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Air handling unit in heat and sound-insulated casing. Air flow up to 410 m³/h. Heat recovery efficiency up to 91 %.

  • Description
  • Characteristics
  • Capacity diagram
  • Downloads
  • Dimensions
  • Additional technical data
  • Dimensions
  • Designation key
  • Accessories
  • The VUT PB EC air handling units are the fully featured ventilation units with heat recovery for air filtration, fresh air supply and stale air extract.
  • During the operation process the extract air heat is transferred to the supply air through the high-efficiency plate heat exchanger.
  • The units are applied as components of ventilation and air conditioning networks for various premises.
  • Due to high-efficient EC motors and expanded counter- flow heat exchanger surface the energy saving parameters of the units are among the best on the market.
  • Compatible with round Ø 125 and 160 mm air ducts.
  • Built-in panel filters with filtration class F7 provide efficient supply air filtration.
  • Panel filters with filtration class G4 provide efficient extract air filtration.
  • Made of galvanised steel, internally filled with a 40 mm heat- and sound-insulating layer of mineral wool.
  • The units are equipped with a 100 % bypass which can be opened if there is a need to cool down the ventilated area with cool intake air.
  • High-efficient electronically-commutated motors with an external rotor and backward curved blades.
  • These state-of-the-art motors are the most advanced solution in energy efficiency today.
  • EC motors are characterised with high performance and optimum control across the entire speed range.
  • In addition to that, the efficiency of the electronically commutated motor reaches very impressive levels of up to 90 %.
  • The units are equipped with a high-efficient counter- flow aluminium heat exchanger.
  • In the cold season the extract air heat is captured and transferred to the supply air stream which reduces the ventilation- generated heat losses.
  • This can lead to formation of condensate that is collected in a special drain pan and discharged into the sewage system.
  • In the warm season the ambient air heat is transferred to the exhaust air stream.
  • This allows for a considerable reduction of the supply air temperature which, in turn, reduces the air conditioning load.

  • The VUT PB EC A21 units are equipped with an integrated automation system.
  • The A21 controller enables integration of the unit into the Smart Home System or BMS (Building Management Systems).
  • The remote control panel is not included in the delivery set (purchased separately).
  • To control the unit via Wi-Fi, download the VENTS AHU mobile app.
  • The VUT PB EC A14 units are equipped with an integrated automation system and a wall-mounted control panel A14 with LED indication.
  • To protect the heat exchanger from freezing in the cold season, the unit has a Frost Protection mode based on the temperature sensor readings.
  • The sensor is installed in the exhaust air duct downstream of the heat exchanger.
  • The Frost Protection mode is activated at an exhaust air temperature of +3 ˚C.
  • After temperature increase the unit returns to the previous operation mode.
  • In case of freezing danger, the supply fan is turned off in VUT 160/250/350 PB EC A14 units.
  • After temperature increase the unit returns to the previous operation mode.
  • Three modes of freeze protection are available in VUT 160/250/350 PB EC A21 models:
    • gradual reduction of the supply fan speed
    • with the bypass
    • with the electric preheater (if the unit is equipped with a duct preheater).
  • The units are designed for ceiling or wall mounting (horizontal spigot orientation) in a position allowing condensate collection and removal into a special drain pan.
  • The access for filter maintenance and replacement is available from the bottom panel.
Functions A21 A14
Wired remote control panel Option (А22)
Control via a wired remote LCD control panel
Option (А25)
Wireless remote control panel Option (А22 Wi-Fi)
Control via Wi-Fi using a mobile application
Vents Cloud Server service
Freeze protection
Auto + manual
Week-scheduled operation
Filter replacement indication According to filter timer According to filter timer
According to filter clogging differential
pressure switch readings
Alarm indication + +
Speed selection + +
Timers + -
RH% sensor Option Option
CO2 sensor Option Option
VOC sensor Option Option
PM2.5 sensor Option Option
Boost mode + -
Fireplace mode + -
Preheater connection Option -
Reheater connection Option -
Cooler connection Option -
Fire alarm sensor Option Option
Minimum supply air temperature control + -
Parameter VUT 350 PB EC
Measurement unit
Frequency 50/60 Hz
Phase 1 ˜
Voltage 230 V
Maximum unit power 170 W
Maximum unit current 1.3 A
Sound pressure level at 3 m distance 34 dBА
Maximum air capacity 410 m³/h
Heat recovery efficiency 80...91 %
Casing material galvanized steel -
Insulation 40 mm mineral wool -
Filter: extract G4 -
Filter: supply * option F7 -
Connected air duct diameter 160 mm
Mass 70 kg
Heat exchanger type counter-flow -
Heat exchanger material aluminium -
SEC Class A -
Capacity diagram
Capacity diagram
  • Selection method:
  • Air flow:
  • Pressure:
Operating point
  • Air flow: --
  • Pressure: ---
Files archieve
Brochure "VENTS VUT PB EC" (pdf 1.67Mb)
Download high quality image "VENTS VUT PB EC (ErP 2015, 2016, 2018)" (psd 3.79Mb)
Download image "VENTS VUT PB EC (ErP 2015, 2016, 2018)" for your website (png 265.14Kb)
Software "Setting air handling units with automation A14 and A15" (rar 17.47Mb)
User's manual "Sensor control panel PU SENS 01 A11/A19" (pdf 2.39Mb)
User's manual "VENTS VUT PB EC" (pdf 4.53Mb)
User’s manual "Sensor control panel A14/A15" (pdf 1.16Mb)
User’s manual "Wireless control system A21" (pdf 2.44Mb)
Parameter Value Measurement unit
Additional technical data
Additional technical data
A-weighted sound power level Octave-frequency band [Hz] LpA, 3 m dBA LpA, 1 m dBA
Hz         Gen. 63 125 250 500 1000 2000 4000 8000
LwA to supply inlet dBA 60 46 54 58 50 46 40 40 31    
LwA to supply outlet dBA 63 52 58 60 54 46 40 41 35    
LwA to exhaust inlet dBA 61 47 54 58 50 47 41 41 32    
LwA to exhaust outlet dBA 63 51 58 59 56 46 40 41 35    
LwA environment dBA 55 44 51 51 43 38 32 28 24 34 44

Designation key
Designation key
Series Rated air flow [m3/h] Installation type Bypass Motor type Automation
VENTS VUT 160; 250; 350 P: suspended installation B: bypass EC: synchronous electronically commutated motor A14
Model G4 panel filter F7 panel filter Control panel Control panel with Wi-Fi LCD control panel Indoor humidity sensor Indoor humidity sensor Outdoor CO2 sensor with indication Outdoor CO2 sensor
VUT 160 PB EC A11 SF
403x253x48 G4
403x253x48 F7
- - - HV1 - - -
VUT 160 PB EC A14 - - - - HV2 CO2-1   CO2-2  
VUT 160 PB EC A19 - - - HV1 -
VUT 160 PB EC A21 A22 A22 WiFi   A25 - HV2 
VUT 250 PB EC A11 - HV1 - - -
VUT 250 PB EC A14 - -  -  - HV2 CO2-1   CO2-2  
VUT 250 PB EC A19 - HV1 -
VUT 250 PB EC A21  A22 A22 WiFi  A25 - HV2
VUT 350 PB EC A11 SF
603x253x48 G4
603x253x48 F7
- - - HV1 - - -
VUT 350 PB EC A14 - - - - HV2 CO2-1   CO2-2  
VUT 350 PB EC A19 - - - HV1 -
VUT 350 PB EC A21 A22 A22 WiFi A25 - HV2


Model Outdoor humidity sensor
VOC sensor
(0-10 V)
(0-10 V)
Humidity sensor
(0-10 V)
Electric heater for preheating Electric reheater Hydraulic U-trap Air damper Electric actuator
VUT 160 PB EC A11 - - - - NKP-125 - SH-32 KRV 125 LF230
VUT 160 PB EC A14 HR-S - - - - -
VUT 160 PB EC A19   - - NKP-125 NKD-125
VUT 160 PB EC A21   DPWQ30600  DPWQ40200  DPWС11200  NKP-125 NKD-125
VUT 250 PB EC A11 - - - - NKP-125 -
VUT 250 PB EC A14 HR-S - - - - -
VUT 250 PB EC A19   - - - NKP-125 NKD-125
VUT 250 PB EC A21   DPWQ30600 DPWQ40200  DPWС11200 NKP-125 NKD-125
VUT 350 PB EC A11 - - - - NKP-160 - KRV 160
VUT 350 PB EC A14 HR-S - - - - -
VUT 350 PB EC A19   - - - NKP-160 NKD-160
VUT 350 PB EC A21   DPWQ30600 DPWQ40200 DPWС11200  NKP-160 NKD-160
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