Technical data

22 en | Accessories
Automatic Fire Detectors LSN improved
version
F.01U.003.449 | 7.2 | 2010.05 Product Information Bosch Sicherheitssysteme GmbH
6.4 MK 400 Detector Console
6.5 MH 400 Detector Heating Element
The MH 400 Detector Heating Element is required if the detector is used in an environment
where water condensation can occur, such as in a warehouse that must frequently be opened
briefly for delivery vehicles.
The detector heating element is connected to the + V/0 V terminals in the detector base.
Operating voltage: 24 V DC
Resistance: 1 kΩ
Power consumption: 3 W.
The heating is supplied with power either by the fed-through supply voltage via the central
unit or by a separate power pack.
With supply via the central unit, the number of detector heating elements depends on the
cable diameter and line length used.
6.6 External Detector Alarm Displays/Remote Indicators
A remote indicator is required if the detector is not directly visible or has been mounted in
false ceilings or floors. The remote indicator should be installed in corridors or access
pathways to the corresponding building sections or rooms. The red alarm indication of the
FAA-420-RI Remote Indicator and MPA External Detector Alarm Display conforms to
DIN 14623.
6.6.1 Installation Note for FAA-420-RI Remote Indicator
The MK 400 Detector Console is used to install detectors
above door frames or similar in compliance with DIBt.
The console is supplied with a pre-mounted MS 400
Detector Base (the detector shown is not included in the
scope of delivery).
NOTICE!
The FAA-420-RI Remote Indicator must be installed such that the broad side of the red alarm
indication (see image, item B) follows the observer's line of sight.
WARNING!
If the maximum current consumption of the connected detector is larger than 20 mA, it can
result in malfunctions and damage to the remote indicator.
In order to prevent damage to the device, ensure that the maximum current consumption of
20 mA is not exceeded.
Point-type automatic Bosch detectors already have an internal resistor that limits current
consumption.