Some info on this website http://www.firesafe.org.uk/fire-doors/

Ray, I've always understood that a fire door set is required to achieve appropriate protection, and the 'set' necessarily includes the door and its frame. These come certified, labelled, kitemarked etc. and I believe (standing by for correction) that Building Regs. require labels to be left on the top edge of the door. I don't believe the installer is required to re-certify or re-authenticate that which the supplier has already provided.

Ray, try approved document B section 5 I think. You can always check the ceritification by taking the number of the certificate on the door and cross referencing it.(but you know that). Also 9999. Do you use the FDIS website, look also at the British Woodworking Federation (BWF) they have a lot of information on doors and certification. It is also recommended that you use 3rd party certified installers.

I can't help with the guidance but the supplier will provide the certificates upon request. Also if the installer is competence checked before employment and can prove his training to install fire door sets those two documents are all you need. Any joiner can install a fire door set but will he do it properly. A fire door is a chocolate fireguard if not correctly installed.

Problem with BS standards for this subject is vast, i.e. Function of handles for ironmongery Levers and knobs BS EN 1906 Pull handles BS EN 8424 but we don't use them here yet. Self closers BS EN 1154 Ball bearing hinges must have maintenance details according to BS EN 1935 Fire resistance test BS EN 1634-i:2000- 1 Intemescent seals BS EN ISO 900:2008 Locks and latches fixing height BS EN8300 If your door has smoke seals then the threshold gap also has to be 3mm and not 10mm as quoted. And so on and so forth! That is why it is best to invest in the door set as they are tested together and you can have the furniture fitted, have a 3rd party certified installer. Because remember if the self closer for example is not fitted according to the template then any guarantee is null and void, if you put letter box in it then you need to look at the intumesent used and have a box on the back that is fire and smoke resistant can't recall the BS number for that. It's becoming a mine field and I think it is going to get worse.