Heat pump flexoTHERM exclusive VWF 57/4 Modul VWZ NC 11 for passive cooling Controller sensoCOMFORT 720 Internet gateway VR 940f
Code: 0010020695Related products
Product detailed description
Heat pump Vaillant flexoTHERM exclusive VWF 57/4 with passive cooling module VWZ NC 11
Vaillant flexoTHERM exclusive VWF 57/4 is the smallest model in the flexoTHERM exclusive range – a ground/water (brine/water) heat pump fully installed indoors in a single white cabinet with dimensions 1183 × 595 × 600 mm (height × width × depth). Only a pipe with non-freezing brine leads out of the house to a ground collector or geothermal borehole, or to a well in the water/water version. This particular configuration also includes the Vaillant VWZ NC 11 passive cooling module, which in summer will transform the same heating system (underfloor heating or fancoils) into a gentle and highly energy-efficient cooling system.
Heating capacity and basic parameters of VWF 57/4
- Heating capacity at B0/W35 (ΔT 5 K, EN 14511): 5.28 kW
- Power consumption at B0/W35: approx. 1.20 kW
- COP (heating factor) at B0/W35: 4.41
- Refrigerant: R410A
- Cabinet dimensions: 1183 mm (h) × 595 mm (w) × 600 mm (d)
- Weight of the assembly (pump + VWZ NC 11 module): approx. 160 kg
- Heating energy class: A+++ at 35 °C / A++ at 55 °C
- Control: Ekvithermic controller sensoCOMFORT (VRC 720) included in the package
- Internet gateway: VR 940f with myVAILLANT app
Passive cooling module VWZ NC 11 – how it works
Passive cooling (also known as "natural cooling") does not use a compressor or a reversed refrigeration cycle as in classic air conditioning – it only uses cold brine flowing from a geothermal borehole or collector, which has a stable temperature of around 10 – 15 °C even in summer. The VWZ NC 11 module contains a plate heat exchanger, an electrically controlled three-way valve with a servomotor, and dew point regulation, which delivers the cold brine directly into the heating circuit (underfloor heating or fancoils) while at the same time preventing condensation of moisture on the pipes or floor. This makes the operation exceptionally quiet and energy-efficient – only electricity is consumed for the circulation pump and control electronics, no compressor is switched on. The temperature setting range is approximately 7 to 24 °C, and the cooling capacity of the module ranges from about 5 to 11 kW depending on conditions and the sizing of the heating/cooling system. The module is suitable for glycol-based media, not for ethanol-based circuits.
The result is not a full-fledged air conditioning system with a significant temperature drop, but a pleasant reduction in indoor temperature by a few degrees compared to the outside temperature on hot summer days – ideal for a bedroom or living room, where a gentle and quiet cooling without the draft from an air conditioning unit is sufficient.
sensoCOMFORT 720 controller and internet gateway VR 940f
The sensoCOMFORT thermostatic controller (VRC 720 series) controls both the heating and cooling modes, automatically switching between heating in winter and passive cooling in summer according to the set programs and indoor/outdoor temperatures. The internet gateway VR 940f connects the system to the home WiFi network and makes it accessible via the free myVAILLANT app – from your phone you can monitor and adjust temperatures, heating and cooling schedules, switch operating modes, and in the event of a fault you will receive a direct notification on your mobile.
Preparation of hot domestic water
The VWF 57/4 model is combined with a separate standing hot water storage heater from Vaillant (e.g. uniSTOR or actoSTOR), whose volume is selected according to the number of residents and bathrooms in the household – for a smaller family home, a storage tank with a volume of 150 – 200 liters is usually sufficient.
Installation and ground heat source
For a capacity of 5.28 kW, a shorter geothermal borehole (approximately 60 – 90 m according to the geological assessment) or a horizontal ground collector with sufficient land area is usually sufficient. The same ground heat source is used in winter for heating and in summer for passive cooling via the VWZ NC 11 module – no additional external cooling circuit or unit is required. The design of the borehole depth or collector length should be prepared by a professional engineering firm based on the thermal loss of the house and the planned summer cooling capacity. Commissioning, including the passive cooling module, is carried out exclusively by an authorized Vaillant service technician, which is a condition for the warranty to be valid.
Compatible accessories
- Vaillant uniSTOR / actoSTOR hot water storage heaters of various volumes
- Mixing module for a second heating circuit
- Remote room control / room temperature sensor for more precise control of heating and cooling
- Set for photovoltaic control (smart grid ready)
Who is this configuration suitable for
This combination is ideal for smaller and medium-sized new builds with underfloor heating, where the investor, in addition to reliable year-round heating and hot water preparation, also appreciates the possibility of gentle summer cooling without an additional air conditioning unit, extra external components or increased electricity consumption typical of active (compressor-based) cooling.
Frequently asked questions (FAQ)
How does passive cooling differ from air conditioning?
It does not use a compressor or a reversed refrigeration cycle, only cold brine from the ground – it is quieter and more energy-efficient, but achieves a milder cooling effect (usually a few degrees below the outside temperature, not deep air conditioning).
Do I need to buy an additional outdoor unit for cooling?
No, the VWZ NC 11 module uses the same ground source and the same heating system (underfloor heating/fancoils) as in winter for heating.
How is the cooling distributed into the rooms?
Most commonly through underfloor heating, or through properly dimensioned fancoils.
Does the module handle condensation of moisture?
Yes, it includes dew point regulation that protects the floor and pipes from moisture condensation during cooling.
Who performs the installation and commissioning?
Groundwork is carried out by a specialized drilling company, the actual connection of the heat pump and cooling module and the start-up of the system must be performed by an authorized Vaillant service partner.
Quiet operation and Sound Safe technology
Like the entire flexoTHERM exclusive range, this model also has no outdoor unit or outdoor fan – thanks to the acoustically insulated cabinet (Sound Safe technology), the operation is very quiet, and this also applies to the summer passive cooling mode, when only the circulation pump runs without any compressor noise typical of classic air conditioning.
Service and warranty
The heat pump and the passive cooling module must be commissioned exclusively by an authorized Vaillant service partner, who will set up the control for both modes (heating and cooling) and check the functionality of the dew point sensor. A regular annual service inspection is recommended for the long life of the equipment and is usually a condition for an extended warranty. Thanks to the internet gateway VR 940f, the service technician can verify operational values remotely in many cases.
The parameters mentioned are based on the technical documentation from Vaillant (installation instructions for flexoTHERM exclusive VWF 57 – 197/4, installation instructions for the passive cooling module VWZ NC 11/4, energy label according to EU regulation 811/2013). The exact heating and cooling performance in a specific building depends on the sizing of the ground source and the heating/cooling system.
Additional parameters
| Category: | Ground Water Heat Pumps |
|---|---|
| Warranty: | 2 years |
| Weight: | 100 kg |
| Heat pump type: | Ground/water (brine/water) with passive cooling module |
| Heating output (B0/W35): | 5.28 kW |
| COP (B0/W35): | 4.41 |
| Refrigerant: | R410A |
| Passive cooling module: | VWZ NC 11 (5-11 kW, range 7-24°C) |
| Heating energy efficiency class: | A+++ (35°C) / A++ (55°C) |
| Dimensions (H×W×D): | 1183 × 595 × 600 mm |
| Controller: | sensoCOMFORT 720 (VRC 720) |
| Internet gateway: | VR 940f / myVAILLANT |
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O spoločnosti
Skupina Vaillant Group je synonymom vykurovania a prípravy teplej vody, pričom hlavný dôraz kladie na kvalitu, spoľahlivosť a užívateľský komfort. Jej produkty tepelnej techniky sú zastúpené vo viac ako 100 krajinách sveta. Združuje značky Vaillant, Saunier Duval, AWB, Bulex, DemirDöküm, Glow worm, Hermann Saunier Duval a Protherm. Každá z týchto značiek má s výrobou vykurovacích zariadení bohaté skúsenosti, pretože väčšina z nich je v danom segmente viac ako 80 rokov. So svojím 140 rokov dlhým pôsobením na trhu však patrí hlavne značka Vaillant k tým najväčším a najvýznamnejším. Dlhodobo je lídrom na trhu a priekopníkom vo vývoji a inováciách v oblasti vykurovacích technológií v Európe. Skupina Vaillant Group má vybudovanú rozsiahlu sieť obchodných zastúpení a tisíce spokojných zákazníkov po celom svete.
Do bohatého portfólia Vaillant Group patria moderné technológie vykurovania, ktoré sú energeticky úsporné, efektívne a prispievajú k ochrane životného prostredia. Vďaka širokému spektru produktov a modelov si tu každý zákazník nájde presne to, čo potrebuje. Sortiment zahŕňa závesné a stacionárne kotly, zásobníky teplej vody či elektrické spotrebiče. Na trhu závesných kotlov je spoločnosť s 26 percentným podielom dokonca číslom jedna v Európe. Vaillant Group sa nešpecializuje len na vývoj a výrobu kotlov, do jej produktového portfólia patria aj technológie využívajúce obnoviteľné zdroje energie, ako sú solárne systémy či najmodernejšie tepelné čerpadlá a klimatizácie. Užívateľom ponúka tiež rekuperačné alebo kogeneračné jednotky či zeolitové tepelné čerpadlá.
Vaillant Group myslí každý deň dopredu a ponúka individuálne riešenia pre každú potrebu a každý druh energie. Jej úspech je založený tiež na výskume a vývoji, ktorý vždy prebieha v súlade so želaniami zákazníkov. Oddelenie výskumu a vývoja spoločnosti patrí k najväčším a predovšetkým k najkreativnejším oddeleniam v tomto segmente. Tím vývojárov neustále pracuje na nových zariadeniach a technologických systémoch, ktoré sa čoraz jednoduchšie obsluhujú a ktoré už dnes spĺňajú požiadavky zajtrajška. Či ide o energetické riešenia budúcnosti, alebo o najlepší spôsob ako využiť fosílne palivá, spoločnosť Vaillant Group sa snaží predvídať nové trendy a byť vždy o krok dopredu pred ostatnými. Dôkazom toho je aj každoročné prihlásenie až 100 nových patentov. V oblasti výroby kladie firma najväčší dôraz na dosiahnutie najvyššej kvality kotlov, ktorá predstavuje dokonalosť do najmenšieho detailu.
Vaillant Group má svoje zastúpenie vo väčšine krajín sveta. Výnimkou nie je ani Slovensko, kde sídli spoločnosť Vaillant Group Slovakia, s. r. o. zastupujúca značky Vaillant a Protherm. Vykurovacie zariadenia Vaillant Group sa vyrábajú v siedmich výrobných závodoch, pričom až dva z nich sa nachádzajú na území našej krajiny. Tieto fabriky zamestnávajú spolu viac ako 1 300 ľudí. Výrobný závod Protherm Production so sídlom v Skalici sa špecializuje na výrobu elektrokotlov a stacionárnych kotlov pre všetky značky patriace do skupiny Vaillant Group. Môže sa pochváliť aj vlastným vývojovým centrom, ktoré patrí k najmodernejším v Európe. Druhým výrobným závodom na Slovensku je Vaillant Industrial Slovakia v Trenčianskych Stankovciach, ktorý pre celú skupinu vyrába moduly pre závesné kotly.
Udržateľnosť
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