Ventilation units for suspended mounting DVUT PB EC

• 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.

Control

• 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.