HWB-A11 Reliable Compact Combi Boiler for Space Heating and DHW, Non Condensing

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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 4 output size 20kW, 24kW, 28kW and 32kW.

Product Detail

KEY FACTS AND BENEFITS

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.

TECHNICAL DATA

Model	HWB-A11-20P HWB-A11-20D	HWB-A11-24P HWB-A11-24D	HWB-A11-28P HWB-A11-28D	HWB-A11-32P HWB-A11-32D
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)	740410310	740410310	740410310	740410310

Tags : Combination Boiler for Central Heating and DHW Gas Fired Wall Mounted Standard Efficiency Boiler Instanta Wall Hung Combi Boiler for Floor Heating

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