Vaillant neck plug for low-profile manifold - recoVAIR /4

Product detailed description

Vaillant neck plug for the low-profile manifold - recoVAIR /4

The neck plug is an additional part of the Vaillant recoVAIR /4 system designed for temporary or permanent sealing of the main connection (neck) of the low-profile air manifold, i.e. the point where the manifold connects to the main run of round EPP ducting leading from the central unit recoVAIR VAR 150/4, VAR 260/4 or VAR 360/4. This is a different part from the plugs for the individual 75 mm manifold outlets - those seal the end branches leading into rooms, while the neck plug seals the manifold's actual main inlet/outlet on the side connecting to the EPP ducting.

This part is used primarily in situations where the manifold is not yet definitively connected to the main run (for example during the gradual construction of a building), or when it is necessary for any reason to temporarily disconnect the manifold from the main distribution without allowing construction dirt, dust or insects to enter it in the meantime. It is therefore a typical example of "small" accessories which, while not directly affecting the system's performance parameters during normal operation, significantly facilitate and protect the installation process before it is put into operation.

Technical characteristics

• Purpose: sealing the main connection (neck) of the low-profile manifold
• Material: rigid plastic with a sealing element, resistant to normal construction site dust
• Compatibility: 12-outlet and 17-outlet low-profile manifold, recoVAIR /4 system
• Installation type: simple fitting without the need for tools, fully removable and reusable
• Unit compatibility: 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 (Vaillant Group manufacturing plant)
• Warranty: 2 years from sale to the end customer

When you most often need this plug

• Gradual construction of a building - if the manifold is installed in the ceiling before the main run of EPP ducting from the central unit is completed, the neck plug protects the inside of the manifold from contamination during further construction work (masonry work, sanding, painting).
• Trial operation and system commissioning - during the gradual commissioning of the system, it may be practical to temporarily disconnect one of the manifolds (e.g. when working on another circuit) without leaving its main inlet permanently open.
• Storage of a spare manifold - if an installation company or investor keeps a manifold in stock as a spare part, the neck plug protects its interior from dust during storage.
• Service work - when replacing or repairing the main ducting run, it is advisable to temporarily seal the manifold with the plug until the new run is completed and connected.
• Transport and handling on the construction site - when moving an already installed but not yet connected manifold within the site (for example when changing its position according to a revised project), the plug protects its interior during carrying and temporary storage.

Installation - procedure

1. The plug is fitted directly onto the manifold's neck (the connecting spigot that, during normal operation, connects the manifold to the main EPP ducting).
2. Check that the plug sits evenly around the entire circumference of the neck without any gaps that would allow dust or dirt to enter the interior of the manifold.
3. When the manifold is definitively connected to the main ducting run, the plug is simply removed and replaced with the actual connection to the EPP ducting.
4. We recommend keeping the plug after removal (e.g. in case of future need to temporarily disconnect the manifold during service or renovation work).

Difference between the neck plug and the outlet plug

The range of accessories for low-profile manifolds of the recoVAIR /4 system includes two different types of plugs:

• Neck plug (this product) - seals the manifold's main connection to the EPP ducting, with a size corresponding to the diameter of the neck.
• 75 mm outlet plug (a separate product, sold in packs of 10 pcs) - seals the individual end outlets of the manifold leading into rooms, with a diameter of 75 mm.

These two products are not interchangeable, as they have different sizes and functions - when ordering accessories, it is therefore necessary to choose exactly the type of plug that corresponds to the location where it is to be used.

Why it is important to protect the inside of the manifold from dirt

The air supplied through the recoVAIR /4 system into living rooms is filtered directly in the central unit, where the replaceable filter cartridges are located. However, if construction dirt were to get into the ducting downstream of the filter (i.e. also into the manifold) before the system is completed and put into operation, this dirt could subsequently be released into the supplied air without any chance of being caught by the unit's filter. The neck plug therefore performs an important preventive function throughout the entire construction period, when the manifold is not yet definitively connected and fully functional, but is already physically installed in the ceiling and exposed to the dusty construction environment.

Compatibility with the recoVAIR /4 system

The neck plug is designed precisely for the necks of low-profile manifolds of the Vaillant recoVAIR /4 system (both the 12-outlet and 17-outlet variants) and is part of a complete range of accessories together with the neck, 75 mm outlet plugs, flexible hoses and adapters of the same system. Do not combine this part with manifolds from other manufacturers or with different connection sizes.

Relationship between individual construction phases and the use of this plug

The implementation of a controlled ventilation system with heat recovery in a new building usually takes place in several phases that overlap in time with other construction trades:

1. Shell construction and installation of the main ducting - at this stage, manifolds are usually installed in prepared ceilings, while the main run of EPP ducting to the central unit may not yet be definitively completed or connected.
2. Finishing works - painting, sanding of plasterboard, flooring installation and other activities generating increased dust, during which it is advisable to keep the manifold protected with the neck plug if it is not yet connected to the main run.
3. Final connection and commissioning of the system - after completion of the rough works, the plug is removed, the manifold is connected to the main run via the neck, and the system is put into trial and later permanent operation.

This procedure allows installation companies to proceed with the installation of the ventilation equipment independently of the exact schedule of other trades, without the risk of contaminating already installed ducting components.

Relation to the overall cleanliness of the ventilation system at commissioning

The quality of the air that the recoVAIR /4 system supplies into living rooms immediately after first start-up depends not only on the functionality of the filters in the central unit, but also on whether the internal parts of the ducting became contaminated during installation before its final sealing and commissioning. Construction dust, fine sawdust or residues of insulating materials that get into an unsealed manifold could be released directly into the air supplied to the rooms when the fan is first started - therefore, consistent use of the neck plug throughout the period before final connection is considered part of the standard procedure for a quality installation of this type of system.

Practical recommendations for installation companies

When gradually carrying out several construction projects at the same time, it has proven useful in practice to have a sufficient number of these plugs on hand as a regular consumable item, since:

• the schedule of work of different trades (masonry, electrical, ventilation) rarely matches exactly in practice, and the manifold therefore often has to remain temporarily "disconnected" from the main run longer than originally planned,
• an additional order for a single missing plug can cause unnecessary delays in the progress of work if the need for it is discovered directly on site,
• the plug can be reused on another project once the manifold is definitively connected, or kept as a spare part for future servicing.

Summary - a small part with great practical importance

The value of this product is not judged by its price or size, but by the risk it can prevent during the installation of a controlled ventilation system with heat recovery. It prevents contamination of the inside of the manifold, allows the installation company to flexibly plan the progress of work on site regardless of the exact schedule of other trades, and ultimately helps ensure that the system, when first started up, delivers truly clean, filtered air into the rooms without the risk of releasing construction dust accumulated during construction in inadequately protected ducting components.

Maintenance and care

As a passive part with no moving parts, the neck plug requires no maintenance during use. We recommend:

• keeping the plug even after the manifold has been definitively connected to the main run, in case of future need (service, renovation, temporary disconnection during other construction work near the ceiling),
• checking, before reuse, that the plug's sealing element is not mechanically damaged or worn,
• if the plug is lost or damaged, replacing it with a new original part in order to maintain the function of protecting the manifold against dirt.

Why choose an original Vaillant part

Even this small, seemingly inconspicuous part contributes to the overall quality of the installation of a controlled ventilation system with heat recovery - it protects the sensitive internal structure of the manifold from contamination during construction and allows flexible planning of installation work progress without the risk of damaging or contaminating already installed components. An original part from Vaillant guarantees a precise dimensional fit to the neck of the specific manifold used in the recoVAIR /4 system, which cannot always be guaranteed with universal or unlabelled replacements from other sources.

Given the low price of this part compared to the value of the entire ducting it protects from contamination during construction, purchasing it is worthwhile even if you plan to connect the manifold to the main run relatively soon after its installation - construction work often does not proceed exactly according to the original schedule, and delays in individual trades are, in real construction practice, more the rule than the exception.

Frequently Asked Questions

Shipping and packaging

Due to its compact size, this part is commonly shipped even via standard courier services, including parcel pick-up points.