Fire Protection | Data sheet No. 41350 | Version 01-2019 |
5
|
10
KRM-X® Duct Smoke Detector
Valid for soft-
ware 0020
and higher
In the event of a smoke alarm
In the event of device failure / missing detector
KRM-X-1 / KRM-X-1-MOD /
KRM-X-1-BAC /
KRM-X-2 / KRM-X-2-MOD /
KRM-X-2-BAC
KRM-X-1 / KRM-X-1-MOD /
KRM-X-1-BAC /
KRM-X-2 / KRM-X-2-MOD /
KRM-X-2-BAC
Alarm
relay
11 / 12 / 13
Drops out
Drops out
Alarm
relay 14 / 15
Drops out
Drops out
LED
alarm / Reset
Lights up
Lights up
Fault
relay
18 / 19
---------
Not present
---------
Not present
Fault
relay
Stays off
Lights up
Alarm reset or
failure reset
Disconnect power or press alarm button or reset via terminal
9/10, provided detector chamber has been cleared.
Disconnect power or press alarm button or reset via terminal
9/10, provided detector chamber has been cleared and fault
rectified.
Behavior of the Alarm Relay and Fault Relay and Displays, Plus Reset Options
Installation Instructions and Positioning
The KRM-X must be positioned in accordance with the applicable
local regulations on ventilation systems. Reliable smoke detection
must be ensured. The air collecting tube may be cut to a length of
160 mm, depending on the cross-section of the ventilation duct.
It must not be cut to less than this minimum length of 160 mm.
Using the KS-X mounting bracket, this makes it possible to mon-
itor ducts up to <100 mm ø. There is no maximum width, height
or diameter for air ventilation ducts monitored with the 600 mm
long standard air collecting tube under the VdS approval/
DIBt certification. The indicated airflow direction must be
observed when installing the tube adapter. The air collecting
tube may be mounted laterally, below or above the air duct – the
location makes no difference.
In the ideal case, as far as is structurally possible, install the KRM-X
in a location where flow meters etc. are normally installed, so that
there is a laminar airflow along the measuring tube. We recom-
mend mounting and installing the KRM-X at the same distance
from heating, cooling and humidity devices and in a similar way
as flow sensors. The distance of the KRM-X to fittings, valves,
filters, etc. should be 3 times the diagonal of the channel
cross-section against the flow direction and 5 times with the flow
direction, if this is structurally possible. The KRM-X, including the
Example of positioning
after a change of air duct
direction (recommendation)
Example of positioning
after an air outlet (recommendation)
air outlet
Where there are large temperature differences,
outdoors for example, or in places that are
dependent on outside temperature (roof, attic),
the air duct smoke detector needs to be insulated.
Oppermann Regelgeräte provides a special
splash-proof housing (WDG-X) for this purpose.
5 d
h
3 d
h
5 d
h
