Mitsubishi Electric EHST17D-VM2D Service Manual page 16

6-4. E**T***-M(E)D
CNPWM
(WH)
1
3
3
CNP1
TBO.1
(WH)
1
1
M
1~
2
M
MP1 3
1~
3
M
2WV2b 1~
4
MP2
5
M
1~
6
MP3
1
M
1~
MP4
3
CNP4
(RD)
TBO.2
1
Close
M N
2
1~ Open
MXV 3
4
5
6
CNV1
(WH)
1
M
1~
3
3WV *
5
(AC motor)
TBO.3
X10
1
Signal output
(Boiler)
2
X16
3
Signal output
(thermo on)
4
X11
5
Signal output
(Error)
6
X12
7
Signal output
(Defrost)
8
TBO.4
1
Signal output
(Comp. on)
2
3
M
CNIH
1~
4
(OG)
2WV2a
1 5
6
3
7
8
CNBHT
(BK)
1
3
CNBC
(GY)
1
3
CNBH
(WH)
1
3
5
7
CN401 CNW5 CNW12 CN21 CN20
TAB1
(WH) (BU) (RD) (YE) (RD)
1 1 1 1 3
4 4 4 1
t° t° t° t° t°
t°
THW5A THW5B THW1 THW2 TH2 * TH1 TH
Symbol Name
TB1 Terminal block <Power supply, Outdoor unit>
ECB1 Earth leakage circuit breaker for booster heater
ECB2 Earth leakage circuit breaker for immersion heater
MP1 Water circulation pump 1(Space heating & DHW)
MP2 Water circulation pump 2
(Space heating for Zone1)(Local supply)
MP3 Water circulation pump 3
(Space heating for Zone2)(Local supply)
MP4 Water circulation pump 4 (DHW)
3WV 3-way valve (AC motor)
(E*PT20/30X-*M**D*, E*ST**C-*M**D)
3-way valve (Stepping motor)
(EHPT17X-*M**D*, E*ST**D-*M**D)
2WV2a 2-way valve (For Zone 1)(Local supply)
2WV2b 2-way valve (For Zone 2)(Local supply)
MXV Mixing valve (Local supply)
IHT
IH Immersion heater
IHC Contactor for immersion heater
TH1 Thermistor (Room temp.)(Option)
TH2 Thermistor (Ref. liquid temp.)
THW1 Thermistor (Flow water temp.)
THW2 Thermistor (Return water temp.)
THW5A Thermistor (DHW tank upper water temp.)
THW5B Thermistor (DHW tank lower water temp.)
THW6
THW7 Thermistor (Zone1 return temp.)(Option)
THW8
THW9 Thermistor (Zone2 return temp.)(Option)
THW10 Thermistor (Mixing tank temp.)(Option)
THWB1
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
INA1 Flow sensor
FLOW TEMP. CONTROLLER (FTC)
TBO.1-4 Terminal block <Outputs>
TBI.1-6 Terminal block <Signal Inputs, Thermistor>
F1 Fuse (IEC T10AL250V)
F2 Fuse (IEC T6.3AL250V)
SW1-6 DIP switch *See Table 3
X1-16 Relay
LED1 Power supply (FTC)
LED2 Power supply (Main remote controller)
LED3 Communication (FTC-Outdoor unit)
LED4 Reading or writing data to SD card
CNPWM Pump speed control signal for MP1
CN108 SD card connector
OCH714A
CN01
(BK)
<How to use TBO.1 to 4>
1
Connect them using either way as shown below.
3
F1
5
F2
Tool
X1
X2
Conductor
Outline view
X3
FTC board
X14
TBO.1
1
2
3
1
CNP1
X5A
4
3 (WH)
5
6
X5B
1
1
CNP4
1 TBO.2
3 (RD)
2
SW5
3
X4
4
5
8
6 1
1
CNV1
3
1 TBO.3 (WH)
5 SW4
2
3
4 6
1
5
6
7
SW3
8
1 TBO.4
8
2
1
3
4
5 SW2
X15
6
7
X13
8 8
1
CNIH 1
(OG) 1
3
X9
1 1 SW1
CNBHT
CNBC SW6
(BK)
X8 (GY) 3
3
5
8
1
3
CNBH
5 (WH)
7
TAB1
CN401 CN1A
X6
(WH) (WH)
1 1
X7
4 4
8 7 6 5 4 3 2 1 8 7 6 5 4 3 2 1 8 7 6 5 4 3 2 1 8 7 6 5 4
TBI.1 TBI.2 TBI.3 TBI.4
TBI.1 TBI.2 TBI.3
8 7 6 5 4 3 2 1 8 7 6 5 4 3 2 1 8 7 6
2
- + - + - +
IN5 IN6 IN7 IN10 IN8 IN9
IN1 IN2 IN3 IN4
1. Symbols used in wiring diagram are,
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.
4. Refer to the installation manual for the water circulation diagrams of the models other than shown below.
Table 1 Signal Inputs
Name Terminal block Connector Item
Room thermostat
IN1 TBI.1 7-8 —
1 input *1
Flow switch 1
IN2 TBI.1 5-6 —
input
Flow switch 2
IN3 TBI.1 3-4 —
input (Zone1)
Demand control
IN4 TBI.1 1-2 —
input
Outdoor thermo-
IN5 TBI.2 7-8 —
stat input *2
Room thermostat
IN6 TBI.2 5-6 —
2 input *1
Flow switch 3
IN7 TBI.2 3-4 —
input (Zone2)
Electric energy
IN8 TBI.3 7-8 —
meter 1
Electric energy
IN9 TBI.3 5-6 —
meter 2
IN10 TBI.2 1-2 — Heat meter
IN11 TBI.3 3-4 — Smart grid ready
IN12 TBI.3 1-2 — input
INA1 TBI.4 1-3 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 Item
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
OUT3 TBO.1 5-6 — (Space heating/cooling for Zone2) *1
2-way valve 2b output *2
TBO.2 4-6 CNV1 3-way valve (2-way valve) output
OUT4
— CN851 3-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 7-8 — Cooling signal output
OUT9 TBO.4 5-6 CNIH Immersion heater output
OUT10 TBO.3 1-2 — Boiler output
OUT11 TBO.3 5-6 — Error output
OUT12 TBO.3 7-8 — Defrost output
OUT13 TBO.4 3-4 — 2-way valve 2a output *2
Water circulation pump 4 output
OUT14 — CNP4
(DHW)
OUT15 TBO.4 1-2 — Comp. ON signal
OUT16 TBO.3 3-4 — Thermo ON signal
OUTA1 TBI.4 7-8 — Analog output
Do not connect to the terminals that are indicated as "—" in the "T
*1. For 2-zone temperature control.
*2. For 2-zone valve ON/OFF control.
Indoor unit powered
via outdoor unit
To outdoor
unit
Tool
Conductor L N S1 S2 S3 TB1
Top view
1
CN01
3
(BK)
1
5
CN01
3
(BK)
F2 F1
5
1
CN3C
(BU)
3
BN
LED1 1
CN3C
OG
1 (BU)
3
CNPWM
(WH)
3
1
3WV*
CN851
(Stepping
(BK)
motor)
8
1
Wireless receiver
CNRF
(WH) (Option)
LED2
5
1
WiFi adapter
CN105
LED3 (Option)
(RD)
5
1
CNIT
(BU)
5
CN22 1
(BU) 2
CN108
LED4
CNW5 CNW12 CN21 CN20
(BU) (RD) (YE) (RD)
1 1 1
1
2
3
4 4
3 2 1 8 7 6 5 4 3 2 1 8 7 6 5 4 3 2 1
TBI.5 TBI.6
TBI.4 TBI.5
5 4 3 2 1 8 7 6 5 4 3 2 1 8 7 6 5 4 3 2 1
+ - CN1A
(WH)
1 4
V
t° t° t°
t°
IN12 OUTA1 THW6 THW7 THW8 THW9
IN11
: connector, : terminal block. Function with asterisk (*) may not be available depending on model types.
OFF (Open) ON (Short)
Refer to SW2-1 in
<Table 6.6.1 DIP Switch Functions>.
Refer to SW2-2 in
<Table 6.6.1 DIP Switch Functions>.
Refer to SW3-2 in
<Table 6.6.1 DIP Switch Functions>.
Heat source OFF/
Normal
Boiler operation *3
Standard opera- Heater operation/
tion Boiler operation *3
Refer to SW3-1 in
<Table 6.6.1 DIP Switch Functions>.
Refer to SW3-2 in
<Table 6.6.1 DIP Switch Functions>.
Refer to installation manual.
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
OFF ON
0V-10V
16
Indoor unit powered
by independent source
To outdoor
Power supply
unit
~/N 230V 50Hz
L N S1 S2 S3 TB1
1
CN01
3
(BK)
5
BN
1
CN3C
OG
(BU)
3
TBI.6
8 7 6 5 4 3 2 1
CN22
(BU)
2 1
t°
t°
THWB1 THW10