Siemens FDB22 Series Assembly page 5

Base attachment
Base attachment humid with seal
Base adaptor
Building Technologies
CPS Fire Safety
FDB291

for the supply of surface-mounted lines > 6 mm
–
detector base fixed with spring-loaded catch
–
120
Ø
FDB293

for higher protection category
–
for mounting in humid or wet environments
–
detector base FDB2x1/-AA fixed with spring-loaded catch
–
when the detector heating unit is used
–
Ø 135
FDB281

adaptor for MS8 detector base (existing, addressable MS8 fire detection systems)
–
Base height 25 mm
Height with inserted detector 60 mm
Opening for cable entry
Mounting slots min. 46 mm, max. 90 mm
Mounting holes 153.5 mm
Base height 49 mm
Height with inserted detector 87 mm
Detector base MS8
Base height 37 mm
Height with inserted detector 73 mm
Adaptor incl. addressable detector base,
Connecting terminals 'orange'
5