Bosch FAH-420, Operation Manual

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!
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 con-
sumption.
Installation
1.
Before assembly, remove the cap from the base plate: To unlock the snap-fit hooks (see
image, item C) with a flat object (e.g. screwdriver), press in and lift the cap carefully.
35 mm
84 mm
84 mm
b
A
D
B
C
a
2. Fit the FAA-420-RI directly to the ceiling or wall. To do this, secure the base plate to a
level, dry surface with two (item E) or four (item F) screws.
57 mm
_
F
+ +
_
E
57 mm
G
3. Punch out the pre-punched cable entries (item D) to insert cables for surface mounting.
For flush mounting, insert cables through the opening (item G) under the connection
board.
4. Connect the FAA-420-RI via two terminals.
+
_
FAA-420-RI
C b1/+V
Automatic Fire Detectors LSN
improved
Accessories | en 27
Bosch Sicherheitssysteme GmbH Operation Guide 12/2012 | 8.1 | F.01U.003.448