141
Extension kit for heating circuit with mixer
Checking the setting of rotary selec-
tor S1
The rotary selector on the PCB of the
extension kit defines the assignment to
the relevant heating circuit.
Heating circuit
Rotary se-
lector S1 set-
ting
Heating circuit with mix-
er M2 (heating circuit
2)
2
2 3 4
5
6
10
9 8 7
Heating circuit with mix-
er M3 (heating circuit
3)
4
4
2 3
5
6
10
9 8 7
Checking the rotational direction of
the mixer motor
After being switched on, the boiler imple-
ments a self-test. During this, the mixer
is opened and closed again.
Note the rotational direction of the mixer
motor during its self-test.
Then set the mixer manually to "Open".
Note
The flow temperature sensor must now
capture a higher temperature. If the tem-
perature drops, either the motor is turn-
ing in the wrong direction or the mixer set
is incorrectly fitted.
Mixer installation instructions
Changing the rotational direction of the mixer motor (if required)
gS
BU
|
~
1.
Remove the upper casing cover of
the extension kit.
Danger
An electric shock can be life-
threatening.
Before opening the boiler, dis-
connect from the mains volt-
age, for example at the fuse or
the mains isolator.
2.
At plug
gS
, swap the cores at termi-
nals "
|
" and "
~
".
Troubleshooting
Repair
(cont.)
5623 520 GB
Service
