64
9. Multiple outdoor units control
Signal inputs
Name Terminal block Connector Item OFF (Open) OFF (Short)
RC TBI.2 1-2 CN22 Communication cable between indoor units — —
IN2 TBI.1 11-12 — Flow switch input Refer to SW2-2 in <9.6 Dip Switch Functions>.
Wiringspecicationandlocalsupplyparts
Item Name Modelandspecications
Signal input function Signal input wire
Use sheathed vinyl coated cord or cable.
Max. 10 m
Wire type: CV, CVS or equivalent
Wire size: Stranded wire 0.5 mm² to 1.25 mm²
Solid wire: ø0.65 mm to ø1.2 mm
Switch Non-voltage “a” contact signals
Remote switch: minimum applicable load 12V DC, 1mA
Thermistor inputs
Name Terminal block Connector Item Optional part model
TH2 — CN21 Thermistor (Ref. liquid temp.) —
THW1 — CNW12 1-2 Thermistor (Flow water temp.) —
THW2 — CNW12 3-4 Thermistor (Return water temp.) —
Note:
Donotsplicethewiringtoextendorshortenit,orthiscouldaffectcorrectmonitoringofeachtemperature.
If the wiring is too long, bundle it with a strap to adjust the length.
Outputs
Name Terminal block Connector Item OFF ON Signal/Max.current
OUT1 TBO.1 1-2 CNP1 Water circulation pump 1 output OFF ON 230V AC 1.0 A Max.
OUT4 TBO.2 4-6 CNV1 3-way valve (2-way valve 1) output Heating DHW 230V AC 0.1 A Max.
OUT13 TBO.4 1-2 — 2-way valve 2 output DHW Heating 230V AC 0.1 A Max.
<Fig. 9.7.7>
1
3
CN3C
(BLU)
1
3
CNPWM
(WHT)
LED1
LED2
LED3
LED4
CN108
5
1
5
1
5
1
CNRF
(WHT)
CN105
(RED)
TBO.1
TBO.2
TBO.3
TBO.4
CNP1
(WHT)
CNP4
(RED)
CNV1
(WHT)
CN22
(BLU)
CNIT
(BLU)
CN01
(WHT)
F2 F1
6.3A 250V 10A 250V
SW1
SW2
SW3
SW4
SW5
1
8
1
8
1
1
5
1
3
1
3
8
1
1
2
3
4
5
6
1
2
3
4
5
6
1
2
3
4
5
6
7
8
1
2
3
4
5
6
8
1
6
1
2
4
6
CNBH
(WHT)
CNBC
(GRY)
1
1
3
1
2
1
2
1
2
CNBHT
(BLK)
1
3
7
1
3
CNIH
(ORN)
1
4
1
3
CNW5
(WHT)
CN21
(YLW)
CNW12
(RED)
CN20
(RED)
TBI.2
126 10
14
8
137 119
4
53
2
1
TBI.3
2 4 6 8 10 12 14
1
3
5
7 9
11
13
1
4
CN1A
(WHT)
2 4 6 8 10 12 14
1
3
5
7 9
11
13
TBI.1
LN
OUT13
1 2
3
4
5
6
TBO.1
1 2
3
4
5
6
TBO.2 TBO.3
1 2
3
4
5
6 7 8
1 2
3
4
6
5
TBO.4
LN
OUT1
N L
OUT4
FTC
Hydrobox
<Fig. 9.7.6>
When the wires are wired to adjacent terminals use ring terminals and insu-
late the wires.
Note:
1.Donotconnectmultiplewatercirculationpumpsdirectlytoeachoutput(OUT1).Insuch
a case, connect them via (a) relay(s).
2.DonotconnectwatercirculationpumpstobothTBO.11-2andCNP1atthesametime.
3.Strandedwireshouldbeprocessedwithinsulation-coveredbarterminal(DIN46228-4
standard compatible type).
Item Name Modelandspecications
External output function Outputs wire
Use sheathed vinyl coated cord or cable.
Max. 30 m
Wire type: CV, CVS or equivalent
Wire size: Stranded wire 0.25 mm² to 1.5 mm²
Solid wire: 0.25 mm² to 1.5 mm²
Wiringspecicationandlocalsupplyparts
<Fig. 9.7.8>
Connect them using either way as shown above.
HowtouseTBO.1to4
Tool
Tool
Conductor
Conductor
Outline view Top view