CONTENT: VEX308 Decentralised ventilation VEX308

CONTENT: VEX308 Decentralised ventilation VEX308

VEX308 Decentralised ventilation Download all product data on VEX308 General VEX308 - decentralised ventilation for schools, institutions and offices A decentralised air handling unit is a simple solution, easy and manageable for everyone. The simple installation means no need to fit ventilation ducts, etc. In addition, units can be installed on an on-going basis in accordance with needs and budgets. VEX308 ensures: - Fast and inexpensive installation - High temperature efficiency - Simple operation, factory-set - Central monitoring of units - Ensures constant fresh indoor climate with filtered air 18.10.2017 01/19

Semi-integrated installation Installation in suspended ceilings VEX308 can also be ordered in a design intended for semi-integrated installation in a suspended ceiling. This ensures a compact and very discrete installation. 18.10.2017 02/19

Design your own unit Design the VEX308 to match your interior design The VEX308 is supplied as standard in white-lacquered decorative panels, with doors and a decorative band but is also available in other versions. The VEX308 can be ordered with decorative panels in white, Aluzinc or coke-grey and with a decorative band in seven different colours. 18.10.2017 03/19

Package solutions Package solutions for optimal operation and low-energy consumption The VEX308 can be factory-set for on-demand operation, adjusted to match the load in a given room. Because there is no control panel in the room there is no risk of a student or member of staff setting the unit to operate incorrectly. Package solution for standard rooms - e.g. classroom, meeting room or office. The PIR sensor starts the unit when motion is detected in the room. The built-in CO 2 sensor regulates the ventilation in accordance with the CO 2 level in the room. Built-in PIR sensor Info LED status light Built-in CO 2 sensor Factory-set operation Package solution for rooms with humidity demands - e.g. changing room, exercise room or toilet. The PIR sensor starts the unit when motion is detected in the room. The built-in RH sensor regulates ventilation in accordance with the relative humidity in the room. Built-in PIR sensor Info LED status light Built-in RH sensor Factory-set operation 18.10.2017 04/19

Positioning One unit - two installation options The VEX308 is supplied with spigots fitted on the rear of the unit for a wall installation, unless otherwise agreed. If a ceiling installation is more suitable, the spigots are simply moved to the top of the unit. This is done by swapping the spigots with the cover panels on the top. At the same time, the exhaust ventilation is turned and if required, a motor damper is fitted in the exhaust. Positioning of VEX308 When planning a VEX308 solution, the shape of the room is taken into consideration to achieve the optimal positioning of the unit. In rooms with a square ground plan with walls that are almost equal in length, the VEX308 can be freely positioned, as close as possible to the middle of a wall. In small rooms, the unit should not be positioned on the longer sides to ensure good circulation and ventilated air. 18.10.2017 05/19

Design VEX308 design The strong cabinet is made from Aluzinc AZ185 class C4. The sound-proofing insulation means the unit is ultra quiet and it is ideal for installation in all types of rooms. The extremely efficient counter flow heat exchangers with high temperature efficiency ensure excellent indoor climate and low energy consumption. Energy-saving EC motors and the excellent EXact control system means the unit does not require a lot of electricity. Principle diagram, VEX308 with water heating coil (HCW) 18.10.2017 06/19

Unique frost protection VEX308 with de-icing bypass High-efficiency counter flow heat exchangers can suffer icing if the air is humid and outdoor temperatures are below freezing. This problem is solved with the VEX308. If there is a risk of icing, then a certain amount of outdoor air will bypass the heat exchanger and go directly to the after heating coil, So naturally, we recommend an after heating coil is fitted. De-icing bypass functions in the following ways: In normal operation, air is directed through the heat exchangers (VEX308 seem from below). In de-icing bypass mode, some of the air is directed past the heat exchangers via a bypass in the centre of the unit and thus icing of the heat exchangers is avoided (VEX308 seen from below). 18.10.2017 07/19

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Control system Control ventilation with EXact2 Web sever monitoring The VEX308 is supplied with the EXact2 control system A Web server solution can be connected to this control system, which means several units can be monitored from a central location, e.g. the caretaker's office. This means you can have a full overview of the units' operation. The Web server solution also provides more control function options. Learn more about the EXact2 control system here. Control using HMI control panel The pre-programmed EXact2 control system provides VEX308 with its full functionality. A separate HMI control panel can be ordered, and is connected to the VEX308 with a service cable. The HMI control panel allows unit operation to be monitored and further adjustments can be made. One control panel can be used for several VEX308 units. 18.10.2017 09/19

Ecodesign Ecodesign - EU requirements for documentation, energy consumption and labelling of ventilation units. General information We have made a compilation of extracts from the Ecodesign guidelines, read more about Ecodesign under Institute. Ecodesign data You will find links to Ecodesign data for the individual VEX sizes under the product name and under Download, where we have located Ecodesign data under EU/ECO declarations. NB: We would point out that the values stated in the declarations have been calculated for a specific operating point. If a different operating point is desired, we would refer you to our calculation programs - here you can see whether the desired unit meets the requirements for your operating point and find the associated Ecodesign data. 18.10.2017 10/19

VEX308 Technical data VEX308 Unit data Min. airflow Max. airflow - standard air handling unit - semi-integrated air handling unit Power consumption with and without water heating coil Power consumption with electric heating coil Maximum fuse rating Power supply Max. leak current Weight incl. water heating coil HW308SE - standard air handling unit - semi-integrated air handling unit Connection to duct system HW, pipe connection Modulating bypass Filter class extract air Filter class supply air 150 m3/h 850 m3/h 800 m3/h 2.5 A - 575 W 12.9 A - 2,975 W 16 A 1 x 230 V + N + PE ~ 50 Hz 6 ma 185 kg 203 kg ø315 mm 2 x DN15 (½") Yes M5 F7 18.10.2017 11/19

Capacity curves VEX308 1. Standard air handling unit 2. Semi-integrated air handling unit Assumptions for capacity diagram: Pressure drop across device of 45 Pa at 850 m 3 /h. Power consumption with VEX: P 1 [W] = SFP [J/m 3 ] x q v [m 3 /s]. To calculate with your assumptions please see our product calculation program VEX308-Selector. 18.10.2017 12/19

Temperature efficiency VEX308 Efficiency with condensation: Extract air = 20 C/55 RH - Outdoor air = -10 C/50 RH. Balance between supply air/extract air = 1.0 Efficiency without condensation with imbalance: Extract air = 25 C/28 RH - Outdoor air = 5 C/50 RH Balance between supply air/extract air = 0.8 Efficiency without condensation in acc. with EN308: Extract air = 25 C/28 RH - Outdoor air = 5 C/50 RH Balance between supply air/extract air = 1.0 The temperature efficiency of the VEX units are shown at different airflow ratios, calculated as: Supply air Extract air = 0.8 and 1.0 18.10.2017 13/19

Sound data VEX308 Assumptions for sound measurements: Lp(A)ref = Sound level in reference room with reverberation time T = 0.6 s. To calculate sound data use the product calculation program VEX308-Selector. 18.10.2017 14/19

Dimensional drawing VEX308 Standard air handling unit Semi-integrated air handling unit Space requirements To allow for proper functioning and servicing of the VEX308 there must be a free area around the unit. The VEX308 unit must not be placed closer than 500 mm to walls or fittings on any side, and there must be 850 mm clearance beneath the unit to allow room for servicing. When installing a semi-integrated unit, please ensure that there is free access to the control box 18.10.2017 15/19

Accessories VEX308 You can order a ready-to-use package, but the VEX308 can also be configured for your specific project needs. Contact EXHAUSTO for preferences not mentioned here. Item no. HW308SE HW308LE HE308SE CONPUMP LSR308 LS31524 YGC315ALU Description Built-in water heating coil, SMALL, incl. MVM motor valve and LSR308 closing damper Built-in water heating coil, LARGE, incl. MVM motor valve and LSR308 closing damper Built-in electric heating coil, SMALL 2.4 kw Condensate pump Closing damper with spring return (required for water heating coil) Closing damper (ø315 mm) for use with vertical exhaust Outer wall grille ø315 mm) made from aluminium 18.10.2017 16/19

Air speed VEX308 The drawing shows the air speed has fallen to approx. 0.2 m/s (L 0.2 ) with different airflows. 18.10.2017 17/19

PIR sensor VEX308 The drawing shows the PIR sensor range. 18.10.2017 18/19

EXHAUSTO, Export Odensevej 76 DK-5555 Langeskov UK: Complete Ventilation Solutions Ltd. 42 Canterbury Park Allerton Liverpool, L18 9XP