Gas Hi-Therm Optimus 28 double-circuit

Weight: 31 kg
Equipment: Built-in exhaust fan, display
Description: Type of heating boiler: gas, max. thermal power: 27.80 kW, number of circuits: double-circuit, placement: wall-mounted, fuel: natural gas, liquefied gas, combustion chamber type: closed, type of power supply: single-phase,
Peculiarities: Air vent, built-in expansion tank, built-in circulation pump, pressure gauge, safety valve
Control: Electronic
Dimensions WxHxD: 403x730x345mm
Installation: Wall-mounted
Efficiency: 90.4 %
Fuel: Natural gas, liquefied gas
Mains voltage: Single-phase
Thermal power: 10.30 - 27.80 kW
LPG consumption: 2.15 kg/hour
Secondary heat exchanger material: Stainless steel
The combustion chamber: Closed
Max. water pressure in the DHW circuit: 10 bar
Max. water pressure in the heating circuit: 3 bar
Temperature in the DHW circuit: 35 - 55 °С
Heat carrier temperature: 35 - 85 °С
Expansion tank volume: 7 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"
Permissible LPG pressure: 37 mbar
Nominal pressure of natural gas: 20 mbar
Natural gas consumption: 3.1 cu. m/hour
Number of circuits: Double-circuit
Primary heat exchanger material: Copper
Type of heating boiler: Gas, convection
Hot water capacity at t 30°C: 12.3 l/min