Electrical boiler

DBE OPTIMA

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The DBE OPTIMA electrical boiler is an advanced heating device ensuring service-free and safe operation. Boiler operates without emission of flue gas, what makes it one of the safest equipment dedicated for the central heating or domestic heating water systems.

Does not emit any pollutants or gases hazardous to the environment. The assembly is relatively simple and does not require high financial efforts. The boiler can be operated as a primary heating source, particularly in homes with good thermal insulation and floor heating operating on low-temperature parameters and may become the best option to choose.

It may also be operated as a secondary heat source for solid fuel, condensing boiler, fireplace, or even heat pump in the more severe winter conditions. Boiler efficiency (99.5%) allows quick obtaining of the required temperature in the room. Electric boilers from DEFRO are ideal solution for cooperation with PV system. The solutions implemented in the boilers allow increasing the auto-consumption level, what considerably shortens the return-on-investment time for the photovoltaic system. Full control of boiler from the mobile app allows controlling the boiler functions from the smartphone.”

 

Advantages of DEFRO DBE OPTIMA boiler:

  • safe and environmentally friendly
  • modulation of boiler maximum power
  • daily/weekly programmer of boiler operation
  • optional WiFi control
  • optional cooperation with dhw heat exchanger
  • boiler operating range from 8 to 24kW
  • cooperation with photovoltaic system
  • servicing of mixing valve and additional central heating pump
  • programmer for electricity consumption
  • operation in open and closed central heating systems
  • ideal for operation with floor and radiator heating
  • antifreeze system
  • antistop system
  • advanced system for cooling of boiler components
  • operating range from 5 to 80°C
  • ideal for cooperation with other heat source (heat pump, gas boiler, solid-fuel and fireplace)

 

 

 

 

Parameter

Unit of measure

DEFRO DBE OPTIMA

2,7/5,4/8,1

4,0/8,0/12,0

5,4/10,8/16,2

8,0/16,0/24,0

Rated power of one phase (single heater)

kW

2,7

4,0

5,4

8,0

Rated power of three phases (all heaters)

kW

8,1

12,0

16,2

24,0

Supply

single-phase network

V

1 × 230 V / 50 Hz

-

three-phase network

3 × 400 V / 50 Hz

Fuses

single-phase network

A

1 × 40

1 × 63

-

three-phase network

3 × 16

3 × 20

3 × 25

3 × 40

Nominal power consumption

single-phase network

A

1 × 35,2

1 × 52,2

-

three-phase network

3 × 11,6

3 × 17,4

3 × 23,1

3 × 34,8

Minimalny przekrój
przewodu zasilającego

single-phase network

A

3 × 10,0

3 × 10,0

-

three-phase network

5 × 2,5

5 × 4,0

5 × 4,0

5 × 10,0

Nominal power consumption

A

3 x 11,6

3 x 17,4

3 x 23,1

3 x 29,0

Maximum allowable impedance of supply network

Ω

-

0,27

0,27

0,13

Max. permissible work pressure

Mpa (bar)

0,15 (1,5)

Capacity of diaphragm vessel

l

6

6

6

6

STB setting

°C

90

Setting of boiler safety valve

Mpa (bar)

0,3 (3,0)

Boiler weight

kg

27

27

28

28

 

 

  1. Built-in expansion vessel
  2. Mounting plate
  3. Modular disconnector
  4. Thermal protection of STB boiler
  5. Copper connecting pipes
  6. SSR relays
  7. Circulating pump
  8. Heat exchanger made of high-grade stainless steel
  9. Automatic air-vent
  10. Safety valve
  11. Intuitive controller
  12. Pressure switch
  13. Housing protected with durable powder paint
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