Vaillant low-profile manifold 12-outlet 75/62 mm, with plug and spigot - recoVAIR /4

Product detailed description

Vaillant low-profile 12-outlet manifold 75/62 mm, with cap and connector - recoVAIR /4

The low-profile manifold with 12 outlets is a key element of the distribution section of the Vaillant recoVAIR /4 system - it is a box that is installed in the suspended ceiling or interstitial space near the central heat recovery unit (recoVAIR VAR 150/4, VAR 260/4 or VAR 360/4) and splits the single main air stream coming from the unit (via round EPP ducting Ø210/180 mm or Ø180/150 mm) into 12 separate branches with a diameter of 75/62 mm, each of which leads via a flexible hose to one end element in the room (a diffuser, a disc valve or an outlet). Thanks precisely to its low profile (a flat shape instead of a classic cylindrical manifold), it can also be installed in suspended ceilings with a minimal clearance height, where a bulky round manifold simply would not fit.

This particular product also includes a connector (a connecting spigot linking the manifold to the main round EPP ducting) and a cap, so once unpacked you have a complete assembly ready to be connected to the main line without having to purchase these two additional parts separately. You will appreciate this solution especially during the first installation of the system, when you do not yet have an overview of all the small connecting parts needed to complete the ductwork - the manufacturer has already included them with the main manifold body.

Technical characteristics

• Type: low-profile (flat) air manifold/collector
• Number of outlets: 12 x Ø75/62 mm (outer/inner connection diameter)
• Main connection: via the supplied connector to the round EPP ducting of the recoVAIR /4 system
• Included in delivery: 1 x connector (connecting spigot), 1 x main connection cap
• Body material: rigid plastic resistant to load during ceiling installation (walkable during the construction of ceiling structures)
• Low structural profile - suitable for installation in interstitial spaces with limited clearance height
• Each outlet can be capped as needed by a separate 75 mm cap (sold separately in a pack of 10 pcs)
• Compatibility with units: recoVAIR VAR 150/4 L, VAR 150/4 R, VAR 260/4, VAR 260/4 E, VAR 360/4, VAR 360/4 E
• Country of origin: Germany (production plant of the Vaillant Group)
• Warranty: 2 years from sale to the end customer

How the manifold fits into the whole air distribution system

The ductwork of the central recoVAIR /4 unit operates on three levels:

1. Main line - round EPP ducting Ø210/180 mm or Ø180/150 mm carries air from the unit to the manifold (and back during extraction) and further to the roof or facade outlet.
2. Distribution node - this low-profile manifold, which splits (or collects) air from the main line into/from individual branches leading to specific rooms.
3. End branches - flexible 75/62 mm hoses running from the manifold to each diffuser/valve in a given room, connected via adapters with a bayonet closure.

The 12-outlet manifold is suitable for medium-sized family houses with a typical number of ventilated rooms (living room, kitchen, bedrooms, children's rooms, bathrooms, toilets) - for larger buildings with a higher number of ventilation points, a 17-outlet variant is also available.

Installation - procedure and recommendations

1. The manifold is placed in the suspended ceiling or interstitial space as close as possible to the central unit, so that the main line of round EPP ducting from the unit to the manifold is as short as possible.
2. The supplied connector is first fitted onto the manifold box, through which the manifold is connected to the main round EPP ducting coming from the unit.
3. A flexible 75/62 mm hose leading to the specific end element in the room is connected to each of the 12 outlets - it is recommended to label the individual branches already during installation (e.g. by room) to make any future balancing of the system easier.
4. Unused outlets (if the project does not require all 12 branches) are capped with separate 75 mm caps to prevent an undesirable short circuit of air flow within the manifold.
5. The manifold box is mechanically anchored to the ceiling structure/suspended ceiling so that it can bear the load of walking during the installation of further ceiling layers (walkable during installation).
6. Before covering with the suspended ceiling, it is recommended to perform a pressure tightness test of the entire ductwork, including the manifold.

Balancing and adjusting the system

Once installation of all branches is complete, it is essential to perform what is known as system balancing - setting the air flow on the individual branches so that it corresponds to the designed air volume for the given room (based on its area, function and number of occupants). In the recoVAIR /4 system, this balancing is handled either directly in the software/control of the central unit (electronic flow regulation by individual zones), or by mechanical elements directly on the end outlets in the rooms. The manifold itself serves as a passive distribution point without its own flow regulation at the individual outlets.

Compatibility with the recoVAIR /4 system

This manifold is designed as part of a closed accessory system for Vaillant recoVAIR /4 central units and connects to:

• round EPP ducting of the main line (via the supplied connector),
• flexible 75/62 mm hoses (sold separately, e.g. in a 40 m roll),
• adapters and connectors of the same 75/62 mm diameter for connection to the end outlets,
• 75 mm caps for sealing unused outlets and a connector cap for closing the main connection during transport or trial operation.

Do not combine this part with manifolds or hoses from other manufacturers with a different connection diameter - a different connector profile would result in a leaky joint and loss of the guaranteed performance of the entire system.

Balanced ventilation and the role of the manifold in system balance

Central recoVAIR /4 units operate on the principle of balanced ventilation - they simultaneously supply a precisely defined amount of fresh filtered air into the building and extract the same amount of stale air, while a high-efficiency heat exchanger in the unit transfers heat between the two streams. For this balance to work correctly also at the level of individual rooms, the ductwork (including manifolds) must be designed so that air is distributed exactly according to the needs of the given room - fresh air is supplied to bedrooms and living areas, while stale air is extracted from bathrooms, toilets and the kitchen. The low-profile 12-outlet manifold is generally used either on the supply side (air supplied to living rooms) or on the extract side (extraction from "wet" rooms) - in projects with multiple zones, two manifolds are therefore commonly installed in one system, one for each direction of air flow.

Why a low-profile design instead of a classic cylindrical manifold

A classic air manifold generally has the shape of a cylinder with outlets arranged around its circumference, which requires a fairly large clearance height at the installation site. However, in modern new buildings, especially when using plasterboard suspended ceilings or where the structural ceiling height is limited, there is often not enough space available for such a bulky component. The low-profile (flat) design solves precisely this problem - the outlets are arranged in a flat, low structure that fits even into suspended ceilings with a height of just a few centimetres above the ceiling level, which in practice allows the installation of ductwork even in buildings where installing a classic manifold would otherwise be complicated or impossible without affecting the ceiling height throughout the entire room.

Practical recommendations when designing ductwork with this manifold

• Position the manifold as close as possible to the central unit to minimise the length of the main line of round EPP ducting and thus reduce the overall pressure loss of the system.
• Try to keep the lengths of the individual flexible branches from the manifold to each room as even as possible - significantly different branch lengths make subsequent balancing of the flows more difficult.
• Ensure free access to the manifold even after the suspended ceiling is installed (e.g. via an inspection hatch), in case of future inspection, cleaning or changes to the branch connections.
• Document the connection of individual outlets to specific rooms (e.g. with a photo before covering the suspended ceiling) - this will make any future servicing easier.

Maintenance and care

Once built into the suspended ceiling, the manifold is a maintenance-free component, as it contains no moving or filtering parts. We recommend:

• whenever working in the suspended ceiling (e.g. electrical wiring, lighting), checking that the manifold has not been mechanically damaged and that none of the connected hoses have become loose,
• during servicing of the central unit or when replacing the unit's filters, also periodically checking the tightness of the connector's connection to the main ducting,
• in the event of renovation or a change in room layout, reassessing the use of the individual outlets and reconfiguring the caps if necessary.

Why choose a genuine Vaillant part

The manifold is the point where the whole concept of balanced ventilation of a given building comes together - an incorrectly sized or leaky manifold can undermine even an otherwise well-designed system, as it causes an uneven distribution of air between rooms (some rooms will be "under-ventilated", others unnecessarily "over-ventilated"). A genuine Vaillant part guarantees dimensional compatibility with all connecting components (connector, caps, hoses, adapters) as well as the declared flow and pressure parameters stated in the project documentation of the recoVAIR /4 system.

Furthermore, during a service inspection or when handling a warranty claim, a genuine part with a clear Vaillant order number allows the service technician to immediately identify the exact type of component and its compatibility with the rest of the ductwork, which is often not possible without additional on-site measurement in the case of unmarked or generic replacements from other sources.

Frequently asked questions

Expanding the system and purchasing additional accessories

If, during installation or later during an extension or a change in layout, a need for additional outlets arises, we recommend considering switching to the 17-outlet variant in advance rather than combining several 12-outlet manifolds in one circuit - a simpler assembly with a single higher-capacity manifold makes future maintenance and any balancing of the system easier. 75 mm caps as well as a replacement connector or connector cap can be purchased separately at any time, so adjusting the configuration of connected outlets is possible even at a later stage without having to replace the entire manifold.

More frequently asked questions

Shipping and packaging

Due to the volume and shape of the manifold box, this product is shipped by courier directly to your address, not via parcel lockers/pick-up points, in order to prevent the shape from being damaged during transport.