6.7.7
Electrically connecting the outdoor unit
A Power supply
B Communication bus
1. Remove the service panel.
2. Check the cross-section of the cable used, as well as its protection in
the distribution board.
3. Connect the earth wire.
Danger
The earth wire must be 10 mm longer than the N and L wires.
4. Connect the cables to the appropriate terminals.
5. Feed the cable into the cable duct and adjust the length of the cable
accordingly. Lock it in position with a cable clamp or a traction arrester
device.
Caution
Danger of electric shock: the length of the conductors between the
traction arrester device and the terminal blocks must be such that
the active conductors are put under tension before the earth
conductor.
6.7.8
Connecting the outdoor unit bus
1. Connect the outdoor unit bus to the X23 connector in the indoor
module's EHC–05 central unit PCB.
2. Set the SW8–3 switch on the outdoor unit PCB to ON.
6.7.9
Fitting the outdoor sensor
1. Choose a recommended location for the outdoor sensor.
Fig.40
MW
-1
0
0
1
2
1
6
-1
L1 L2 L3
N
S1 S2 S3
A
B
5
1
4
Fig.41
MW
-1
0
0
1
2
2
0
-1
X23
S1
S2 S3
MW
-1
0
0
1
2
2
0
-1
1
S3
S3
S2
S2
3
1 2
SW8
2
6 Installation
40
iHPI
7701563 - v02 - 22052018
