi cate...

  • Page 3: Introduction

    The present operation manual consisting of the technical details, operating instructions and technical specifi cation covers the installation of the VUT 350 (E)U EC air handling unit with heat recovery of VENTS series (hereinafter the Unit). PURPOSE The unit with heat recovery is designed to save thermal energy by means of thermal energy utilization and is one of the energy saving components used in buildings and premises.

  • Page 4: Designation Key

    VUT 350 (E)U EC VUT 350 (E)U EC DESIGNATION KEY VUT 350 Motor Type Electronically Commutated Spigot Arrangement U – angular (versatile) Electric heater Air capacity, m³/h Unit type VUT - heat recovery ventilation MAIN TECHNICAL DATA The unit is designed for operation in an enclosed area at ambient temperatures from +1 °C to + 40 °C at relative humidity of up to 80%.
  • Page 5 Table 1 . Technical Parameters Model VUT 350 U EC / VUT 350 EU EC Ventilation Mode Speed 1 Speed 2 Speed 3 Supply Voltage, V/50 Hz 1 ~ 230 Maximum Fan Power, W Fan Current, A 0,29 0,97 1,48...

  • Page 6: Safety Requirements

    VUT 350 (E)U EC VUT 350 (E)U EC SAFETY REQUIREMENTS Installation and operation of the unit shall be subject to the present Operation Manual and the all appliable local building, fi re safety, technical and electric regulatory documents. The unit must be properly earthed. Prior to connecting the unit to the power mains check for visible damage as well as for any foreign objects in the fan casing which may damage the impeller blades If necessary, contact the service centre.

  • Page 7: Installation And Setup

    INTAKE AIR SUPPLY AIR 2 m cable EXHAUST AIR EXTRACT AIR Fig. 2. Design and Operating Logic INSTALLATION AND SETUP While installing the unit ensure convenient access for subsequent maintenance or repair. The wall intended for unit installation must be smooth. Any surface irregularities will lead to unit casing skew and may prevent the unit from operating properly.
  • Page 8 VUT 350 (E)U EC VUT 350 (E)U EC Fig. 3. Unit Installation The wall-mounted control panel is installed as follows: Undo the clips through the access holes in the bottom of the wall-mounted control panel (Fig. 4). Remove the back cover. Disconnect the panel from the terminal block.

  • Page 9: Condensate Drainage

    Fig. 5. Fixing Back Cover to the Wall CONDENSATE REMOVAL The condensate drain pan installed in the heat recovery section has pipes for removing the condensed fl uid outside the unit. Connect the tube, the U-trap (not included in delivery package) and the sewage collection system with metal or rubber pipes (Fig.

  • Page 10: Connection To Power Mains

    VUT 350 (E)U EC VUT 350 (E)U EC The condensate drainage system is designed for indoor operation at ambient temperatures above 0 °C. If the expected air temperatures are below 0 °C, the condensate removal system must be equipped with heat insulation and pre-heating facilities. POWER MAINS CONNECTION Disconnect the unit from the power supply prior to any work.

  • Page 11: Unit Control

    UNIT CONTROL Wall-Mounted Control Panel Remote Control Unit On/Off Fan Speed Up Off Heater On Heater Fan Speed Down Speed 2 Speed 1 On Speed 3 Scheduled Operation On/Off. Timer Remote Controller Fan Speed Control Buttons Unit Operation Mode Buttons (see details below) Unit On/Off Fig.
  • Page 12 VUT 350 (E)U EC VUT 350 (E)U EC When the timer is off , the indicator goes on. Heater status information. Heater operation is confi rmed by the indicator (only applies to the VUT 350 EU EC). Open bypass damper is confi rmed by indicator on the display screen.
  • Page 13 5 minutes and then closes for 15 minutes. VUT 350 U EC: The bypass fan switches off on air temperature in the exhaust duct downstream of the heat Exchanger dropping below +3 °C. When the air temperature raises above the +3 °C threshold the unit reverts to normal operation.
  • Page 14 VUT 350 (E)U EC VUT 350 (E)U EC Adjust the fan power by using the button to increase it and the button to decrease it. Each press of the buttons increases or decreases the exhaust fan power in 1 % increments. With button pressed the display screen will indicate the current exhaust fan power.
  • Page 15 5. Filter Replacement Signal. On elapsing of the fi lter replacement interval (3 000 hours) the temperature indication on the wall- mounted control panel display screen will be substituted by the fi lter replacement alert (Fig. 16). fi lter replacement indications switch off the unit by pressing the button and...
  • Page 16 VUT 350 (E)U EC VUT 350 (E)U EC Entry Number Heater Status Time — Heater Off — Heater On Fan Speed Fig. 16. Scheduled Operation Setup Mode Indicators To select the scheduled operation setup mode parameters hold the button and use the buttons to make the selection as necessary.
  • Page 17 9. Alarms. In case of an emergency the unit switches off while the alarms are displayed on the wall-mounted panel screen (Fig. 17). The list of possible alarms is given in Table. 4. Duct Sensor Interruption Temperature Sensor Alarm Freezing Protection TEH Overheating Sensor Interruption Fig.

  • Page 18: Technical Maintenance

    VUT 350 (E)U EC VUT 350 (E)U EC TECHNICAL MAINTENANCE The unit requires maintenance works 3-4 times per year. Maintenance includes regular cleaning and the following operations: 1. Filter maintenance (3-4 timed per year). Dirty fi lters increase air resistance in the system and reduce supply air volume. Clean the fi lters as required but at least once in 3-4 months.
  • Page 19 Fig. 18. Control unit maintenance...

  • Page 20: Fault Handling

    VUT 350 (E)U EC VUT 350 (E)U EC FAULT HANDLING Troubleshooting and fault handling Trouble Possible Reasons Fault handling Make sure that the unit is properly Fan (Fans) will The unit is not connected to the connected to the power mains and not start power mains.

  • Page 21: Storage And Transportation Regulations

    STORAGE AND TRANSPORTATION RULES Store the unit in the manufacturer’s original packing box in a closed ventilated premise with temperature range from +10°C to +40°C and relative humidity less than 80% (at +20°C). Vapours or particles which can cause corrosion or damage the insulation or connection tightness are not allowed in the storage environment.

  • Page 22: Acceptance Certificate

    VUT 350 (E)U EC VUT 350 (E)U EC ACCEPTANCE CERTIFICATE The air handling unit with heat recovery VUT 350 (E)U EC has been duly certifi ed as serviceable. We hereby declare that the product complies with the essential protection requirements of Electromagnetic Council Directive 2004/108/EC, 89/336/EEC and Low Voltage Directive 2006/95/ EC, 73/23/EEC and CE-marking Directive 93/68/EEC on the approximation of the laws of the Member States relating to electromagnetic compatibility.
  • Page 24 V82EN-03 2012...

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