Home Wall-hung Combination Boiler HWB-A11 Reliable Non Condensing Gas or LPG Combi Boiler for Space Heating and DHW

HWB-A11 Reliable Non Condensing Gas or LPG Combi Boiler for Space Heating and DHW

Model A11 combination boiler runs on the natural gas or LPG.  The boiler is compact and constructed of tried and tested components.  It is proven reliable and low maintenance.

Available in two versions, bithermic exchanger type and double exchangers type, in 5 output size 20kW, 24kW, 28kW, 32kW and 40kW.

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    T/T, LC at sight
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  • Shipping Port:

    Zhongshan, Guangzhou
  • Product Detail


    • Domestic hot water priority
    • 24kW model can produces up to 12 l/min of domestic hot water at a 25°C rise
    • Program controlled operation system, stable and safe. 
    • Forced draught, no impact on the indoor air quality. 
    • Senior quality burner paired with tactful air distribution for complete combustion, good for environment. 
    • Automatic self-diagnostics, featuring easy to use control panel with back-lit display
    • Special insulation to ensure ultra quiet operation
    • Sealed heating system neatly separated from domestic hot water circulation, preventing heating system from scaling and corrosion.


Model HWB-A11-20P
Fuel Type Natural gas /LPG /Town gas
Rated gas pressure(Pa) 2000(Natural gas) /2800(LPG) /1000(Town gas)
Rated heat load(kW) 20 24 28 32
Heat efficiencty at rated heat load ≧90% ≧90% ≧90% ≧90%
Power supply AC220-50Hz AC220-50Hz AC220-50Hz AC220-50Hz
Rated electric power (W) 110 110 120 120
Water proof protection IPX4 IPX4 IPX4 IPX4
Central Heating
Rated output capacity (kW) 18 21.6 25.2 28.8
Water temperature range (℃) Radiator: 30-80; Underfloor heating: 30-60
Heating area (sq.M) 70-140 80-180 120-220 160-260
water pump lift(m) 5 5 6 6
water pressure for heating system (MPa) 0.1-0.3 0.1-0.3 0.1-0.3 0.1-0.3
expansion tank volume (L) 6 6 6 6
Expansion tank preload (MPa) 0.1 0.1 0.1 0.1
Heating system circuit  Sealed and Forced
Domestic Hot Water
Flow rate △T=25℃(kg/min) 10 12 14 16
Flow rate △T=30℃(kg/min) 8.3 10 11.7 13.7
DHW temperature range(℃) 30~60
Applicable water pressure(MPa) 0.03-0.8 0.03-0.8 0.03-0.8 0.03-0.8
Min.Startup flow rate(L/min) 2.5 2.5 2.5 2.5
Min.turnoff flow rate(L/min) 2 2 2 2
Connector Heating/Gas Inlet: G3/4; DHW Connector: G1/2
Flue spec (mm) Coxial double pipes Φ60-Φ100
Flue pipe length (m) 1 1 1 1
Net weight (kg) 32.8 33 35 35
Normal working noise (dB) <45 <45 <45 <45
Exhaust type Balanced forced draught
Ignition Pulse automatic ignition
Temperature control method Gas proportional modulating
Dimension (mm) 740*410*310 740*410*310 740*410*310 740*410*310

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