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Air Handling Units & Heat Recovery Units

VUT - Flat - EC

VUT - Flat HRU - EC Motors

Description

Air handling units VUT PE EC with the electric heater are the complete ventilation units designed to provide both both supply and exhaust ventilation with air filtration and extract air removal. The exhaust air energy is used to heat up the supply fresh air through the plate heat exchanger.

Designed for ventilation and conditioning systems for various premises requiring economic solution and controllable air exchange. EC-motors reduce energy consumption by 1.5-3 times and ensure high efficiency and low noise level at the same time. All the models are compatible with 160 (150), 200, 250, 315 and 400 mm round ducts.

Modifications

VUT PE EC – models with the electric heater.

Casing

The casing is made of aluzink with 20 mm mineral wool internal heat and sound-insulating layer for VUT PE 350, 600, 1000 units and 50 mm for VUT PE 200, 3000 units.

Filter

Two incorporated G4 panel filters for supply and extract air ventilation are supplied with the unit.

Motor

VUT PE EC units are equipped with exhaust and supply fans with backward curved blades powered by energy-saving direct current Electronically Commutated (EC) motors. These motors give up to 50% energy consumption economy as compared to standard AC motors. EC motors have built-in thermal overheating protection with automatic restart and enable smooth speed regulation from 0 to 100%. The ball bearings used with the EC motors are designed for at least 40 000 hours operation and are maintenance-free. Premium efficiency reaching 90% is an absolute privilege of the electronically commutated motor.

Heat exchanger

VUT 350, 600 and 1000 models are fitted with the counter-flow heat recovery element made of polystyrene. VUT 2000 and 3000 models are manufactured with the cross-flow air-to-air plate heat exchanger made of aluminum. All the units are equipped with the drain pan for condensate drainage.

Heater

The units are supplied with the electric heater. If the external temperature is too low and/or heat energy transfer from the exhaust air is insufficient to heat up the supply air to the required temperature, the heater is turned automatically on. The control system regulates the heating power to keep the indoor temperature as set up by the user.

Automation

The unit is equipped with the built-in automation system with multifunctional control panel and graphic LCD indicator. The standard delivery set includes 10 m wire for connection to the control panel. To prevent the heat exchanger freezing the icing electronic protection is applied. It includes the by-pass damper and the heater. The by-pass damper is opened as the temperature sensor requires to let the air flow pass through the heat exchanger through the by-pass duct. During the heat exchanger defrost cycle the supply air is warmed up in the heater up to the required temperature. During the defrosting process the warm exhaust air warms the heat exchanger. After that the by-pass damper closes again, the heater is switched off, supply air warms up again through the heat exchanger and the unit continues operating under rated conditions.

VUT PE EC control and protection functions

Air handling unit is equipped with the remote control panel that provides: