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Single-room air handling units DVUT HB EC and DVUE HB EC

  • Description
  • Modifications
  • Capacity diagram
  • Downloads
  • Designation key
  • Accessories
Description
Description
DESCRIPTION  
  • The DVUT HB EC and DVUE HB EC air handling units are intended for single-room ventilation of schools, offices and other public and commercial spaces.
  • These air handling units do not require a duct system and provide a simple yet efficient ventilation solution for newly built and renovated spaces.
FEATURES  
  • Efficient supply and exhaust ventilation of individual spaces.
  • Modification with an electric preheater or reheater available.
  • Modification with an enthalpy membrane heat exchanger available.
  • Low-energy EC fans.
  • Low noise operation (25-35 dBA).
  • Supply air purification by means of two built-in G4 and F8 filters with the option of carbon or HEPA filters.
  • Simple installation.
  • Contemporary design.
DESIGN  

Casing

  • The casing is made from high-quality polymer-coated steel with internal heat and sound insulation made of mineral wool 40 to 80 mm in thickness.
  • The contemporary design helps the units blend in nicely with a wide variety of interiors.

Air dampers

  • Supply and exhaust dampers are closed automatically while the unit is off to prevent drafts.

Air filtration

  • Supply air purification is provided by G4 and F8 panel filters (PM2.5 > 75 %). To meet more stringent air quality requirements the unit can be upgraded with carbon F8 filter and H11 filter (PM2.5 > 95 %) (purchased separately).
  • Extract air is purified by a panel G4 filter.

Fans

  • 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 %).

Preheating

  • The DVUT HBE EC and DVUT HBE2 EC units are equipped with an electric preheater to prevent heat exchanger freezing.

Reheating

  • The DVUT HBE2 EC units are equipped with electric reheaters to raise the supply air temperature.

Bypass

  • The units are equipped with a summer bypass function.

Heat exchanger

  • The DVUT units feature a counter-flow heat exchanger made of polystyrene.
  • 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 warm weather, the unit can either be used in its summer bypass mode (fresh intake air is directly supplied to the room, bypassing the heat exchanger and not coming in contact with warm extract air) or, if air conditioning is being used, the extract air will cool the heat exchanger and bring fresh air at the same temperature as the air-conditioned air that is being extracted.

 

  • The DVUE units are equipped with a counter-flow enthalpy heat exchanger.
  • In the cold season the extract air heat and moisture are transferred to the supply air stream through the enthalpy. Heat recovery minimises heat losses from ventilation.
  • In warm weather, the unit can either be used in its summer bypass mode (fresh intake air is directly supplied to the room, bypassing the heat exchanger and not coming in contact with warm extract air) or, if air conditioning is being used, the extract air will cool the heat exchanger and bring fresh air at the same temperature as the air-conditioned air that is being extracted.

 

   
OPERATING PRINCIPLE  
  • 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. The heat from this extracted air is transferred to the heat exchanger.
  • Cold outdoor air passes through the filters and the heat exchanger and then is supplied by means of the centrifugal supply fan. This air is warmed by the heat exchanger allowing the supply of fresh air whilst maintaining the areas temperature.

 

UNIT CONTROL AND OPERATION

 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.

 Control

  • The units may have a built-in or remote control panel.
  • There are three types of control panels available.
Function А14 А17 А18
Image
Built-in control panel + + +
Remote control panel + + +
Preheating - + +
Reheating - + +
Humidity sensor
СО2 sensor
 Functions      
RS-485 MODBUS (RTU, TCP) -
Speed setting in the 0 to 100 % range + + +
Bypass control Manual Automatic Automatic
Filter maintenance warning + + +
Alarm indication + + +
Timer operation - + +
Weekly schedule operation - + +
Supply air temperature setting - + +

+ – Available; – Optional; - – Not available.

Capacity diagram
Capacity diagram
  • Selection method:
  • Air flow:
  • Pressure:
Operating point
  • Air flow: --
  • Pressure: ---
Downloads
Downloads
Name
Software "Setting air handling units with automation A14 and A15" (rar 17.47Mb)
Catalogue "Single-room ventilation for schools and public spaces" (pdf 8.96Mb)
Download high quality image "DVUT HB EC and DVUE HB EC" (psd 1.25Mb)
Download image "DVUT HB EC and DVUE HB EC" for your website (png 254.31Kb)
User's manual "Automatic control systems for AHU th-Tune (A17) and pGD1 (A18)" (pdf 6.32Mb)
User's manual "DVUT HB EC and DVUE HB EC" (pdf 5.35Mb)
Designation key
Designation key
Unit series Rate air capacity [m3/h] Installation Bypass Electric heaters Motor type Control Control panel placement

DVUT – single-room heat recovery ventilation

DVUE – signle-room energy recovery ventilation

300; 500 H – floor-mounted with horizontal spigots B – bypass damper _ – no heater

E – electric preheater

E2 – electric preheater and reheater
ЕС – synchronous motor with electronic control А14 – sensor control panel

А17 – th-Tune control panel with an LCD screen

А18 – pGD1 control panel with an LCD screen
_ – remote-position control panel

1 – built-in control panel
Accessories
Accessories
Name Image DVUT 300 HB EC A14 DVUT 500 HB EC A14 DVUT 300 HB EC A17/18 DVUT 500 HB EC A17/18
Outer ventilation hood made of white coated steel NB DVUT 300 HB white NB DVUT 500 HB white NB DVUT 300 HB white NB DVUT 500 HB white
Outer ventilation hood made of brushed stainless steel NB DVUT 300 HB chrome NB DVUT 500 HB chrome NB DVUT 300 HB chrome NB DVUT 500 HB chrome
G4 panel filter SF 265x213x48 G4 SF 318x290x22 G4 SF 265x213x48 G4 SF 290x318x22 G4
G4 panel filter SF 308x238x22 G4 PPI SF 450x257x27 G4 PPI SF 308x238x22 G4 PPI SF 450x257x27 G4 PPI
F8 cassette carbon filter SF 533x135x48 F8 C SF 666x196x48 F8 C SF 533x135x60 F8 C SF 666x196x48 F8 C
F8 panel filter SF 384x273x60 F8 SF 318x290x60 F8 SF 384x273x60 F8 SF 318x290x60 F8
HEPA panel filter SF 533x135x60 H11 SF 666x196x60 H11 SF 533x135x60 H11 SF 666x196x60 H11
Module Modbus-RS485 PCOS004850 PCOS004850
VOC sensor (0-10V) DPWQ30600
СО2 sensor (0-10V) DPWQ40200
Humidity sensor (0-10V) DPWС11200
Humidity sensor (NO) HR-S
Humidity sensor HV2
Hydraulic U-trap SG-32
Bundled drain pump DN-2
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