21
P2 230 V parametrisable output:
DHW circulation pump or heating circuit pump for
heating circuit without mixer (in systems with low
loss header)
A
BCU burner control unit power supply (connected
in the delivered condition)
B
Power supply for accessories
C
Plug located externally on the right or left-hand
side of the appliance (see also following diagram)
Connections to extra low voltage (ELV) plugs
!
Outside temperature sensor
Terminals 1 and 2 on external plug
C
%
Cylinder temperature sensor (connected in the
delivered condition)
jF
PlusBus
Terminals 5 and 6 on external plug
C
lA
CAN bus
Note on connecting accessories
When connecting accessories observe the sep-
arate installation instructions provided with
them.
On-site connections to the HMU heat management unit
6 5 4 3 2 1
6 5 4 3 2 1
C
Fig. 12
C
Plug located externally on the right or left-hand
side of the appliance (supplied separately)
Required plugs are supplied in separate packaging.
Provide strain relief for cables in the wiring chamber of
the HMU heat management unit using cable ties.
Outside temperature sensor
!
Fitting location for outside temperature sensor
■
North or north-westerly wall, 2 to 2.5 m above
ground level; in multi storey buildings, in the upper
half of the second floor
■
Not above windows, doors or vents
■
Not immediately below balconies or gutters
■
Never render over
Outside temperature sensor connection
2-core lead, length up to 35 m with a cross-section
of 1.5 mm
2
Connecting the low loss header sensor
)
The sensor of the low loss header is connected to the
accessory extension EM-P1 or EM-M1/MX (ADIO elec-
tronics module) respectively.
See installation instructions for extension EM-P1
or EM-M1/MX
Installation sequence
Electrical connections
(cont.)
6151778
Installation
