Vaillant ecoTEC plus VU GB 1206/5-5 120kW single-circut condensing gas boiler

Name: Vaillant ecoTEC plus VU GB 1206/5-5 120kW single-circut condensing gas boiler
Brand: Vaillant
Price: 1 AMD
Availability: InStock

Vaillant ecoTEC plus VU GB 1206/5-5 120kW is a wall-mounted single-circuit condensing gas boiler designed for commercial buildings, large residential properties, and high-performance heating systems. Using advanced condensing technology, this Vaillant 120kW boiler recovers latent heat from flue gases to improve energy efficiency, reduce fuel consumption, and provide reliable heating performance with high seasonal efficiency.

The boiler is equipped with a 20–100% modulating burner, which automatically adjusts the heat output according to the actual heating demand. Featuring a durable stainless steel condensing heat exchanger, electronic combustion control, and integrated eBus communication, the ecoTEC plus VU GB 1206/5-5 ensures efficient, safe, and flexible operation.

The model is suitable for new construction projects, heating system renovation, commercial applications, and large heating installations. It supports indirect domestic hot water production via an external cylinder and allows cascade configurations of up to 6 boilers, enabling total system output of up to 720 kW. The boiler can be integrated with modern heating control systems and is designed for long service life, high reliability, and optimized energy consumption.

Condensing Technology	Utilizes latent heat from flue gases to achieve high energy efficiency and reduced fuel consumption.
20–100% Modulating Burner	Automatically adjusts heating output according to the actual heat demand for efficient operation.
Cascade Configuration	Supports installation of up to 6 boilers in cascade with a total system output of up to 720 kW.
High Operating Pressure	Maximum operating pressure up to 6 bar, suitable for large heating systems and multi-storey buildings.
Stainless Steel Condensing Heat Exchanger	Provides high durability, corrosion resistance, and reliable long-term operation.
Electronic Combustion Control & eBus Communication	Ensures optimized combustion control and enables integration with Vaillant control systems.
Partial Load Adjustment	Allows boiler output configuration according to heating and hot water system requirements.
Low NOx Emissions	Provides environmentally friendly operation with reduced combustion emissions.
Built-in Safety Components	Includes electronic pressure sensor and automatic air vent for safe and reliable operation.

Rated Output	120 kW
Boiler Type	Wall-mounted condensing gas boiler
Installation Type	Wall-mounted
DHW Preparation	Via indirect hot water cylinder
Energy Efficiency Class	A
Efficiency (Hi)	109%
Recommended Heating Area	Up to 1200 m²
Control Type	Buttons and control knobs / external automation options
Maximum Gas Consumption	12.1 m³/h
Remote Control	Via external control systems
Heat Output Range (at 60/40°C), kW	24 – 120
Heat Output (at 80/60°C), kW	22.4 – 112
Heat Exchanger Volume, l	22.5
Flue Gas Temperature (min/max), °C	40 / 85
Flue Gas Mass Flow Rate (min/max), g/s	10.6 / 52.5
Condensate Production (at 40/30°C, pH approx. 3.7), l/h	19.2
Maximum Flow Temperature, °C	85
Flow Temperature Adjustment Range, °C	30 – 85
Maximum Operating Pressure (Heating Circuit), bar	6
Nominal Heating Water Flow Rate, l/h	4490
Power Supply, V/Hz	230 / 50
Maximum Electrical Power Consumption, W	160
Flue / Air Duct Connection, mm	110/160 PP
Gas Connection	R 1" (20 mm)
Heating Circuit Connection	G 1 1/4"
Dimensions (H × W × D), mm	960 × 480 × 603
Weight (empty), kg	90

Heating & DHW Preparation	Suitable for heating systems and domestic hot water production when combined with an indirect cylinder.
Low-Temperature Heating Systems	Compatible with radiator and underfloor heating systems.
New Construction & Renovation	Suitable for new buildings, renovated properties, residential and commercial applications.
Compact Boiler Rooms	Ideal for creating compact heating systems in limited spaces.
Flexible Combustion Air Supply	Allows combustion air intake from inside or outside the building.
Cascade System Installation	Supports wall-mounted cascade configurations with multiple boilers up to 720 kW total output.

Vaillant ecoTEC plus VU GB 1206/5-5 120kW single-circut condensing gas boiler

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Specifications

Installation & Application Options

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