Installation tips for the Vallox BlueSky air distribution system
Read Installation Tips for installing the Vallox BlueSky Air Distribution System.
It is sensible to design and install the flexible Vallox BlueSky duct system in a “star shape”. When this is done, the ductwork becomes symmetrical and as short as possible, which means that no extra costs are incurred. To speed up installation, the dimensioning of the ductwork can be first done on the floor. After that the pipes and their distribution boxes can be lifted and attached to the ceiling.
The distribution boxes, valve coupling units and TINO-D series valves have suitable outlet collars for the BlueSky duct. To make the coupling tight, a sealing ring is put at the end of the duct, in the first groove between the ridges. We recommend moistening the sealing ring with water before installation!
After installation and before taking the pipes into use the pipe ends have to be protected against dust and other dirt with the supplied shield caps.
It is recommended to install the BlueSky ductwork wholly outside or wholly inside the vapour barrier in order to make the vapour barrier as tight as possible.
Installation in suspensions or enclosures
When the ducts are in a warm room, no thermal insulation is needed. If cooled air is carried in the ducts, the ducts have to be insulated against condensation.
Attic floor installation
When a pipe is installed in attic floor insulation, it is recommended to do the installation right on top of the vapour barrier. When this is the case, the pipes do not need any additional insulation, for the attic floor insulation is enough for insulating the duct as well. The penetration of the vapour barrier is insulated.
Intermediate floor installation
Välipohjaan asennettaessa Vallox BlueSky -kanava asennetaan suoraan alakerran kattorakenteen yläpuolelle.
- Floor coating
- Timber panel or plasterboard
- Vallox BlueSky pipe in insulation
- Ceiling below
Installation in concrete pouring
- Floor coating
- Cement mortar
- Building foil
- Soundproofing as required
- Concrete slab according to strength calculations, inside which the Vallox BlueSky pipes have been cast
- Vallox BlueSky ventilation duct
The Vallox BlueSky ductwork is installed among concrete reinforcement or thin-shell slab and fixed to the concrete reinforcement with cable ties. After the duct and other HVAC installations have been done, other necessary skin reinforcement is applied before concrete pouring.
Supporting
The Vallox BlueSky ducts are supported in the immediate vicinity of all joints and on both sides of the connector outlet. There is no need to support the duct in any other place unless the method of installation so requires.
Installation of air distribution boxes and valve outlets
- A sealing is installed in every joint of the Vallox BlueSky ventilation duct in the last pipe groove.
- Vallox BlueSky distribution boxes have sound attenuation and a maintenance door.
- However, it is recommended to install a silencer between the ventilation unit and the air distribution box in order to silence the sound of the fan.
- Vallox BlueSky air distribution boxes are delivered with the installation corners and their screws.
- The Vallox BlueSky duct and the washer ring are pushed into the outlet collar of the air distribution box and locked with two locking devices. For the duct coming from the ventilation unit there is an outlet collar with a rubber ring.
- The valve connection outlet is first attached to the structures, after which one or more ducts can be connected to it.
- The Vallox BlueSky duct and the washer ring are pushed into the valve connection part. The duct is locked into the locking tongues.
- A 125-mm valve is installed in the valve connection part either with a spring attachment or with a 125-mm clamping frame.
- Tino-D and Tinoi-D valves have two outlets for the BlueSky duct. The Vallox BlueSky duct and the washer ring are pushed into the duct outlet. The duct is locked into the locking tongues.
- If only one of the duct outlets of the valve or connection part is taken into use, the other outlet is closed with the shield plug supplied with the outlet. The shield plug is installed inside the duct outlet.
Fire protection and enclosure
- When the Vallox BlueSky system is installed inside buildings belonging to fire class P3 (detached houses, terraced houses and semi-detached houses), the ducts are enclosed with material of at least class D-s2,d2 or coated with mineral wool.
- Valves to be used are ones that choke air flow and meet the requirements given in part E7 6.1. in the Finnish Building Regulations and Guidelines.
- When the Vallox BlueSky system is installed in a dwelling in a block of flats, the finished duct installations must be coated with a 2 x 15-mm fire-resistant plasterboard, for instance, and tested fire damping valves are used as valves.
Indicative calculation of supplies for BlueSky air distribution system
Duct volume
The duct volume needed can be estimated according to the number of rooms. If the calculation is based on the number of rooms, add one additional roll for a two-storey house and two additional rolls for a three-storey house.
Other ducts
Fresh air coming to the unit, exhaust air going from the unit and the duct coming from the unit to distribution boxes are always ducted with a hard duct. Silencers are located between the unit and distribution boxes. The extraction duct of a cooker hood or a fan must be a spiral-seam duct.
Calculation for valve coupling units
Calculate the number of valves in the ventilation plan. If there is no plan, the number can be estimated with the following formula: number of rooms x 1.2 (rounded up). The factor 1.2 takes into account the fact that a sauna has always two valves. It is also sometimes necessary to have two valves in a large living-room. Every space with a ventilation valve, such as an entrance tambour where clothes are kept or a separate dining recess, is regarded as a room. An entrance hall is usually not taken into account.