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.
KEY FACTS AND BENEFITS
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) | 740*410*310 | 740*410*310 | 740*410*310 | 740*410*310 |
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