23 of 49
Commissioning
Parameter adjustment on
control unit QAA73
Prerequisites for control unit QAA73
function
The EURON must be put into
"winter" mode via
the ‘Mode’
function key (see Page 21)
Legend
1
Program key „Down‟
2
Program key „Up‟
3
Minus Key Adjustment
4
Plus Key Adjustment
5
Service water standby Key
6
LCD Display
7
Heating circuit standby key
8
Parameter Code appears here
9
Rated temperature adjusting knob
10 Parameter value
11 Info Key
12 On/Off key
Application level
Key operation
Parameter range
QAA73 - User
Press program key 2
– Scroll through Parameters
End User / Operator Parameter 1
– 50
(see Page 40)
QAA73 - Engineer
Press and Hold program keys 1 and 2 for approx 5
secs.
Specialist Parameter 51
– 98
(see page 41)
Back via "INFO" key
LMU
Key operation in this order:
Press and Hold Keys 4 and 1 for approx 5 secs.
Then for the next level (whilst in Parameters 516
– 727)
Keep program keys 1 and 2 pressed simultaneously for
approx a further 5 secs.
Engineer LMU Parameter 516
– 727
(See Page 42)
Specialist Engineer Parameter 501
– 755
(See Page 43 & 44)
In the corresponding parameter range
Parameters are selected using keys 1 and 2
Values are changed using keys 3 and 4
Press "INFO" key
to return to normal operational / display mode
