Mvhr valves

[Jason L]

So do the ceiling Mvhr valves where you have a timber floor and accommodation above need to be a fire rated type, it crossed my mine the other day that they should be, but when I was on the phone to BPC and asked, he said they don’t ? 
ta

[JFDIY]

Would that be driven by the ceiling requirements of where the valve is to be fitter?, i.e. if your building regs quote 'XXmins of fire resistance' or similar then the valves must maintain that same requirement as the ceiling

[Jason L]

  On 02/02/2021 at 23:13, JFDIY said:

Would that be driven by the ceiling requirements of where the valve is to be fitter?, i.e. if your building regs quote 'XXmins of fire resistance' or similar then the valves must maintain that same requirement as the ceiling

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so for example the ground floor ceilings need to provide half hr resistance to the first floor, they need to be fire rated type