Stated values are maximum values (see electrical data for exact values).
Unit
Wiring size(mm
2
)
3kW-1PH
6kW-1PH
9kW-3PH
4.0
6.0
4.0
INDOOR UNIT
POWER SUPPLY
3-phase 9kW backup heater
INDOOR UNIT
POWER SUPPLY
1-phase 3kW backup heater
XT1
7.5 Connecting the main power supply
standard
XT1
customized
L N
L N
LPS
FU
S
E
L N
L N
LPS
FU
S
E
LPS
FUSE
N
L1 L2 L3
L1 L2 L3
N
XT1
Fig.
7-3
20
2
2
2
2
2
2
20
22
20
22
20
22
High voltage wire
Low voltage wire
INDOOR UNIT
POWER SUPPLY
1-phase
6
kW backup heater
customized