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17.10.2008 Service instructions Lmu34 sw 2.09 

 

 

 

 
 
 

 

 
 
 
 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

Condensing gas boilers 

 

 

NOVADENS … 

 

 

 
 

 

U

SING 

THE 

S

IEMENS 

TEMPERATURE 

REGULATOR 

QAA73

 

TO 

PROGRAM 

BOILERS PARAMETERS

 

GB 

Summary of Contents for QAA73

Page 1: ...Pag 1 5 17 10 2008 Service instructions Lmu34 sw 2 09 Condensing gas boilers NOVADENS USING THE SIEMENS TEMPERATURE REGULATOR QAA73 TO PROGRAM BOILERS PARAMETERS GB ...

Page 2: ...t 3 seconds The Initialising BMU parameters appears on the display line 725 2 Simultaneously press keys 1 2 on QAA73 temperature regulator for about 3 seconds The Initialising BMU SERVICE line 504 TkSmax 3 Press keys 1 2 to scroll through the list of parameters 4 To change the value of the selected parameter press key 3 4 to decrease or increase the value respectively 5 Press key 5 to enter the ne...

Page 3: ...m burner pause time s heat demand dependent switching hysteresis 180 555 0 Chimney sweep function ON active OFF deactivate OFF 555 1 Legionella function ON active OFF deactivate ON 555 2 Setting ON hydraulic differential pressure switch OFF pressure switch OFF 555 3 555 7 NOT used 608 Setting value of modulation air at ignition load PWM 55 50 55 609 Setting value of modulation PWM air at low fire ...

Page 4: ... value post purge time s 10 677 Preset output BMU controller stop function max 100 min 0 0 678 MANUFACTURE information 205 202 205 651 Hydraulic system adjustment 1 2 652 MANUFACTURE information 1240 2242 2280 ONLY READING PARAMETERS 700 1st previous fault code counter 702 1st internal previous fault code 703 2nd previous fault code counter 705 2nd internal previous fault code 706 3rd previous fau...

Page 5: ...code counter 714 5th internal previous fault code 715 Actual fault code counter The counter shows the number of times of same error happened 728 HMI code of 1st previous error counter 729 HMI code of 2nd previous error counter 730 HMI code of 3rd previous error counter 731 HMI code of 4th previous error counter 732 HMI code of 5th previous error counter 733 HMI code of actual error counter ...

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