Vallox BlueSky cover for air distribution box 75 mm
Vallox BlueSky cover for air distribution box 75 mm
In air distribution boxes with 10 and 15 outlets, the outlet collars are placed at the ends of the distribution box or on top of it. Openings that are not needed are closed with the cover.
Air distribution boxes with 10 outlets are delivered with 10 outlet collars and 10 covers. Correspondingly, air distribution boxes with 15 outlets are delivered with 15 outlet collars and 15 covers. If you require more covers, you may order them separately as an accessory.
Which ventilation duct material is the right choice?
For ventilation ducts, you can choose between various steel duct solutions or plastic-based systems, such as the Vallox BlueSky ventilation system. The choice depends on factors such as the building structure and the available installation space for the ductwork.
BlueSky is an environmentally friendly choice, as it does not generate offcuts and waste pieces in the same way as other duct materials.
Is a plastic ventilation duct fire-safe?
The fire safety of the Vallox BlueSky system has been verified by a VTT research report.
When installing the BlueSky system inside P3-class buildings, the ducts must be enclosed with a material rated at least D-s2, d2, or covered with mineral wool insulation.
Which ventilation system is suitable for a confined installation space?
The Vallox BlueSky air distribution system is suitable even for confined installation spaces, such as low suspended ceilings. It can be installed easily inside partition walls, intermediate floors, suspended ceilings, enclosures, or concrete structures.
How to select a duct size?
In detached houses, the typical duct diameter is 160-200 mm. In the Vallox BlueSky system, however, air is carried in a large duct only as far as the distribution box. From there, an individual flexible 75 mm duct is routed to each air valve.
For airflow rates exceeding 8 dm³/s per valve, the use of two ducts in parallel is recommended. Using two smaller ducts makes the ductwork easier to install in confined spaces.
The use of one or two ducts also makes airflow measurement easier. Therefore, it is advisable to create the ventilation design specifically for the BlueSky system in order to take full advantage of its benefits.
Are silencers required in the ductwork?
Yes, silencers should generally be installed in all ventilation duct systems. In a BlueSky duct system, the silencers are installed between the ventilation unit and the distribution boxes.
Can the sound insulation of ventilation ductwork be improved afterwards?
The sound insulation of ventilation ductwork should be inspected regularly for possible damage, wear, and loose seals. Seals and insulation materials used for sound insulation may deteriorate or become damaged over time, reducing their effectiveness. Condensation water can also damage insulation materials if the drainage system is not functioning properly.
The repair and replacement of sound insulation is generally the responsibility of a professional.
Which duct system is suitable for a renovation project?
The Vallox BlueSky ventilation duct system is particularly well suited for renovation projects. Thanks to its design features, the ductwork can be installed even in confined spaces, and the ducts are flexible, making them quick to position and easy to measure in renovation applications.
Can the duct system be modified afterwards?
The Vallox BlueSky ventilation duct system is easy to modify after installation, as the ducting is flexible and can be easily disconnected from the distribution box.
How do I design and size a ventilation duct system?
Vallox offers a calculator for estimating the material requirements of a Vallox BlueSky ventilation system, allowing you to quickly and easily determine the quantity of system components needed for your project.
In addition, Vallox customer service and technical support are available on weekdays to assist with planning and sizing questions.
How are ventilation ducts insulated?
The Vallox BlueSky ventilation duct does not require insulation when installed in a heated space.
When installed in a cold space, the duct should be insulated with 20 mm closed-cell insulation.
How often should ventilation ducts be cleaned in a detached house?
There is no legal requirement mandating a specific duct cleaning interval for detached houses, but the general recommendation is to clean the ventilation ducts approximately every ten years.
The BlueSky duct system is easy to clean, as the ducts can be disconnected from the distribution boxes and cleaned completely in a single operation. In addition, the distribution boxes themselves can be opened, allowing them to be cleaned from the inside as well.
When is a duct radiator used?
A duct radiator is used in Vallox ventilation units when there is a need to provide additional heating or cooling of the supply air before it reaches the occupied spaces. The specific application depends on where the radiator is installed.
If the radiator is installed in the outdoor air duct, it can be used for:
- Both preheating and cooling
- Preheating only
- Cooling only
If the duct radiator is installed in the supply air duct, it can be used for cooling only.
How is a duct radiator used?
A radiator connected to the collector circuit of a ground-source heat pump is not available as a built-in option in Vallox ventilation units, but an MLV radiator installed in the ductwork can be connected to them. Control of the pump and solenoid valve for the cooling and preheating circuit can be provided by the MyVallox unit’s automation system.
The 24 V control voltage can be used to control a contactor that starts the pump and opens the solenoid valve (External electrical connection, Duct radiator connection).
Remember to connect the wire between RM/I and +24 V.
How is a duct radiator controlled by a ventilation unit?
When an MV ventilation unit is used to control a duct radiator valve and actuator, it is recommended that the unit is running software version 2.0 or later. Control of a radiator installed in the supply air duct cannot be implemented with older software versions. If the unit is registered to the MyVallox Cloud service, it will always have the latest software version.
In addition to the radiator, a separate NTC temperature sensor (4109577) must be installed in the duct. The sensor is supplied with the Vallox MLV radiator and should be installed either before the radiator in the outdoor air duct or after the radiator in the supply air duct. The duct sensor temperature reading can be viewed at:
Menu → Service Menu → Unit Information → Page 5 “External Sensor”
The External Sensor Setting must be configured for either outdoor air duct radiator control or supply air duct radiator control, depending on the radiator installation location:
Settings → Professional Settings → I/O and Bus Settings → External Sensor Settings
The Relay Setting must be configured for external liquid radiator control:
Settings → Professional Settings → I/O and Bus Settings → Relay Settings
In the Duct Radiator Settings, select whether the radiator will be used for cooling, heating, or both.
The duct radiator can be configured to operate automatically or manually:
Automatic — In summer, the supply air temperature is maintained at the configured temperature setpoint. In winter, the duct radiator starts when the outdoor air temperature falls below the winter setting.
Manual — In summer, the duct radiator starts when the outdoor air temperature rises above the summer setting. In winter, the duct radiator starts when the outdoor air temperature falls below the winter setting.
To prevent condensation risk in the supply air duct, you can set the supply air limit control mode to either automatic or manual:
Automatic — The supply air limit is adjusted automatically based on the dew point of the extract air. If the supply air temperature falls too low, the duct radiator stops.
Manual — The supply air limit can be set manually. When the supply air temperature falls to the configured limit, the duct radiator stops.
See also: Setting the temperature control mode.
How does a wall air blow-out and intake unit work?
The Out/In Vario is designed for use as a residential exhaust air blow-out and outdoor air intake unit. Thanks to the patented design of the Vallox Out/In air blow-out and intake unit, the exhaust air discharge velocity can be adjusted in multiple stages, resulting in low pressure loss.
Due to its design, the unit has excellent water separation performance and is not prone to freezing. This significantly improves the operation of the ventilation system.
The unit is quick and easy to install and requires no maintenance.
The air blow-out and intake sections can be positioned separately, even on opposite sides of the building. This provides greater flexibility in building design and makes it easier to achieve the required minimum distances from factors that may reduce air quality (such as waste collection areas, adjacent balconies, etc.).
The unit’s handedness can be selected easily. The device is available in four different colours: white, brick red, black and grey.
In what types of houses is wall air blow-out suitable?
Wall air blow-out is a cost-effective solution for both apartment buildings and detached houses. By using wall air blow-out, significant cost savings can be achieved in the construction of the ventilation shaft.
Wall air blow-out is not suitable for houses located on small plots or for buildings that are situated very close to one another.
Does the Vallox Out/In unit have SERT R074 certification?
Yes, Vallox wall air blow-out units comply with the certification criteria of SERT R074: Exhaust Air Wall Blow-out Unit Certification.
This means that the Out/In Vario meets the equipment requirements for residential exhaust air wall blow-out and outdoor air intake applications.