GB.TBLZ49.091201
We reserve the right to alter specifications without notice.
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5. Installation and location
Position the smoke detector in the direction of flow, accord-
ing to the arrow on the cover. The smoke detector is loca-
tion-independent and can be installed on any side of the
duct.
In the event of large temperature differences, e.g. outside
or in cold attics, the detector must be insulated from the
surrounding air (due to the risk of condensation build-up in
the detector housing).
To ensure optimum combustion gas detection the smoke
detector must be positioned so that the distance
to
the
nearest interfering source in the duct (see example of inter-
fering sources below), in the direction of airflow, is the
same as 3 x the duct’s hydraulic diameter. Nearest location
after
an interfering source must be at least 5 x the duct’s
hydraulic diameter.
MIN 3xdh
MIN 5xdh
GX
GX
MIN 3xdh
MIN 5xdh
GX
GX
MIN 3xdh
MIN 5xdh
GX
GX
MIN 3xdh
MIN 5xdh
GX
GX
MIN 3xdh
MIN 5xdh
GX
GX
MIN 5xdh
GX
M
IN 3xd
h
GX
MIN 5xdh
GX
M
IN 3xd
h
GX
GX
MIN 3xdh
GX
GX
MIN 3xdh
MIN 5xdh
d = D
Ø D
h
d =
h
2xHxB
H+B
H
B
Hydraulic diameter
CIRCULAR DUCT
RECTANGULAR DUCT
MIN 3xdh
MIN 5xdh
GX
GX
MIN 3xdh
MIN 5xdh
GX
GX
MIN 3xdh
MIN 5xdh
GX
GX
MIN 3xdh
MIN 5xdh
GX
GX
MIN 3xdh
MIN 5xdh
GX
GX
MIN 5xdh
GX
M
IN 3xd
h
GX
MIN 5xdh
GX
M
IN 3xd
h
GX
GX
MIN 3xdh
GX
GX
MIN 3xdh
MIN 5xdh
d = D
Ø D
h
d =
h
2xHxB
H+B
H
B
Examples of sources of disturbance
FAN
DAMPER
SILENCER
COIL
BEND
BRANCH
ADAPTER
EXTRACT AIR
SUPPLY AIR
AIR HANDLING UNIT
