How about helping rather than busting his chops. For all you know mate. He has been on an estate of 500 boilers where they cannot be adjusted. #justsayingYour tone suggests that you have taken offence!
I can’t actually recall what is in the ACS to get a boiler ticket, but I do know that you use to have to do a FGA course, but is now part of the Boiler module. I still do not understand how you can be registered for boilers, especially as a new guy, without having learnt about FGA’ing - holding the ticket says you are competent.
Has the industry gone mad?