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The Potterton Sirius Commercial Gas Regular Boiler range are a technically sophisticated light weight commercial condensing gas boiler range suitable for a range of commercial requirements. The light weight and quiet running Sirius Commercial Gas Regular Boiler is easy to install and extremely energy efficient, upto 107% net, with ultra low NOx emissions. The high efficiency and low emissions are attained with the use of the latest stainless steel heat exchanger technology and sophisticated controls for optimum performance and efficiency. In addition the Sirius Commercial Gas Regular Boilers offer a full fault diagnostic system and in-built time controls as standard.
Key Features and Benefits:
In a closed hot water circuit water cannot be compressed so any expansion in volume, created by an increase in temperature, needs to be accommodated by the expansion vessel. When the water is cold the pre-charge pressure forces the membrane sack, within the vessel, to collapse until the pump is started when the sack starts to inflate. As the temperature in the hot water circuit increases, resulting in the expansion of the water within the circuit, the expanded water enters the sack creating additional volume and lowering the pressure in the hot water circuit. As the water temperature drops the pre-charge pressure force the water from the sack back into the hot water circuit.