Duplexvent Flexi DV3600
Duplexvent Flexi DV3600 is designed for the energy efficient, comfort ventilation of schools, restaurants, sports halls, shops and offices as the unit has a powerful air delivery with low energy consumption and exceptionally high thermal efficiency. With a range of control options including Internet and BMS compatibility for "On Demand" ventilation the unit also incorporates an automatic, 100% summer by-pass to isolate the heat recovery function during the hotter months.
Unique to Duplexvent Flexi Range is the ability to position the unit on the floor or in a ceiling suspended configuration. This versatile design also allows the unit to be installed as either a left or right hand version. This provides exceptional flexibility for designers in the specification phase and gives contractors the opportunity to locate the unit in the optimum position.
Significant advantages for specifiers to consider as part of a buildings BREEAM assessment and also for larger Passive House developments. Similarly HVAC distributors benefit from a range of "off the shelf" air handling units which can be quickly adapted to fit on-site. No more bespoke orders with long lead times!
Mechanical ventilation with heat recovery is an important component in creating a healthier living and working environment while contributing to the overall reduction of a building’s carbon emissions whilst increasing energy savings through the reduction of heating costs.
KEY FEATURES:
- Extracts up to 3800 m3/h (1.05 m3/s) at 200 Pa
- Excellent heat recovery efficiency more than 90%
- Compact design and high flexibility in unit positioning
- Off the shelf delivery
- Passivhaus Institute certification
- 2 year warranty*
APPLICATIONS:
- Offices and shops
- Schools and nurseries
- Sport halls
- Restaurants
MAIN FEATURES:
- Large plastic cross-counter flow heat exchanger with high efficiency more than 90%
- Energy saving, maintenance-free EC fans with low SFP and constant air flow volume control
- Compact unit - universally usable as horizontal or ceiling mounted, outside air intake right or left
- Easy maintenance through large access doors where filters, heat exchanger and fans can be easily removed
- Automatic, temperature controlled summer bypass, where the heat exchanger is covered 100%
- Frost protection via reduction of air flow volume of the supply air fan
- Supply air filter ePM1 55% (F7) and exhaust air filter ePM10 50% (F5) as standard. Filter monitoring via differential pressure. - ISO 16890 compliant
- Electronic 10-step digital controller with LCD display
- User control via internet connection
- Optional sensors (humidity, air quality, CO2) are available for on demand ventilation
- Shut-off dampers and flexible connectors are available as accessory
- Fulfills VDI 6022 hygiene standard
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4 upgrade packs available:
1. Passivhaus pack (Electric preheater and constant pressure control for Passivhaus compliance)
2. Comfort pack 1 (Warm water after heater including hydraulic set for specific applications)
3. Comfort pack 2 (Chioce of cold water or direct expansion (DX) cooler including hydraulic set for extra cooling)
4. VDI 6022 hygiene pack (Inclined tube manometers to maintain the certified hygiene standard)
DIMENSIONS:
- H 1660mm x L 2450mm x W 780mm
- Spigot connection: 600mm x 300mm
- Weight: 380 kg
* Excluding motors. Motor warranty is one year from date of purchase.
CONSULTANT SPECIFICATION
UNIT SPECIFICATON - DUPLEXVENT FLEXI DV3600
The mechanical ventilation with heat recovery unit shall be the Duplexvent Flexi DV3600 as manufactured by Airflow, shall be sized as indicated on the drawings and shall be in accordance with the specification.
Compact central ventilation unit with heat recovery, certified by the German Institute Passivhaus. The unit can be installed both in floor-standing and ceiling-suspended positions. Moreover, the direction of air flow can be configured upon commissioning of the unit.
As standard, the unit is equipped with a control system featuring a 100% automatic summer bypass damper, bypassing the heat recovery core to avoid dwelling overheating. All other accessories are delivered as loose along with the unit and installed on site.
The unit casing consists of frameless construction with sandwich panels, manufactured without thermal bridges. Sandwich-mounted panels create a 30mm thick casing, containing the following layers, from outside to inside: • Outer layer from painted metal sheet. Colour: grey aluminium (RAL 9007), thickness 0,8 mm • Polyurethane insulation • Inner layer made of galvanised metal sheet, thickness 0,8 mm
Casing characteristics according to DIN EN 1886: - Mechanical stability: D1 - Casing leakage: L2 (Compliant with Approved Document Part L, Volume 2, Conservation of fuel and power, Buildings other than dwellings) - Thermal transmittance: T2 - Thermal bridges class: TB1
Class of building material according to DIN EN 13501: B-s1-d0 Condensate drain pan made of stainless steel (316L) In the condensate drain pan, there is one condensate drain, the necessary water trap is to be provided by the installer. 2-part service door on clips allow free access to all built-in components, heat recovery core, filter guide rails, fans etc. Each unit goes through a final thorough check and functionality test prior to being dispatched.
The unit shall be Duplexvent Flexi DV3600 as manufactured by Airflow.
Delivery and placement in final installation position: The unit is delivered as one piece. It is not possible to divide the unit into more parts on site. To be positioned safely, the unit rests on 4 stand feet having the height of 150 mm. Dimensions of unit casing (excluding additional construction elements): Length: 2450 mm Height: 1660mm Width: 780 mm Weight: 380kg (incl. accessories)
KEY FEATURES
- Extracts up to 3800 m3/h (1.05 m3/s) at 200 Pa
- Excellent heat recovery efficiency more than 90%
- Compact design and high flexibility in unit positioning
- Off the shelf delivery
- Passivhaus Institute certified
- 2 year warranty* *Excluding motors. Motor warranty is one year from date of purchase.
COMPONENTS
In order to switch off the electrical power supply, e.g.. during service works, the service power switch is located next to the terminal board. Built-in sensors: Outdoor temperature sensor: ADS TEa Supply air temperature sensor: ADS TU1 Extracted air temperature sensor: ADS TEb Exhausted air temperature sensor: ADS TU2 Pressure switch of supply air filter: 0 - 500 Pa (on / off) Pressure switch of exhaust air filter: 0 - 500 Pa (on / off)
Outdoor air filter: Type of filter: ePM1 55% (F7) pleated cartridge Dimensions: 690x690x96 mm Number: 1 pcs
Extracted air filter: Type of filter: ePM10 50% (M5) pleated cartridge Dimensions: 690x690x96 mm Number: 1 pcs All filters are ISO 16890 compliant.
100% automatic summer bypass damper: A bypass damper is fitted in the ventilation unit as standard and designed to bypass the heat exchanger during hot seasons to avoid overheating in the ventilated premises. In addition, the damper can also be used for night pre-cooling. Moreover, the summer bypass can be used to prevent the plate heat exchanger from freezing (defrosting using bypass). If required, an option of intelligent cool recovery is also available. Frame made of zinc-coated metal (class 10, thickness 1 mm), flap with tight-closing Aluminium blinds.
Heat recovery feature: Wide-area counterflow plate heat exchanger from highimpact polystyrene (hPS) provides high efficiency of heat recovery and it is resistant against corrosion to a high extent. Furthermore, it is chemically stable when in contact with extracted air that is polluted from a wide range of applications. The exchanger is resistant against impurities, and it can be operated in the temperature range from -25°C to +80°C. It features class H1 according to DIN 13779.
Supply /Exhaust fan: EC-fan with stepless control with backward curved blades. - Voltage: 400 V/ 50 Hz - IP class: IP 54
CONTROL SYSTEM: DIGITAL CONTROL SYSTEM RD5
Main controller RD5 400V-EC / 400V-EC (3600) for control and communication with following built-in or external components: - Turning the device ON and OFF - Independent, stepless control of both fans - Integrated time plan with daily and weekly schedule - Selectable control based on supply air temperature / extracted air temperature / room temperature - Hysteresis of heating / cooling - Night precooling - Control of preheater (electrical, water) and/or heater (water, electrical, direct cooler in reverse mode) - Control of cooler (water, direct cooler) - Control of heat pump - Monitoring of filter clogging * - Antifreeze protection of hot water heating coil - Antifreeze protection of plate heat exchanger - Stepless control of bypass damper position, automatic control of heat recovery and cool recovery - Defrosting of heat exchanger using its bypass - Control of shut-off dampers - Stepless control based on demand for ventilation using 2 analogue inputs 0-10 V (e.g. sensor, converter of measured pressure or analogue signal) - Ventilation on constant flow * - 3 (4) programmable inputs (configurable delay of start or run-down) - 3 outputs (optional assignment) - Contact allowing external operation (ON/OFF) - Emergency STOP contact (e.g. fire sensor, smoke detector) - Multi-purpose output for error message (based on potential 24V / GND) - Possibility of connecting remote administration - Integrated data logging with the possibility of email messaging (various kinds of events can be sent to selected recipients) - simple software update via the internet * An accessory is required to enable this feature
Web server (password-protected) : Integrated web server enables control and monitoring of ventilation unit via LAN/internet. It makes reading of operational data easy and provides for comfortable control of the unit as all items are sorted in the menu (e.g. weekly schedule, temperature, mode of operation, etc.). Remote access via PC, notebook, tablet or smartphone.
ModBus interface is included as standard, it mediates communication with local supervising control system (BMS).
CP TOUCH CONTROLLER
The white CP touch controller, is intuitive, user-friendly with a touch screen and integrated room-temperature sensor, to be mounted on the wall. The user can set up and control all control system functions and display operational parameters of the unit, its alerts, and errors. An intuitive user interface, as well as a service menu protected by password, are available as standard with the controller. Users can access all commonly needed functions and select operational parameters; these can be chosen in manual/automatic mode.
Files
- Commercial Catalogue MVHR Specification
- CP Touch Controller Instructions
- Duplexvent Flexi DV3600 BIM File
- Duplexvent Flexi DV3600 Consultant Specification
- Duplexvent Flexi DV3600 Data Sheet
- Duplexvent Flexi DV650-DV3600 Passive House Certificate
- Duplexvent Flexi Instructions
- Duplexvent Flexi Range Filter Maintenance Guide
