Hello, may I please have some advice on the obligations and frequency of fire alarm testing within the communal areas of a small block of flats. Block was built 1860s, completely renovated 2 years ago with a new mixed grade fire alarm system professionally designed and installed. The building is purely residential. There are fours stories, one flat per floor plus lower ground floor flat with separate entrance. System category is Grade A L3/M in the communal hall - manual call points on each floor in the communal hallway and in the lower ground floor flat hallway. The four other flats have Grade D LD3 system. There are regular 6 monthly service inspections done and logged by a professional company. What does the law / regulations say about frequency of testing of the fire alarms? I find the information on this extremely unclear in so far as what is applicable to commercial premises and purely residential ones. The Summary of the BS 5839-1:2017 which I read refers to weekly tests, but this piece of regulations specifies it's for "non-domestic premises".
I've been told weekly inspections are necessary, then monthly by a different person. To be honest, I have literally never heard of a block of flats where audible fire system checks are done weekly or even monthly. Could you please provide some definitive information and also distinguish what is actually a legal requirement, vs recommendation, vs (perhaps) acceptable practice?