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User manual 5.14 - OR4 basic / OR4 pro (C6584.005.038-09)
Installation
Smoke detector OR4 basic/OR4 pro
Issue 2021-12
Subject to error/change
2.2
Function
1
3
2
4
Part of the air which flows in the ventilation duct
[1]
is
diverted into the flow chamber
[2]
. The separation plane
[3]
and the protective screen
[4]
protect the electronics
from soiling in the process. The electronics monitor
the air flow for soiling and particles. Messages can be
transmitted to a fire detection system or the building
management system so that, in case of smoke detection,
the necessary control scenarios can be triggered in good
time in order to prevent smoke from transferring to other
fire compartments.
The analysis and control unit can be removed and
sprayed with a test aerosol for a functional test.
3
Installation
3.1
Installation details
The OR4 can be installed with any alignment in ventilation ducts regardless of the direction of air flow (horizontally,
vertically or at an angle). The continual through-flow and thus effective smoke detection must be guaranteed in the
process. The corner area on rectangular ventilation ducts must not be used for installation.
INFO
ERR
OR
RUN
OK
INF
O
ER
R
O
R
R
U
N
OK
INFO
ERROR
RUN
OK
INF
O
ER
R
O
R
R
UN
OK
1/3
2/3
1/3
Corner area
2/3
In small and medium-sized duct cross sections, installation at the top, side or bottom is possible. In large, horizontal
cross sections, installation in the upper third of the ventilation duct is recommendable in the interest of early smoke
detection. Installation must be performed at a sufficient distance from connection points, such as plug connections or
flanges.
The gap upstream and downstream of disruption points (of all kinds) must be at least 1.5 x d
h
(hydraulic diameter).
min.1.5 xd
h
min. 1.5 xd
h
OR4
OR4
Disruption point
