11/25 
Building Technologies    CC1N7101en 
HVAC Products    27.11.2008 
Technical data (cont´d) 
 
Mains voltage  AC 230 V +10% / -15% 
Mains frequency 
50...60Hz ±6% 
Perm. cable length from QRA... to 
AGQ3…A27 (lay separate cable) 
Max. 20m 
Perm. cable length from AGQ3...A27 to 
LME...A2 
Max. 2m 
Weight of AGQ3...A27  Approx. 140g 
Perm. mounting position  Optional 
Degree of protection  IP40, to be ensured through mounting 
Power consumption  4.5VA 
 
At mains voltage U
N  
AC 220 V  AC 240 V 
Detector voltage at QRA... (with no load) 
Terminal 3 off (refer to control sequence)  DC 400 V  DC 400 V 
Terminal 3 on (refer to control sequence)  DC 300 V  DC 300 V 
Detector voltage 
Load by DC measuring instrument Ri > 10MΩ 
Terminal 3 off (refer to control sequence)  DC 380 V  DC 380 V 
Terminal 3 on (refer to control sequence)  DC 280 V  DC 280 V 
DC current detector signals with UV detector 
QRA... 
Min. required  Max. possible 
Measurement at the UV detector QRA…  200µA  500µA 
 
In connection with LME…A2 burner controls, use of UV ancillary unit AGQ3...A27 is 
mandatory. 
 
(A)  Correct functioning of aged UV cells can be checked as UV test with a higher 
supply voltage across the UV cell after controlled shutdown until terminal 3 on. 
 
Connection diagram  Measuring circuit for measuring the UV 
detector current 
 
12
2
3
1
7101a06/1107
GP/SB
R/W
L
L
N
QRA...
+
-
br
bl
rt
sw
AGQ3...A27
sw
bl
(A)
LME...A2
br
bl
rt
sw
AGQ3...A27
sw
bl
QRA
7101a07/1107
 
  Measurement made at the UV detector 
QRA… 
 
C  Electrolytic capacitor 100...470µF; DC 10...25 V  bl  Blue 
M Microammeter Ri max. 5,000Ω br Brown 
QRA... Flame detector  gr  Grey 
GP Gas pressure switch  rt  Red 
SB  Safety limit thermostat  sw  Black 
R  Control thermostat or pressurestat     
W  Limit thermostat or pressure switch     
Flame supervision 
with AGQ3…A27 and 
UV detector QRA...