Fujitsu WGYA050DG6 Design & Technical Manual page 191

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CONNECTION TERMINALS
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Heat pump regulator RVS213827
Low voltage
Terminal Use
GND (common with interface PCB)
M
DI7 HP error
DI6 Defrost
X75 Uref
Compressor modulation
UX3
HP operation ON/OFF
D3
DO2 HP operation mode(HEAT/COOL)
BX1 Flow sensor
X80 M Common
BX2 Return sensor
UX1
X82 (Not used)
M
BX3
DHW sensor
M
X84
BX4
Outdoor sensor
M
1
Room thermostat or
2
Remote control
3
X86
B1
M Room thermostat
B2
X30 (Not used)
X50 User interface
X60 RF module
LPB clip
X70
Regulation extension kit (UTW-KREXD)
X100
Remark: Colored items are for options.
(*1) If the 2nd circuit kit are installed in the system, this circulation pump is assigned for higher temperature circuit.
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Regulation extension kit (UTW-KREXD)
Low voltage
Terminal Use
1
2
Room thermostat or
3
X150 Remote control
B1
for lower temperature circuit
M
B2
H33
X152 External input (*2)
M
BX31 Flow sensor for lower
X153
temperature circuit
M
BX32
M
(Not used)
BX33
X154
M
BX34
Swimming pool temperature sensor
M
X100 Heat pump regulator
Remark: (*2) Input H33 can be applied to one of several functions.(See "Input H33 function"for detail.)
(*3) See "Regulation extension kit AVS 55" manual for detail.
Main voltage
Terminal Use
L
X10 Earth
N
EX1 Power shedding
Peak time / off-peak times
X11 EX2
EX3 External fault
QX1
X12
N
QX2
QX2
X13
(inverted)
N
FX3
X14
QX3
QX4
QX4
(inverted)
X15
N
QX5
N
Main voltage
Terminal
L
X10 Earth
N
QX31
QX32
X110 N
QX33
N
QX34
N
QX35
X112
QX35
(inverted)
N
- (CS01 - 75) - - (CS01 - 75) -
Power supply
Circulation pump(*1)
Back-up HTR 1
or Distribution valve for boiler
(Single phase model)
Back-up HTR 2
or Boiler control (ON/OFF)
(Single phase model)
Distribution valve for DHW
Back-up HTR for DHW
Use
Power supply
Mixing valve for 2nd circuit
or Pilot wire(*3)
Circulation pump for
lower temperature circuit
(Not used)
Distribution valve for swimming pool
Control system