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Suspension-mounted single-room air handling unit in a heat- and sound insulated casing.
Air flow up to 510 m³/h. Heat recovery efficiency up to 86 %.

  • Description
  • Characteristics
  • Capacity diagram
  • Downloads
  • Dimensions
  • Additional characteristics
  • Designation key
  • Accessories
  • The DVUT PB EC air handling units are intended for single-room ventilation of schools, offices and other public and commercial spaces.
  • The air handling units do not require a duct system and provide a simple yet efficient ventilation solution for newly built and renovated spaces.
  • Efficient supply and exhaust ventilation of individual spaces.
  • Modification with an electric preheater or reheater available.
  • Low-energy EC motors.
  • Very quiet operation (25-35 dBA).
  • Supply and extract air purification by means of in-built filters.
  • Simple installation.
  • Contemporary design.
  • Warm, stale air passes through the filter and the heat exchanger and is then extracted outdoors through the wall duct by the centrifugal extract fan. Cold outdoor air passes through the filters and the heat exchanger and is then supplied by means of the centrifugal supply fan. This air is warmed up in the heat exchanger, providing fresh air supply into a premise and maintaining comfortable temperature.
  • The casing is made from high-quality polymer-coated steel with internal heat and sound insulation made of mineral wool 30 mm in thickness. The contemporary design helps the units blend in nicely with a wide variety of interiors.
  • Supply and exhaust dampers are closed automatically while the unit is off to prevent drafts.
  • Supply and extract air is purified by means of panel filters. The filtering class depends on standard sizes.

  • The units feature high-performance, electronically commutated (EC) external rotor motors with forward curved blades. These state-of-the-art units offer excellent energy efficiency. In addition to that, EC motors combine high performance and optimum control over the entire speed range. EC motors have an excellent power efficiency (up to 90 %).
  • The DVUT PBE EC and DVUT PBE2 EC units are equipped with an electric preheater to prevent heat exchanger freezing.
  • The DVUT PBE2 EC units are equipped with electric reheaters to raise the supply air temperature.
  • The units are equipped with a bypass for summer ventilation.
  • The DVUT unit features a counter-flow heat exchanger made of polystyrene. In the cold season the heat from the extract air is transferred to the supply air via the heat exchanger which greatly helps reduce ventilation 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 outdoor air heat is transferred to extract air. This enables considerable reduction of the supply air temperature which reduces the air conditioning load.

Freeze protection

  • There are two methods of protecting the heat exchanger against freezing in cold conditions. In units without an electric preheater the supply fan is shut down automatically, using the feedback from the extract air temperature sensor, to let the warm extract air thaw the heat exchanger. The supply fan then re-activates and the unit reverts to normal operation. In units with an electric preheater the supply air is warmed up before entering the heat exchanger which prevents freezing. This method ensures a continuous, balanced air exchange.


  • The units DVUT PB EC A21 are equipped with an in-built control system. An A21 controller allows integrating the unit into the Smart Home system or BMS (Building Management Systems). Remote control panel is not included in the delivery set and is available as specially ordered accessory. The unit is controlled via Wi-Fi by means of the VENTS AHU mobile application that must be downloaded.
Function А21
Wired remote control panel Option (А22)
Wired remote sensor control panel Option (А25)
Wireless remote control panel Option (А22 Wi-Fi)
BMS RS-485
Vents Cloud Server +
Control by a mobile application via Wi-Fi +
Freeze protection +
Bypass Auto + manual
Weekly schedule operation +
Filter maintenance warning According to filter timer
According to pressure switch of filter clogging
Alarm indication +
Speed selection +
Timer +
RH% sensor Option
COsensor Option
VOC sensor Option
PM2.5 sensor Option
Boost mode +
Fireplace mode +
Preheating Option
Reheating Option
Cooler connection Option
Fire alarm sensor Option
Supply air temperature control +
Parameter DVUT 500 P1BE2 EC
Measurement unit
Phase 1 ˜
Voltage 230 V
Maximum unit power 170 W
Frequency 50/60 Hz
Max. unit current with electric heater 18.2 A
Air capacity 510 m³/h
RPM 1700 min-1
Preheater output 1750 W
Reheater output 1750 W
Heat recovery efficiency 74...86 %
Transported air temperature -25 ... +40 °С
Sound pressure level at 1 m distance 34 dBА
Sound pressure level at 3 m distance 24 dBА
Functions Wi-Fi, Filter replacement indication, Timer, Weekly schedule, External sensor connection -
Heating electric preheating, electric reheating -
Remote control panel Sensor Wi-Fi, Sensor -
Casing material painted steel -
Insulation 30 mm, polyester -
Filter: extract G4 -
Filter: supply G4, F8, * F8 + Carbon, * H11 -
Mass 105 kg
Heat exchanger type counter-flow -
Heat exchanger material polystyrene -
SEC Class A -
Duct 250 -
Mounting ceiling mounting -
Capacity diagram
Capacity diagram
  • Selection method:
  • Air flow:
  • Pressure:
Operating point
  • Air flow: --
  • Pressure: ---
Files archieve
Select document type
  • Advertising and printing products
  • Certificates
  • Technical documentation
"Single-room ventilation for schools and public spaces" catalog 2022 (pdf 5.1Mb)
"DVUT PB EC" user's manual 10-2022 (V177EN-05) (pdf 9.76Mb)
Download high quality image "DVUT PB EC" (psd 1.08Mb)
Download image "DVUT PB EC" for your website (png 223.42Kb)
"Wireless control system A21" user’s manual 09-2022 (V55-8EN-04) (pdf 415.1Kb)
Download high quality image "DVUT 1000 PB EC" (psd 3.42Mb)
Download image "DVUT 1000 PB EC" for your website (png 179.36Kb)
"BMS parameter table for PCOS004850 module for DVUT units" user’s manual 07-2020 (V197-1EN-02) (pdf 71.29Kb)
"DVUT 1000 PB EC" user's manual 11-2022 (V177-1EN-03) (pdf 5.97Mb)
Parameter Value Measurement unit
Ø D 250 mm
A 1806 mm
A1 1314 mm
B 1349 mm
H1 462 mm
H 386 mm
Additional characteristics
Additional characteristics

Fresh air stream length

Point Power [W] Sound pressure level at 3 m (1m) [dBA]
1 170 24 (34)
2 153 23 (33)
3 135 23 (33)
4 116 22 (32)
5 95 19 (29)
6 86 19 (29)
7 80 19 (29)
8 68 18 (28)
9 25 13 (23)
10 24 13 (23)
11 24 13 (23)
12 22 13 (23)



Sound power level   Octave frequency bands [Hz] LpA, 3 m dBA LpA, 1 m dBA
  Hz Tot. 63 125 250 500 1000 2000 4000 8000    
LwA to environment at point 1 dBA 44 22 28 38 41 37 33 25 16 24 34
LwA to environment at point 5 dBA 40 18 24 32 32 36 28 29 17 19 29
LwA to environment at point 9 dBA 34 10 17 22 21 33 18 18 17 13 23
Designation key
Designation key
Unit series Rated air flow [m³/h] Installation Bypass Electric heaters Drain pump Motor type Control
DVUT – unit with plastic heat exchanger 300
P – suspended with horizontal spigots

P1 – suspended with vertical spigots
B – bypass damper _ – no heater

E – electric preheater

E2 – electric preheater and reheater
_ – without drain pump

DN – in-built drain pump
ЕС – synchronous motor with electronic control А21
External grille MVMA 200 bVn Al MVMA 250 bVn Al MVMA 315 bVn Al
G4 panel filter SF 270x216x48 G4 SF 325x388x48 G4 SF 480x327x48 G4 2 pcs.
G4 panel filter SF 270x216x48 G4 SF 325x314x48 G4 SF 480x327x48 G4 2 pcs.
F7 panel filter SF 480x327x48 F7 2 pcs.
F8 panel filter SF 270x216x48 F8 SF 325x314x48 F8
F8 panel carbon filter SF 518x270x48 F8 C SF 714x320x48 F8 C
HEPA panel filter SF 518x270x48 H11 SF 714x320x48 H11
VOC sensor (0-10 V) DPWQ30600
CO2 sensor (0-10 V) DPWQ40200
Humidity sensor (0-10V) DPWС11200
External CO2 sensor with indication CO2-1
External CO2 sensor CO2-2
Humidity sensor (NO) HR-S
Humidity sensor HV2
Hydraulic U-trap SG-32
Drain pump DN-2
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