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

5
System Set Up
Thermistor inputs
Name Terminal block Connector
TH1 — CN20
TH2 — CN21
THW1 — CNW12 1-2 Thermistor (Flow water temp.)
THW2 — CNW12 3-4 Thermistor (Return water temp.)
THW5B — CNW5 3-4
THW6 TBI.5 7-8 —
THW7 TBI.5 5-6 —
THW8 TBI.5 3-4 —
THW9 TBI.5 1-2 —
THWB1 TBI.6 7-8 —
THW10 TBI.6 5-6 —
Ensure to wire thermistor wirings away from the power line and/or OUT1 to 16 wirings.
*1. The maximum length of the thermistor wiring is 30 m. When the wires are wired to adjacent terminals, use ring terminals and insulate the wires.
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.
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.
Item
Thermistor (Room temp.) (Option)
Thermistor (Ref. liquid temp.)
Thermistor (DHW tank water temp.) (Option) *1
Thermistor (Zone1 flow water temp.) (Option) *1
Thermistor (Zone1 return water temp.) (Option) *1
Thermistor (Zone2 flow water temp.) (Option) *1
Thermistor (Zone2 return water temp.) (Option) *1
Thermistor (Boiler flow water temp.) (Option) *1
Thermistor (Mixing tank water temp.)(Option1) *1
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) OFF
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
Optional part model
PAC-SE41TS-E
PAC-TH011-E
PAC-TH011-E
PAC-TH012HT-E
OFF ON
OFF ON
OFF ON
OFF ON
ON
Heating DHW
Close
Stop
Open
OFF ON
OFF ON
OFF ON
OFF ON
Normal Error
Normal Defrost
OFF ON
OFF ON
OFF ON
OFF ON
— —
N L N L N L N
TBO.4 1 2 3 4
OUT15 OUT13
How to use TBO.1 to 4
Conductor
Outline view
Connect them using either way as shown above.
—
—
—
—
Signal/Max. current Max. total current
230V AC 1.0A Max.
(Inrush current 40A Max.)
230V AC 1.0A Max.
(Inrush current 40A Max.)
230V AC 1.0A Max. 4.0A (a)
(Inrush current 40A Max.)
230V AC 1.0A Max.
(Inrush current 40A Max.)
230V AC 0.1A Max.
230V AC 0.1A Max.
230V AC 0.5A Max. (Relay)
230V AC 0.5A Max. (Relay)
3.0A (b)
230V AC 0.5A Max.
230V AC 0.5A Max. (Relay)
230V AC 0.5A Max.
230V AC 0.5A Max.
230V AC 0.1A Max.
230V AC 0.5A Max.
non-voltage contact
· 220-240V AC (30V DC)
0.5A or less
· 10mA 5V DC or more
0-10V DC 5mA max.
L N L N L
TBI.4 8 7
5 6 7 8
OUTA1
OUT9 OUT8
Tool
Tool
Conductor
Top view
<Figure 5.2.2>
en
—
—
20