Home Wall-hung Combination Boiler High Efficient Condensing Combination Central Heating Boiler HWB L16

High Efficient Condensing Combination Central Heating Boiler HWB L16

HWB-L16 Wall hung condensing combi boiler for space heating with high efficiency over 99% to 101% . The unit uses a stainless steel secondary heat exchanger to absorb heat from exhaust smoke.
The boiler comes with heat output 24kW and 28kW, all models are available in two versions, bithermic exchanger versions and double heat exchangers version.

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    T/T, LC at sight
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    Zhongshan, Guangzhou
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  • Product Detail


  • High efficiency up to 99%, fuel saving by 30% versus conventional combi boilers. Secondary heat exchanger absorbs heat in the exhaust smoke, thus increase heat efficiency by 10% and exhaust gas temperature is below 60℃.
  • Secondary heat exchanger is made from superior stainless steel. It features excellent heat conductivity and anti-corrosion. More endurable.  
  • Non-premixed condensing boiler with comparatively simple controller, friendly to the serviceman. 
  • Hot water temperature can be fine tuned and automatically stabilized. Highly sensitive sensor enables immediate and precise feedback of real-time water temperature. 
  • Senior quality burner paired with tactful air distribution for complete combustion, sound for environment. 
  • 9 ways of protections ensure safety, including two levels of frost protection which offers flexibility for location of installation, automatic pump running every 24 hours to prevent pump clamping, limit temperature protection etc


Fuel Type Natural gas /LPG
Rated gas pressure(Pa) 2000(Natural gas) /2800(LPG) 
Rated heat load(kW) 24 28
Heat efficiencty at rated heat load >99% >99%
Power supply AC220-50Hz AC220-50Hz
Rated electric power (W) 125 135
Water proof protection IPX4 IPX4
Central Heating
Rated output capacity (kW) 23.8 27.8
Water temperature range () Radiator: 30-80; Underfloor heating: 30-60
Heating area (sq.M 80-180 120-220
Water pump liftm) 5 6
Water pressure for heating system (MPa) 0.1-0.3 0.1-0.3
Expansion tank volume (L) 6 6
Expansion tank preload MPa 0.1 0.1
Heating system circuit  Sealed and Forced
Domestic hot water
Flow rate T=25(kg/min) 12 14
Flow rate T=30(kg/min) 10.5 12
DHW temperature range() 30-60
Applicable water pressure(MPa) 0.03-0.8 0.03-0.8
Min.Startup flow rate(L/min) 2.5 2.5
Min.turnoff flow rate(L/min) 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
Net weight (kg) 40.5 40.5
Normal working noise (dB) <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
Package size (mm) 848*488*400 848*488*400

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    If you are interested in our products and want to know more details,please leave a message here,we will reply you as soon as we can.

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