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6
WIRING DIAGRAM
6-1. EHSE-YM9EC.UK, ERSE-YM9EC.UK
Power supply
to Booster heater
3~ 400V 50Hz
L1
L2
L3
(1)
(3)
(5)
ECB1
2 4 6
1
3
5
A1
BHCP
A2
2
4
6
BHC1
1
3
5
A1
1
3
5
A1
BHC2
2
4
6
A2
2
4
6
A2
2
2
2
BH1
BH2
BHF
BHT
1
2
2
CNBHT
3
(BLK)
1
2
CNBC
3
(GRY)
2
1
3
CNBH
2
5
(WHT)
7
1. S ymbols used in wiring diagram are,
terminal block.
2. I ndoor unit and outdoor unit connecting wires have polarities, make
sure to match terminal numbers (S1, S2, S3) for correct wirings,
3. S ince 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
Room thermostat
IN1
TBI.1 13-14
—
1 input
Flow switch 1
IN2
TBI.1 11-12
—
input
Flow switch 2
IN3
TBI.1 9-10
—
input (Zone1)
Demand control
IN4
TBI.1 7-8
—
input
Outdoor thermo-
IN5
TBI.1 5-6
—
stat input *1
Room thermostat
IN6
TBI.1 3-4
—
2 input
Flow switch 3
IN7
TBI.1 1-2
—
input (Zone2)
Electric energy
IN8
TBI.3 1-2
—
meter 1
Electric energy
IN9
TBI.3 3-4
—
meter 2
IN10
TBI.3 5-6
—
Heat meter
*1. If using outdoor thermostat for controlling operation of heaters, the lifetime of the heat-
ers 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
Water circulation pump 1 output
OUT1
TBO.1 1-2 CNP1
(Space heating/cooling & DHW)
Water circulation pump 2 output
OUT2
TBO.1 3-4
—
(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
Water circulation pump 4 output
OUT14
—
CNP4
(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.
OCH590B
F1
CNPWM
(WHT)
1
3
F2
3
CNP1
TBO.1
(WHT)
1
X1
1
M
1~
2
M
MP1
3
X2
3
1~
M
2WV2b
1~
4
MP2
X3
5
M
6
1~
MP3
X14
1
3
CNP4
(RED)
TBO.2
X5A
Close
1
M
N
Open
2
1~
X5B
MXV
3
X4
1
4
*1
5
5
6
CNV1
(WHT)
TBO.3
X10
1
Signal output
(Boiler)
2
X11
3
Signal output
(Error)
4
X12
5
Signal output
(Defrost)
6
X15
Signal output
7
(Comp ON)
8
TBO.4
1
X13
1
CNIH
M
3
(ORN)
2
X9
2WV2a
3
1
1
4
3
X8
5
Signal output
(Cooling)
6
7
1
3
CNBHT
(BLK)
CNBC
(GRY)
1
3
X6
1
3
X7
5
7
CNBH
(WHT)
: connector,
:
OFF (Open)
ON (Short)
Refer to SW2-1 in "6-5. DIP switch
setting".
Refer to SW2-2 in "6-5. DIP switch
setting".
Refer to SW3-2 in "6-5. DIP switch
setting".
Heat source OFF/
Normal
Boiler operation *2
Standard opera-
Heater operation/
tion
Boiler operation *2
Refer to SW3-1 in "6-5. DIP switch
setting".
Refer to SW3-3 in "6-5. DIP switch
setting".
Refer to installation manual.
Item
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
<How to use TBO.1 to 4>
1
2
Connect them using either way as shown below.
4
Tool
6
Tool
CN01
(WHT)
Conductor
Conductor
Outline view
Top view
CN01
1
TBO.1
(WHT)
2
3
1
CNP1
4
3
(WHT)
5
6
F2
F1
6.3A 250V
10A 250V
1
1
CNP4
TBO.2
1
(RED)
3
2
3
SW5
1
CN3C
4
(BLU)
3
5
8
LED1
6
1
1
1
CNPWM
CNV1
TBO.3
1
SW4
(WHT)
(WHT)
3
5
2
6
3
1
4
CNRF
5
(WHT)
SW3
6
LED2
7
8
8
1
CN105
1
TBO.4
(RED)
LED3
2
SW2
3
4
8
CNIT
5
1
(BLU)
6
1
CNIH
(ORN)
3
SW1
1
CN22
1
(BLU)
2
CNBC
CNBHT
8
(GRY)
(BLK)
CN108
3
LED4
CNBH
(WHT)
CN1A
CNW5
CNW12
CN21
CN20
(WHT)
(WHT)
(RED)
(YLW)
(RED)
1
1
1
1
1
2
2
3
4
4
2 4 6 8 10 12 14
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
1 3 5 7 9 11 13
TBI.2
TBI.1
TBI.3
TBI.1
1
2
3
4
5
6
7
8
9
10
11
12
13
1
2
1
4
1
3
1
2
t
°
t
°
t
°
t
°
t
°
Symbol
TB1
Terminal block <Power supply, Outdoor unit>
ECB1
Earth leakage circuit breaker for booster heater
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 Zone1)(Local supply)
2WV2b
2-way valve (For Zone2)(Local supply)
MXV
Mixing valve (Local supply)
BHT
Thermostat for booster heater
BHF
Thermal fuse for booster heater
BH1
Booster heater 1
BH2
Booster heater 2
BHC1
Contactor for booster heater 1
BHC2
Contactor for booster heater 2
BHCP
Contactor for booster heater protection
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)
FLOW TEMP. CONTROLLER (FTC5)
TBO.1−4 Terminal block <Outputs>
TBI.1−3 Terminal block <Signal Inputs, Thermistor>
F1
Fuse (T10AL250V)
F2
Fuse (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
11
Indoor unit powered
Indoor unit powered
by independent source
via outdoor unit
To outdoor
To outdoor
Power supply
unit
unit
~/N 230V 50Hz
L
N
S1
S2
S3
TB1
L
N
S1
S2
S3
TB1
BLK
1
BLK
BLK
2
BLK
4
1
6
1
2
CN01
2
CN01
(WHT)
4
(WHT)
4
6
6
BRN
BRN
1
1
CN3C
CN3C
ORN
ORN
(BLU)
(BLU)
3
3
Wireless receiver
(Option)
WiFi adapter
(Option)
*1
2WV1
3WV
4 5 6
4 5 6
TBO.2
TBO.2
M
M
1~
1~
3WV
2WV1
TBI.3
14
1
2
3
4
5
6
7
8
9
10
11
12
13
14
1
2
3
4
5
6
7
+
+
+
–
–
–
CN22
(BLU)
1
2
t
°
t
°
t
°
Name
8
9
10
11
12
13
14
t
°
t
°
t
°
- Quick Links:
- Service Manual
- Specifications
- Wiring Diagram
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