1. Infinite frequency conversion fan, silent operation
2. European type gas proportional adjustment with accurate temperature
3. Anti-electromagnetic interference device, work more stable
4. Use stainless steel heat exchanger to make boiler anti-fouling, adapt to water quality
5. Coaxial flue exhaust smoke, to be more safe
6. 36 kinds of heavy safety protection function, to be more safe and reliable
7. Three-level antifreeze function, and safe operation at low temperature
8. Low water pressure start, regardless of low water pressure and floor height