Mounting
ASD 535, Mounting and installation, T 140 333 d en
15 / 40
2.4.2
Mounting positions of the detector housing
In principle the detector housing can be mounted in the X, Y or Z axis. Because of the indicator elements labelling, however,
mounting in the Y axis is advisable (vertical, control unit up). The sampling pipes are then inserted into the detector housing
from below. This makes it easier to conduct pipes to accessory parts such as filter box / filter unit and water separators, which,
for physical reasons, should always be below the ASD detector housing. If introducing the sampling pipes into the detector
housing from above is unavoidable, the detector housing can be turned 180° and mounted (control unit down). So that the con-
trol unit labelling is not upside down, the labelling strips of the control unit can be turned accordingly (see Sec.
The allocation of the tube networks to the smoke sensors is permanently preset and is recognisable by the identification (ribs)
on the tube inputs (
I
and
II
). To prevent dirt from entering, the detector housing is delivered with fitted pipe plugs (tube network
I and II entries). Similarly, all cable screw unions are closed. The pipe plug is removed on entry I for ASD 535-1 and -3 and on
entry II for ASD 535-2 and -4. For ASD 535-1 and -3 with only one tube network, the pipe plug on entry II is not removed. If
there is a return sampling pipe in the monitored area, it can be directly connected to the detector housing in place of the air
outlet pipe plugs.
Fig. 3 Mounting position and pipe entries on the detector housing
Notices about pipe entries
•
The entry openings in the detector housing are designed so that the sampling pipe only has to be inserted
(conical opening). Using an adhesive agent on the sampling pipe should be done only in special cases and af-
ter consulting with the manufacturer.
•
On the ASD 535-1 and -3 the pipe plug must remain on entry II.
•
The air outlet pipe plug (with openings) may be fitted only in the air outlet opening.
•
The pipe plugs must not be glued in the ASD housing (connector).
remove
Pi
pe
n
et
w
or
k
II
Incoming
sampling pipes
from below
Pi
pe
n
et
w
or
k
I
remove
P
ip
e
ne
tw
or
k
II
Return line
of sampling pipe
P
ip
e
ne
tw
or
k
I
Tube entry
from above
remove
Pi
pe
n
et
w
or
k
II
P
ip
e
ne
tw
or
k
I
Turn labelling
strips
remove
Pi
pe
n
et
w
or
k
II
Incoming
sampling pipes
from above
P
ip
e
ne
tw
or
k
I
Summary of Contents for ASD 535
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