Mounting / Installation
Detector lines
5
87 | 108
Building Technologies
A6V10305793_m_en_--
Fire Safety
2016-02-15
5.10.2 Connection diagram, collective
If the point detector OOH740 is used on a collective detector line, the parameter
set is selected by installing a resistor PSR720-1 or PSR720-2 in the detector base.
The resistors are available as accessories.
You can select parameter sets by installing or leaving out the following resistors:
Parameter set
Resistance value
Resistance
'Standard Plus'
-
-
'Suppression'
33 k
Ω
PSR720-1
'High Sensitive Fast'
68 k
Ω
PSR720-2
Proceed as follows to install the point detector OOH740 on a collective line:
1. Only install detector base DB721D or detector base (collective) DB110 on the
detector line.
2. If necessary: Install a resistor between terminals '1a' and '5'.
3. Install one point detector OOH740 on each detector base.
a
Mounting of the point detector is complete.
Use of the detector base DB721D makes it easier to subsequently migrate the fire
detection installation from a collective detector line to an addressed detector line.
The detector bases no longer need to be replaced.
Limitations when using the detector base DB721D
Only install the detector base DB721D when the following conditions are satisfied:
●
The control panel can detect that the point detector has been removed from the
detector base with a diode.
●
Downstream detectors on the stub are still operated correctly when the point
detector is removed.
Control panels FC10 with a 'British Standard Module' satisfy these conditions.
You will find detailed information in the 'List of compatibility'.
