OSO Optima EPCI- The ideal choice for heat pumps - space heating and hot water
The Optima’s unique construction (pat.) provides optimal working conditions for heat pumps with a diverter valve for prioritizing domestic hot water production, whilst at the same time providing a buffer vessel in the same unit. The buffer vessel functions as energy storage for space heating requirements, while the heat pump is producing domestic hot water.
The unique 2-in1 tank on tank construction provides maximum COP (Coefficient of Performance) for the heat pump of your choice up to 12 kW. The buffer vessel of 100 litres is located at the lower part of the unit, in its own temperature zone suitable for low temperature space heating such as under floor heating or fan convectors. The suitable space heating temperature in the buffer tank transfers heat upwards to the domestic hot water tank through the cylinder, thereby reducing return temperature to the heat pump and maximizing COP. Should the heat pump fail, there is full electric backup through the 9 kW immersion heaters.
Once there is domestic hot water use, the variable valve in the heat pump switches its flow into the 1.8 m² heating coil in the upper cylinder, providing
maximum heat transfer and domestic hot water production. The 3 kW immersion heater heats the water up to 65°C.