Wall-Hung Boiler Gas, Non-Condensing CombiatmoTEC pro

A proven non-condensing wall-hung gas boiler for heating and hot water.

A boiler renowned for its robustness
A premium replacement for multi‑family houses
Delivers instantaneous DHW in high quantities
Exceptional sound insulation
An ErP‑compliant replacement with low investment
Online boiler monitoring with sensoROOM

The atmoTEC pro wall‑hung boiler provides heating and instantaneous domestic hot water for apartment buildings. It runs exceptionally quietly and is built on solid, proven premium‑brand technology. As an ErP‑compliant replacement for outdated systems, it helps you modernise efficiently. Low‑NOx technology ensures reduced emissions and optimised efficiency for a non‑condensing boiler.

Ideal for:

Heating
Hot water

Technical data table overline

Technical data table headline

atmoTEC pro
VUW 240/5-3	VUW 280/5-3 (H)

Power Output and Efficiency

Heat Output 80/60 °C (G20) (min - max)	Heat Output 80/60 °C (G20) (min - max)	9,1 - 24,0 kW	10,7 - 28,0 kW
Heat Output (Domestic Hotwater Mode) (max)	Heat Output (Domestic Hotwater Mode) (max)	24,0 kW	28,0 kW
Gas Flow Rate, G20	Gas Flow Rate, G20	2,8 m³/h	3,3 m³/h
Gas Flow Rate, G31	Gas Flow Rate, G31	1,91 kg/h	2,08 kg/h

Combustion

Flue Gas Mass Flow Rate (min)	Flue Gas Mass Flow Rate (min)	20,96 g/s	22,85 g/s
Flue Gas Temperature at 80/60 °C (min - max)	Flue Gas Temperature at 80/60 °C (min - max)	80 - 109 °C	85 - 113 °C

Domestic Hot Water

Continuous Domestic Hot Water Output (Δt = 30 K)	Continuous Domestic Hot Water Output (Δt = 30 K)	11,5 l/min	13,4 l/min

Electrical Connection

Electrical Power Consumption incl. Pump (Domestic Hotwater Mode) (max)	Electrical Power Consumption incl. Pump (Domestic Hotwater Mode) (max)	93 W	93 W
Electrical Voltage Supply	Electrical Voltage Supply	230 V (50 Hz)	230 V (50 Hz)
IP Rating¹	IP Rating¹	-	IPX4D

Hydraulics

Pump Volume Flow / Remaining pressure head at ΔT=20 K	Pump Volume Flow / Remaining pressure head at ΔT=20 K	1.032 l/h / 220 mbar	1.206 l/h / 340 mbar
Expansion Vessel Volume	Expansion Vessel Volume	6 l	6 l
Pressure Expansion Vessel	Pressure Expansion Vessel	0,75 bar	0,75 bar

Connections

Connection Dimension Heating (Flow, Return)	Connection Dimension Heating (Flow, Return)	G ¾″	G ¾″
Connection Dimension Cold Water, Domestic Hot Water	Connection Dimension Cold Water, Domestic Hot Water	G ¾″	G ¾″
Connection Dimension Natural Gas	Connection Dimension Natural Gas	G ¾″	G ¾″
Connection Dimension Flue Gas	Connection Dimension Flue Gas	Ø 130 mm	Ø 130 mm

Dimensions

Height / Width / Depth	Height / Width / Depth	800 mm / 440 mm / 338 mm	800 mm / 440 mm / 338 mm
Weight	Weight	36 kg	42 kg

Limitations

Operating Pressure Heating (max)	Operating Pressure Heating (max)	3 bar	3 bar
Temperature Domestic Hot Water (min - max)	Temperature Domestic Hot Water (min - max)	35 - 65 °C	35 - 65 °C
Operating Pressure Domestic Hot Water (max)	Operating Pressure Domestic Hot Water (max)	10 bar	10 bar
Flow Temperature (max)	Flow Temperature (max)	-	85 °C

Conformity-IDs

Gas Category	Gas Category	II2H3B/P	II2H3B/P
CE PIN	CE PIN	-	CE-0063CQ3977

¹EN 60529