SKU: 0010024661

Vaillant ecoTEC plus VUW 40CS/1-5 dual-circuit condensing gas boiler

Name: Vaillant ecoTEC plus VUW 40CS/1-5 dual-circuit condensing gas boiler
Brand: Vaillant
SKU: 0010024661
Availability: InStock

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Vaillant ecoTEC plus VUW 40 CS/1-5 is a 40 kW wall-mounted condensing combi gas boiler designed for residential heating and domestic hot water production. The model is equipped with an integrated plate heat exchanger, touch controls with LED backlight, and advanced condensing technology, ensuring high efficiency, reduced gas consumption, and reliable operation.

The boiler features a 1:10 modulation range burner and the IoniDetect combustion control system, which automatically adapts the gas-air ratio according to gas quality for stable and efficient combustion. It also includes aquaPOWER plus and Hot Start functions, providing enhanced domestic hot water comfort and faster hot water availability.

Vaillant ecoTEC plus VUW 40 CS/1-5 is compatible with modern Vaillant control systems, including eBUS, LIN-bus, and sensoNET internet module, delivering advanced diagnostics, convenient control, energy efficiency, and reliable long-term performance. The boiler is manufactured in Germany according to Vaillant’s high quality standards.

Energy Efficiency Class (A++–G) – Heating	A
Energy Efficiency Class (A–G) – Domestic Hot Water (DHW)	A
Heat output (50/30°C mode)	4.2–35.7 kW
Heat output (80/60°C mode)	4.0–34.8 kW
Heat output in DHW mode	39.7 kW
Domestic hot water flow rate (ΔT=30°C)	19.4 l/min
Minimum water flow rate	2 l/min
Flue gas temperature (min/max)	35/80°C
Flue gas mass flow rate (min/max)	1.97/21.13 g/s
Condensate production (pH 3.5–4) in 50/30°C mode	3.57 l/h
Residual head of circulation pump (nominal)	250 mbar
Maximum flow temperature	85°C
Maximum domestic hot water temperature	65°C
Maximum operating pressure (heating circuit)	3 bar
Maximum operating pressure (water circuit)	10 bar
Nominal heating water flow rate	1498 l/h
Power supply	230 V / 50 Hz
Maximum power consumption	125 W
Connections
Connection	Value
Flue / air duct	60/100 mm
Gas connection	15 mm
Heating circuit connections	G 3/4"
Domestic hot water (DHW) connections	G 3/4"
Dimensions and Weight
Parameter	Value
Dimensions (H × W × D)	720 × 440 × 382 mm
Weight (empty)	42 kg

IoniDetect Gas Adaptation System	Automatically adjusts the gas-air ratio to ensure stable and efficient combustion according to different gas qualities
1:10 Modulation Range	Enables precise output adjustment and improved energy efficiency
LIN-bus Communication System	Provides access to additional data for advanced boiler settings and diagnostics
Heating System Resistance Monitoring	Optimizes pump operation, reduces hydraulic noise, and enables operation without a bypass valve
Automatic Filling and Pressure Monitoring System	Simplifies maintenance and ensures safe operation
Setup Assistant and Graphic Display	Enables quick and easy commissioning and configuration
Energy and Gas Consumption Monitoring	Allows monitoring of energy and gas consumption data
aquaPOWER plus and Hot Start Functions	Provide faster hot water availability and increased domestic hot water comfort
Low Noise Operation	Ensures comfortable operation in residential environments
Remote Control Capability	Allows internet-based control and diagnostics via the sensoNET module
Recyclable Materials Usage	Manufactured using materials suitable for recycling
Made in Germany	Produced according to Vaillant’s high quality standards

High-efficiency Pump	Provides optimized heating system performance with reduced energy consumption
Water Pressure Sensor	Monitors the heating system pressure
10-liter Expansion Tank	Compensates pressure changes in the heating circuit
Stainless Steel Condensing Heat Exchanger	Provides high durability and extended service life
Integrated Domestic Hot Water System	Provides rapid domestic hot water preparation through built-in flow heating
Priority Switching Valve	Controls the priority of domestic hot water heating
Touch Control Panel with LED Backlight	Provides simple and intuitive operation
DIA Diagnostic System	Simplifies fault detection and maintenance
eBUS Digital Communication System	Enables advanced system control and configuration
LIN-bus System	Provides additional diagnostic data and advanced boiler settings

Wall-mounted Installation	Compact wall-mounted condensing boiler design
Heating Systems	Compatible with various heating systems, including low-temperature systems
Radiator Heating Systems	Suitable for traditional radiator heating installations
Underfloor / Panel Heating Systems	Compatible with low-temperature floor heating applications
New Construction and Renovation Projects	Suitable for apartments, private houses, and renovated buildings
Combustion Air Supply	Allows combustion air intake from inside or outside the building
Flue and Air Duct Systems	Compatible with certified Vaillant flue and air duct systems
Cascade Installation	Can be used in cascade heating systems according to system design requirements

Vaillant ecoTEC plus VUW 40CS/1-5 dual-circuit condensing gas boiler

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