Vaillant recoVAIR VAR 60/2 DW - set of 2 local heat recovery units (wireless, with remote control)

Product detailed description

The wireless set of local heat recovery units Vaillant recoVAIR VAR 60/2 DW is a complete solution for quiet ventilation with heat recovery for two rooms, which communicate with each other via radio – without the need to run a connecting cable through partitions or ceilings. The package includes 2 pcs of the recoVAIR VAR 60/2 DW ventilation unit (wireless design), 2 pcs of installation kits, 1 pc of white outdoor cover with noise silencer, and 1 pc of remote control. This set is the first choice for renovations without demolishing partitions and everywhere additional cable routing would be impractical or expensive.

Wireless synchronization of units

Both units in this set communicate with each other via radio at a frequency of 868.0 – 868.6 MHz, which is an unlicensed band reserved in Europe, among other things, for home automation and sensors. Thanks to this, the units can be installed in any two rooms regardless of whether there is a shared partition or structural wall between them, or whether they are separated by a hallway – it is only necessary to maintain sufficient radio range in a typical masonry building, which is usually not a problem at typical room distances in a house or apartment. Pairing the units is done simply via the service menu at first commissioning.

You will particularly appreciate the wireless solution during renovations of existing apartments and houses, where additional drilling of grooves for cables would mean an unnecessary intervention in already finished surfaces, in heritage-protected or historic buildings, or simply when you want to complete the installation as quickly and cleanly as possible without demolition work.

How local heat recovery recoVAIR VAR 60/2 works

recoVAIR VAR 60/2 is a decentralized (local) ventilation unit with heat recovery, which solves ventilation directly at the point of need – in a specific room, bedroom, living room, office or other room – without the need to build a central air handling distribution system throughout the house. The unit is fitted into a single circular opening with a diameter of 162 mm drilled in the perimeter wall and connected to the 230 V electrical network. No further construction interventions, no ductwork routed through ceilings or partitions, no air handling machine room.

The heart of the unit is a regenerative ceramic heat storage exchanger. The fan in the unit works in regular 70-second cycles and alternates the direction of airflow: in the first phase of the cycle, the unit extracts moist, stale air from the room outside, while the heat from this outgoing air is temporarily stored in the ceramic structure of the exchanger. In the second phase, the fan direction reverses and the unit draws fresh outdoor air inside – this air, when passing through the still-warm ceramic exchanger, absorbs the stored heat, so pre-heated air enters the room. Thanks to this principle, recoVAIR VAR 60/2 achieves a heat recovery rate of up to 92% (DIBt methodology), which significantly reduces heat losses caused by ventilation compared to conventional window ventilation.

To prevent pressure imbalance in the room or between adjacent rooms, the units in a standard set are installed in pairs that work in anti-phase – while one unit draws in fresh air, the other is extracting stale air, and vice versa. This synchronization is controlled either by a cable connection (D variant) or wirelessly at a frequency of 868.0 – 868.6 MHz (DW variant). Up to 16 units can be connected in one system (1 master "leader" and up to 15 "follower" units), so the solution can be gradually expanded to a larger apartment or house.

The integrated humidity sensor can automatically activate the unit when the humidity in the room exceeds a set threshold – typically after showering, cooking or drying laundry – thereby actively preventing condensation of water vapor on cold surfaces and the formation of mold in room corners and behind furniture, which is an increasingly common problem in well-sealed modern homes as well as insulated older homes.

Installation and mounting

Installation of the recoVAIR VAR 60/2 unit consists of a core drilling with a diameter of 162 mm through the perimeter wall, into which the mounting tube is fitted (insulated plastic tube available in a length of 500 mm, which can be shortened, or for thicker walls up to 1,000 mm, two tubes can be combined in series). On the exterior side, the opening is covered with a white outdoor cover with a noise silencer type VAZ WD160, which also protects against rain and insect intrusion and reduces the transmission of outdoor noise into the interior. The unit itself is inserted into the prepared mounting tube from the interior side and connected to the 230 V/50 Hz electrical network.

DW variant units communicate wirelessly on a radio frequency of 868.0 – 868.6 MHz, which is an ideal solution for renovations without demolition, in heritage-protected buildings, or wherever running a new cable between rooms would be complicated, expensive or structurally problematic. Pairing the units is done simply via the service menu; the range of the radio connection in a typical masonry building is sufficient for typical distances between rooms in a house or apartment.

The operating temperature of the unit ranges from −30 °C to +50 °C, so the recoVAIR VAR 60/2 works reliably even in the cold winters of Slovakia as well as during summer heat waves. The IPX4 protection rating ensures resistance to splashing water from the facade side. An experienced heating installer, electrician or ventilation technician can complete the installation within one day per room, without the need for a building permit (it is considered routine maintenance/modernization of the perimeter envelope, however we recommend verifying local regulations for heritage-protected facades).

Package contents of the set

• 2× recoVAIR VAR 60/2 DW ventilation unit (wireless design, code 0010047341)
• 2× installation kit – mounting tube for installation in the perimeter wall
• 1× VAZ WD160 outdoor cover with noise silencer, white
• 1× VAZ RC/2 remote control with display, communicating wirelessly with both units

For more advanced automatic control based on the current CO&sub2; concentration and humidity in the room, a wireless wall panel VAZ CPCW/2 with an integrated CO&sub2; sensor can be purchased additionally instead of the included remote control.

Comparison with other ventilation methods

The local heat recovery unit recoVAIR VAR 60/2 thus occupies a middle position between simple but energy-inefficient ventilation methods (window, grilles, extraction fan) and expensive, structurally demanding central air handling – it offers most of the benefits of heat recovery (high efficiency, automatic control, humidity and CO&sub2; monitoring) with minimal construction intervention limited to one small opening in the wall per room.

Energy savings and return on investment

Ventilation through an open window is the least efficient method of air exchange in terms of heat losses – during short but intense airing (so-called burst ventilation), practically all the heat contained in the exchanged volume of air escapes outside, which the heating system must then "buy back" by heating the cold air supplied from outside. With the recoVAIR VAR 60/2 type of ventilation, with a heat recovery rate of up to 92% (DIBt methodology), most of this energy is captured in the ceramic exchanger and transferred back to the supplied air – heat that would otherwise escape through the window thus stays inside the interior.

The specific financial savings depend on several factors – the type and age of the building, the level of insulation, the price of heating energy, the number of ventilated rooms, and previous ventilation habits (how many times a day and for how long the room has been aired through a window so far). In general, in more modern, well-insulated houses, where ventilation represents a relatively larger proportion of heat losses (since losses through the perimeter envelope are already minimized by insulation), the benefit of controlled ventilation with heat recovery is most significant – not only financially, but also in terms of maintaining a stable, pleasant room temperature without drafts and without the temperature fluctuations typical of burst window ventilation.

The low power consumption of the unit (1.7 – 10 W, specifically 0.44 W/(m³/h)) means that the operation of the fan itself represents only a negligible item in the household's electricity consumption – roughly comparable to a small night light running continuously, significantly lower than central air handling units with long ductwork and larger fans.

Maintenance and filters

The recoVAIR VAR 60/2 unit uses a pair of filters – one of ISO Coarse 45% class on the supply (outdoor) air side and one of ISO Coarse 30% class on the exhaust (indoor) air side. Depending on operating conditions (urban environment, pollen season, proximity to a busy road), the filters need to be checked and replaced approximately 2 to 4 times a year; the display on the control panel or remote control will alert you when replacement is needed. Filter replacement is a self-service operation without the need for service intervention – the filter cartridge is simply pulled out and replaced with a new one.

The ceramic heat storage exchanger is a maintenance-free component without moving parts, which does not require cleaning or replacement during normal operation for the entire lifetime of the unit. We recommend having the fan checked once every few years during a regular service inspection of the heating/ventilation system, although it is a component designed for long-term maintenance-free operation.

Why choose this particular model

The wireless DW set is the optimal choice for renovations where you do not want to interfere with already finished surfaces by running cables between units, or when you need flexibility for a subsequent change in the location of one of the units. The technical ventilation parameters (airflow, recovery efficiency, noise level) are exactly the same as with the wired D variant – the difference lies solely in the way the units communicate with each other.

Frequently asked questions

Vaillant – a proven brand for heating and ventilation

Vaillant is a German manufacturer of heating, cooling and ventilation technology with more than 150 years of history, which is among the most trusted brands on the Slovak market in the segment of condensing boilers, heat pumps and controlled ventilation systems. The recoVAIR range covers heat recovery ventilation from local (decentralized) units for individual rooms, such as the recoVAIR VAR 60/2, to central air handling units for entire houses. By purchasing a Vaillant product, you get a device with guaranteed workmanship quality, available service and spare parts in Slovakia, and a two-year warranty.