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Wiring For 2-Zone Temperature Control - Mitsubishi Electric ecodan EHSC Series Installation Manual

Hydrobox

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5
System Set Up
Outputs
Name
Terminal block Connector Item
OUT1
TBO.1 1-2
CNP1
OUT2
TBO.1 3-4
OUT3
TBO.1 5-6
OUT14
CNP4
TBO.2 4-6
CNV1
OUT4
CN851
TBO.2 1-2
OUT5
TBO.2 2-3
OUT6
CNBH 1-3
OUT7
CNBH 5-7
OUT8
TBO.4 7-8
OUT9
TBO.4 5-6
CNIH
OUT11 TBO.3 5-6
OUT12 TBO.3 7-8
OUT13 TBO.4 3-4
OUT15 TBO.4 1-2
OUT10 TBO.3 1-2
OUT16 TBO.3 3-4
OUTA1 TBI.4 7-8
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.
N
L
N
L
N
L
TBO.2
TBO.1
1 2 3 4 5 6
OUT1 OUT2 OUT3
Wiring specification and local supply parts
Item
Name
External output function
Outputs wire
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).
6. Use the same thing as the Signal input wire for OUTA1 wiring.

5.3 Wiring for 2-zone temperature control

Connect the pipe work and locally supplied parts according to the relevant circuit
diagram shown "Local system"in Section 3, of this manual.
<Mixing valve>
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).
<Thermistor>
•Do not install the thermistors on the mixing tank.
•Install the Zone2 flow temp. thermistor (THW8) near the mixing valve.
•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.
Water circulation pump 1 output
(Space heating/cooling & DHW)
Water circulation pump 2 output
(Space heating/cooling for Zone1)
Water circulation pump 3 output
(Space heating/cooling for Zone2) *1
2-way valve 2b output *2
Water circulation pump 4 output (DHW)
3-way valve (2-way valve 1) output
3-way valve output
Mixing valve output *1
Booster heater 1 output
Booster heater 2 output
Cooling signal output
Immersion heater output
Error output
Defrost output
2-way valve 2a output *2
Comp ON signal
Boiler output
Heating/Cooling thermo ON signal
Analog output
N L L
N
1 2 3 4 5 6
TBO.3 1 2 3 4 5 6 7 8
OUT4
OUT10 OUT16OUT11 OUT12
Close Open
OUT5
Model and specifications
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
OFF
ON
Signal/Max. current
OFF
ON
230 V AC 1.0 A Max.
(Inrush current 40 A Max.)
OFF
ON
230 V AC 1.0 A Max.
(Inrush current 40 A Max.)
OFF
ON
230 V AC 1.0 A Max.
(Inrush current 40 A Max.)
OFF
ON
230 V AC 1.0 A Max.
(Inrush current 40 A Max.)
Heating
DHW
230 V AC 0.1 A Max.
Close
230 V AC 0.1 A Max.
Stop
Open
OFF
ON
230 V AC 0.5 A Max. (Relay)
OFF
ON
230 V AC 0.5 A Max. (Relay)
OFF
ON
230 V AC 0.5 A Max.
OFF
ON
230 V AC 0.5 A Max. (Relay)
Normal
Error
230 V AC 0.5 A Max.
Normal
Defrost
230 V AC 0.5 A Max.
OFF
ON
230 V AC 0.1 A Max.
OFF
ON
230 V AC 0.5 A Max.
non-voltage contact
OFF
ON
· 220-240 V AC (30 V DC)
OFF
ON
· 10 mA 5 V DC or more
0 V-10 V
0-10 V DC 5 mA max.
N L N L
N
L
N
L
N
TBO.4
1 2 3 4
5
OUT15
OUT13
OUT9
How to use TBO.1 to 4
Tool
Conductor
Outline view
Connect them using either way as shown above.
<Figure 5.2.2>
to Zone2
from mixing tank
heat emitter
A
Motorized mixing
valve
B
to mixing tank
from Zone2
heat emitter
Max. total current
4.0 A (a)
3.0 A (b)
0.5 A or less
L
N L
TBI.4 8 7
6
7 8
OUTA1
OUT8
Tool
Conductor
Top view
N
L
FTC
1
2
3
TBO.2
Close N Open
en
20

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