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Centralised ventilation unit for small apartments Uni Max

Centralised ventilation unit for small apartments Uni Max
Decentralized unit for the small offices, facilities, classrooms and living spaces. Air flow: up to 160 m³/h. Heat recovery efficiency: up to 95 %.
Model features
  • ЕС-Motor
  • For round ducts
  • Air handling units with heat recovery
  • Description
  • Modifications
  • Downloads
  • Automation functions
  • Product range
  • Accessories
  • Efficient decentralized ventilation unit for small offices or conference rooms.
  • Visible ceiling suspended installation.
  • A version with electrical preheater is available for cold climate.
  • Clean air due to the use of an ePM1 70% / F7 filter for supply air filtration.
  • Possibility to connect fresh air inlet and exhaust air ducts at top or back side of the unit.
  • Low noise operation from 16 dB(A) at 3m.
  • High level of comfort due to builtin bypass and air dampers.
  • The casing is made of galvanized sheet metal with white painted decorative cover.
  • The contemporary design of the Uni Max unit will seamlessly blend into any interior.
  • The unit is heat- and sound-insulated with a 20 mm layer of foam.
  • The service panel is easy to open for filter maintenance.
  • The unit is equipped with two Ø125 mm spigots for fresh air intake and stale air exhaust.
  • The position of the spigots can be changed from horizontal to vertical.
  • The Uni Max E S21 units are equipped with an electrical preheater to prevent heat exchanger freezing in the cold climate.
  • The Uni Max units are equipped with a bypass for summer cooling by the cool air from outside.
  • The Uni Max unit is equipped with two automatic air dampers, which close automatically when the unit is off to prevent drafts.
  • The Uni Max unit is equipped with a plate counter-flow polystyrene heat exchanger for heat recovery. The unit condensate is collected and drained to the drain pan under the heat exchanger.
  • The Uni Max E unit is equipped with an enthalpy plate counter-flow heat exchanger for energy (heat and humidity) recovery. Due to humidity recovery condensate is not generated in the enthalpy heat exchanger.
  • The air flows are completely separated in the heat exchanger. Thus smells and contaminants are not transferred from the extract air to the supply air.
  • Heat recovery is based on heat and/or humidity transfer through the heat exchanger plates.
  • In the cold season supply air is heated in the heat exchanger by transferring the heat energy of warm and humid extract air to the cold fresh air. Heat recovery minimizes ventilation heat losses and heating costs respectively.
  • In the warm season the heat exchanger performs reverse and intake air is cooled in the heat exchanger by the cool extract air.That reduces operation load on air conditioners and saves electricity.
  • 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 Uni Max А21 units are equipped with an integrated automation system. The remote control panel is not included in the delivery set (sold separately).
  • The А21 controller allows integrating the unit into the Smart Home system or BMS (Building Management System).
  • Unit control via Wi-Fi using the mobile application Vents AHU. The Uni Max А14 units are equipped with an integrated automation system and the А14 wall mounted sensor control panel with LED-indication.
Download the
Vents AHU app
for Android
Download the
Vents AHU app
for iOS
Select document type
  • Advertising and printing products
  • Certificates
  • Technical documentation
"Air handling unit with heat recovery UNI" catalog 2023 (pdf 2.17Mb)
"VENTS Uni (Max)" user's manual 04-2023 (V231EN-01) (pdf 2.57Mb)
"VENTS Uni Max" product description 02-2023 (pdf 1.53Mb)
Download high quality image "VENTS Uni Max" (psd 1.02Mb)
Download image "VENTS Uni Max" for your website (png 203.14Kb)
Automation functions
Automation functions


Uni Max A21 Uni Max A14
Unit control via Wi-Fi using a mobile application +
Unit control via a wired remote control panel
A22 control panel (option)
A14 control panel
Unit control via a wireless remote control panel
A22 Wi-Fi control panel (option)
Unit control via a remote wired LCD control panel
A25 control panel (option)
BMS (Building Management System) RS-485
Speed selection + +
Filter replacement indication by filter timer by filter timer
Alarm indication full alarm description in the mobile application +
Week-scheduled operation +
Bypass automatic manual
Timer +
Boost mode +
Fireplace mode +
Freeze protection through cyclic stops of the supply fan through cyclic stops of the supply fan
through preheating (option)
Reheater connection option
Cooler connection option
Minimum supply air temperature control option
Humidity control option option
CO2 control option option
VOC control option option
PM2.5 control option option
Fire alarm sensor connection option
Product range
Product range
  Heat exchanger Air dampers Preheater Bypass
Uni Max S14 HRV  
Uni Max S21  
Uni Max E S21
Uni Max ERV S14 ERV  
Uni Max ERV S21  
Uni Max E ERV S21
    Uni Max S14
Uni Max ERV S14
Uni Max S21
Uni Max E S21
Uni Max ERV S21
Uni Max E ERV S21
Coarse 90% / G4 panel filter SF 233x175x22 Coarse 90% / G4
ePM1 70% / F7 panel filter SF 233x175x22 ePM1 70% / F7
Control panel - A22
Wireless control panel - A22 Wi-Fi
LCD control panel - A25
Humidity sensor HV2
Humidity sensor HR-S
Humidity sensor - DPWC11200
CO₂ sensor with indication CO2-1
CO₂ sensor CO2-2
CO₂ sensor CO2-3
CO₂ sensor - DPWQ40200
VOC sensor - DPWQ30600
Electric reheater NKD 125 A21 V.2 series
Outer grille MVMA 125 bVn Al
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