The DHB STi thermotronic is an interesting entry into the comfort class. It offers the output of an advanced electronic instantaneous water heater at the cost price of a lower/middle segment product. Amongst its benefits are primarily its energy efficiency and the convenience of the pre-selected DHW temperature always being maintained. It prevents temperature fluctuations caused by output changes. As a result, the show…

Feature :

‧Three stage temperature pre-selection, around 35℃,45℃,55℃

‧Child-proof system

‧Saves up to 20 % energy compared to cylinder systems
‧2 years Warranty
‧Profi-Rapid® for a quick installation
‧For hard and soft water
More Function:
  • 18 kW, 21 kW, 24 kW or 27 kW (depending on model)
  • 9.2 – 13.8 l/min (depending on model)
  • Electronic safety system with air detection
  • Anti-scalding protection set to 43℃
  • Bare wire heating system
  • Hoseproof to IP25
  • Comfort Wired Remote control (optional)
*Compared hydraulic instantaneous water heaters; subject to pattern of use.

Easy Adjustment :

Remote Control : (Optional)

DHB STi series is compatible with wired remote control, easier access and increasing the flexibility while using.


Model DHB 18 STi DHB 21 STi DHB 24 STi DHB 27 STi

Power rating(400V)kW










Size(H/W/D)mm 470 x 225 x 110
Temperature range 35℃, 45℃, 55℃
Working pressure 10 Bar
Starting volume ≧3L
Protection level IP25
Inlet size 15mm(G1/2″)
Weight 3.6kg
Control unit Electronic Control
Unit type Centralized
Bare wire heating system
Elect. air detetion system
Elect. safety system with temp. cut-off device