Vaillant wall-mounting bracket for 2x aguaFLOW exclusiv VPM…/2 W

Product detailed description

Vaillant wall-mounting bracket for 2 x VPM…/2 W — complete wall bracket for a cascade of two aguaFLOW exclusiv stations

The wall-mounting bracket for 2 x VPM…/2 W is a complete, independently installable Vaillant support solution designed for the simultaneous wall installation of two aguaFLOW exclusiv fresh water stations of the VPM…/2 W series right from the very beginning of the project. Unlike combining a basic single bracket with a later expansion part, this double bracket is designed and manufactured as one integrated structural unit for both stations at once — suitable especially for projects where the need for cascade domestic hot water capacity is already known and decided at the design stage, meaning the investor does not need a gradual, two-step approach via later expansion.

Why choose a cascade of two aguaFLOW exclusiv stations instead of one larger unit

A cascade connection of two fresh water stations of the same output instead of one larger station is chosen mainly in facilities with higher or uneven peak domestic hot water demand — typically apartment buildings with a larger number of units, accommodation facilities, sports facilities with shared showers, or commercial premises with variable, hard-to-predict consumption. The advantage of a cascade is higher operational reliability (if one station fails or is being serviced, the other remains functional and the system can at least partially cover demand), the possibility of more even distribution of wear between two stations instead of concentrating the entire output in a single unit, and in some cases also easier future serviceability, since replacing or repairing one station in the cascade does not mean a complete interruption of hot water supply during the intervention.

This double bracket is precisely the most efficient choice for such pre-planned cascade solutions — instead of purchasing a basic bracket and later expanding it (which makes sense with a gradually growing need), the investor directly implements a complete cascade with a unified support structure designed from the start for both stations.

Technical design

The bracket is constructed as one integrated steel frame with sufficient load-bearing capacity for the simultaneous load of two aguaFLOW exclusiv stations, including their filled hydraulic piping — i.e. a significantly higher load than with the single version. The surface treatment meets standard requirements for corrosion protection of steel supporting elements in a technical room environment with increased humidity around water piping. The spacing and arrangement of the mounting points of both stations is designed to ensure sufficient service access to both stations simultaneously, including space for filter replacement, heat exchanger inspection and servicing of the circulation pumps of both units without the need to dismantle the other station.

Installation — wall requirements for double load

Given the simultaneous load of two stations and the complete bracket, it is essential to thoroughly verify the load-bearing capacity of the wall at the anchoring point before installation — this represents a significantly higher load than with the single bracket, which is why verifying the suitability of the wall's supporting structure (masonry or concrete wall with sufficient thickness and strength) is especially important. In case of any doubts about load-bearing capacity, we recommend consulting a structural engineer before implementation, since modifying the supporting structure after both stations have been installed would mean an extensive and costly intervention in an already functioning system.

The installation itself — anchoring the bracket, installing both stations, their hydraulic connection to the primary circuit to the allSTOR exclusiv storage tank (usually a shared line with distribution to each station), connection to the cold and hot domestic water piping, electrical wiring, and setting up the cascade control — must be carried out by a qualified installer experienced with cascade installations of the aguaFLOW exclusiv system. Correct setup of the cascade control (for example, alternating the load between both stations during normal operation and simultaneous operation of both during peak demand) is key to achieving the planned reliability and service life of both units.

Compatibility

The bracket is designed for two aguaFLOW exclusiv fresh water stations of the VPM…/2 W series simultaneously, operated in conjunction with an allSTOR exclusiv storage tank. Both stations in the cascade should be of the same or a deliberately chosen compatible output variant selected by the designer — we recommend verifying the exact compatibility of specific models according to the technical documentation or with our sales team before implementing the project.

Material

As with the single version, this is a steel structure with corrosion-resistant surface treatment, but designed from the ground up for the simultaneous load of two stations. The material design corresponds to long-term operation in the conditions of a technical room with increased humidity.

Maintenance

During regular system servicing (ideally at the same time as servicing both stations and the storage tank), we recommend checking the condition of all bracket anchoring points to the wall, since with double loading, thorough inspection of the mechanical integrity of the supporting structure is even more important. It is also advisable to check the balance of load between both stations during servicing (based on operating hours or number of starts) and, in case of significant imbalance, to review the cascade control settings.

The impact of a cascade solution on component lifespan

Operating two fresh water stations in a cascade instead of one larger unit also brings a slightly different wear profile of individual components. With correctly configured control, which alternates the load between both stations during normal operation and engages both stations simultaneously only during peak demand, operating hours of the circulation pumps are distributed more evenly and individual heat exchangers experience less thermal stress compared to a situation where the entire volume of demand is constantly handled by a single large station. In practice, this can result in a somewhat extended lifespan of individual components and a more even distribution of future replacement costs over time — instead of a one-time replacement of an entire large station at the end of its service life, the operator can service or replace each of the two cascade stations independently and at different times.

Why choose the complete double bracket right away

If the need for cascade domestic hot water capacity is clear already at the design stage of a project, implementing it directly through this complete double bracket is more efficient than the gradual approach via a basic single bracket with later expansion — you save two separate installation interventions and have a unified supporting structure designed by the manufacturer for both stations from the start. This choice is particularly suitable for new buildings and larger projects where hot water capacity is part of the original project specification.

Space planning for a cascade installation

Installing two aguaFLOW exclusiv stations on a shared double bracket requires more careful space planning than installing a single station — sufficient free space must be ensured in front of both stations for simultaneous service access (filter replacement, heat exchanger inspection, circulation pump servicing), sufficient space above and below the bracket for routing doubled hydraulic piping to both stations, and the position of electrical wiring and control modules must also be considered so that they remain accessible for both units after installation without the need to route cables across the space of the other station. We recommend taking these requirements into account already at the boiler room project documentation stage, ideally in cooperation with the heating and water system designer.

Hydraulic connection of the cascade — principle of splitting the primary circuit

When connecting two fresh water stations in a cascade to a shared allSTOR exclusiv storage tank, the primary circuit (supplying heat from the storage tank) is generally split between both stations either via a parallel line with flow balancing between both branches, or via a series connection according to the specific recommended wiring diagram for the given project. The choice of the correct method for splitting the primary circuit affects the evenness of output of both stations and is part of the hydraulic design that should be prepared by the designer or an experienced installer before installation. An improperly balanced distribution between both stations could lead to uneven loading (one station working significantly more than the other), which would partially weaken the benefits of the cascade solution in terms of even wear of both units.

Economic comparison with a gradual implementation via expansion

An investor weighing between a complete double bracket right away (€870) and a gradual approach via a single bracket (€770) with later expansion (€470, i.e. a total of €1,240 with later implementation) will find that with a certain and from-the-start planned need for two stations, this complete double bracket is clearly the cheaper and simpler choice — not only in terms of lower total part costs, but also savings on installation costs, since it involves one installation intervention instead of two separate implementations over time. The gradual approach via expansion makes sense only when there is no certainty about the need for a second station at the time of initial implementation, or when the budget does not allow for a one-time investment in full cascade capacity.

Frequently asked questions

Broader context — planning hot water capacity for larger buildings

When designing domestic hot water preparation for larger buildings (apartment buildings, accommodation facilities, premises with shared showers and similar), one of the key tasks for the designer is to correctly estimate the peak simultaneous demand, which can be significantly higher than the average daily consumption. A cascade solution with two (or more) fresh water stations makes it possible to cover exactly these peaks without the need to oversize a single station for extreme, only briefly occurring demand. This double bracket thus represents a practical basis for implementing such a cascade solution from the very beginning of the project, with the prospect of possible further expansion by a third or fourth station via separate expansion parts, should the need for even higher capacity arise in the future.

For investors and designers weighing between a single bracket with a view to later expansion and a complete double bracket right away, we recommend considering mainly how certain the need for a second station is already at the time of implementation — with a clearly defined and budget-approved cascade need from the start, this double bracket is the more efficient choice, while with an uncertain or gradually growing need, the gradual approach via a basic bracket with later expansion may be more advantageous.

It is also worth mentioning that with a complete double bracket right away, the risk is eliminated that, at the time of a future expansion (a few years later), the given expansion part might for any reason no longer be manufactured or supplied in its original design compatible with the by-then older single bracket — with a cascade implemented from the start, this uncertainty is completely eliminated, since both parts of the supporting structure are part of a single manufacturing unit brought to market at the same time.

If you are planning a cascade installation for a larger project, we recommend contacting our sales team already during the budget preparation stage — we will gladly provide information on compatible variants of aguaFLOW exclusiv stations, help you estimate the required capacity based on your building's consumption profile, and advise whether this complete double bracket or a gradual implementation via a basic bracket with a view to later expansion is more suitable for your specific case.