Mitsubishi Electric EHSC-MEC Service Manual page 25

6-12. EHSC-YM9CR2.UK, EHSC-YM9ECR2.UK, EHSD-YM9CR2.UK, EHPX-YM9CR2.UK
EHSC-YM9CR3.UK, EHSC-YM9ECR3.UK, EHSD-YM9CR3.UK, EHPX-YM9CR3.UK
Power supply
to Booster heater
3~ 400V 50Hz
L1 L2 L3
(1) (3) (5)
ECB1
2 4 6
1 3 5
A1
BHCP
2 4 6 A2
BHC1
1 3 5 1 3 5 BHC2
A1 A1
2 4 6 A2 2 4 6 A2
2 2 2
BH1 BH2
BHT
BHF
1
2
2
CNBHT
3
(BK)
1
2
CNBC
3
(GY)
1
2
3
CNBH
2 5
(WH)
7
Table 1 Signal Inputs
Name Terminal block Connector Item
IN1 TBI.1 13-14 — Room thermostat 1 input *1 Refer to SW2-1 in <6-16. DIP switch functions>.
IN2 TBI.1 11-12 — Flow switch 1 input
IN3 TBI.1 9-10 — Flow switch 2 input (Zone1) Refer to SW3-2 in <6-16. DIP switch functions>.
IN4 TBI.1 7-8 — Demand control input
IN5 TBI.1 5-6 — Outdoor thermostat input *2 Standard operation Heater operation/ Boiler operation *3
IN6 TBI.1 3-4 — Room thermostat 2 input *1 Refer to SW3-1 in <6-16. DIP switch functions>.
IN7 TBI.1 1-2 — Flow switch 3 input (Zone2) Refer to SW3-3 in <6-16. DIP switch functions>.
IN8 TBI.3 1-2 — Electric energy meter 1
IN9 TBI.3 3-4 — Electric energy meter 2
IN10 TBI.3 5-6 — Heat meter
IN11 TBI.3 7-8 —
Smart grid ready input
IN12 TBI.3 9-10 —
IN1A TBI.3 12-14 CN1A Flow sensor
*1. Set the ON/OFF cycle time of the room thermostat for 10 minutes or more; otherwise the compressor may be
damaged.
*2. If using outdoor thermostat for controlling operation of heaters, the lifetime of the heaters and related parts may
be reduced.
*3. To turn on the boiler operation, use the main remote controller to select "Boiler" in "External input setting" screen
in the service menu.
Table 2 Outputs
Name Terminal block Connector
OUT1 TBO.1 1-2 CNP1 Water circulation pump 1 output (Space heating/cooling & DHW)
OUT2 TBO.1 3-4 — Water circulation pump 2 output (Space heating/cooling for Zone1)
Water circulation pump 3 output (Space heating/cooling for Zone2) *1
OUT3 TBO.1 5-6 —
2-way valve 2b output *2
OUT4 TBO.2 4-6 CNV1 3-way valve (2-way valve) output
TBO.2 1-2
OUT5 — Mixing valve output *1
TBO.2 2-3
OUT6 — CNBH 1-3 Booster heater 1 output
OUT7 — CNBH 5-7 Booster heater 2 output
OUT8 TBO.4 5-6 — Cooling signal output
OUT9 TBO.4 3-4 CNIH Immersion heater output
OUT10 TBO.3 1-2 — Boiler output
OUT11 TBO.3 3-4 — Error output
OUT12 TBO.3 5-6 — Defrost output
OUT13 TBO.4 1-2 — 2-way valve 2a output *2
OUT14 — CNP4 Water circulation pump 4 output (DHW)
OUT15 TBO.3 7-8 — Comp. ON signal
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.
OCH571D
1
2
4
F1
6
CNPWM
(WH)
CN01
1
F2 (WH)
3
3
CNP1
TBO.1
(WH)
1
X1
M 1
1~
2
MP1 3
M X2
3
1~
M
2WV2b
1~
4
MP2
X3
5
M 1 TBO.1
1~ 6
2
MP3
3 1 CNP1
X14
1
4 3 (WH)
M
1~ 5
3
MP4
6
CNP4
(RD)
CNP4
TBO.2 1
1
(RD)
3
2
TBO.2 X5A
3
Close
1
4
M N
Open 2 5
1~
X5B
6
MXV 3
1
X4 CNV1
1
4 3
1 TBO.3
(WH)
*1 3
2 5
5
5
3
6
CNV1
4
(WH)
5
6
TBO.3
7
X10
1
Signal output 8
(Boiler)
2
X11 1 TBO.4
3
Signal output
2
(Error)
4
3
X12
5 4
Signal output
5
(Defrost)
6
X15 1
6 CNIH
7
Signal output
(OG)
3
(Comp. ON)
8
TBO.4
1 1
CNBC CNBHT
X13
1
CNIH (GY)
(BK)
M 3 3
(OG)
2
2WV2a X9
3
1 1
4
3 CNBH
X8
5 (WH)
Signal output
(Cooling)
6
7
1
3
CNBHT
(BK)
CNBC
(GY)
2 4 6 8 10 12 14
1
1 3 5 7 9 11 13
3
TBI.1
X6
1
3
X7
5
7
CNBH
(WH)
2
1 1 4
t ° t ° t °
OFF (Open)
Refer to SW2-2 in <6-16. DIP switch functions>.
Normal Heat source OFF/ Boiler operation *3
Refer to installation manual.
Item
Indoor unit powered
via outdoor unit
<How to use TBO.1 to 4>
Connect them using either way as shown below.
Tool
Tool
L N
Conductor
Conductor
Outline view Top view
BK
1
BK
CN01
2
(WH)
4
1
6
2
CN01
(WH)
4
F2 F1 6
IEC T6.3AL250V IEC T10AL250V
1
SW5
1
CN3C
(BU)
1
3 CN3C
8
LED1
(BU)
3
1
1
CNPWM
(WH)
SW4
3
6
1
CNRF
Wireless receiver
(WH)
(Option)
SW3
LED2
8
1 CN105 WiFi adapter
(RD) (Option)
LED3
SW2
8
CNIT
1
(BU)
SW1
1
CN22
(BU) 2
8
CN108
LED4
CN1A CNW5 CNW12 CN21 CN20
*1
(WH) (WH) (RD) (YE) (RD)
1 1
1
1 1 3WV
2 2
3
4 4
TBO.2
2 4 6 8 10 12 14 2 4 6 8 10 12
1 3 5 7 9 11 13 1 3 5 7 9 11 13
TBI.3 TBI.2
TBI.3
TBI.1
1 2 3 4 5 6 7 8 9 10 11 12 13 14 1 2 3 4 5 6
+ + +
– – –
1 3 1 2
t ° t °
Symbol
TB1
ECB1
MP1
ON (Short)
MP2
MP3
MP4
3WV(2WV1) 3-way valve (2-way valve 1)(Local supply)
2WV2a
2WV2b
MXV
BHT
BHF
BH1
BH2
BHC1
BHC2
BHCP
TH1
TH2
THW1
THW2
THW5
THW6
THW7
THW8
OFF ON
THW9
OFF ON
THWB1
OFF ON
THWB2
IN1
OFF ON
IN2
Heating DHW IN3
IN4
Close
Stop
IN5
Open
IN6
OFF ON
IN7
OFF ON
IN8
OFF ON
IN9
OFF ON
IN10
OFF ON
IN11
Normal Error
IN12
Normal Defrost
IN1A
OFF ON
FLOW TEMP. CONTROLLER (FTC5)
OFF ON
TBO.1−4 Terminal block <Outputs>
OFF ON
TBI.1−3 Terminal block <Signal Inputs, Thermistor>
F1
F2
SW1−5 DIP switch *See <6-16. DIP switch functions>.
X1−15
LED1
LED2
LED3
LED4
CNPWM Pump speed control signal for MP1
CN108
25
Indoor unit powered
by independent source
To outdoor Power supply To outdoor
unit unit
~/N 230V 50Hz
S1 S2 S3 TB1 L N S1 S2 S3 TB1
BK
BK
1
2
CN01
(WH) 4
6
BN BN
1
CN3C
OG OG
(BU)
3
1. Symbols used in wiring diagram are,
: connector,
2. Indoor unit and outdoor unit connecting
wires have polarities, make sure to match
terminal numbers (S1, S2, S3) for correct
wirings.
3. Since the outdoor unit side electric wiring
may change, be sure to check the outdoor
unit electric wiring diagram for service.
2WV1
4 5 6 4 5 6
TBO.2
M M
1~ 1~
3WV 2WV1
7 8 9 10 11 12 13 14 1 2 3 4 5 6 7 8 9 10 11 12 13 14
CN22
CN1A
(BU)
(WH)
1 4 1 2
t ° t ° t ° t ° t ° t °
Name
Terminal block <Power supply, Outdoor unit>
Earth leakage circuit breaker for booster heater
Water circulation pump 1(Space heating & DHW)
Water circulation pump 2
(Space heating for Zone1)(Local supply)
Water circulation pump 3
(Space heating for Zone2)(Local supply)
Water circulation pump 4 (DHW)(Local supply)
2-way valve (For Zone 1)(Local supply)
2-way valve (For Zone 2)(Local supply)
Mixing valve (Local supply)
Thermostat for booster heater
Thermal fuse for booster heater
Booster heater 1
Booster heater 2
Contactor for booster heater 1
Contactor for booster heater 2
Contactor for booster heater protection
Thermistor (Room temp.)(Option)
Thermistor (Ref. liquid temp.)
Thermistor (Flow water temp.)
Thermistor (Return water temp.)
Thermistor (DHW tank water temp.)(Option)
Thermistor (Zone1 flow temp.)(Option)
Thermistor (Zone1 return temp.)(Option)
Thermistor (Zone2 flow temp.)(Option)
Thermistor (Zone2 return temp.)(Option)
Thermistor (Boiler flow temp.)(Option)
Thermistor (Boiler return temp.)(Option)
Room thermostat 1 (Local supply)
Flow switch 1 (Local supply)
Flow switch 2 (Local supply)
Demand control (Local supply)
Outdoor thermostat (Local supply)
Room thermostat 2 (Local supply)
Flow switch 3 (Local supply)
Electric energy meter 1 (Local supply)
Electric energy meter 2 (Local supply)
Heat meter (Local supply)
Smart grid ready input (Local supply)
Flow sensor
Fuse (IEC T10AL250V)
Fuse (IEC T6.3AL250V)
Relay
Power supply (FTC5)
Power supply (Main remote controller)
Communication (FTC5-Outdoor unit)
Reading or writing data to SD card
SD card connector
: terminal block.