Mitsubishi Electric EHSC-MEC Service Manual page 16

6-3. EHSC-MECR2.UK, EHSD-MECR2.UK, EHSD-MCR2.UK, ERSC-MECR2.UK
EHSC-MECR3.UK, EHSD-MECR3.UK, EHSD-MCR3.UK, ERSC-MECR3.UK
CNPWM
(WH)
1
3
3
CNP1
TBO.1
(WH)
1
M 1
1~
2
3
M MP1
3
1~
M
2WV2b
1~
4
MP2
5
M
6
1~
MP3
X14
1
M
1~
3
MP4
CNP4
(RD)
TBO.2 X5A
Close
1
M N
Open
1~ 2
X5B
3
MXV
1
4
3
*1
5
5
6
CNV1
(WH)
TBO.3
X10
1
Signal output
(Boiler)
2
X11
Signal output 3
(Error)
4
X12
Signal output 5
(Defrost)
6
X15
Signal output 7
(Comp. ON)
8
TBO.4
X13
1
CNIH
M
(OG)
2
X9
2WV2a
3
1
4
3
X8
5
Signal output
(Cooling)
6
1
3
CNBHT
(BK)
CNBC
(GY)
1
3
X6
1
3
X7
5
7
CNBH
(WH)
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
<How to use TBO.1 to 4>
1
Connect them using either way as shown below.
2
4
F1
6
Tool
CN01
F2
(WH)
Conductor
X1
Outline view
X2
X3
1 TBO.1
2
3 CNP1
1
(WH)
4 3
5
6
IEC T6.3AL250V
1
1 CNP4
1 TBO.2
3 (RD)
2
SW5
3
4
5 8
LED1
6 1
1
X4 CNV1
TBO.3 3
1 SW4
(WH)
2 5
6
3
1
4
5
SW3
6
LED2
7
8 8
1
TBO.4
1
LED3
2
SW2
3
4
8
5
1
1
6 CNIH
(OG)
3
SW1
1 1
CNBC CNBHT
8
(GY) (BK)
3 3
1
LED4
CNBH
(WH)
7
CN1A CNW5
(WH) (WH)
1
1
2
4
2 4 6 8 10 12 14 2 4 6 8 10 12 14
1 3 5 7 9 11 13 1 3 5 7 9 11 13 1
TBI.1 TBI.3
TBI.1
1 2 3 4 5 6 7
1 2 1 4 1 3 1 2
t t 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
To outdoor
Power supply
unit
~/N 230V 50Hz
Tool
L N S1 S2 S3
TB1
Conductor
Top view
BK
1
BK
2
CN01
(WH) 4
6 1
2
CN01
CN01
(WH) 4
(WH)
F2 F1 6
IEC T10AL250V
1
CN3C
BN
(BU)
1
3
CN3C CN3C
OG
(BU) (BU)
3
1
CNPWM
(WH)
3
CNRF Wireless receiver
(WH) (Option)
CN105 WiFi adapter
(Option)
(RD)
CNIT
(BU)
1
CN22
(BU)
2
CN108
CNW12 CN21 CN20
*1
(RD) (YE) (RD)
1
1
1
3WV 2WV1
3 2
4
4 5 6 4 5 6
TBO.2 TBO.2
2 4 6 8 10 12
M M
3 5 7 9 11 13
1~ 1~
TBI.2
3WV 2WV1
TBI.3
8 9 10 11 12 13 14 1 2 3 4 5 6 7 8 9 10 11 12 13 14 1
+ – + – + –
CN22
CN1A
(BU)
(WH)
1 4 1
ON (Short)
OFF ON
OFF ON
OFF ON
OFF ON
Heating DHW
Close
Stop
Open
OFF ON
OFF ON
OFF ON
OFF ON
OFF ON
Normal Error
Normal Defrost
OFF ON
OFF ON
OFF ON
16
Indoor unit powered
by independent source
To outdoor
unit
L N S1 S2 S3 TB1
BK
BK
1
2
4
6
BN
1
OG
3
1. Symbols used in wiring diagram are,
connector, : terminal block.
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.
2 3 4 5 6 7 8 9 10 11 12 13 14
2
t ° t ° t ° t ° t ° t °
Symbol Name
TB1 Terminal block <Power supply, Outdoor unit>
MP1 Water circulation pump 1
(Space heating/cooling & DHW)
MP2 Water circulation pump 2
(Space heating/cooling for Zone1)(Local supply)
MP3 Water circulation pump 3
(Space heating/cooling for Zone2)(Local supply)
MP4 Water circulation pump 4 (DHW)(Local supply)
3WV(2WV1) 3-way valve (2-way valve 1)(Local supply)
2WV2a 2-way valve (For Zone 1)(Local supply)
2WV2b 2-way valve (For Zone 2)(Local supply)
MXV Mixing valve (Local supply)
TH1 Thermistor (Room temp.)(Option)
TH2 Thermistor (Ref. liquid temp.)
THW1 Thermistor (Flow water temp.)
THW2 Thermistor (Return water temp.)
THW5 Thermistor (DHW tank water temp.)(Option)
THW6 Thermistor (Zone1 flow temp.)(Option)
THW7 Thermistor (Zone1 return temp.)(Option)
THW8 Thermistor (Zone2 flow temp.)(Option)
THW9 Thermistor (Zone2 return temp.)(Option)
THWB1 Thermistor (Boiler flow temp.)(Option)
THWB2 Thermistor (Boiler return temp.)(Option)
IN1 Room thermostat 1 (Local supply)
IN2 Flow switch 1 (Local supply)
IN3 Flow switch 2 (Local supply)
IN4 Demand control (Local supply)
IN5 Outdoor thermostat (Local supply)
IN6 Room thermostat 2 (Local supply)
IN7 Flow switch 3 (Local supply)
IN8 Electric energy meter 1 (Local supply)
IN9 Electric energy meter 2 (Local supply)
IN10 Heat meter (Local supply)
IN11
Smart grid ready input (Local supply)
IN12
IN1A Flow sensor
FLOW TEMP. CONTROLLER (FTC5)
TBO.1−4 Terminal block <Outputs>
TBI.1−3 Terminal block <Signal Inputs, Thermistor>
F1 Fuse (IEC T10AL250V)
F2 Fuse (IEC T6.3AL250V)
SW1−5 DIP switch *See <6-16. DIP switch functions>.
X1−15 Relay
LED1 Power supply (FTC5)
LED2 Power supply (Main remote controller)
LED3 Communication (FTC5-Outdoor unit)
LED4 Reading or writing data to SD card
CNPWM Pump speed control signal for MP1
CN108 SD card connector
: