Baxi Duo-tec - http://www.baxi.co.uk/docs/Baxi_Duo-tec_Combi_HE_User_Instructions.pdf
Baxi Solo HE - http://www.baxi.co.uk/docs/Baxi_Solo_HE_User_Instructions.pdf
Glow Worm Compact - http://www.glow-worm.co.uk/stepone/data/downloads_sd/4f/00/00/compact80e.pdf <http://www.glow-worm.co.uk/stepone/data/downloads_sd/4f/00/00/compact80e.pdf>
Glow Worm CXI - http://www.glow-worm.co.uk/stepone/data/downloads_sd/51/00/00/cxi-range.pdf <http://www.baxi.co.uk/docs/Baxi_Duo-tec_Combi_HE_User_Instructions.pdf>
Glow Worm HXI - http://www.glow-worm.co.uk/stepone/data/downloads_sd/6c/00/00/hxi_range.pdf
Ideal Icos - http://www.idealheating.com/downloads/manuals/155696-3.pdf <http://www.idealheating.com/downloads/manuals/155696-3.pdf>
Ideal Isar - http://www.bvt.org.uk/shropshire/pdf/usermanuals/IdealIsarHE.pdf
Potterton 24 ECO - http://www.bhl.co.uk/uploads/article1469/Potterton%20Performa%2024%20HE%20ECO%20Combi%20User%20Guide.pdf <http://www.bhl.co.uk/uploads/article1469/Potterton%20Performa%2024%20HE%20ECO%20Combi%20User%20Guide.pdf>
Potterton Performer - http://www.potterton.co.uk/docs/Potterton_Performa_24_Eco_HE_User_Guide.pdf <http://www.worcester-bosch.co.uk/cache/file/38/user-manual-for-i-junior--manufactured-march-2005-to-july-2008.pdf>
Potterton Promax - http://www.potterton.co.uk/docs/Potterton_Promax_Heat_Only_HE_User_Guide.pdf
Vokera Mynute - http://vokera.co.uk/wp-content/uploads/2009/04/mynute_vhe_information_sheet_trade.pdf <http://vokera.co.uk/wp-content/uploads/2009/04/mynute_vhe_information_sheet_trade.pdf>
Vokera Unica - http://vokera.excaliburstudio.co.uk/wp-content/uploads/2009/04/unica-he-user-manual.pdf
Worcester Greenstar i Junior - http://www.worcester-bosch.co.uk/cache/file/38/user-manual-for-i-junior--manufactured-march-2005-to-july-2008.pdf <http://www.worcester-bosch.co.uk/cache/file/38/user-manual-for-i-junior--manufactured-march-2005-to-july-2008.pdf>
Worcester Greenstar Si - http://www.worcester-bosch.co.uk/cache/file/36/user-manual-for-si--manufactured-march-2005-to-july-2008.pdf