Mitsubishi Electric EHSC-MEC Service Manual page 15

6-2. EHSC-MECR1.UK, EHSD-MECR1.UK, EHSD-MCR1.UK, ERSC-MECR1.UK
3
M
1~
M MP1
1~
M
2WV2b
1~
MP2
M
1~
MP3
M
1~
MP4
Close
M
Open
1~
MXV
*1
Signal output
(Boiler)
Signal output
(Error)
Signal output
(Defrost)
Signal output
(Comp. ON)
Signal output
(Cooling)
Table 1 Signal Inputs
Name Terminal block Connector Item
IN1 TBI.1 13-14 — Room thermostat 1 input
IN2 TBI.1 11-12 — Flow switch 1 input
IN3 TBI.1 9-10 — Flow switch 2 input (Zone1)
IN4 TBI.1 7-8 — Demand control input
IN5 TBI.1 5-6 — Outdoor thermostat input *1
IN6 TBI.1 3-4 — Room thermostat 2 input
IN7 TBI.1 1-2 — Flow switch 3 input (Zone2)
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
IN1A TBI.3 12-14 CN1A Flow sensor
*1. If using outdoor thermostat for controlling operation of heaters, the lifetime of the
heaters and related parts may be reduced.
*2. To turn on the boiler operation, use the main remote controller to select "Boiler" in
"External input setting" screen in the service menu.
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)
OCH571D
<How to use TBO.1 to 4>
1
Connect them using either way as shown below.
2
4
F1
6
CNPWM
(WH)
CN01
F2
1
(WH)
3
CNP1
TBO.1
(WH)
1 X1
1
2
3
X2
3
4
X3
5
TBO.1
1
6
2
X14
3 1 CNP1
1
(WH)
4 3
5
3
6
CNP4
(RD)
1 CNP4
TBO.2
1
3 (RD)
2
TBO.2
X5A
3
1
4
N
2 5
X5B
6
3
1
X4 CNV1
1
4 TBO.3 3
1
(WH)
3
5
5 2
5
3
6
CNV1
4
(WH)
5
6
TBO.3
X10 7
1
8
2
TBO.4
X11 1
3
2
4
3
X12
5
4
5
6
X15 1
6 CNIH
7
(OG)
3
8
TBO.4
1 1
CNBC CNBHT
X13
1
(GY) (BK)
CNIH
M 3 3
(OG)
2
2WV2a X9
1 3
1
4
3
CNBH
X8
5 (WH)
6
7
1
3
CNBHT
(BK)
CNBC
(GY)
2 4 6 8 10 12 14
1
1 3 5 7 9 11 13
3
X6 TBI.1
1
3
X7
5
7
CNBH
(WH)
1 2 1 4 1
t ° t ° t ° t °
OFF (Open) ON (Short)
Refer to SW2-1 in
<6-16. DIP switch functions>.
Refer to SW2-2 in
<6-16. DIP switch functions>.
Refer to SW3-2 in
<6-16. DIP switch functions>.
Heat source OFF/
Normal
Boiler operation *2
Standard opera- Heater operation/
tion Boiler operation *2
Refer to SW3-1 in
<6-16. DIP switch functions>.
Refer to SW3-3 in
<6-16. DIP switch functions>.
Refer to installation manual.
Symbol
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)
Indoor unit powered
Tool
Tool
L
Conductor
Conductor
Outline view Top view
BK
1
BK
2
CN01
(WH)
4
6 1
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
SW4
(WH)
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
(WH) (WH) (RD) (YE) (RD) *1
1 1
1
1 1
2
2 3
4 4
TBO.2
2 4 6 8 10 12
2 4 6 8 10 12 14
1 3 5 7 9 11 13
1 3 5 7 9 11 13
TBI.2
TBI.3
TBI.1 TBI.3
1 2 3 4 5 6 7 8 9 10 11 12 13 14 1 2 3 4 5 6
+ + +
– – –
3 1 2
t °
Table 2 Outputs
Name Terminal block Connector
OUT1 TBO.1 1-2 CNP1
OUT2 TBO.1 3-4 —
OUT3 TBO.1 5-6 —
OUT4 TBO.2 4-6 CNV1 3-way valve (2-way valve) output
TBO.2 1-2
OUT5 —
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 —
OUT9 TBO.4 3-4 CNIH Immersion heater output
OUT10 TBO.3 1-2 —
OUT11 TBO.3 3-4 —
OUT12 TBO.3 5-6 —
OUT13 TBO.4 1-2 —
OUT14 — CNP4 Water circulation pump 4 output (DHW)
OUT15 TBO.3 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.
Name
15
Indoor unit powered
by independent source
via outdoor unit
To outdoor Power supply To outdoor
unit unit
~/N 230V 50Hz
N S1 S2 S3 TB1 L N S1 S2 S3 TB1
BK
BK
1
2
CN01
4
(WH)
6
BN BN
1
CN3C
OG
OG
(BU)
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.
3WV 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
° ° ° ° ° °
Item
Water circulation pump 1 output (Space heat-
ing/cooling & DHW)
Water circulation pump 2 output (Space heat-
ing/cooling for Zone1)
Water circulation pump 3 output (Space heat-
ing/cooling for Zone2) *1
2-way valve 2b output *2
Mixing valve output *1
Cooling signal output
Boiler output
Error output
Defrost output
2-way valve 2a output *2
Comp. ON signal
Symbol Name
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
:
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