LOA24.171B17 View Datasheet(PDF) - Siemens AG
Part Name
Description
Manufacturer
LOA24.171B17 Datasheet PDF : 10 Pages
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Flame detectors
QRB...
QRC1...
Measuring curcuit for
detector current
For measuring circuits and detector cable lengths, refer to Data Sheets 7714 (QRB...)
and 7716 (QRC...).
Type of burner control
LOA24.171B27 / LOA24.171B17
LOA24.571C27
LOA25.173C27 / LOA25.173C17
LOA26.171B27
LOA28.173A27
LOA24.173A27
LOA24.174A27
LOA36.171A27
Min. detector current
required (with flame)
QRB... (typically)
Max. perm. detector
current
(without flame)
Max. detector current
possible (with flame)
70 µA
5.5 µA
210 µA
45 µA
70 µA
5.5 µA
5.5 µA
45 µA
900 µA
Type of burner control
LOA24.171B27
LOA24.571C27
LOA26.171B27
LOA24.171B17
LOA25.173C27 ¹)
LOA25.173C17 ¹)
LOA28.173A27 ¹)
LOA24.173A27
LOA24.174A27
LOA36.171A27
Min. detector current
required (with flame)
QRC... (typically)
Max. perm. detector
current
(without flame)
Max. detector current
possible (with flame)
70 µA
5.5 µA
110 µA
70 µA
---
5.5 µA
---
90 µA
---
45 µA
70 µA
5.5 µA
5.5 µA
45 µA
110 µA
¹) These types of LOA... may not be used in connection with QRC...blue-flame detec-
tors
Data given in the above table only apply under the folllowing conditions:
- Mains voltage AC 230 V
- Ambient temperature 23 °C
QRB...
QRC...
11
12
LOA...
11
12
1
LOA... Legend
bl
sw +
7118v01/0102
bl
sw + br
7118v02/0102
µA DC DC microammeter
with an internal resistance of
µA DC
µA DC
Ri = max. 5 kW
bl
Blue
sw
Black
br
Brown
QRB...
QRC1...
Only with LOA36...
Indication of flame
strength
Detector current LED lit
- With QRB...
- With QRC...
min. 60 µA ±15 %
min. 40 µA ±15 %
6/10
Siemens Building Technologies
HVAC Products
CC1N7118en
09.10.2002
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