Mitsubishi EHST20C-VM2C User Manual

15
6 WIRING DIAGRAM
6-1. EHST20C-VM2C.UK, EHST20C-VM2EC.UK, EHST20D-VM2C.UK, EHPT20X-VM2C.UK,
EHST20D-VM2EC.UK, ERST20C-VM2C.UK, ERST20D-VM2C.UK
1
3
5
7
X6
X7
1
3
1
3
CNBHT
(BLK)
CNBC
(GRY)
CNBH
(WHT)
NL S3S2S1
NL S3S2S1
To outdoor
unit
TB1
ORN
ORN
YLW
YLW
GRN/YLW
To outdoor
unit
Power supply
~/N 230V 50Hz
TB1
ORN
BLU
RED
BLU
RED
YLW
GRN/YLW
1
3
CN3C
(BLU)
BLK
BLK
BLK
BLK
1
3
ORN
BRN
CN3C
(BLU)
ORN
ORN
BRN
YLW
Indoor unit powered
by independent source
Indoor unit powered
via outdoor unit
CIRCUIT BREAKER
1
3
CN3C
(BLU)
1
3
CNPWM
(WHT)
LED1
LED2
LED3
LED4
TBI.1
TBI.2
1310 12 141174 65 932 811310 12 141174 65 932 811310 12 141174 65 932 81
IN6 IN1 IN2 IN3 IN4 IN5 IN7
THW8 THW7 THW6 THW9
THWB1 THWB2
t ° t ° t ° t ° t ° t °
Main
controller
1
+
- + - + -
2
1
2
CN20
(RED)
TH1
t °
1
3
CN21
(YLW)
TH2
t °
1
4
THW1 THW2
CNW12
(RED)
t ° t °
1
2
THW5
CNW5
(WHT)
t °
CN108
5
1
Wireless receiver
(Option)
WiFi adapter
(Option)
5
1
5
1
CNRF
(WHT)
CN105
(RED)
CN22
(BLU)
1
5
Close
Open
N
X15
X12
TBO.3
TBO.2
TBO.1
F1
F2
MXV
M
1 ~
MP2
MP1
M
1 ~
CNV1
(WHT)
X11
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
(WHT)
CNP4
(RED)
CNPWM
(WHT)
TBO.1
TBO.2
TBO.3
TBO.4
CNP1
(WHT)
CNP4
(RED)
CNV1
(WHT)
CN22
(BLU)
CNIT
(BLU)
TAB1
CN01
(WHT)
F2 F1
6.3A 250V 10A 250V
SW1
SW2
SW3
SW4
SW5
1
8
1
8
1
1
5
1
3
1
3
8
1
8
1
6
CN01
(WHT)
CN01
(WHT)
2
1
4
6
2
1
1
2
4
6
4
6
CNBH
(WHT)
CNBC
(GRY)
1
1
3
1
2
1
2
1
2
CNBHT
(BLK)
1
3
7
1
3
CNIH
(ORN)
1
4
1
3
CNW5
(WHT)
CN21
(YLW)
CNW12
(RED)
CN20
(RED)
TBI.2
MP3
M
1 ~
IN8 IN9
IN10
TBI.3
TBI.3
1
4
CN1A
(WHT)
TBI.1
2WV2b
M
1 ~
M
1 ~
MP4
M
1 ~
1
3
L
(1)
N
(3)
ORN
RED
BLU
BLU
RED
ORN
IHC
IHT
IH
642
531
A1
A2
A B
2
4
Immersion heater (1Ph3kW)(Option)
Power supply
to Immersion heater
~/N 230V 50Hz
1
2
CNIH
(ORN)
3
3WV
M
1 ~
Signal output
(Boiler)
Signal output
(Error)
Signal output
(Defrost)
Signal output
(Comp ON)
Signal output
(Cooling)
ECB2
1
2
4
6
CN01
(WHT)
WHT WHT
2 2
2
ECB1
L
(1)
N
(3)
BHCP
BLU
BLU
RED
WHT/No.2 WHT/No.1
RED
VLT VLT
GRY GRY
BHC1
BHT
642
531
A1
A2
BH1
BHF
2
4
Power supply
to Booster heater
642
531
A1
A2
CNBH
(WHT)
CNBHT
(BLK)
2
2
2
CNBC
(GRY)
1
1
3
3
1
3
~/N 230V 50Hz
1
2
3
4
5
6
TBO.4
M
2WV2a
1
3
X9
X8
X13
CNIH
(ORN)
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
12 146 108
137 119
4
53
2
1
12 146 108
137 119
4
53
2
1
12 146 108
137 119
4
53
2
1
Tool
Tool
Conductor
Conductor
Outline view Top view
<How to use TBO.1 to 4>
Connect them using either way as shown below.
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/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)
3WV 3-wayvalve
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
BHC1 Contactor for booster heater 1
BHCP Contactor for booster heater protection
IHT Thermostat(xedtemp.)forimmersionheater
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.)
THW5 Thermistor(DHWtankwatertemp.)
THW6 Thermistor(Zone1owtemp.)(Option)
THW7 Thermistor (Zone1 return temp.)(Option)
THW8 Thermistor(Zone2owtemp.)(Option)
THW9 Thermistor (Zone2 return temp.)(Option)
THWB1 Thermistor(Boilerow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6-19.DIPswitchfunctions.
X1-15 Relay
LED1 Powersupply(FTC5)
LED2 Powersupply(Main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
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<6-19.DIPswitchfunctions>.
IN2 TBI.1 11-12 — Flowswitch1input RefertoSW2-2in<6-19.DIPswitchfunctions>.
IN3 TBI.1 9-10 — Flowswitch2input(Zone1) RefertoSW3-2in<6-19.DIPswitchfunctions>.
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<6-19.DIPswitchfunctions>.
IN7 TBI.1 1-2 — Flowswitch3input(Zone2) RefertoSW3-3in<6-19.DIPswitchfunctions>.
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
*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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heating/cooling&DHW) OFF ON
OUT2 TBO.1 3-4 — Watercirculationpump2output(Spaceheating/coolingforZone1) OFF ON
OUT3 TBO.1 5-6 —
Watercirculationpump3output(Spaceheating/coolingforZone2)*1
OFF ON
2-wayvalve2boutput*2
OUT4 TBO.2 4-6 CNV1 3-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”eld.
*1.For2-zonetemperaturecontrol.
*2.For2-zonevalveON/OFFcontrol.
OCH570C

Mitsubishi EHST20C-VM2C Specifications

General

Brand	Mitsubishi
Model	EHST20C-VM2C
Category	Heat Pump
Language	English