A gas fired tankless natural draft hot water heater has a draft hood and uses no fan or blower but relies on gravity to expel the exhaust gas out of the house.
It needs no electricity to operate. Even during power outage, user still can get endless hot water. Without moving part like fan or blower, it is more reliable. And it generally costs less than a forced draft water heaters.
Our natural draft models with 10L and 12L capacity are most popular among our customers. Models ranging from 6L-7L-8L-10-12L are available, too. All models can be customized as per customer’s logo.
FEATURES & STRENGTHS
- Wide range temperature adjustment.
- Low water pressure start up.
- High efficient heat exchanger made completely of copper
- Automatic electronic pulse ignition.
- Multiple safety protection, flame out, over pressure protection, over heat protection etc.
- Power and hot water temperature regulation uses easy to read LCD and mechanical knobs
- Battery power supply, No electricity required.
- Compact size and light weight
INTERNAL STRUCTURE
TECHNICAL DATA
| Model | 10L | 12L |
| Rated Heat Load（kW） | 20 | 24 |
| Rated Hot Water Production | 10L/min（△t=25K时） | 12L/min（△t=25K时） |
| Adjustable Hot Water Temperature | 30~85℃ | |
| Gas Consupmtion at Nomial Capacity | LPG 0.16kg/h NG 1.6M3/h | LPG 0.2kg/h NG 2.0 M3/h |
| Efficiency | 84% | 84% |
| Electric Supply | DC 3V | DC 3V |
| Min Working Pressure | 0.02 bar | 0.02 bar |
| Min Working Flow Rate(L/min) | 3 | 3 |
| Fuel Type | LPG/Natural Gas（12T） | LPG/Natural Gas（12T） |
| Rated Gas Pressure（Pa） | 2800/2000 | 2800/2000 |
| Nozzle Diameter | LPG 0.63 NG 0.94 | LPG 0.64 NG 0.98 |
| Flue Gas Temp.at Min Output | 220℃ | 220℃ |
| Flue Gas Temp.at Max Output | 50℃ | 50℃ |
| Dimension(mm) | 580×350×113 | 580×350×113 |
| Package Size(mm) | 720×395×195 | 720×395×195 |
| GW/NW(kg) |
9/10 |
10/11 |
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