Fujitsu Super High Power Series Design & Technical Manual page 114

Terminal
X10
X11
X12
X13
X14
X15
nd
*: If the 2 circuit kit are installed in the system, this circulation pump is assigned for higher temper-
ature circuit.
4-3. Connections to the heat pump regulator (Accessories and Options)
Main voltage
L
Earth Power supply
N
EX1 Power shedding
EX2 Peak time/off-peak times
EX3 External fault
QX1
Circulation pump*
N
QX2
Backup HTR 1 or Distribution valve for boiler
QX2
(Single phase model)
(inverted)
N
FX3
Backup HTR 2 or Boiler control (On/Off)
(Single phase model)
QX3
QX4
QX4
Distribution valve for DHW
(inverted)
N
QX5
Backup HTR for DHW
N
Use
- (03-70) -
4. Electrical connections