23
Danger
Incorrect core assignment can lead to serious
injury from electrical current and result in appli-
ance damage.
Never interchange cores "L 1" and "N".
L1: Brown
N: Blue
The permanent power supply (power cable with plug
fÖ
) must be connected in such a way that it can be
switched off via the mains isolator.
When the mains isolator is on, the system is live as far
as the contactor of the mains filter unit and the control
unit.
The burner fan connecting cable is isolated as soon as
the control unit is switched off.
Routing connecting cables/leads
lÖ
fA
§
fÖ
aG
aBH
aG
lÖ
fA
fÖ
fÖ
aG
fÖ
A
B
C
D
E
f-YBH
/
fA
lÖ
§
f-YBH
/
Fig. 20
§
Boiler water temperature sensor
(supplied with the control unit)
aG
Flue gas temperature sensor
fÖ
Power cable
f-\YBH
Control unit connecting cable
fA
Burner cable
lÖ
Burner modulation cable
Danger
Incorrectly executed electrical installations can
result in injuries from electrical current and dam-
age to the appliance.
Route LV leads < 42 V separately from cables
that are > 42 V/230 V/400 V.
Note on
A
Route along the top rail, using plug-in cable ties.
Note on
B
Route below the top rail as a bundle, using plug-in
cable ties.
Note on
C
Route to the sensor well above the thermal insulation.
Push the boiler water temperature sensor into the sen-
sor well as far as it will go.
Note on
D
Route below the top rail, using plug-in cable ties.
Burner electrical connection
(cont.)
5833527
