Vaillant low-profile manifold neck ø210/180 - 180/150 mm - recoVAIR /4

Product detailed description

Vaillant spigot for low-profile manifold Ø210/180 - 180/150 mm - recoVAIR /4

The low-profile manifold spigot is a connecting sleeve from the Vaillant recoVAIR /4 system, which serves as a universal transition element between the main round EPP duct route (available in diameters Ø210/180 mm or Ø180/150 mm, depending on the specific ducting configuration) and the body of the low-profile air manifold. This spigot allows a flat, low-profile manifold box (12-outlet or 17-outlet) to be connected to the round main duct route leading from the central unit recoVAIR VAR 150/4, VAR 260/4 or VAR 360/4, while bridging the difference in both diameter and shape (round profile of the main route versus rectangular/flat inlet of the manifold).

The part is designated as universal precisely because it covers both commonly used main route diameters of the recoVAIR /4 system - Ø210/180 mm and Ø180/150 mm - so a single type of spigot is sufficient regardless of which of these two diameters is actually used for the main route to a given manifold in a specific project. This universality simplifies both logistics and material planning on site, as the installation company does not need to know in advance exactly which of the two diameters will ultimately be used at a given point of the ducting.

Technical characteristics

• Type: universal connecting sleeve (spigot) for low-profile manifold
• Compatible main route diameters: Ø210/180 mm and Ø180/150 mm (EPP ducting)
• Material: rigid plastic resistant to mechanical stress during installation and long-term operation
• Connection type: push-fit connection with overlap onto the round EPP duct on one side, and an adapted connection to the manifold body on the other side
• Compatibility with manifolds: low-profile manifold with 12 or 17 outlets of the recoVAIR /4 system, regardless of the variant chosen in the project
• Option of temporarily sealing off with a separately sold spigot cap (e.g. during transport, storage, or trial operation before final connection to the main route)
• 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 (manufacturing plant of the Vaillant Group)
• Warranty: 2 years from sale to the end customer, with the option of extension upon registration of the entire system

Why this spigot is part of the system and when you need it separately

The low-profile manifold in the standard offer (e.g. the 12-outlet variant with cap and spigot) is already supplied with one piece of this spigot directly in the package. Purchasing the spigot separately as a replacement part is therefore mainly necessary in the following cases:

• The original spigot was damaged during installation (e.g. cracking due to careless handling or incorrect fitting onto the duct).
• A system with two manifolds is being implemented (separately for supply and extract air) and a second piece of the spigot is needed if the second manifold is procured separately without an included spigot.
• During a service intervention or reconstruction of an existing duct system, it is necessary to replace a worn or damaged connecting sleeve without having to replace the entire manifold.

Installation - procedure and recommendations

1. Check the diameter of the main EPP duct route to which the manifold will be connected (Ø210/180 mm or Ø180/150 mm) - the spigot is universal for both diameters, but we recommend verifying correct fit before final installation.
2. Slide the spigot onto the end of the main EPP duct coming from the central unit, ensuring even fit without tilting.
3. Connect the other side of the spigot to the inlet of the low-profile manifold body according to the design of the given manifold.
4. Check visually and functionally (by a leak test) the correct fit of the connection on both sides of the spigot before covering the ducting with a ceiling panel.
5. If the manifold is installed before the main route is finally ready for connection, we recommend temporarily covering the free end of the spigot with a separately sold spigot cap to prevent construction debris from entering the manifold.

Compatibility with the recoVAIR /4 system

This spigot is designed as a universal connecting element between the main EPP duct route (Ø210/180 mm and Ø180/150 mm) and the low-profile manifolds of the Vaillant recoVAIR /4 system. It is part of a comprehensive range of accessories together with the spigot cap, 75 mm outlet caps, flexible hoses and adapters of the same system. Do not use this spigot in combination with manifolds or ducting from other manufacturers - dimensional and shape compatibility is only guaranteed within the original recoVAIR /4 system.

Why two main route sizes in one system

Depending on the power class of the central unit and the length/complexity of the route, the recoVAIR /4 system uses two common diameters of round EPP ducting - the larger Ø210/180 mm (typically for the more powerful units VAR 260/4 and VAR 360/4 or for longer routes with higher resistance) and the smaller Ø180/150 mm (common especially with the VAR 150/4 unit or shorter routes). A universal spigot that fits both diameters brings a practical advantage - the installation company does not need to stock two different types of spigots for different projects, but can manage with a single universal part regardless of the main route diameter designed for a given house.

The spigot's place in the overall concept of the air ducting

If we imagine the entire air ducting of the recoVAIR /4 system as a chain of interconnected components, the spigot represents one of the critical transition points in this chain - not only does the diameter change here, but also the entire concept of air routing, from a single concentrated round flow to several smaller flows distributed into individual branches. Simplified, the chain looks like this: central unit → round EPP duct of the main route → spigot → low-profile manifold → 75/62 mm flexible hoses → adapters → terminal outlets in individual rooms. Any weakening in any link of this chain, including the spigot, will affect the performance and efficiency of the entire system, which is why the manufacturer pays close attention to the precise dimensional and material design of this connecting part.

Difference from the spigot cap - two different products with a similar name

In the accessories range for the low-profile manifolds of the recoVAIR /4 system, alongside this spigot there is also a separate product with a similar name - the spigot cap. This is a different component with a different function:

• Spigot (this product) - actively connects the main duct route with the manifold; air actually flows through this spigot during system operation.
• Spigot cap (separate product) - on the contrary, temporarily or permanently closes off this connection when the manifold is not currently in use or is not yet connected to the main route.

When ordering accessories, it is therefore necessary to distinguish between these two products depending on whether you need a part for actively connecting the main route to the manifold (spigot), or for temporarily/permanently closing it off (spigot cap).

Practical experience of installation companies

Installation companies that regularly install recoVAIR /4 systems recommend always having at least one spare piece of this spigot on hand beyond the planned consumption, since:

• it is a relatively affordable part compared to the overall cost of installing the ducting, so keeping one spare piece does not significantly increase the overall project budget,
• possible damage during installation (e.g. clumsy fitting onto the duct with forceful twisting) can ruin the spigot before it is finally installed,
• when installing a system with two manifolds (separately for supply and extract air), it is practical to have a sufficient number of pieces available in advance, so that installation does not need to be interrupted due to additionally ordering one missing part.

Maintenance and care

Once installed in the ducting, the spigot is a maintenance-free component with no moving parts. We recommend:

• checking the strength and tightness of the spigot connection on both sides whenever working on the ceiling near the manifold,
• checking the condition of this connection as part of a routine visual inspection of the ducting during service work on the central unit or filter replacement,
• if leakage or mechanical damage is detected, replacing the spigot promptly with a new original part.

How the quality of this connection relates to overall system noise

One of the parameters that residents of a house with controlled ventilation are most sensitive to is the operating noise of the system. Even a minor leak or imprecise fit of the spigot on the duct can create an audible hissing or high-frequency whistling sound during fan operation, which can also be transmitted into living spaces via the ducting itself. Since the spigot is the point where the flow cross-section changes (from round to the flat profile of the manifold), the risk of turbulence and the associated noise is higher here than on straight sections of duct. Precise, tight fitting of the original spigot is therefore one of the prerequisites for quiet and smooth operation of the entire system, for which the recoVAIR /4 central units are standardly designed.

Summary of the advantages of this solution

• Universality for two common main route diameters (Ø210/180 mm and Ø180/150 mm) means less need to stock different accessory variants.
• Precise dimensional adaptation to the body of the low-profile manifold ensures a tight connection without additional sealing.
• Simple push-fit installation without the need for special tools shortens the installation time on site.
• Compatibility with the option of temporary sealing with a spigot cap allows flexible planning of the installation process on site.

Why choose an original Vaillant part

The spigot is the point where two different geometric profiles of the ducting meet (round versus flat), so the precision of its dimensions is crucial for maintaining the tightness of the entire system. A non-original or dimensionally inaccurate part could cause a leaky connection with air escaping right at the point of highest flow concentration (the manifold inlet), which would negatively affect the performance and efficiency of the entire ventilation system. The original Vaillant part guarantees an exact match with both common main route diameters as well as with the manifold body, which cannot be reliably guaranteed with unverified replacements from other sources without physical testing directly on site.

Frequently asked questions

Shipping and packaging

Due to its compact size, this part is commonly shipped even via standard courier services including pick-up points, as it is not a bulky or fragile component requiring special handling.