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The Honeywell SF450EN Carbon Monoxide Detector is a highly reliable and accurate CO Detector for domestic use within the home, caravan or boat. The SF450EN uses the latest in electro-chemical sensor technology to ensure reliablity and is guaranteed to provide 6 years of life, under normal working conditions. Also the SF450EN Carbon Monoxide Detector is officially aprroved and kite marked to the stringent preformance requirements of the European Standard EN50291:2001.
The Baxi Neta-tec Condensing Gas Combi Boiler range is the latest Combi Boiler range from Baxi and is ideal for small properties with one bathroom and a low demand for hot water. The Neta-tec Gas Combi Boiler features cupboard size dimensions and allows the user to fit the boiler within a kitchen wall cupboard providing flexibility and discreet installation. Also the Neta-tec Gas Combi Boiler features the innovative THINK combustion management system which includes gas adaptive controls that alter the boilers fuel consumption to maintain the boilers output while ensuring optimum efficiency. The Neta-tec Gas Combi Boiler also has a wide modulation range of 1:5 for few ignitions resulting in lower gas bills and reduced carbon emissions. For quick and easy installation and set-up the Neta-tec Gas Combi Boiler range also has user friendly controls for flexibility and comfort.
Key Features and Benefits:
At Boilers2go we recommend the Baxi Neta-tec 33 Condensing Gas Combi Boiler for small-medium size properties with a low hot water and heating demand. Also as the Neta-tec 33 Gas Combi Boiler is a condensing boiler and features the THINK combustion management system it has an impressive energy efficiency of over 90% giving it a SEDBUK 'A' rating. Consumers opting for the Neta-tec 33 Gas Combi Boiler will be investing in a high reliable and efficient boiler making this a wise investment.
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.
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