Wall-Hung Boiler Gas, CondensingecoTEC plus VUW 10-35 kW

Powerful performance in a timeless design.

Double A for performance in heating and domestic hot water production
Gas adaptivity IoniDetect: Technology that anticipates
Smart App control
High modulation for optimal energy efficiency
Ready for green gas and 20% hydrogen
Flat design and semi-touch display

ecoTEC plus is an economical condensing boiler that boasts high heating energy efficiency of up to 94%. ecoTEC plus is one of the best combi solutions available today – extremely reliable and displaying all the in-built quality Vaillant is known for. Available in a range of power outputs from 20 kW to 36 kW, the ecoTEC plus has been remastered to create a stylish, modern and extremely efficient boiler, perfect for any home. They offer highest product quality, can be conveniently controlled via sensoApp and can use up to 20% hydrogen or green gases with outputs from 25 kW to 35 kW. Rated A according to the ErP for its heating energy efficiency, it will reach class A+ when connected to a programmable weather-compensated thermostat.

Ideal for:

Heating
Hot water

Technical data table overline

Technical data table headline

ecoTEC plus
VUW 26CS/1-5 (N-INT3)	VUW 26CS/1-5 (N-INT4)	VUW 32CS/1-5 (N-INT3)	VUW 36CS/1-5 (N-INT3)	VUW 36CS/1-5 (N-INT4)	VUW 40CS/1-5 (N-INT3)

ErP

ErP Seasonal Space Heating Efficiency Class	ErP Seasonal Space Heating Efficiency Class
ErP Water Heating Energy Efficiency Class Of Combination Heater	ErP Water Heating Energy Efficiency Class Of Combination Heater
ErP Seasonal Space Heating Energy Efficiency	ErP Seasonal Space Heating Energy Efficiency	94 %	-	94 %	94 %	-	94 %
ErP Water Heating Energy Efficiency	ErP Water Heating Energy Efficiency	85 %	-	85 %	84 %	-	85 %

ecoTEC plus
VUW 26CS/1-5 (N-INT3)	VUW 26CS/1-5 (N-INT4)	VUW 32CS/1-5 (N-INT3)	VUW 36CS/1-5 (N-INT3)	VUW 36CS/1-5 (N-INT4)	VUW 40CS/1-5 (N-INT3)

Power Output and Efficiency

Heat Output 50/30 °C (G20) (min - max)	Heat Output 50/30 °C (G20) (min - max)	2,8 - 21,7 kW	2,7 - 21,0 kW	-	3,9 - 33,3 kW	3,9 - 32,3 kW	4,3 - 37,7 kW
Heat Output 50/30 °C (G31) (min - max)	Heat Output 50/30 °C (G31) (min - max)	5,4 - 21,1 kW	5,5 - 21,0 kW	8,4 - 27,0 kW	8,4 - 33,3 kW	8,6 - 31,3 kW	-
Heat Output 80/60 °C (G20) (min - max)	Heat Output 80/60 °C (G20) (min - max)	2,5 - 19,8 kW	2,4 - 19,7 kW	-	3,5 - 29,9 kW	3,4 - 29,8 kW	4 - 34,8 kW
Heat Output 80/60 °C (G31) (min - max)	Heat Output 80/60 °C (G31) (min - max)	4,8 - 19,8 kW	4,9 - 19,7 kW	7,8 - 25,0 kW	7,8 - 29,9 kW	7,6 - 29,8 kW	-
Heat Output (G31) (Domestic Hotwater Mode) (max)	Heat Output (G31) (Domestic Hotwater Mode) (max)	25,4 kW	25,4 kW	31,8 kW	34,4 kW	34,8 kW	-
Heat Output (G20) (Domestic Hotwater Mode) (max)	Heat Output (G20) (Domestic Hotwater Mode) (max)	25,7 kW	26,0 kW	-	35,6 kW	35,6 kW	39,7 kW
Efficiency (G20, G31) (Domestic Hotwater Mode)	Efficiency (G20, G31) (Domestic Hotwater Mode)	97,3 %	98 %	-	98 %	-	-
Efficiency (G20, G31) (30% acc. to EN 15502)	Efficiency (G20, G31) (30% acc. to EN 15502)	109,8 %	110 %	-	110 %	-	-
Gas Flow Rate, G20	Gas Flow Rate, G20	2,8 m³/h	2,8 m³/h	3,4 m³/h	3,9 m³/h	3,9 m³/h	4,3 m³/h
Gas Flow Rate, G31	Gas Flow Rate, G31	2,0 kg/h	1,1 m³/h	1,3 kg/h	1,45 m³/h	2,8 kg/h	-
Efficiency (G20) (30% acc. to EN 15502)	Efficiency (G20) (30% acc. to EN 15502)	-	-	-	-	-	110 %
Efficiency (G20) (Domestic Hotwater Mode)	Efficiency (G20) (Domestic Hotwater Mode)	-	-	-	-	-	98 %

Domestic Hot Water

Specific Rate D (Δt = 30 K)	Specific Rate D (Δt = 30 K)	12,3 l/min	12,4 l/min	15,1 l/min	17,0 l/min	17 l/min	18,9 l/min
Overall Performance Factor²	Overall Performance Factor²	-	***	-	-	-	-

Electrical Connection

Electrical Power Consumption incl. Pump (Heating Mode) (max)	Electrical Power Consumption incl. Pump (Heating Mode) (max)	87 W	-	60 W	90 W	90 W	95 W
Electrical Power Consumption incl. Pump (Domestic Hotwater Mode) (max)	Electrical Power Consumption incl. Pump (Domestic Hotwater Mode) (max)	110 W	110 W	95 W	110 W	110 W	125 W
Electrical Power Consumption incl. Pump (standby)	Electrical Power Consumption incl. Pump (standby)	﹤ 2 W	2 W	﹤ 2 W	﹤ 2 W	﹤ 2 W	﹤ 2 W
Electrical Voltage Supply	Electrical Voltage Supply	230 V (50 Hz)	-	230 V (50 Hz)	230 V (50 Hz)	230 V (50 Hz)	230 V (50 Hz)
IP Rating¹	IP Rating¹	IPX4D	-	IPX4D	IPX4D	IPX4D	IPX4D
Power Modulation Type	Power Modulation Type	-	modulating	-	-	-	-
Electrical Connection Type	Electrical Connection Type	-	Cable Connection	-	-	-	-

Operation Fluids

Amount Of Condensates at 50/30 °C	Amount Of Condensates at 50/30 °C	2,04 l/h	2,04 l/h	2,55 l/h	3,06 l/h	3,06 l/h	3,56 l/h

Hydraulics

Pump Volume Flow / Remaining pressure head at ΔT=20 K	Pump Volume Flow / Remaining pressure head at ΔT=20 K	851 l/h / 250 mbar	-	1.068 l/h / 250 mbar	1.281 l/h / 250 mbar	1.281 l/h / 250 mbar	1.498 l/h / 250 mbar
Expansion Vessel Volume	Expansion Vessel Volume	10 l	10 l	10 l	10 l	-	10 l
Pressure Expansion Vessel	Pressure Expansion Vessel	0,75 bar	0,75 bar	0,75 bar	0,75 bar	-	0,75 bar

Material / Color

Color	Color	-	white	-	-	-	-

Connections

Connection Dimension Natural Gas	Connection Dimension Natural Gas	Ø 15 mm	Ø 15 mm	Ø 15 mm	Ø 15 mm	Ø 15 mm	Ø 15 mm
Connection Dimension Heating (Flow, Return)	Connection Dimension Heating (Flow, Return)	G ¾″	G ¾″	G ¾″	G ¾″	G ¾″	G ¾″
Connection Dimension Combustion Air, Flue Gas	Connection Dimension Combustion Air, Flue Gas	Ø 60/100 mm	Ø 60/100 mm	Ø 60/100 mm	Ø 80/125 mm	Ø 60/100 mm	Ø 80/125 mm
Connection Dimension Cold Water, Domestic Hot Water	Connection Dimension Cold Water, Domestic Hot Water	G ¾″	G ¾″	G ¾″	G ¾″	G ¾″	G ¾″

Dimensions

Height / Width / Depth	Height / Width / Depth	720 mm / 440 mm / 348 mm	-	720 mm / 440 mm / 348 mm	720 mm / 440 mm / 348 mm	720 mm / 440 mm / 348 mm	720 mm / 440 mm / 382 mm
Weight	Weight	34 kg	-	36 kg	37 kg	36 kg	40 kg

Limitations

Flow Temperature (max)	Flow Temperature (max)	85 °C	85 °C	85 °C	85 °C	85 °C	85 °C
Operating Pressure Heating (max)	Operating Pressure Heating (max)	3 bar	3 bar	3 bar	3 bar	3 bar	3 bar