1. Gas-fired central heating boilers. Specific standard for hybrid units combining a gas-fired boiler and an electrical heat pump in a product Part 2-3, (26th September 2023) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (46 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
2. Technical specification for flame detector system of boiler. (26th January 2021) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (52 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗