HWB-A17 gas space heating wall mount combination boiler features simple operation with user friendly LED display and endurability.
The unit is availabe in bithermic exchanger type and double exchangers type with 4 capacity sizes, 18kW, 20kW, 24kW and 28kW.
KEY FACTS AND BENEFITS
TECHNICAL DATA
| Model |
HWB-A17-18P HWB-A17-18D |
HWB-A17-20P HWB-A17-20D |
HWB-A17-24P HWB-A17-24D |
HWB-A17-28P HWB-A17-28D |
| Fuel Type | Natural gas /LPG /Town gas | |||
| Rated gas pressure(Pa) | 2000(Natural gas) /2800(LPG) /1000(Town gas) | |||
| Rated heat load(kW) | 18 | 20 | 24 | 28 |
| 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 | 110 | 120 |
| Water proof protection | IPX4 | IPX4 | IPX4 | IPX4 |
| Central Heating | ||||
| Rated output capacity (kW) | 16.2 | 18 | 21.6 | 25.2 |
| Water temperature range (℃) | Radiator: 30-80; Underfloor heating: 30-60 | |||
| Heating area (sq.M） | 50-120 | 70-140 | 80-180 | 120-220 |
| Water pump lift（m) | 5 | 5 | 5 | 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) | 9 | 10 | 12 | 14 |
| Flow rate △T=30℃(kg/min) | 7.5 | 8.3 | 10 | 11.7 |
| 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 | 32.8 | 33 | 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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