Mitsubishi Electric EHSE-YM9EC User manual

SERVICE MANUAL
CONTENTS
1. REFERENCE MANUAL................................... 2
2. SAFETY PRECAUTION................................... 3
3. SPECIFICATIONS............................................ 6
4. PARTS NAMES AND FUNCTIONS ................ 8
5. OUTLINES AND DIMENSIONS....................... 9
6. WIRING DIAGRAM.........................................11
7. FIELD WIRING............................................... 16
8. WATER SYSTEM DIAGRAM......................... 18
9. CONTROLS ................................................... 21
10. TROUBLESHOOTING................................... 41
11. DISASSEMBLY PROCEDURE...................... 57
12. SUPPLEMENTARY INFORMATION ............. 72
13. SERVICE AND MAINTENANCE ................... 73
Notes:
•This manual describes
service data of Hydrobox
only.
•RoHS compliant products
have <G> mark on the
spec name plate.
R410A
MAIN REMOTE
CONTROLLER
PARTS CATALOG (OCB590)
HYDROBOX
[Model Name]
EHSE-YM9EC
EHSE-MEC
ERSE-YM9EC
ERSE-MEC
[Service Ref.]
EHSE-YM9EC.UK
EHSE-YM9ECR1.UK
EHSE-MEC.UK
EHSE-MECR1.UK
ERSE-YM9EC.UK
ERSE-YM9ECR1.UK
ERSE-MEC.UK
ERSE-MECR1.UK
August 2015
HYDROBOX
No. OCH590
REVISED EDITION-B
Revision:
•AddedEHSE-YM9ECR1.UK,
EHSE-MECR1.UK,
ERSE-YM9ECR1.UK and
ERSE-MECR1.UK
in
REVISED EDITION-B.
•Somedescriptionshave
been modified.
•PleasevoidOCH590
REVISEDEDITION-A.

2
REFERENCE MANUAL
1
OUTDOOR UNIT'S SERVICE MANUAL
Model Name Service Ref. Service Manual No.
PUHZ-SW160YKA PUHZ-SW160YKA.UK
OCH583
OCB583
PUHZ-SW160YKAR1.UK
PUHZ-SW200YKA PUHZ-SW200YKA.UK
PUHZ-SW200YKAR1.UK
PUHZ-SW160YKA-BS PUHZ-SW160YKA-BS.UK
PUHZ-SW160YKAR1-BS.UK
PUHZ-SW200YKA-BS PUHZ-SW200YKA-BS.UK
PUHZ-SW200YKAR1-BS.UK
PUHZ-SHW230YKA PUHZ-SHW230YKA OCH534
OCB534
PUHZ-SHW230YKAR1
PUHZ-SHW230YKA2 PUHZ-SHW230YKA2 OCH594
OCB594
OCH590B

3
SAFETY PRECAUTION
2
WARNING
Mechanical
Thehydroboxandoutdoorunitsmustnotbeinstalled,disassembled,relocated,alteredorrepairedbytheuser.Askanauthorisedinstallerortechnician.Ifthe
unitisinstalledimproperlyormodiedafterinstallationbytheuserwaterleakage,electricshockorremayresult.
Theoutdoorunitshouldbesecurelyxedtoahardlevelsurfacecapableofbearingitsweight.
Thehydroboxshouldbepositionedonahardverticalsurfacecapableofsupportingitslledweighttopreventexcessivesoundorvibration.
Donotpositionfurnitureorelectricalappliancesbelowtheoutdoorunitorhydrobox.
Thedischargepipeworkfromtheemergency/safetydevicesofthehydroboxshouldbeinstalledaccordingtolocallaw.
OnlyuseaccessoriesandreplacementpartsauthorisedbyMitsubishiElectricaskaqualiedtechniciantottheparts.
Electrical
Allelectricalworkshouldbeperformedbyaqualiedtechnicianaccordingtolocalregulationsandtheinstructionsgiveninthismanual.
Theunitsmustbepoweredbyadedicatedpowersupplyandthecorrectvoltageandcircuitbreakersmustbeused.
Wiringshouldbeinaccordancewithnationalwiringregulations.Connectionsmustbemadesecurelyandwithouttensionontheterminals.
Earth unit correctly.
General
Keepchildrenandpetsawayfromboththehydroboxandoutdoorunits.
Donotusethehotwaterproducedbytheheatpumpdirectlyfordrinkingorcooking.Thiscouldcauseillnesstotheuser.
Do not stand on the units.
Donottouchswitcheswithwethands.
Annualmaintenancechecksonboththehydroboxandtheoutdoorunitshouldbeconductedbyaqualiedperson.
Donotplacecontainerswithliquidsontopofthehydrobox.Iftheyleakorspillontothehydroboxdamagetotheunitand/orrecouldoccur.
Do not place any heavy items on top of the hydrobox.
Wheninstalling,relocating,orservicingthehydrobox,useonlythespeciedrefrigerant(R410A)tochargetherefrigerantlines.Donotmixitwithanyotherre-
frigerantanddonotallowairtoremaininthelines.Ifairismixedwiththerefrigerant,thenitcanbethecauseofabnormalhighpressureintherefrigerantline,
and may result in an explosion and other hazards.
Theuseofanyrefrigerantotherthanthatspeciedforthesystemwillcausemechanicalfailureorsystemmalfunctionorunitbreakdown.Intheworstcase,this
couldleadtoaseriousimpedimenttosecuringproductsafety.
Inheatingmode,toavoidtheheatemittersbeingdamagedbyexcessivelyhotwater,setthetargetowtemperaturetoaminimumof2ºCbelowthemaximum
allowabletemperatureofalltheheatemitters.ForZone2,setthetargetowtemperaturetoaminimumof5ºCbelowthemaximumallowableowtemperature
ofalltheheatemittersinZone2circuit.
Donotinstalltheunitwherecombustiblegasesmayleak,beproduced,ow,oraccumulate.Ifcombustiblegasaccumulatesaroundtheunit,reorexplosion
may result.
Donotdischargerefrigerantintotheatmosphereifrefrigerantleaksduringinstallation,ventilatetheroom.
Useappropriatetoolsforhighpressurerefrigerant.
Whenpumpingdownrefrigerant,stopthecompressorbeforedisconnectingtherefrigerantpipes.
Duringinstallationsecurelyfastentherefrigerantpipesbeforestartingthecompressor.
Checkthatrefrigerantgasdoesnotleakafterthecompletionofinstallation.
UseR410Arefrigerantonly.Donotallowairtoenterthelines.Failuretoobservetheseinstructionswillcausemechanicalfailure,systemfailureor,intheworst
case, serious breach of product safety.
Please read the following safety precautions carefully.
WARNING:
Precautions that must be observed to prevent injuries or death.
CAUTION:
Precautions that must be observed to prevent damage to unit.
This service manual along with the user manual should be left with the product after installation for future reference.
Mitsubishi Electric is not responsible for the failure of locally-supplied parts.
• Besuretoperformperiodicalmaintenance.
• Besuretofollowyourlocalregulations.
• Besuretofollowtheinstructionsprovidedinthismanual.
OCH590B

4
CAUTION
Usecleanwaterthatmeetslocalqualitystandardsontheprimarycircuit.
Theoutdoorunitshouldbeinstalledinanareawithsufcientairowaccordingtothediagramsintheoutdoorunitinstallationmanual.
The hydrobox should be located inside to minimise heat loss.
Waterpipe-runsontheprimarycircuitbetweenoutdoorandindoorunitshouldbekepttoaminimumtoreduceheatloss.
Ensurecondensatefromoutdoorunitispipedawayfromthebasetoavoidpuddlesofwater.
Removeasmuchairaspossiblefromwatercircuit.
Refrigerantleakagemaycausesuffocation.ProvideventilationinaccordancewithEN378-1.
Besuretowrapinsulationaroundthepiping.Directcontactwiththebarepipingmayresultinburnsorfrostbite.
Neverputbatteriesinyourmouthforanyreasontoavoidaccidentalingestion.
Batteryingestionmaycausechokingand/orpoisoning.
Installtheunitonarigidstructuretopreventexcessivesoundorvibrationduringoperation.
Ifpowertothehydroboxistobeturnedoff(orsystemswitchedoff)foralongtime,thewatershouldbedrained.
Preventativemeasuresshouldbetakenagainstwaterhammer,suchasinstallingaWaterHammerArrestorontheprimarywatercircuit,asdirectedbytheman-
ufacturer.
Inordertopreventcondensationonemitters,adjustowtemperatureappropriatelyandalsosetthelowerlimitoftheowtemperatureonsite.
<UsingR410Arefrigerantheatpumps>
UseC1220copperphosphorus,forcopperandcopperalloyseamlesspipes,toconnecttherefrigerantpipes.Makesuretheinsidesofthepipesarecleanand
donotcontainanyharmfulcontaminantssuchassulfuriccompounds,oxidants,debris,ordust.Usepipeswiththespeciedthickness.(Referto4.4intheinstal-
lationmanual.)NotethefollowingifreusingexistingpipesthatcarriedR22refrigerant.
-Replacetheexistingarenutsandarethearedsectionsagain.
-Donotusethinpipes.(Referto4.4in the installation manual.)
Storethepipestobeusedduringinstallationindoorsandkeepbothendsofthepipessealeduntiljustbeforebrazing.(Leaveelbowjoints,etc.intheirpackag-
ing.)Ifdust,debris,ormoistureenterstherefrigerantlines,oildeteriorationorcompressorbreakdownmayresult.
Useesteroil,etheroil,alkylbenzeneoil(smallamount)astherefrigerationoilappliedtothearedsections.Ifmineraloilismixedintherefrigerationoil,oildete-
rioration may result.
DonotuserefrigerantotherthanR410Arefrigerant.Ifanotherrefrigerantisused,thechlorinewillcausetheoiltodeteriorate.
Usethefollowingtoolsspecicallydesignedforusewith R410Arefrigerant.Thefollowingtoolsarenecessaryto use R410Arefrigerant.Contactyournearest
dealer for any questions.
Tools(forR410A)
Gaugemanifold Flaretool
Chargehose Sizeadjustmentgauge
Gas leak detector Vacuum pump adapter
Torquewrench Electronicrefrigerantchargingscale
Besuretousethecorrecttools.Ifdust,debris,ormoistureenterstherefrigerantlines,refrigerationoildeteriorationmayresult.
Donotuseachargingcylinder,acylindricalmeasuringcontainer,whenchargingR410Arefrigerantgas.Iftherefrigerantgasistransferredtoachargingcylinder,
thecompositionoftherefrigerantwillchangeandsystemefciencywillbereduced.
Asforthehandlingofrefrigerant,refertotheoutdoorunitinstallationmanual.
OCH590B

Gravimeter
Unit
5
[1] Cautions for service
(1) Perform service after recovering the refrigerant left in unit completely.
(2) Do not release refrigerant in the air.
(3) After completing service, charge the cycle with specified amount of refrigerant.
(4) When performing service, install a filter drier simultaneously.
Be sure to use a filter drier for new refrigerant.
[2] Additional refrigerant charge
When charging directly from refrigerant cylinder
·CheckthatrefrigerantcylinderforR410Aonthemarketisasyphontype.
·Chargingshouldbeperformedwiththecylinderofsyphonstoodvertically.(Refrigerantischargedfromliquidphase.)
[3] Service tools
Use the service tools below as exclusive tools for R410A refrigerant.
No. Tool name Specifications
1Gaugemanifold
·OnlyforR410A
·Usetheexistingfittingspecifications.(UNF1/2)
·Usehigh-tensionsidepressureof5.3MPa·Gorover.
2Chargehose ·OnlyforR410A
·Usepressureperformanceof5.09MPa·Gorover.
3Electronic scale —
4Gas leak detector ·UsethedetectorforR134a,R407CorR410A
5Adaptorforreverseflowcheck ·Attachonvacuumpump.
6Refrigerantchargebase —
7Refrigerantcylinder ·OnlyforR410A·Topofcylinder(Pink)
·Cylinderwithsyphon
8Refrigerantrecoveryequipment —
OCH590B

6
SPECIFICATIONS
3
Model name (Service Ref.) EHSE-YM9EC.UK EHSE-MEC.UK ERSE-YM9EC.UK ERSE-MEC.UK
Overall unit dimensions 950×600×360mm(Height×Width×Depth)
Weight(empty) 62kg 60kg 63kg 61kg
Weight(full) 72kg 70kg 73kg 71kg
Watervolumeofheatingcircuitintheunit 10kg
Coolingmode NOT available Available
Unvented expansion
vessel(Primaryheating)
Nominal volume —
Chargepressure —
Safety
device
Water
circuit
(Primary)
Control thermistor 1–80°C
Pressurereliefvalve 0.3MPa(3bar)
Flowsensor Min.ow5.0L/min
Booster
heater
Manual reset thermostat 90°C —90°C —
ThermalCut-out(fordryrunprevention) 121°C —121°C —
PrimarycircuitcirculatingPump GrundfosUPMXLGE025-125180PWM
Connections
Water G1-1/2
Refrigerant(R410A) Liquid 3/8F
Gas 3/4F
Targettemperature
range
Flowtemperature Heating 25–60°C
Cooling —5–25°C
Room temperature Heating 10–30°C
Cooling — NOT available
Guaranteedoperating
range
Ambient*10–35°C( 80%RH)
Outdoor temperature
Heating See outdoor unit spec table.
Cooling —See outdoor unit spec table
(min.10°C).*2
Electrical data
Control board
Powersupply
(Phase,voltage,frequency) ~/N,230V,50Hz
Breaker(whenpowered
fromindependentsource) 10A
Booster heater
Powersupply
(Phase,voltage,frequency)
3~,400V,
50Hz —3~,400V,
50Hz —
Capacity 3kW+6kW —3kW+6kW —
Current 13A —13A —
Breaker 16A —16A —
Sound level 30dB(A)
Optional extras
●WirelessRemoteController PAR-WT50R-E ● Tankthermistor(THW5)(30m) PAC-TH011TKL-E
●WirelessReceiver PAR-WR51R-E ●Thermistor PAC-TH011-E
●RemoteSensor PAC-SE41TS-E ●Hightemperaturethermistor PAC-TH011HT-E
●
Tankthermistor(THW5)(5m) PAC-TH011TK-E ●ecodanWi-FiInterface PAC-WF010-E
●Jointpipe MAC-A454JP-E
*1Theenvironmentmustbefrost-free.
*2Coolingmodeisnotavailableinlowoutdoortemperature.
 Ifyouuseoursystemincoolingmodeatthelowambienttemperature(10°Corbelow),therearesomerisksofplateheatexchangerbreakingbyfrozenwater.
OCH590B

7
Model name (Service Ref.) EHSE-YM9ECR1.UK EHSE-MECR1.UK ERSE-YM9ECR1.UK ERSE-MECR1.UK
Overall unit dimensions 950×600×360mm(Height×Width×Depth)
Weight(empty) 62kg 60kg 63kg 61kg
Weight(full) 72kg 70kg 73kg 71kg
Watervolumeofheatingcircuitintheunit 10kg
Coolingmode NOT available Available
Unvented expansion
vessel(Primaryheating)
Nominal volume —
Chargepressure —
Safety
device
Water
circuit
(Primary)
Control thermistor 1–80°C
Pressurereliefvalve 0.3MPa(3bar)
Flowsensor Min.ow5.0L/min
Booster
heater
Manual reset thermostat 90°C —90°C —
ThermalCut-out(fordryrunprevention) 121°C —121°C —
PrimarycircuitcirculatingPump GrundfosUPMXLGE025-125180PWM
Connections
Water G1-1/2
Refrigerant(R410A) Liquid 3/8F
Gas 3/4F
Targettemperature
range
Flowtemperature Heating 25–60°C
Cooling —5–25°C
Room temperature Heating 10–30°C
Cooling — NOT available
Guaranteedoperating
range
Ambient*10–35°C( 80%RH)
Outdoor temperature
Heating See outdoor unit spec table.
Cooling —See outdoor unit spec table
(min.10°C).*2
Electrical data
Control board
Powersupply
(Phase,voltage,frequency) ~/N,230V,50Hz
Breaker(whenpowered
fromindependentsource) 10A
Booster heater
Powersupply
(Phase,voltage,frequency)
3~,400V,
50Hz —3~,400V,
50Hz —
Capacity 3kW+6kW —3kW+6kW —
Current 13A —13A —
Breaker 16A —16A —
Sound pressure level 30dB(A)
Soundpowerlevel 45dB(A)
Optional extras
●WirelessRemoteController PAR-WT50R-E ● Tankthermistor(THW5)(30m) PAC-TH011TKL-E
●WirelessReceiver PAR-WR51R-E ●Thermistor PAC-TH011-E
●RemoteSensor PAC-SE41TS-E ●Hightemperaturethermistor PAC-TH011HT-E
●
Tankthermistor(THW5)(5m) PAC-TH011TK-E ●ecodanWi-FiInterface PAC-WF010-E
●Jointpipe MAC-A454JP-E
*1Theenvironmentmustbefrost-free.
*2Coolingmodeisnotavailableinlowoutdoortemperature.
 Ifyouuseoursystemincoolingmodeatthelowambienttemperature(10°Corbelow),therearesomerisksofplateheatexchangerbreakingbyfrozenwater.
OCH590B

8
PARTS NAMES AND FUNCTIONS
4
11
7
8
<E*SE-*M*EC>
1
2
9
10
3
4
5
12
13
6
No. Partsname EHSE-*M*EC ERSE-*M*EC
1 Control and electrical box
2 Main remote controller
3Plateheatexchanger
(Refrigerant-Water)
4 Watercirculationpump1
5 Pumpvalve
6 Draincock(Primarycircuit)
7Booster heater 1,2
8 Flowsensor
9 Manometer
10 Pressurereliefvalve(3bar)
11 Automaticairvent
12 Strainer valve
13 Drain pan —
OCH590B

9
OUTLINES AND DIMENSIONS
5
Unit: mm
5-1. Technical Drawings
a
)
(
600
100±5 950
592
260
541
492
367
249
187
163
124
86
48
291
263
242
124
110
357
( 348 )
( 242 )
110
( 187 )
( 187 )
()
260
592
950100±5
40
600
48 86
124
163
187 249
367
300
492
541
110
124
193
242
263
291
( 348 )
357
a
( 232 )
110
<EHS*> (Heating system)
<Front>
Automaticairvent
Frontpanel
Earthleakage
circuit breaker
Terminal bed
Main remote controller
Pressurereliefvalve
G1/2
Back panel
support
Hook
<View from below>
<Side> <Rear>
<ERS*> (Heating and cooling system)
Manometer
Left:Powersupplywiring
(Indoorunitindependent
powersupply)
Right:Indoor/outdoorwiring
Spaceheatingflow
(ISO228-1G1-1/2-B)
Spaceheatingreturn
(ISO228-1G1-1/2-B)
Refrigerant(Liquid3/8)
Refrigerant(Gas)
*Refertodetailviewa.
Addanaccessoryto
refrigerantGASPIPE.
(FLARING)3/4F
Refrigerant(Gas)con-
nection(BRAZING)
I.D.ø25.4
Detailviewa
<Front>
Automaticairvent
Frontpanel
Earthleakage
circuit breaker
Terminal bed
Main remote controller
Pressurereliefvalve
Back panel
support
Hook
<View from below>
<Side> <Rear>
Manometer
Left:Powersupplywiring
(Indoorunitindependent
powersupply)
Right:Indoor/outdoorwiring
Spaceheatingflow
(ISO228-1G1-1/2-B)
Spaceheatingreturn
(ISO228-1G1-1/2-B)
Refrigerant(Liquid3/8)
Refrigerant(Gas)
*Refertodetailviewa.
Addanaccessoryto
refrigerantGASPIPE.
(FLARING)3/4F
Refrigerant(Gas)con-
nection(BRAZING)
I.D.ø25.4
Detailviewa
F
E
Drain pipe
PVCpipe:VP-20[O.D.ø20]
GAB
C D
F
E
AB
C D
Letter Pipe description Connection size/type
A
Spaceheating/IndirectDHWtank(primary)returnconnection G1-1/2-B
B
Spaceheating/IndirectDHWtank(primary)owconnection G1-1/2-B
CRefrigerant(Liquid) 9.52mm/Flare
DRefrigerant(Gas) BrazingconnectionI.D.ø25.4
EDischargepipe(byinstaller)frompressurereliefvalve G1/2female(valveportwithinhydroboxcasing)
F
Electrical cable inlets
Forinlets and ,runhigh-voltagewiresincludingpower
cable,indoor-outdoorcable,andexternaloutputwires.
Forinlets and ,runlow-voltagewiresincludingexternal
inputwiresandthermistorwires.
Forawirelessreceiver(option)cable,useinlet .
GDrain socket O.D.ø20
<Table5-1>
G1/2
OCH590B

10
a
bb
d
c
Service access
5-2. Service access diagrams
Service access
Parameter Dimension(mm)
a200
b150
c500
d500
SufcientspaceMUSTbeleftfortheprovisionofdischargepipeworkasdetailed
inNationalandLocalbuildingregulations.
The hydrobox must be located indoors and in a frost-free environment, for
example in a utility room.
OCH590B

11
6WIRING DIAGRAM
6-1. EHSE-YM9EC.UK, ERSE-YM9EC.UK
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
BLK BLK
BLK
BLK
1
3
ORN
BRN
ORN
ORN
BRN
YLW
Indoor unit powered
by independent source
Indoor unit powered
via outdoor unit
CIRCUIT BREAKER
1
3
1
3
LED1
LED2
LED3
LED4
TBI.1
1310 12 141174 65 932 81
TBI.2
1310 12 141174 65 932 81
IN6 IN1 IN2 IN3 IN4 IN5 IN7
t ° t °
THW8 THW7 THW6
t °
THW9
t °
THWB1
t °
THWB2
t °
Main
controller
1 2
12
CN20
(RED)
TH1
t °
13
CN21
(YLW)
TH2
t °
14
THW1 THW2
CNW12
(RED)
t ° t °
12
THW5 CNW5
(WHT)
t °
CN108
5
1
Wireless receiver
(Option)
WiFi adapter
(Option)
5
1
5
1
CN22
(BLU)
1
2
3
4
5
6
1
3
5
7
1
*1
5
Close
Open
N
X6
X15
X12
X7
TBO.4
TBO.3
TBO.2
TBO.1
F1
F2
M
2WV2a
MXV
MP2
MP1
M
1 ~
1
3
1
3
CNV1
(WHT)
1
3CNBHT
(BLK)
CNBC
(GRY)
CNBH
(WHT)
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
(WHT)
CNP4
(RED)
CNPWM
(WHT)
TBO.1
TBO.2
TBO.3
TBO.4
TAB1
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
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
2
1
4
6
2
1
1
2
4
6
4
6
CNBH
(WHT)
CNBC
(GRY)
1
1
3
1
2
CNBHT
(BLK)
1
3
1
3
7
CNIH
(ORN)
TBI.2
126 10
14
8
137 119
4
53
2
1
6
4
2
1
CNIH
(ORN)
MP3
M
1 ~
2 2 2
ECB1
L2
(3)
L1
(1) L3 (5)
BHCP
BLK
BLK
WHT
WHTWHT
BLK
REDRED
BLU/No.4
WHT/No.2 WHT/No.3 WHT/No.1
BLU/No.5 BLU/No.6
RED
VLT VLT
PNK
PNK
WHT WHT
GRY GRY
BHC2
BHC1
BHT
642
531 A1
A2
642
531 A1
A2
BH1
BHF
BH2
24 6
Power supply
to Booster heater
642
531 A1
A2
2
2
2
2
2
1
1
3
5
7
3
1
3
3~ 400V 50Hz
IN8 IN9
IN10
1310 12 141174 65 932 81
TBI.3
TBI.3
2 4 6 8 10 12 14
1357 9 11 13
2 4 6 8 10 12 14
1357 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 ~
1
3
CNBHT
(BLK)
CNBC
(GRY)
CNBH
(WHT)
Signal output
(Boiler)
Signal output
(Error)
Signal output
(Defrost)
Signal output
(Comp ON)
Signal output
(Cooling)

CNP1
(WHT)
CNP4
(RED)
CNV1
(WHT)
CN3C
(BLU)
CNPWM
(WHT)
CNRF
(WHT)
CN105
(RED)
CN22
(BLU)
CNIT
(BLU)
CN01
(WHT)
–
+– +– +
CN3C
(BLU)
CN3C
(BLU)
CN01
(WHT)
CN01
(WHT)
CN01
(WHT)
Tool
Tool
Conductor Conductor
Outline view Top view
<How to use TBO.1 to 4>
Connect them using either way as shown below.
1
2
1
2
1
4
1
3
CNW5
(WHT)
CN21
(YLW)
CNW12
(RED)
CN20
(RED)
1
4
CN1A
(WHT)
M
1 ~
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 thermo-
statinput*1
Standard opera-
tion
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
*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 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(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”eld.
*1.For2-zonetemperaturecontrol.
*2.For2-zonevalveON/OFFcontrol.
Symbol Name
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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"6-5.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

12
6-2. EHSE-YM9ECR1.UK, ERSE-YM9ECR1.UK
NL S3S2S1
NL S3S2S1
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
BK BK
BK
BK
1
3
OG
BN
OG
OG
BN
YE
Indoor unit powered
by independent source
Indoor unit powered
via outdoor unit
CIRCUIT BREAKER
1
3
1
3
LED1
LED2
LED3
LED4
TBI.1
1310 12 141174 65 932 81
TBI.2
1310 12 141174 65 932 81
IN6 IN1 IN2 IN3 IN4 IN5 IN7
t ° t °
THW8 THW7 THW6
t °
THW9
t °
THWB1
t °
THWB2
t °
Main remote
controller
1 2
12
CN20
(RD)
TH1
t °
13
CN21
(YE)
TH2
t °
14
THW1 THW2
CNW12
(RD)
t ° t °
12
THW5 CNW5
(WH)
t °
CN108
5
1
Wireless receiver
(Option)
WiFi adapter
(Option)
5
1
5
1
CN22
(BU)
1
2
3
4
5
6
1
3
5
7
1
*1
5
3
Close
Open
N
X6
X15
X12
X7
TBO.4
TBO.3
TBO.2
TBO.1
F1
F2
M
2WV2a
MXV
MP2
MP1
M
1 ~
1
3
1
3
CNV1
(WH)
1
3CNBHT
(BK)
CNBC
(GY)
CNBH
(WH)
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)
CNP4
(RD)
CNPWM
(WH)
TBO.1
TBO.2
TBO.3
TBO.4
TAB1
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
2
1
4
6
2
1
1
2
4
6
4
6
CNBH
(WH)
CNBC
(GY)
1
1
3
1
2
CNBHT
(BK)
1
3
1
3
7
CNIH
(OG)
TBI.2
126 10
14
8
137 119
4
53
2
1
6
4
2
1
CNIH
(OG)
MP3
M
1 ~
2 2 2
ECB1
L2
(3)
L1
(1) L3 (5)
BHCP
BK
BK
WH
WHWH
BK
RDRD
BU/No.4
WH/No.2 WH/No.3 WH/No.1
BU/No.5 BU/No.6
RD
VT VT
PK
PK
WH WH
GY GY
BHC2
BHC1
BHT
642
531 A1
A2
642
531 A1
A2
BH1
BHF
BH2
24 6
Power supply
to Booster heater
642
531 A1
A2
2
2
2
2
2
1
1
3
5
7
3
1
3
3~ 400V 50Hz
IN8 IN9
IN10
1310 12 141174 65 932 81
TBI.3
TBI.3
2 4 6 8 10 12 14
1357 9 11 13
2 4 6 8 10 12 14
1357 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 ~
1
3
CNBHT
(BK)
CNBC
(GY)
CNBH
(WH)
Signal output
(Boiler)
Signal output
(Error)
Signal output
(Defrost)
Signal output
(Comp. ON)
Signal output
(Cooling)

CNP1
(WH)
CNP4
(RD)
CNV1
(WH)
CN3C
(BU)
CNPWM
(WH)
CNRF
(WH)
CN105
(RD)
CN22
(BU)
CNIT
(BU)
CN01
(WH)
–
+– +– +
CN3C
(BU)
CN3C
(BU)
CN01
(WH)
CN01
(WH)
CN01
(WH)
Tool
Tool
Conductor Conductor
Outline view Top view
<How to use TBO.1 to 4>
Connect them using either way as shown below.
1
2
1
2
1
4
1
3
CNW5
(WH)
CN21
(YE)
CNW12
(RD)
CN20
(RD)
1
4
CN1A
(WH)
M
1 ~
Flow
Sensor
14
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 opera-
tion
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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(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”eld.
*1.For2-zonetemperaturecontrol.
*2.For2-zonevalveON/OFFcontrol.
Symbol Name
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Zone1)(Localsupply)
2WV2b 2-wayvalve(ForZone2)(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
Symbol Name
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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)
Symbol Name
IN8 Electricenergymeter1(Localsupply)
IN9 Electricenergymeter2(Localsupply)
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

13
6-3. EHSE-MEC.UK, ERSE-MEC.UK
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
1310 12 141174 65 932 81
TBI.2
1310 12 141174 65 932 81
t ° t °
THW8 THW7 THW6
t °
THW9
t °
THWB1
t °
THWB2
t °
Main
controller
1 2
12
CN20
(RED)
TH1
t °
13
CN21
(YLW)
TH2
t °
14
THW1 THW2
CNW12
(RED)
t ° t °
2
1
THW5 CNW5
(WHT)
t °
CN108
5
1
Wireless receiver
(Option)
WiFi adapter
(Option)
5
1
5
1
CNRF
(WHT)
CN105
(RED)
CN22
(BLU)
1
2
3
4
5
6
1
*1
5
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
(WHT)
1
3CNBHT
(BLK)
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
(WHT)
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
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
(WHT)
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
1
3
7
CNIH
(ORN)
1
4
1
3
CNW5
(WHT)
CN21
(YLW)
CNW12
(RED)
CN20
(RED)
TBI.2
126 10
14
8
137 119
4
53
2
1
6
4
2
1
CNIH
(ORN)
MP3
M
1 ~
IN8 IN9
IN10
1310 12 141174 65 932 81
TBI.3
TBI.3
2 4 6 8 10 12 14
1357 9 11 13
1
4
CN1A
(WHT)
2 4 6 8 10 12 14
1357 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
(RED)
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
(GRY)
CNBH
(WHT)
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
*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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(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”eld.
*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Zone1)(Localsupply)
2WV2b 2-wayvalve(ForZone2)(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)
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
− 5DIP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

14
6-4. EHSE-MECR1.UK, ERSE-MECR1.UK
NL S3S2S1
NL S3S2S1
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
1310 12 141174 65 932 81
TBI.2
1310 12 141174 65 932 81
t ° t °
THW8 THW7 THW6
t °
THW9
t °
THWB1
t °
THWB2
t °
Main remote
controller
1 2
12
CN20
(RD)
TH1
t °
13
CN21
(YE)
TH2
t °
14
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
3CNBHT
(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
126 10
14
8
137 119
4
53
2
1
6
4
2
1
CNIH
(OG)
MP3
M
1 ~
IN8 IN9
IN10
1310 12 141174 65 932 81
TBI.3
TBI.3
2 4 6 8 10 12 14
1357 9 11 13
1
4
CN1A
(WH)
2 4 6 8 10 12 14
1357 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
14
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”eld.
*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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)
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

15
Automatic switch to heat source only operation
Back-upheatsourceoperation(*1)willautomaticallyrunwhentheoutdoorunitstopsabnormally.Toenablethefunction,switchDIPSW2-5toON.Duringtheback-upoperation,aner-
rorcode(s)andthecontactnumberwillbedisplayedalternately.Externaloutput(OUT11)willbeavailable.Toclearthefault(s),resetthepowerbreakersontheindoorandoutdoorunits.
<Applicableerrorcodes(*2)>
E6toE9,ED,P6,P8,U1toU8,UD,UE,UF,UL,UP
(*1)Prolongedrunningoftheback-upoperationmayaffectthelifeoftheheatsource.
(*2)Forsafetyreasons,thisfunctionisnotavailableforcertainfaults.(Systemoperationmustbestoppedandonlypumpkeepsrunning.)
6-5. DIP switch setting
LocatedontheFTCprintedcircuitboardare5setsofsmallwhiteswitches
knownasDIPswitches.TheDIPswitchnumberisprintedonthecircuitboard
nexttotherelevantswitches.ThewordONisprintedonthecircuitboardandon
theDIPswitchblockitself.Tomovetheswitchyouwillneedtouseapinorthe
corner of a thin metal ruler or similar.
DIPswitchsettingsarelistedinthetablebelow.
Onlyanauthorised installercanchangeDIPswitch settingunderone'sown re-
sponsibilityaccordingtotheinstallationcondition.
Makesuretoturnoffbothindoorunitandoutdoorunitpowersuppliesbefore
changingtheswitchsettings.
DIP switch Function OFF ON Default settings:
Indoor unit model
SW1 SW1-1 Boiler WITHOUTBoiler WITHBoiler OFF
SW1-2 Heatpumpmaximumoutletwatertemperature 55ºC 60ºC ON*1
SW1-3 DHWtank WITHOUTDHWtank WITHDHWtank OFF
SW1-4 Immersion heater WITHOUTImmersionheater WITHImmersionheater OFF
SW1-5 Booster heater WITHOUTBoosterheater WITHBoosterheater OFF:E*SE-MEC
ON:E*SE-YM9EC
SW1-6 Booster heater function Forheatingonly ForheatingandDHW OFF:E*SE-MEC
ON:E*SE-YM9EC
SW1-7 Outdoor unit type Split type Packagedtype OFF
SW1-8 Wirelessremotecontroller WITHOUTWirelessremotecontroller WITHWirelessremotecontroller OFF
SW2 SW2-1 Roomthermostat1input(IN1)logicchange
Zone1operationstopatthermostatshort Zone1operationstopatthermostatopen OFF
SW2-2 Flowswitch1input(IN2)logicchange Failuredetectionatshort Failuredetectionatopen OFF
SW2-3 Booster heater capacity restriction Inactive Active OFF
SW2-4 Coolingmodefunction Inactive Active OFF:EHSE-*M*EC
ON:ERSE-*M*EC
SW2-5 Automaticswitchtobackupheatsourceoperation
(Whenoutdoorunitstopsbyerror) Inactive Active*2OFF
SW2-6 Mixingtank WITHOUTMixingtank WITHMixingtank OFF
SW2-7 2-zone temperature control Inactive Active*6OFF
SW2-8 Flowsensor WITHOUTFlowsensor WITHFlowsensor ON
SW3 SW3-1 Roomthermostat2input(IN6)logicchange Zone2operationstopatthermostatshort Zone2operationstopatthermostatopen OFF
SW3-2 Flowswitch2input(IN3)logicchange Failuredetectionatshort Failuredetectionatopen OFF
SW3-3 Flowswitch3input(IN7)logicchange Failuredetectionatshort Failuredetectionatopen OFF
SW3-4 Electricenergymeter WITHOUTElectricenergymeter WITHElectricenergymeter OFF
SW3-5 Heatingmodefunction*3Inactive Active ON
SW3-6 2-zonevalveON/OFFcontrol Inactive Active OFF
SW3-7 HeatexchangerforDHW Coil in tank External plate HEX OFF
SW3-8 Heat meter WITHOUTHeatmeter WITHHeatmeter OFF
SW4 SW4-1 Multiple outdoor units control Inactive Active OFF
SW4-2 Positionofmultipleoutdoorunitscontrol*7Slave Master OFF
SW4-3 — — — OFF
SW4-4
Indoorunitonlyoperation(duringinstallationwork) *4Inactive Active OFF
SW4-5 Emergencymode(Heateronlyoperation) Normal
Emergencymode(Heateronlyoperation) OFF*5
SW4-6 Emergencymode(Boileroperation) Normal Emergencymode(Boileroperation) OFF*5
SW5 SW5-1 — — — OFF
SW5-2
Advancedautoadaptation*8Inactive Active
OFF:OtherthanR1model
ON: R1 model
SW5-3
Capacity code
— — OFF
SW5-4 — — ON
SW5-5 — — ON
SW5-6 — — OFF
SW5-7 — — ON
SW5-8 — — — OFF
*1 When the hydrobox is connected with a outdoor unit of which maximum outlet water temperature is 55ºC, DIP SW1-2 must be changed to OFF.
*2
OUT11 will be available. For safety reasons, this function is not available for certain errors. (In that case, system operation must be stopped and only the water circulation pump keeps running.)
*3 This switch functions only when the hydrobox is connected with a PUHZ-FRP outdoor unit. When another type of outdoor unit is connected, the heating mode function is active
regardless of the fact that this switch is ON or OFF.
*4 Space heating and DHW can be operated only in indoor unit, like an electric boiler. (Refer to “Indoor unit only operation” in page 40. )
*5 If emergency mode is no longer required, return the switch to OFF position.
*6 Active only when SW3-6 is set to OFF.
*7 Active only when SW4-1 is set to ON.
*8. SW5-2, "Advanced auto adaptation" is available only for R1 models.
SW1
SW3
SW4
SW2
SW5
OCH590B

L
N
S1
S2
S3
S1
S2
S3
TB1
L
N
L1
L2
S1
S2
S3
S1
S2
S3
TB1
L2
L3
ECB1
N
L3
L1
L2
L1
16
FIELD WIRING
7
Breaker abbreviation Meaning
ECB1 Earthleakagecircuitbreakerforboosterheater
TB1 Terminal block 1
Earth
leakage
circuit
breaker
*1, *2
Outdoor unit
To control
board
Hydrobox
Wiring
circuit
breaker or
Isolating
switch
Power
supply
~/N
230V
50Hz
Earth
leakage
circuit
breaker
*1, *2
Outdoor unit
Powersupply
3~400 V,50Hz(E*SE-YM9EC)
Wiring
circuit
breaker or
Isolating
switch
To control
board
For
booster
heater
(Primarycircuit)
Hydrobox
Wiring
circuit
breaker or
Isolating
switch
Power
supply
3N~
400V,
50Hz
Option1:Hydroboxpoweredviaoutdoorunit
<1 phase>
<Figure7-1>
Electrical connections 1 phase
*1Iftheinstalledearthleakagecircuitbreakerdoes
not have an over-current protection function, install a
breakerwiththatfunctionalongthesamepowerline.
<3 phase>
<Figure7-2>
Electricalconnections3phase
Wiring
WiringNo.
×size(mm²)
Hydrobox - Outdoor unit *33×1.5(polar)
Hydrobox - Outdoor unit earth *31×Min.1.5
Circuit
rating
Hydrobox - Outdoor unit S1 - S2 *4230VAC
Hydrobox-OutdoorunitS2-S3 *424VDC
*2 Abreakerwithatleast3.0mmcontactseparationineachpoleshallbeprovided.Useearthleakagebreaker(NV).
The breaker shall be provided to ensure disconnection of all active phase conductors of the supply.
*3 Maximum45m
If2.5mm²isused,maximum50m.
If2.5mm²isusedandS3isseparated,maximum80m.
*4Thevaluesgiveninthetableabovearenotalwaysmeasuredagainstthegroundvalue.
Notes: 1. Wiring size must comply with the applicable local and national codes.
2.Indoorunit/outdoorunitconnectingcordsshallnotbelighterthanpolychloroprenesheathedexiblecord.(Design60245IEC57)
Indoorunitpowersupplycordsshallnotbelighterthanpolychloroprenesheathedexiblecord.(Design60227IEC53)
3. Install an earth longer than other cables.
4.Pleasekeepenoughoutputcapacityofpowersupplyforeachheater.Insufcientpowersupplycapacitymightcausechattering.
AfxlabelAthatisincludedwiththemanualsneareachwiringdiagramforhydroboxandoutdoorunits.
AfxlabelAthatisincludedwiththemanualsneareachwiringdiagramforhydroboxandoutdoorunits.
Description Power supply Capacity Breaker Wiring
Booster heater
(Primarycircuit)
3~400V
50Hz 9kW 16A*22.5 mm²
*1Iftheinstalledearthleakagecircuitbreaker
does not have an over-current protection
function,installabreakerwiththatfunction
alongthesamepowerline.
OCH590B

S1
S2
S3
L
N
L
N
CN01
CN01
CN01
CN01
S1
S2
S3
L
N
S1
S2
S3
S1
S2
S3
TB1
L
N
L1
L2
S1
S2
S3
S1
S2
S3
TB1
L2
L3
ECB1
N
L3
L1
L
N
17
To control
board
Outdoor unit
Wiring
circuit
breaker or
Isolating
switch
Earth
leakage
circuit
breaker
*1, *2
Power
supply~/
N
230V
50Hz
Power
supply~/
N
230V
50Hz
Earth
leakage
circuit
breaker
*1, *2
Wiring
circuit
breaker or
Isolating
switch
Hydrobox
Initialsettings
(Powersupplied
byoutdoorunit)
Modiedsettings
(Separatepower
supply to
thehydrobox)
BLACK BLACK YELLOW
BLACK
YELLOW YELLOW
YELLOW BLACK
Hydrobox
control board
White
White
Earth
leakage
circuit
breaker
*1, *2
Outdoor unit
Power
supply
3N~
400V
50Hz
Wiring
circuit
breaker or
Isolating
switch
To control
board
For
booster
heater
(Primarycircuit)
Hydrobox
Wiring
circuit
breaker or
Isolating
switch
Power
supply~/
N
230V
50Hz
Earth
leakage
circuit
breaker
*1, *2
Wiring
circuit
breaker or
Isolating
switch
Powersupply
3~400 V, 50Hz(E*SE-YM9EC)
Hydrobox
control board
Option2:Hydroboxpoweredbyindependentsource
Ifthehydroboxandoutdoorunits haveseparatepowersupplies,thefollowing requirements
MUST be carried out:
•Changeconnectorconnectionsinhydroboxcontrolandelectricalbox(seeFigure7-3).
•TurntheoutdoorunitDIPswitchSW8-3toON.
•TurnontheoutdoorunitBEFOREthehydrobox.
•Powerbyindependentsourceis not availableforparticularmodelsof outdoor unit
model.
For more detail, refer to the connecting outdoor unit installation manual.
<1 phase>
<Figure7-4>
Electrical connections 1 phase
<Figure7-3>
<3 phase>
<Figure7-5>
Electricalconnections3phase
Hydroboxpowersupply ~/N230V50Hz
Hydrobox input capacity
Mainswitch(Breaker) *216A
Wiring
WiringNo.
×size(mm²)
Hydroboxpowersupply 2×Min.1.5
Hydroboxpowersupplyearth 1×Min.1.5
Hydrobox - Outdoor unit *32×Min.0.3
Hydrobox - Outdoor unit earth —
Circuit
rating
HydroboxL-N *4230VAC
Hydrobox - Outdoor unit S1 - S2 *4—
Hydrobox-OutdoorunitS2-S3 *424VDC
Notes: 1. Wiring size must comply with the applicable local and national codes.
2.Indoorunit/outdoorunitconnectingcordsshallnotbelighterthanpolychloroprenesheathedexiblecord.(Design60245IEC57)
Indoorunitpowersupplycordsshallnotbelighterthanpolychloroprenesheathedexiblecord.(Design60227IEC53)
3. Install an earth longer than other cables.
4.Pleasekeepenoughoutputcapacityofpowersupplyforeachheater.Insufcientpowersupplycapacitymightcausechattering.
*2 Abreakerwithatleast3.0mmcontactseparationineachpole
shallbeprovided.Useearthleakagebreaker(NV).
The breaker shall be provided to ensure disconnection of all
active phase conductors of the supply.
*3 Maximum120m
*4 Thevaluesgiveninthetableabovearenotalwaysmeasured
againstthegroundvalue.
AfxlabelBthatisincludedwiththemanualsnear
eachwiringdiagramforhydroboxandoutdoorunits.
AfxlabelBthatisincludedwiththemanualsnear
eachwiringdiagramforhydroboxandoutdoorunits.
Description Power supply Capacity Breaker Wiring
Booster heater
(Primarycircuit)
3~400V
50Hz 9kW 16A*22.5mm²
*1Iftheinstalledearthleakagecircuitbreakerdoesnothave
anover-currentprotectionfunction,installabreakerwith
thatfunctionalongthesamepowerline.
*1Iftheinstalledearthleakagecircuitbreakerdoesnothave
anover-currentprotectionfunction,installabreakerwith
thatfunctionalongthesamepowerline.
OCH590B

18
WATER SYSTEM DIAGRAM
8
Notes:
• Besuretofollowyourlocalregulationstoperform
systemcongurationoftheDHWconnections.
• DHWconnectionsarenotincludedinthehydrobox
package.Allrequiredpartsaretobesourcedlo-
cally.
• Toenabledrainingofthehydroboxanisolating
valve should be positioned on both the inlet and
outletpipework.
• Besuretoinstallastrainerontheinletpipeworkto
the hydrobox.
• Suitabledrainpipeworkshouldbeattachedtoall
reliefvalvesinaccordancewithyourcountry's
regulations.
• Abackowpreventiondevicemustbeinstalledon
watersupplypipework(IEC61770).
• Whenusingcomponentsmadefromdifferentmet-
alsorconnectingpipesmadeofdifferentmetals
insulate the joints to prevent a corrosive reaction
takingplacewhichwilldamagethepipework.
<Figure8-1>
Water circuit diagram
Pa
17
18
21
24
22
23
5
3
16
9
10
11
12 14
15
19
26
46
7
8
*1
24
25
25
20
<EHS*> (Heating system)
<ERS*> (Heating and cooling system)
Local
system
Refrigerantpipe
Water
supply
DHW
Drain
Drain
Cold
water
Waterpipe
Hydrobox
Flareconnections
*1Refertothefollowingsection[Localsystem].
No. Partname EHSE-YM9EC EHSE-MEC ERSE-YM9EC ERSE-MEC
1 Control and electrical box
2 Main remote controller
3 Plateheatexchanger(Refrigerant-Water)
4 Watercirculationpump
5 Pumpvalve
6 Draincock(Primarycircuit)
7Booster heater 1, 2 - -
8 Flowsensor
9 Manometer
10 Pressurereliefvalve(3bar)
11 Automaticairvent
12 Strainer valve
13 Drain pan - -
14 THW1
15 THW2
16 TH2
17 THW5
(OptionalpartPAC-TH011TK-EorPAC-TH011TKL-E)
----
18 Outdoor unit ----
19 Drainpipe(Localsupply) ----
20 3-wayvalve(Localsupply) ----
21 DHWindirectunventedtank(Localsupply) ----
22 Coldwaterinletpipe(Localsupply) ----
23 DHWoutletpipe(Localsupply) ----
24 Backowpreventiondevice(Localsupply) ----
25 Isolatingvalve(Localsupply) ----
26 Magneticlter(Localsupply)(Recommended) ----
27 Strainer(Localsupply) ----
<Table8-1>
OCH590B

19
1-zone temperature control
2-zone temperature control 1-zone temperature control with boiler
2-zone temperature control with boiler
1-zone temperature control (2-zone valve ON/OFF control)
Local system
3
7
5
2
4
6
8
911
11
1
12
10
11
Zone1
Zone2
1
2
3
5
6
4
Zone1
1
5
4
3
6
2
13
14
15
Zone1
2
13
14
15
7
5
4
3
61
8
9
10
11
12
Zone1
Zone2
* Flowswitchspecications:12VDC/1mA/Bothnormally-openandnormally-closedtypescanbeused.(SetDIPswitch3toselectthelogics.Referto“6-5.DIPswitchsetting”.)
1. Zone1heatemitters(e.g.radiator,fancoilunit)(localsupply)
2. Mixingtank(localsupply)
3. Zone1owwatertemp.thermistor(THW6)
4. Zone1returnwatertemp.thermistor(THW7)
5. Zone1watercirculationpump(localsupply)
6. Zone1owswitch(localsupply)*
7. Motorizedmixingvalve(localsupply)
8. Zone2owwatertemp.thermistor(THW8)
9. Zone2returnwatertemp.thermistor(THW9)
Optional part :
PAC-TH011-E
Optional part :
PAC-TH011-E
10. Zone2watercirculationpump(localsupply)
11. Zone2owswitch(localsupply)*
12. Zone2heatemitters(e.g.underoorheating)(localsupply)
13. Boilerowwatertemp.thermistor(THWB1)
14. Boilerreturnwatertemp.thermistor(THWB2)
15. Boiler(localsupply)
16. Zone12-wayvalve(localsupply)
17. Zone22-wayvalve(localsupply)
18. Bypassvalve(localsupply)
Optional part :
PAC-TH011HT-E
1
Zone1
16
18
Zone1
Zone2
17
OCH590B

20
1.Checkallconnectionsincludingfactoryttedonesaretight.
2.Insulatepipeworkbetweenhydroboxandoutdoorunit.
3.Thoroughlycleanandush,systemofalldebris.(Referto4.2intheinstallationmanual.)
4.Fillprimaryheatingcircuitwithwaterandsuitableanti-freezeandinhibitorasnecessary.Alwaysuseallingloopwithdoublecheckvalvewhenllingthe
primarycircuittoavoidbackowcontaminationofwatersupply.
• Anti-freezeshouldalwaysbeusedforpackagesystems.Itistheresponsibilityoftheinstallertodecideifanti-freezesolutionshouldbeusedinsplitsystems
dependingoneachsite’sconditions.Corrosioninhibitorshouldbeusedinbothsplitandpackagesystems.
Figurebelowshowsfreezingtemperatureagainstanti-freezeconcentration.ThisgureisanexampleforFERNOXALPHI-11.Forotheranti-freeze,pleaserefer
to relevant manual.
• Whenconnectingmetalpipesofdifferentmaterialsinsulatethejointstopreventacorrosivereactiontakingplacewhichwilldamagethepipework.
5.Checkforleaks.Ifleaksarefound,retightenthescrewsontheconnections.
6.Pressurisesystemto1bar.
7.Releasealltrappedairusingairventsduringandfollowingheatingperiod.
8.Topupwithwaterasnecessary.(Ifpressurefallsbelow1bar)
Filling the System (Primary Circuit)
Draining the Hydrobox
WARNING: DRAINED WATER MAY BE VERY HOT
1.Beforeattemptingtodrainthehydroboxisolatefromtheelectricalsupplytopreventboosterheaterburningout.
2.Isolatehydroboxfromprimarywatercircuitanddrainwaterfromhydrobox.Useasuitableheatresistanthosetoassistintheseoperations.
3.Drainanyremainingwaterfromboosterheaterusingtteddraincockandhose,andthedrainvalveontheprimarycircuittosafelydraintheunit.
4.Afterthehydroboxisdrained,waterremainsinthefollowingcomponentparts.Drainwatercompletelybycheckingtheinsideoftheparts.
• Strainer(Removethestrainercover.)
• Pressurereliefvalve(Operatethevalve.)
0
−25
−20
−15
−10
−5
5
0
10 20 30 40 50
Freezingtemperature[°C]
Anti-freezeconcentration[%]
OCH590B