ROC Optima B18F2 18 kW dual circuit

Weight: 33 kg
Equipment: Display
Description: Type of heating boiler: gas, max. thermal power: 18 kW, number of circuits: double-circuit, placement: wall-mounted, fuel: natural gas, liquefied gas, type of combustion chamber: closed, type of power supply: single-phase, at
Peculiarities: Air vent, built-in expansion tank, built-in circulation pump, pressure gauge, safety valve, connector for external control, thermometer
Control: Electronic
Dimensions WxHxD: 460x760x230mm
Installation: Wall-mounted
Efficiency: 90 %
Fuel: Natural gas, liquefied gas
Mains voltage: Single-phase
Thermal power: 6 - 18 kW
The combustion chamber: Closed
Max. water pressure in the DHW circuit: 8 bar
Max. water pressure in the heating circuit: 3 bar
Temperature in the DHW circuit: 30 - 60 °С
Heat carrier temperature: 30 - 85 °С
Thermal load: 6.70 - 20 kW
Expansion tank volume: 6 l
Burner: Gas
Coaxial chimney diameter: 60/100 mm
Gas connection: 3/4"
Branch pipe for connecting the DHW circuit: 1/2"
Heating circuit connection: 3/4"
Connection of a separate chimney diameter 80 mm: Yes
Nominal pressure of natural gas: 13 - 25 mbar
Natural gas consumption: 2.12 cu. m/hour
Number of circuits: Double-circuit
Primary heat exchanger material: Copper
Type of heating boiler: Gas, convection
Hot water capacity at t 25°C: 10.1 l/min