L
N
OUT8
L
N
OUT13
L
N
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
L
L
L
N
N
N
OUT1 OUT2 OUT3
N L N
L
OUT5
OUT4
L N L N L
OUT10 OUT11OUT12 OUT15
N
OUT9
Close Open
20
System Set Up
5
EN
Note:
1. When the hydrobox is powered via outdoor unit, the maximum grand total current of (a)+(b) is 3.0 A.
2. Do not connect multiple water circulation pumps directly to each output (OUT1, OUT2, and OUT3). In such a case, connect them via (a) relay(s).
3. Do not connect water circulation pumps to both TBO.1 1-2 and CNP1 at the same time.
4. Connect an appropriate surge absorber to OUT10 (TBO.3 1-2) depending on the load at site.
5. Stranded wire should be processed with insulation-covered bar terminal (DIN46228-4 standard compatible type).
Item
Name
Model and specifications
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
Wiring specification and local supply parts
Outputs
Name Terminal block Connector Item
OFF
ON
Signal/Max. current
Max. total current
OUT1
TBO.1 1-2
CNP1
Water circulation pump 1 output
(Space heating/cooling & DHW)
OFF
ON
230V AC 1.0A Max.
4.0A (a)
OUT2
TBO.1 3-4
—
Water circulation pump 2 output
(Space heating/cooling for Zone1)
OFF
ON
230V AC 1.0A Max.
OUT3
TBO.1 5-6
—
Water circulation pump 3 output
(Space heating/cooling for Zone2) *1
OFF
ON
230V AC 1.0A Max.
2-way valve 2b output *2
OUT14
—
CNP4
Water circulation pump 4 output (DHW) OFF
ON
230V AC 1.0A Max.
OUT4
TBO.2 4-6
CNV1
3-way valve (2-way valve 1) output
Heating
DHW
230V AC 0.1A Max.
3.0A (b)
OUT5
TBO.2 1-2
—
Mixing valve output *1
Stop
Close
230V AC 0.1A Max.
TBO.2 2-3
Open
OUT6
—
CNBH 1-3 Booster heater 1 output
OFF
ON
230V AC 0.5A Max. (Relay)
OUT7
—
CNBH 5-7 Booster heater 2 output
OFF
ON
230V AC 0.5A Max. (Relay)
OUT8
TBO.4 5-6
—
Cooling signal output
OFF
ON
230V AC 0.5A Max.
OUT9
TBO.4 3-4
CNIH
Immersion heater output
OFF
ON
230V AC 0.5A Max. (Relay)
OUT11 TBO.3 3-4
—
Error output
Normal
Error
230V AC 0.5A Max.
OUT12 TBO.3 5-6
—
Defrost output
Normal
Defrost
230V AC 0.5A Max.
OUT13 TBO.4 1-2
—
2-way valve 2a output *2
OFF
ON
230V AC 0.1A Max.
OUT15 TBO.3 7-8
—
Comp ON signal
OFF
ON
230V AC 0.5A Max.
OUT10 TBO.3 1-2
—
Boiler output
OFF
ON
non-voltage contact
· 220-240V AC (30V DC)
0.5A or less
· 10mA 5V DC or more
—
Do not connect to the terminals that are indicated as “—” in the “Terminal block” field.
*1 For 2-zone temperature control.
*2 For 2-zone valve ON/OFF control.
<Figure 5.2.2>
Tool
Tool
Conductor
Conductor
Outline view
Top view
How to use TBO.1 to 4
Connect them using either way as shown above.
5.3 Wiring for 2-zone temperature control
1. Water circulation pump 2 (Zone1 water circulation pump) / Water circulation pump 3 (Zone2 water circulation pump)
Electrically wire water circulation pumps 2 and 3 to the appropriate output terminals. (Refer to “Outputs” in 5.2.)
2. Flow switch 2 (Zone1 flow switch) / Flow switch 3 (Zone2 flow switch)
Connect flow switches 2 and 3 to the appropriate terminals. (Refer to “Signal inputs” in 5.2.)
Set DIP switches 3-2 and 3-3 according to the functions of individual flow switches 2 and 3.
(Refer to “DIP switch functions” in 5.1.)
3. Thermistor
Connect the thermistor to monitor the Zone1 flow temperature to the THW6 (TBI. 2-3 and 2-4) terminals.
Connect the thermistor to monitor the Zone1 return temperature to the THW7 (TBI. 2-5 and 2-6) terminals.
Connect the thermistor to monitor the Zone2 flow temperature to the THW8 (TBI. 2-7 and 2-8) terminals.
Connect the thermistor to monitor the Zone2 return temperature to the THW9 (TBI. 2-9 and 2-10) terminals.
The maximum length of the thermistor wiring is 30 m. The length of the optional thermistors are 5 m. If you need to
splice and extend the wirings, following points must be carried out.
1) Connect the wirings by soldering.
2) Insulate each connecting point against dust and water.
4. Motorized mixing valve
Connect three wires coming from the motorized mixing valve to the appropriate terminals referring to “Outputs” in 5.2.
Note: Connect the signal line to open Port A (hot water inlet port) to TBO. 2-3 (Open), the signal line to open
Port B (cold water inlet port) to TBO. 2-1 (Close) , and the neutral terminal wire to TBO. 2-2 (N).
N L
FTC
TBO.2
1 2 3
Close N Open
A
B
from mixing tank
to mixing tank
to Zone2
heat emitter
from Zone2
heat emitter
Motorized mixing
valve
