Vaillant aroVAIR VA 2-075 CN – console fan coil unit 7.35 kW (cooling/heating)

Product detailed description

Vaillant aroVAIR VA 2-075 CN (also labelled by the manufacturer as VA 2-070 CN, order number 0010035094) is the most powerful console fan coil unit in the aroVAIR VA 2 CN series – with a cooling capacity of 7.35 kW and a heating capacity of up to 8.05 kW at the highest fan speed. It is designed for large open-plan spaces, kitchen-living rooms, larger offices or commercial premises, or as a central unit covering several smaller adjacent spaces. Like the other models in the series, it works with water from an air-to-water heat pump instead of having its own compressor and refrigerant.

Design and operating principle

The VA 2-075 CN is a two-pipe fan coil unit with a three-row copper heat exchanger and aluminium fins, which, unlike the smaller models in the series, is driven by up to three separate DC (EC) fans placed along the entire length of the 1360 mm long casing. Thanks to this, the unit is able to handle a significantly higher air volume (up to 1360 m³/h) without requiring disproportionately high rotor speeds, which also has a positive effect on acoustic comfort relative to output.

As with the whole series, the unit has no refrigeration circuit of its own – it requires connection to an existing source of both hot and cold water (most commonly a Vaillant aroTHERM air-to-water heat pump), while the two-pipe design allows the same heat exchanger to be used alternately for heating and cooling, depending on the water temperature supplied by the source and the currently active mode (switched directly at the source or via an additional kit with a 3-way switching valve).

Technical parameters of the VA 2-075 (070) CN

The values come from the manufacturer's official technical datasheet for the aroVAIR VA 2 CN series, measured according to EN 1397 (cooling: water 7 °C/12 °C inlet/outlet, air 27 °C dry bulb/19 °C wet bulb; heating: water 45 °C at ΔT 5 K, air 20 °C).

• Cooling capacity (total): 4.57 kW (low) / 6.12 kW (medium) / 7.35 kW (high)
• Sensible / latent cooling capacity (high speed): 5.87 kW sensible / 1.48 kW latent
• Heating capacity (total): 4.71 kW / 6.46 kW / 8.05 kW
• Water flow rate – cooling: 810 l/h / 1,100 l/h / 1,280 l/h
• Water flow rate – heating: 840 l/h / 1,140 l/h / 1,400 l/h
• Pressure drop – cooling: 19.41 kPa / 33.7 kPa / 44.1 kPa
• Pressure drop – heating: 18.16 kPa / 31.9 kPa / 46.9 kPa
• Air flow rate: 685 m³/h (low) / 1,015 m³/h (medium) / 1,360 m³/h (high)
• Fan power input: 22 W / 53 W / 113 W
• Rated current: 0.95 A
• Sound pressure level: 33 dB(A) / 44 dB(A) / 52 dB(A)
• Sound power level: 49 dB(A) / 58 dB(A) / 64 dB(A)
• Power supply: 220–240 V, 1 phase, 50 Hz
• Fan type and number: DC motor, rotary, forward-curved blades – 3 pcs
• Heat exchanger: 3-row tubes, tube diameter 7.94 mm, max. working pressure 1.6 MPa
• Hydraulic connection inlet/outlet: G 3/4"
• Condensate drain outer diameter: 18.5 mm
• Dimensions (W × H × D): 1360 × 591 × 200 mm
• Net weight: 32.5 kg
• Installation type: console (wall-mounted at floor level), optionally ceiling-mounted
• Room operating temperature range: 17–30 °C, both cooling and heating

What spaces it is suitable for

Given its output of 7.35/8.05 kW, this model is suitable for large living spaces (open-plan living room with kitchen), meeting rooms, receptions, smaller commercial premises (cafés, medical practices, showrooms), or as a supplementary source of cooling/heating for hall-type spaces with higher ceilings. Due to its higher weight (32.5 kg) and dimensions (1360 × 591 × 200 mm), it is worth planning the unit's position already at the interior design stage, as it is a significantly bulkier element than the smaller models in the series.

In many cases, it may be more advantageous to use several smaller units (e.g. VA 2-035 CN or VA 2-045 CN) distributed across individual rooms instead of one large VA 2-075 CN in a central space – the choice depends on the building layout, aesthetic preferences, and whether separate temperature control in each room is desired, or whether a single shared cooling/heating source for the open space is sufficient.

Installation and hydraulic connection

The VA 2-075 CN can be installed as a console unit (wall/floor mounted), free-standing on VAZ-015-070-F1 feet, or ceiling-mounted – given the higher weight of the unit, increased attention to anchoring into the load-bearing ceiling structure and the use of suitable fixing elements with sufficient load capacity is recommended for ceiling installation. Handling the unit during installation should be carried out by at least two people.

The hydraulic connection remains G3/4" as with the whole series, but due to the significantly higher flow rates (up to 1,400 l/h in heating mode) and pressure drops (up to 46.9 kPa), it is essential to plan for a more powerful circulation pump when designing the circuit, especially if several appliances are connected to a shared circuit with the heat pump at the same time. The condensate drain (18.5 mm) needs to be dimensioned with a margin at this power level, as the unit produces significantly more condensate in cooling mode at high speed than the smaller models in the series – we recommend regularly checking the drain's patency, especially during the summer months.

The 230 V electrical connection requires a separate protected circuit rated for a current of up to 0.95 A at the full output of the three fans; operation is controlled by a room controller connected to the unit's terminal block. For two-pipe connections with shared heating/cooling switching at the source level, a separate kit with a 3-way switching valve is available, sized specifically for this 7 kW power level (VA 2-3 VW 070C).

Recommended accessories

• VA 1-WC DC – analogue dial controller, Heating/Cooling/OFF modes, 3 fan speeds.
• VA 2-WC C – electronic controller with 7 fan speeds, finer output control.
• VA 2-WC D – digital controller with display and automatic mode, the highest control comfort in the series.
• 3-way switching valve kit VA 2-3 VW 070C – designed specifically for this 7 kW power level in two-pipe connection.
• VAZ-015-070-F1 feet – also compatible with this largest model in the series for free-standing installation.

Maintenance of the high-capacity fan coil unit

• Air filter – due to the significantly higher air flow rate (up to 1,360 m³/h), we recommend checking the filter at least once a month during intensive seasonal operation, and more often in commercial spaces with higher footfall.
• Condensate system – condensate production is significant at this power level; check the drain's patency and the condition of the trap regularly throughout the entire summer season, not just at the beginning.
• Circuit air venting – at high flow rates, air trapped in the system will manifest more noticeably as noise and reduced output; thoroughly vent the circuit after every service intervention on the piping.
• Checking the three fans – regularly (at least once a year) check that all three rotors run evenly; uneven operation may indicate a need for service.
• Cleaning the heat exchanger – with a larger fin surface area, pay extra attention to thorough yet gentle cleaning along the entire length of the casing.

Safety when handling and during electrical installation

Given the weight of 32.5 kg, transporting and installing the VA 2-075 CN unit requires at least two people – handling it alone increases the risk of back injury as well as damage to the unit itself if dropped. Electrical installation work (connecting the power supply, controller, and any 3-way valve kit) may only be carried out by qualified electricians in accordance with applicable standards, and the unit must be safely disconnected from the mains on all poles and secured against accidental reconnection before any intervention.

When removing the cover for servicing or cleaning, pay attention to the sharp edges of the metal frame and use protective gloves. If the unit operates in a space with public access (reception, shop), it is also worth considering additional protection of the controller's operating elements against unauthorised tampering.

Why choose the VA 2-075 (070) CN

If you need to cover cooling and supplementary heating of a large open space or commercial premises with a single unit connected to an air-to-water heat pump, the VA 2-075 CN offers the highest output in the entire aroVAIR VA 2 CN range while maintaining the same design philosophy and accessory compatibility as the smaller models in the series. Thanks to its three independent fans, it maintains acceptable noise levels even at high output, which is important especially in spaces with long-term human presence (offices, receptions, living spaces).

Position in the aroVAIR VA 2 CN range

The VA 2-075 (070) CN is the top model of the four-member Vaillant aroVAIR VA 2 CN console fan coil unit series, which share a common design concept – two-pipe connection, three-row heat exchanger, DC fans with three speed levels, and G3/4" connection:

• VA 2-015 CN – 1.50/1.57 kW, 1 fan, 790 × 495 × 200 mm, 18 kg – small rooms up to approx. 15–18 m².
• VA 2-035 CN – 3.50/3.50 kW, 2 fans, 1240 × 495 × 200 mm, 25.5 kg – standard living room, 25–35 m².
• VA 2-045 CN – 4.30/4.30 kW, 2 fans, 1240 × 495 × 200 mm, 25.5 kg – larger room, 30–45 m².
• VA 2-075/070 CN (this product) – 7.35/8.05 kW, 3 fans, 1360 × 591 × 200 mm, 32.5 kg – large open spaces over approx. 45–55 m² or commercial premises.

The jump in output between the VA 2-045 CN and VA 2-075 CN is significantly larger than between the other adjacent levels in the series – if your room falls somewhere in between (for example a large room with high heat loss, but not an entire open space), it is worth having an accurate thermal calculation carried out so as not to invest unnecessarily in an oversized unit that would normally operate only at the lowest (and therefore less efficient) speeds.

Hydraulic piping at higher flow rates

At flow rates exceeding 1 l/s (1,400 l/h at the highest speed in heating mode), it is necessary to pay increased attention to sizing the pipework and selecting a circulation pump with sufficient head to cover the unit's pressure drop (up to 46.9 kPa) together with the losses in the piping and fittings themselves. When designing the system, we also recommend allowing a margin for possible future expansion with additional fan coil units on the same circuit.

Thermal insulation of pipework carrying cooling-mode water is even more important at this power level than with the smaller models – a higher flow rate of cold water also means a larger area of piping with a low surface temperature, on which, without high-quality closed-cell insulation (e.g. synthetic rubber), more intensive condensation of air humidity would occur, risking damage to surrounding structures. In terms of operating costs, the fan coil unit remains more economical than an equivalent split air conditioner even at this power level, since the unit's own power consumption (22 to 113 W depending on the speed) represents only a fraction of the energy needed to generate the cooling or heat, which is provided by the heat pump.

Frequently Asked Questions