14
6-4. EHSE-MECR1.UK, ERSE-MECR1.UK
N
L
S3
S2
S1
N
L
S3
S2
S1
To outdoor
unit
TB1
OG
OG
YE
YE
GNYE
To outdoor
unit
Power supply
~/N 230V 50Hz
TB1
OG
BU
RD
BU
RD
YE
GNYE
1
3
CN3C
(BU)
BK
BK
BK
BK
1
3
OG
BN
CN3C
(BU)
OG
OG
BN
YE
Indoor unit powered
by independent source
Indoor unit powered
via outdoor unit
CIRCUIT BREAKER
1
3
CN3C
(BU)
1
3
CNPWM
(WH)
LED1
LED2
LED3
LED4
TBI.1
13
10
12
14
11
7
4
6
5
9
3
2
8
1
TBI.2
13
10
12
14
11
7
4
6
5
9
3
2
8
1
t
°
t
°
THW8
THW7
THW6
t
°
THW9
t
°
THWB1
t
°
THWB2
t
°
Main remote controller
1
2
1
2
CN20 (RD)
TH1
t
°
1
3
CN21 (YE)
TH2
t
°
1
4
THW1
THW2
CNW12
(RD)
t
°
t
°
2
1
THW5
CNW5 (WH)
t
°
CN108
5
1
Wireless receiver
(Option)
WiFi adapter
(Option)
5
1
5
1
CNRF
(WH)
CN105
(RD)
CN22
(BU)
1
2
3
4
5
6
1
*1
5
3
Close
Open
N
X15
X12
TBO.4
TBO.3
TBO.2
TBO.1
F1
F2
M
2WV2a
MXV
MP2
MP1
M
1~
1
3
CNV1
(WH)
1
3
CNBHT
(BK)
X11
X9
X8
X13
X10
X4
X14
X3
X2
X1
X5B
X5A
1
2
3
4
5
6
7
8
1
2
3
4
5
6
1
2
3
4
5
6
1
1
3
3
3
CNP1
(WH)
CNPWM
(WH)
TBO.1
TBO.2
TBO.3
TBO.4
CNP1
(WH)
CNP4
(RD)
CNV1
(WH)
CN22
(BU)
CNIT
(BU)
TAB1
CN01
(WH)
F2
F1
IEC T6.3AL250V
IEC T10AL250V
SW1
SW2
SW3
SW4
SW5
1
8
1
8
1
1
3
5
1
3
1
3
8
1
1
2
3
4
5
6
1
2
3
4
5
6
1
2
3
4
5
6
7
8
1
2
3
4
5
6
8
1
6
CN01
(WH)
CN01
(WH)
CN01
(WH)
2
1
4
6
2
1
1
2
4
6
4
6
CNBH
(WH)
CNBC
(GY)
1
1
3
1
2
1
2
1
2
CNBHT
(BK)
1
3
1
3
7
CNIH
(OG)
1
4
1
3
CNW5
(WH)
CN21
(YE)
CNW12
(RD)
CN20
(RD)
TBI.2
12
6
10
14
8
13
7
11
9
4
5
3
2
1
6
4
2
1
CNIH
(OG)
MP3
M
1~
IN8
IN9
IN10
13
10
12
14
11
7
4
6
5
9
3
2
8
1
TBI.3
TBI.3
2 4 6 8 10 12 14
1 3 5 7 9 11 13
1
4
CN1A
(WH)
2 4 6 8 10 12 14
1 3 5 7 9 11 13
TBI.1
2WV2b
M
1~
TBO.2
3WV
*1
3WV
M
1~
4 5 6
TBO.2
2WV1
2WV1
M
1~
4 5 6
M
1~
IN6
IN1
IN2
IN3
IN4
IN5
IN7
CNP4
(RD)
M
1~
1
3
Signal output
(Boiler)
Signal output
(Error)
Signal output
(Defrost)
Signal output
(Comp. ON)
Signal output
(Cooling)
–
+
–
+
–
+
Tool
Tool
Conductor
Conductor
Outline view
Top view
<How to use TBO.1 to 4>
Connect them using either way as shown below.
1
3
5
7
X6
X7
1
3
CNBC
(GY)
CNBH
(WH)
Flow Sensor
1
4
CN1A
(WH)
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.
Table 1 Signal Inputs
Name Terminal block Connector
Item
OFF (Open)
ON (Short)
IN1
TBI.1 13-14
— Room thermostat 1
input
Refer to SW2-1 in "6-5. DIP switch setting".
IN2 TBI.1 11-12
—
Flow switch 1 input
Refer to SW2-2 in "6-5. DIP switch setting".
IN3
TBI.1 9-10
—
Flow switch 2 input
(Zone1)
Refer to SW3-2 in "6-5. DIP switch setting".
IN4
TBI.1 7-8
— Demand control input Normal
Heat source OFF/
Boiler operation *2
IN5
TBI.1 5-6
— Outdoor thermostat
input *1
Standard operation
Heater operation/
Boiler operation *2
IN6
TBI.1 3-4
— Room thermostat 2
input
Refer to SW3-1 in "6-5. DIP switch setting".
IN7
TBI.1 1-2
—
Flow switch 3 input
(Zone2)
Refer to SW3-3 in "6-5. DIP switch setting".
IN8
TBI.3 1-2
—
Electric energy meter
1
Refer to installation manual.
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.
Table 2 Outputs
Name Terminal block Connector
Item
OFF
ON
OUT1 TBO.1 1-2
CNP1 Water circulation pump 1 output (Space heat
-
ing/cooling & DHW)
OFF
ON
OUT2
TBO.1 3-4
—
Water circulation pump 2 output (Space heat
-
ing/cooling for Zone1)
OFF
ON
OUT3 TBO.1 5-6
—
Water circulation pump 3 output (Space heat
-
ing/cooling for Zone2) *1
OFF
ON
2-way valve 2b output *2
OUT4 TBO.2 4-6
CNV1
3-way valve (2-way valve) output
Heating
DHW
OUT5
TBO.2 1-2
—
Mixing valve output *1
Stop
Close
TBO.2 2-3
Open
OUT6
—
CNBH 1-3
Booster heater 1 output
OFF
ON
OUT7
—
CNBH 5-7
Booster heater 2 output
OFF
ON
OUT8 TBO.4 5-6
—
Cooling signal output
OFF
ON
OUT9
TBO.4 3-4
CNIH Immersion heater output
OFF
ON
OUT10 TBO.3 1-2
—
Boiler output
OFF
ON
OUT11
TBO.3 3-4
—
Error output
Normal
Error
OUT12
TBO.3 5-6
—
Defrost output
Normal Defrost
OUT13 TBO.4 1-2
—
2-way valve 2a output *2
OFF
ON
OUT14
—
CNP4 Water circulation pump 4 output (DHW)
OFF
ON
OUT15 TBO.3 7-8
—
Comp. ON signal
OFF
ON
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.
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)
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)
Symbol
Name
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)
Symbol
Name
IN10
Heat meter (Local supply)
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
"6-5. DIP switch setting".)
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
OCH590B