Siemens OOHC740 - Specification

Planning
Technical CO alarm
4
66 | 108
Building Technologies
A6V10305793_m_en_
--
Fire Safety
2016-02-15
4.3.1.3 Specification
The table below shows the characteristics and fields of application of the
parameter sets for CO of the point detector.
No. Name Response thresholds of warning levels 1 to 3 'Technical CO Alarm'
[ppm CO]
Alarming
according to
standard
1 2 3
Static
[ppm CO]
Concentration-dependent
response time [min]
0 'Robust EU1' 30 60 –
1
- –
1
'Balanced EU2'
30 50
– ≥ 120 @ 33 ±3 ppm CO
60…90 @ 55 ±5 ppm CO
10…40 @ 110 ±10 ppm CO
≤ 3 @ 330 ±30 ppm CO
EN 50291
4 'Static 40' 30 35 40 - –
5 'Static 50' 30 40 50 - –
6 'Static 60' 30 45 60 - –
7
'Balanced US1'
30 50
– 60…240 @ 70 ±5 ppm CO
10…50 @ 150 ±5 ppm CO
4…15 @ 400 ±10 ppm CO
UL 2034
1
Warning level 3 is not output in the default device parameter set.
Example for parameter set 1 'Balanced EU2' @ 55 ±5 ppm CO:
At 50 ppm CO, alarming must take place after between 60 and 90 minutes.
At an o
perating temperature of ≥80
°C, the CO sensor may not function reliably.
Irreversible signaling of a critical fault therefore follows after four hours.
The point detector may only be used in continuous operation within the specified
temperatures!