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Single-room air handling units DVUT PB EC

  • Description
  • Modifications
  • Capacity diagram
  • Downloads
  • Designation key
  • Accessories
Description
Description
DESCRIPTION  
  • 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.
FEATURES  
  • Efficient supply and exhaust ventilation of individual spaces.
  • Modification with an electric preheater or reheater available.
  • Low-energy EC fans.
  • Very quiet 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 PBE EC and DVUT PBE2 EC units are equipped with an electric pre-heater to prevent heat exchanger freezing.

Reheating

  • The DVUT PBE2 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 aluminium.
  • 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.
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 AUTOMATION

 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 have a remote control panel.
  • There are two types of control panels available.
Function А17 А18
Image
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 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
Catalogue "Single-room ventilation for schools and public spaces" (pdf 8.96Mb)
User's manual "DVUT PB EC" (pdf 16.14Mb)
Download high quality image "DVUT PB EC" (psd 1.08Mb)
Download image "DVUT PB EC" for your website (png 223.42Kb)
User's manual "Automatic control systems for AHU th-Tune (A17) and pGD1 (A18)" (pdf 6.32Mb)
Designation key
Designation key
Unit series Rate air capacity [m3/h] Installation Bypass Electric heaters Motor type Control

DVUT – single-room heat recovery ventilation

300; 500 P – suspended with horizontal spigots B – bypass damper _ – no heater

E – electric preheater

E2 – electric preheater and reheater
ЕС – synchronous motor with electronic control А17 – th-Tune control panel with an LCD screen

А18 – pGD1 control panel with an LCD screen
Accessories
Accessories
Name Image DVUT 300 PB/PBE/PBE2 EC DVUT 500 PB/PBE/PBE2 EC
G4 panel filter SF 270x216x48 G4 SF 325x388x48 G4
F8 panel filter SF 270x218x48 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
Module Modbus-RS485 PCOS004850
VOC sensor (0-10V) DPWQ30600
СОsensor (0-10V) DPWQ40200
Humidity sensor (0-10V) DPWС11200
Humidity sensor (NO) HR-S
Humidity sensor HV-2
Hydraulic U-trap SG-32
Drain pump DN-2
External grille MVMA 200 bVn Al MVMA 250 bVn Al
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