Baedin Wall-hung Boiler Factory, a domestic Chinese producer, independently designs and manufactures this Atmospheric Condensing Combi Boiler. Featuring premium performance, low operating costs and negligible heat loss, this dual-purpose unit leverages long-standing sophisticated manufacturing know-how and revolutionary heating technologies to perfectly meet heating and ample domestic hot water demands for spacious buildings. With an ultra-high total thermal efficiency hitting 109.8%, it greatly exceeds conventional wall-mounted gas boilers in energy-saving capability and steady running performance.
This Atmospheric Condensing Combi Boiler operates on a completely different principle from standard boilers, adopting net calorific value evaluation that excludes the latent heat within flue gas vapor. It recycles the vaporization latent heat produced in combustion and condensation stages, enabling thermal efficiency to exceed 100% with ease. Return water temperature of the overall heating system dominates the equipment’s energy efficiency. We recommend fitting an outdoor temperature sensor to stabilize low return water temperatures for lasting efficient and smooth operation. To keep the condensing boiler running at its best, return water temperature must be kept below the 50°C dew point.
The central heating gas boiler supports two mainstream heating solutions: traditional radiators and low-temperature underfloor heating. If connected to floor heating, its energy-saving advantage becomes highly noticeable, reducing gas consumption by up to 30%. Its three key highlights are ultra-high energy efficiency, built-in condensing hot water technology and a broad power adjustment scope.
As a green, high-efficiency heating appliance, it operates at low temperatures to drop flue exhaust heat and avoid energy waste. It cuts nitrogen oxide emissions by 80% and carbon monoxide by 90%, effectively easing air contamination. Following international environmental regulations, Baedin persistently develops low-carbon heating and hot water systems to shrink carbon footprints and protect the ecological environment.
Product Parameters & Structural Design Highlights
Built to German manufacturing standards and assembled with fully imported key parts, this central heating gas boiler serves dual purposes: room heating and domestic hot water supply. Six power options (20KW, 24KW, 28KW, 32KW, 36KW, 40KW) cater to heating needs of houses of different sizes. The 32KW, 36KW and 40KW models are equipped with dual circulation pumps by default, offering high water flow and evenly distributed heat along heating pipes.
Leveraging advanced full premixed combustion tech, the boiler achieves a peak thermal efficiency of 109%, lowering running costs by 15%–30% compared with regular wall-mounted boilers. The built-in DC variable frequency module avoids frequent on-off cycling under low load or transitional seasons, achieving intelligent power and gas savings.
Thanks to precise multi-point temperature control, stable hot water is ready in 17±2 seconds, and temperature fluctuation stays under 0.5°C. The internal fast heating component and sensitive temperature sensors deliver instant, constant-temperature hot water for comfortable daily use.
The unit adopts premium 800°C heat-resistant tempered glass panels that look exquisite, resist scratches and are easy to clean and maintain. A large 19cm×17.5cm white backlit LED screen intuitively displays real-time operating status and fault codes. An optional variable-speed auto circulation pump can be chosen to adapt to various heating circuit conditions. It can also be linked to a coil hot water storage tank to meet heavy hot water consumption of large homes and villas.
Imported Core Components List
Key imported components include Italian primary heat exchanger, ceramic fiber burner, DC variable-frequency premixed fan and Italian SIT gas control valve. Additional configurations: patented external air filter, memory alloy water channel, stainless steel plate heat exchanger, heating expansion tank, 800°C tempered glass or metal panel, pressure gauge & water pressure transducer, 3-bar safety pressure relief valve, manual drain valve, water level sensing sealing part
Technical Specifications
Performance / Parameters
Unit
LL1GBQ20
LL1GBQ24
LL1GBQ28
LL1GBQ32
LL1GBQ36
LL1GBQ40
Maximum input power
kW
20.0
24.0
28.0
32.0
36.0
40.0
Minimum input power
kW
8.8
9.6
11.2
12.8
14.4
16.0
Maximum condensing heat output
kW
21.4
25.6
29.9
33.9
38.2
42.4
Minimum condensing heat output
kW
4.2
5.04
5.6
6.7
7.2
8.4
Power supply
~220V 50Hz
~220V 50Hz
~220V 50Hz
~220V 50Hz
~220V 50Hz
~220V 50Hz
Efficiency at maximum output
%
106
106
106
106
106
106
Efficiency at 30% output
%
105
105
105
105
105
105
Expansion tank volume
Litres
6
6
6
8
8
8
Heating temperature range
°C
30-80
30-80
30-80
30-80
30-80
30-80
Domestic hot water temperature range
°C
30-60
30-60
30-60
30-60
30-60
30-60
Domestic hot water output at Δt=25°C
L/min
10.3
12.0
14.0
16.0
18.0
20.0
Minimum domestic hot water flow rate
L/min
2.5
2.5
2.5
2.5
2.5
2.5
Minimum domestic hot water activation pressure
Bar
0.2
0.2
0.2
0.2
0.2
0.2
Minimum operating temperature
°C
1
1
1
1
1
1
Dimensions (H × W × D)
mm
720×400×282
720×400×317
720×400×352
Protection class
IPX4D
IPX4D
IPX4D
IPX4D
IPX4D
IPX4D
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