EHC SLIMJIM User manual

Electric Flow Boiler




E-mail: [email protected]
or visit our website
www.electric-heatingcompany.co.uk

3
GB-063C_f.615
Pleasereadandfollowtheinstallationoperatinginstructionscarefully,toensurethelonglifeandreliable
operationofthisappliance.
TheElectricHeatingCompanymaymakeminorchangeswhennecessarytotheappliancethatwillnotbe
showninthisdocument,solongasthemainfeaturesoftheboilerremainthesame.
Allboilerscomewitha24monthwarrantythatcoversalldefectsoriginatingfromfaultymaterialsandwork-
manshipinthemanufactureoftheboilers.
Thewarrantywillnotcoveranydamagetotheboilerfrompoororincorrectinstallationwork.Inadditionthe
WarrantywillnotcoveranycalloutchargesthathavenotbeenauthorisedbytheElectricHeatingCompanyLtd.
Thewarrantywillnotcoveranywaterleaksintotheboilerthatmaycausedamagetotheelectricalorelec-
troniccontrolsystem.
Allplumbingconnectionsmustbecheckedandautoairventspositionedtothesideoftheboilerandnot
directlyabovetheunit.
AMagneticFiltermustbeinstalledtotheboilersreturnpipeworkbeforethecirculationpump.Itisrecom-
mendedthatthelteriscleaned;failuretocleantheMagneticFiltermayresultinboiler/systemfailure.War-
rantycallswillnotbecoveredwheretheaboverequirementshavenotbeenmet.
The “Slim Jim” boiler is a low temperature boiler intended for use in unvented or vented central
heating systems with forced circulation.
(Protected according to legally binding directives).
This appliance is not intended for use by persons (including children) with reduced physical, sensory
or mental capabilities, or lack of experience and knowledge unless they have been given supervision
or instruction concerning the use of the appliance by a person responsible for their safety.
Children should be supervised to ensure that they do not operate or interfere with the appliance.
Page Contents
INTRODUCTION 3
PREPERATION 5
LOCATION 5
GENERAL 6
BOILER INTERNAL LAYOUT 8
INSTALLATION 9
SYSTEM PROTECTION - COMMISSIONING 11
ELECTRICAL CONNECTIONS 12
ELECTRICAL CONNECTIONS 14
CONTROL WIRING 16
BOILER CONTROL PANEL 17
TECHNICAL SPECIFICATION 18
PARTS LIST TABLE 19
INTRODUCTION

4
GB-063C_f.615
Boiler Features.
• OptionofVoltFreeOR240voltControlSignalling
• WaterLevelSensor
• HighCurrentSafetydevice
• LowMaintenance
• BoilerPowerOutputSelector
• EasytouseController
Thecentralheatingsystem,inwhichtheSlimJimboilerisbeinginstalledinto,mustbettedwiththefollowing:
Vented Systems:
• CirculationPump
• PumpValves
• F&ETank
• MagneticFilter
• AutomaticBypassifReq
Sealed Systems:
• CirculationPump
• PumpValves
• MagneticFilter
• AutomaticBypassifReq
• SealedSystemKit
• AutomaticAirVent
Instructions and Building Regulations:
Thisappliancemustbettedinaccordancewiththefollowinginstructions.
TheLocalBuildingRegulations.
TheBuildingRegulations.
TheBuildingStandards,(Scotland-consolidated)Regulations.
Localwaterbylaws.
BritishStandardscodeofpractice.
BS EN 12828
Heatingsystemsinbuildings.Designforwater-basedheatingsystems.
BS EN 12831
Heatingsystemsinbuildings.Methodforcalculationofthedesignheatload.
BS EN 14336
Heatingsystemsinbuildings.Installationandcommissioningofwaterbasedheatingsystems.
BS7671: 2015
Requirementsforelectricalinstallations.IEEWiringRegulations.Seventeenthedition.
BS EN 13831
Closedexpansionvesselswithbuilt-indiaphragmforinstallationinwater.
C.O.S.H.H.
Materialsusedinthemanufactureofthisappliancearenonhazardousandnospecialprecautionsarere-
quiredwhenttingorservicingthisappliance.

5
GB-063C_f.615
1. Load Check
 Aloadcheckmustbetakenintoconsiderationwheninstallinghighpowerboilers.Thiscanbecarriedout
byaqualifiedelectrician.Theremaybearequirementtoupgradethemainincomingfusesupplyingthe
property;thiswilldependontheboileroutputbeinginstalledandexistingelectricalloadrequirementsof
theproperty.
2. Boiler location
 Theboilermustbeinstalledontoawallthatwillprovideanadequatefixing.Precautionsmustbetakenif
theboileristobeinstalledinareassubjecttodamporfrostconditions.
3. Central heating (design & installation)
 DetailedrecommendationsaregiveninBSEN12828,BS6700:+A1andCP342-2.
 Pipesformingpartoftheusefulheatingsurfaceshouldbeinsulatedtopreventanypotentialheatlossor
frostdamage.(BS6700).
 Drainvalvesshouldbefittedatthelowestpointofthesystempipeworkinanaccessibleposition.Drain
valvesshouldbeinaccordancewithBS2879andcoppertubetoBSEN1057isrecommended.
PREPERATION
LOCATION
Theboilercanbeinstalledinalmostanylocationwithinadomesticorcommercialproperty;howevercon-
siderationshouldbemadeforfuturemaintenance.Neverleavetheboilerswitchedoffifthereisadangerof
havingtemperaturesbelow0°Cintheroomwhereitislocated,(Anadditionalfroststatmustbeusedifthere
isalikelihoodofthetemperaturefallingbelow0°C).

Werecommendthataminimumclearanceof400mmshouldbeallocatedfortheremovalofthefrontcover
toallowadequateaccesstotheboilersplumbingandtheinternalelectricalconnections.A50mmallowance
shouldbemadeateithersideoftheboilertoallowfreeowairintotheboiler.

!The boiler must be installed in the upright position; failure to do so will invalidate the Warranty!

6
GB-063C_f.615
GENERAL
1. General
 Theboilermustbeinstalledbyaprofessionalplumberorheatingengineerandmustbeconnectedto
thepubliclowvoltagenetworkbyacompetentperson.Werecommendthisisinstalledbya17thEdition
certiedElectrician.
The Electric Heating Company Ltd will not be held responsible for any faulty installations which
are performed by un-qualified tradespersons.
2. Pipe Connections
 SlimJimElectricBoilershave22mmcompressionconnectionsattheboiler’sowandreturnpipes.Please
notethattheboilersaresuppliedwithblankingplugsfortransitpurposes.Thesemustberemovedbefore
connectionstoexternalpipescanbemade.
The Flow Outlet (TopRedConnection)andReturnInlet(BottomBlueConnection)areclearlymarked
withintheboilercase.Under nocircumstancesshouldtheseconnections bereversed. HotSoldered
Jointsshouldnotbemadeasadirectconnectiontotheboiler,Compressionjointsshouldused.
3. Case Removal
 Inordertotakeoffthefrontcover,undothexingscrewsatthetopandbottomoftheunitandpullthe
covertowardyou,Careshouldbetakennottodamagethefrontcontroller.
4. Isolation Valves
 Werecommendthatlock-shieldisolationvalvesarettedontheFlowandReturnpipe-work.Suchvalves
mustbefullboreandnot“ballvalves”.Theinstallationof“ballvalves”intheowandreturnpipe-work
willreducetherecommendedowratesthroughtheboiler.

!Care must be made when installing the isolation valves that the PRV and expansion positions
are not impaired.
5. Auto air vents
 Anautoairventmustbettedtotheexternalpipeworkwheninstalledinanunventedsystem.

!Do not install AAV’s directly above the SlimJim boilers. AAV’s should be installed to either the
top left or right hand side of the boilers. (This is to prevent any water entering the boiler in the event
of an AAV leaking).
6. Boiler Sizing
 Calculatethe“SpaceHeating”requirementsinaccordancewithBSEN12831andBSEN14336.Ifthe
boileristoheatthedomestichotwater,anadditionalallowanceof3kW(10,239Btu’s)shouldbemade
tothe“Spaceheating”calculationtodeterminethecorrectboileroutput.
7. Insulation
 Wherepractical,andifpossible,werecommendthatallpipe-workisinsulated,inparticulartheprimary
pipe-workwithinaboilercupboard.Thisistoreduceheatlossandreducehighcupboardtemperatures
fromexposedpipe-work.(BS6700+A1).
8. System Design
 AstheSlimJimboilersareoflowwatercontentanopencircuitmustbeachievedincorporatingapprox2
metresofcontinuous22mmpipeworkaftertheboilerconnectionsandbeforeanyzonevalves.(SPlan)
Wealsorecommendthatamagneticlterisusedandinstalledintothereturnpipeworkofthesystem
beforethepumpaspertheschematiconpage10.Provisionshouldbemadetoallowtheltertobe
cleanedwithoutdrainingthefullheatingsystem.

7
GB-063C_f.615

!We recommend the use of an automatic bypass within this circuit.
 Ifabypassradiatorisusedanallowanceshouldbemadeforaminimumradiatorsizeof600mmx600mm
singleconvectororequalto2500Btutobeinstalledwithintheheatingcircuitandlockedopen.
 (Thiswillbelocatedintheroomwherethethermostatisinstalled).
 Tocomplywithbuildingregulations,PartLandPartJ(inScotland),roomandcylinderthermostatsmust
betted.
9. Water Connections
 Provisionsmustbemadeforthereplacementofwaterlostfromtheheatingsystem(sealedsystems).
ReferenceshouldbemadetoBSEN14336forthemethodofllingandmakeupofwater.Theremustbe
nodirectconnectionbetweentheboilerscentralheatingsystemandthemainwatersupply.Whenmains
waterisrequiredtollthesystemdirectly,alllocalwaterbylawsmustbeobserved,andanyconnection
mademustbedisconnectedafteruse.
10. Flushing
 Thesystemmust be ushedtowithin10%ofmainswaterPPMtoensurethatnodebrisistrappedin
theowsensorasthismayresultinboilerfailure.Whereexistingradiatorsandpipe-workareutiliseda
powerushmustbecarriedouttoremovedebris.
11. System Pressures
 Allboilersarepressuretestedinthefactory.Thenormalworkingpressureoftheboilershouldbesetto
approx1.0/1.5bar.Allsealedsystemsshouldcomplywiththerelevantbuildingregulationsandstandards,
includingBSEN13831-SpecicationforExpansionVessels.

!It is imperative that a pre-installed magnetic lter is removed and cleaned annually. Failure to
carry out this action will increase contamination of the boiler by the system residue.

8
GB-063C_f.615
Figure 1
1 - Flow Outlet Connection
2 - Run Dry Sensor
3 - Outlet Temperature Sensor
4 - Heat Exchanger
5 - Power Board
6 - Contactor
7 - WT3 Safety Thermal Cut-Out
8 - Inlet Temperature Sensor
9 - Control board
10 - Return Inlet Connection
11 - Pump & Control Cable Entry Points
12 - Main Power Entry Point
13 - Front Control Panel
1
2
3
6
5
7
8
9
10
11
12
13
4

!The boiler is tted with a safety temperature cut-out that protects the boiler from failure. The
safety temperature cut-out (Item 7) cuts the power to the boiler if the temperature reaches approx 100°C.
if this occurs the boiler will shut off the main power to the unit. A service engineer will be required to
re-set the boiler. However further investigation will be required to identify the cause of the fault.
BOILER INTERNAL LAYOUT

9
GB-063C_f.615
12. System types
 The“SlimJim”boilerrangecanbeusedinvarioussystemdesignsincludingunderoorsystems.There
aretwoheatingschematicsonpage10Figure1&2thatillustrateanIndirectSystem(SPlan)&Direct
System(HeatingOnly).
 WerecommendtheuseofThermostaticRadiatorvalvesonallradiatorsexcludingthebypassradiator;this
radiatorshouldbettedwithlockshieldvalvesandleftinthefullyopenposition.Inadditionwerecommend
thatanautomaticbypassisusedinzonedsystemsandsettotherelevantowratesrequiredforthe
systemdesign.(Thebypassradiatorshouldbeaminimumsizeof600mmx600mmsingleconvector
orequalto2500Btutobeinstalledwithintheheatingcircuitandlockedopen.Thiswillbelocatedinthe
sameareaastheroomthermostat).

!The system design should meet all current building regulations in force at the time of installation.
13. Hanging the Boiler
1 Takecarewhenremovingtheboilerfromitspackaging.Donotopenwithsharpobjectsasthismay
damagetheunit.
2 Hangtheboilerinaverticalpositionusingthetemplateandscrewsprovidedwithintheboilerpackaging.
Takecaretoleavealltherecommendedclearancesasshownintheschematicdrawingbelow.
3 AClearanceofapprox400mmatthefrontoftheunitisrecommendedtoallowaccessforanyfuture
maintenancethatmayberequired.
INSTALLATION
M4x8
M4x8
C
D
D
C
130
35
780
850
200
203
765
130
min.300
min.50
min.50
Front Cover Fixing Screws Boiler Dimensions & Fixing Positions

10
GB-063C_f.615
Figure 2
aav
Expansion Vessel
Pump
Magnetic Filter
Gauge
PRV
Flow
Return
Filling
Loop
Auto Bypass
aav
HW
Cylinder
Zone
valve
Zone
valve
Pressure
aav
Expansion Vessel
Pump
Magnetic Filter
Gauge
PRV
Flow
Return
Filling
Loop
Auto Bypass
Pressure
Figure 1

!The boilers may also be congured to run multi zone heating systems or under oor heating
circuits if required.

11
GB-063C_f.615
SYSTEM PROTECTION - COMMISSIONING
14. System protection
Failuretoprotectthesystemwillinvalidatethemanufac-
turer’swarranty.Afterthesystemhasbeeninstalledthe
cleansingandinhibitingproceduremustbecarriedoutas
follows:
Procedure:
1. Fill the system with cold mains water to the recom-
mendedpressure1.5barandcheckforleaks,thendrain
thesystemthoroughlymakingsurealldraincocksare
fullyopenandthatthesystemiscompletelydrained.
2. Add Fernox Heavy Duty restorer through the header
tankorviallingloopattherecommendeddose.One
bottlemustbeusedasaminimumperdwelling.Ifyou
areunsureofthecorrectdoserate,contactFernox.
3. Re-llthesystemandcirculatetheHeavy-DutyRestorer
priortotheboilerbeingredup,thencommissionthe
systeminthenormalway.Thecleansingagentmust
beinthesystemforaminimum1hourwiththesystem
at normal operating temperature.A longer period of
timewouldbemorebenecialtothecleansingprocess
especiallyifexcessuxwasused.
4. Drainandushthesystemthoroughlytoremovethe
cleaningagentandanydebrisorcontaminant.Thisisa
criticalpartofthecleaningprocessandmustbecarried
outcorrectly.Usearinsetestmeter(TDS),suchasthe
FernoxCTM.Thereadingmustbewithin10%ofthe
mainsppmvalue.
5. ThenaddtheFernoxProtector(CopalMB1orSuper
concentrate). This will protect against the formation
ofscale,corrosionandmicrobiologicalgrowths.Itis
crucialhowever,thatfortheprotectortoworkcorrectly,
thesystemmustbeproperlycleansedandushed.
6. ThelabelincludedwithintheFernoxProtectorcarton
shouldbecompletedandattachedadjacenttotheboiler.
7. Werecommendinhibitorlevelsarecheckedonanan-
nualbasis(usuallyduringtheservice)orsoonerifthe
systemcontentislost.Thisshouldbecarriedoutusing
aFernoxinhibitorTestKit.
8. FernoxTechnicalServiceHelplineon08708700362
forfurtherassistance.
IFSUPPLIEDWITHTHEGRUNDFOSSUPM3PUMP
15. Start-up / Commissioning
1. Ensuresystemislledwithwater&vented.
2.
Checkiftheappropriatesysteminstallationpressureis
reached
3. Switchtheboileron&setexternalcontrolstocallfor
heat.
4. Checkthepumpissettothecorrectmode(seetable
below).Todothis,press buttonfornomorethan2
seconds.TheLED’sshouldsignalanoperatingmode
attheplacepointedbyarrow.
5. IftheLEDsaresignalingadifferentoperatingmodethan
recommendedinthetablebelow,settheappropriate
modeaccordingtothefollowinginstructions:press 
buttonforlongerthan2seconds,butlessthan10sec-
onds(LED’swillstarttoash),thepumpthenswitches
tothesettingsmode.LEDsglowstoindicatethecur-
rentsettings.Tochangethesettingsofthepumpin
accordancewiththetablebelow,youcansettheright
combinationofglowingLEDsbypressingthe button.
OnceLEDcombinationissetcorrect,bynotpressing
Rated
power
[kW]
Pump lifting
height [m]
LED 1
red
LED 2
yellow
LED 3
yellow
LED 4
yellow
LED 5
yellow
4● ●
4 - 7 5 ● ● ●
10 - 12 6 ● ● ● ●
12 - 14 7 ● ● ●

If the pump has detected one or more alarms, the bicolored LED
1 switches from green to red. When an alarm is active, the LEDs
indicate the alarm type as defined in the table below. If multiple
alarms are active at the same time, the LEDs only show the error
with the highest priority. The priority is defined by the sequence
of the table. When there is no active alarm anymore, the user in-
terface switches back to operation mode.
  



One red LED + one
yellow LED (LED 5)
Rotor is
blocked.
Trying to start
again every 1,5
seconds
Wait or deblock
the shaft.
One red LED + one
yellow LED (LED 4)
Supply volt-
age too low
Only warning
pump runs
Control the sup-
ply voltage
One red LED + one
yellow LED (LED 3)
Electrical
error
Pump is stopped
because of low
supply voltage or
serious failure
Control the supply
voltage /Exchange
the pump
LED
1
2
3
4
5
LED
thebuttonfor10secondsthepumpwillremember
buttonfor10secondsthepumpwillrememberthisset-
tingandwillexitfromsettingmodebacktoperformance
view.
Note: holding button for more than 10 seconds
will enter the pump into key lock mode. This pre-
vents the user from altering the pump settings. To
remove the key lock the pump settings and allow
the pump settings to be changed, hold button
again for more than 10 seconds.
6. Ensureadequateowthroughtheboilerisreached.The
pumpshouldselfventafterashortperiodofrunning.
Ifnecessaryassisttheventingprocessinthefollowing
way;Warningthescrewheadinthecentreofthepump
isnotintendedtobeusedtoassistventingofthepump,
Damagetothepumpinternalsmayoccur!
• closetheisolationvalveontheoutlet,
• leaveboilerrunningfor15sec.
• opentheisolationvalve.,
7. Switchtheboileroff.
8. Settheboilertotherequiredsystemtemperature,see
the„Operating”section.

12
GB-063C_f.615
ELECTRICAL CONNECTIONS

! All wiring must be carried out in accordance with current IEE wiring regulations BS:7671
(all electrical connections must be made by a qualied tradesperson).
LOAD CHECK
Aloadcheckmustbetakenintoconsiderationwheninstallinghighpowerboilers.Thiswillbecarriedoutbya
qualiedelectrician.Theremaybeanadditionalrequirementtoupgradetheincomingmainfusesupplyingthe
propertyifotherhighpowerdevicesareusedwithintheproperty.E.gElectricShowers.Ifanelectricshower
ispresentwerecommendthataShowerSensorisinstalledwithinthesystem.Thiswillcauseaninterruptto
theboilerscontrolsignalwhentheshowerisinuse.Itwilldisabletheboilerprotectingtheelectricalsystem
fromoverload.
Allboilersmustbeprotectedatthemeterpositionwitha30mAdoublepoleRCDwithaminimumof3mm
contactseparationaccompaniedbyasuitableratedMCB.Iftheboilerisnotttedlocaltothemeterposition
thenanadditionalisolationswitchmustbettedlocaltotheboilerforeachsupply.
THIS APPLIANCE MUST BE EARTHED.
Allpipe-workmustbeearthedinaccordancewiththeIEEBS7671WiringRegulations.
Aftercompletionofallelectricalworks,anelectricalsafetycheckshouldbecarriedouti.e.shortcircuit,earth
continuity,resistancetoearthandpolaritycheck,andallrelevantTestCerticatescompleted.
ELECTRICAL CONNECTIONS
TheelectricalconnectionsareclearlymarkedinthebottomLHSideoftheunit.
L N
(24hrLIVE)
The24hr liveis thepermanent Feedconnection tothe boilerfrom themains
supply.Externalcontrolswillrequireanindependentfusedspursuppliedfromthe
consumerunit,howeverthisfusedspurshouldbesuppliedbythesamepower
source&protectedbythesameRCDastheboileritself,thecontrolcircuitshould
beprotectedbya6AmpMCB.TheBoiler&controlcircuitRCDshouldbeindepend-
entofallotherdomesticcircuits.Theboilersupplycableshouldbecalculatedby
themeansofacablecalculationinaccordancewithBS7671byasuitablyqualied
electrician.
BOILER PROTECTION
Therecommendedprotectionisasfollows:
MODEL NO BOILER SIZE PROTECTION
EHCSJIM4KW-4kWOUTPUT BOILER20AMPProtection
EHCSJIM7KW-7kWOUTPUT BOILER40AMPProtection
EHCSJIM10KW-10kWOUTPUT BOILER50AMPProtection
EHCSJIM12KW-12kWOUTPUT BOILER63AMPProtection
EHCSJIM14.4KW-14.4kWOUTPUT BOILER80AMPProtection
EXTERNAL CONTROLS
WerecommendtheuseoftheSingleChannelHeatPackforheatingonlyinstallations.ForHeatingandHot
waterinstallationswerecommendtheuseoftheTwinChannel’HeatPack’.
The‘HeatPack’willincorporatealltherelevantpartstocomplywithcurrentbuildingregulationsi.eCirculation
Pump&MotorizedValvestocontroltheheatingandhotwatercircuitsandRoomandCylinderThermostats
tocontroltheroomandhotwatertemperatures.Thiswillalsoprovideboilerinterlock.TheuseofTRV’salone
willnotprovideboilerinterlock.

!This control method is recommended by TACMA (The Association of Control Manufactures)
in order to comply with the current building regulations.

13
GB-063C_f.615
Slim Jim
Boiler
General Electrical Network Connection
L N
Main Power Electrical Connection L N E
Figure 1
Figure 2

14
GB-063C_f.615

2
7
1
3
8
9
12
11
10
5
MSK.72
ELECTRICAL CONNECTIONS
MSK.72 Control Board
[1] - Pre-wired Control board supply
[2] - Front panel control ribbon connection
[3] - Flow temperature sensor
[4] - Power Stage Selector + 240 volt control enable selector.
[5] - Return Temperature Sensor
[6] - Power Board Control Connection
[7] - Water Level Sensor. The wire must be connected to one of two slots (both are the same).
[8] - L N Contactor Connections
[9] - Pump Fuse 1A 240V (slow blow)
[10] - RP Volt Free Control Connections
[11] - 240 Volt Control SW live & Neutral Connections (Optional)
[12] - External Pump Supply Connections N L E

15
GB-063C_f.615
Volt Free
Control Signals
1 POWER STAGE
VOLT FREE
2 POWER STAGE
VOLT FREE
3 POWER STAGE
VOLT FREE
240 Volt
Control Signals
1 POWER STAGE
240 VOLT
2 POWER STAGE
240 VOLT
3 POWER STAGE
240 VOLT
Dip Switch Settings
External Control Options:
TheSlimjimboilerscanbeusedwithVoltFreeor240voltcontrolsignals.
Volt Free control operation.RemovethelinkfromtheRPConnection(10)andconnectyourexternalvolt
freecontrolcableshere.Whenthisconnectionis“Closed”theboilerwillre,andwhen“Open”theboilerwill
beinstandby.(Thecontrolenabledipswitch4mustbeintheOFFpositionasshowninthetablebelow).
240 volt control operation.ThelinkmustbeleftintheRPConnections(10)andaliveSWandNeutral
connectedtothecontrolterminals(11)ToenablethefeatureyoumustselectDip4toON.Thisislocatedat
thetopLHSofthecontrolBoard.(Thecontrolenabledipswitch4mustbeintheONpositionasshownin
thetablebelow).
Boiler Output Control.
YoucancontrolallSlimJimboilerspoweroutputsin3stagesbyselectingdipswitchessettingsasshown
inthetablebelow.
e.g.Ifa6kWisusedanddipswitch1on= 2kW Output – 6kWboilerdipswitch1&2on= 4kW Output –
6kWboilerdipswitch1,2&3on= 6kW Output.

16
GB-063C_f.615
CONTROL WIRING
PROGRAMMER CYL STAT
N L 1 2 3 4 1 2 3
10987654321
L
N
E
240V
SUPPLY
3A Switched
Fuse Isolator
R P
Volt Free Boiler
Control
Connections
Junction
box
1 2 3
ROOM STAT
GRBRBL OR
HW zone valve
GRBRBL OR
CH zone valve
6 Amp
PROGRAMMER ROOM STAT
N L 1 2 3 4 1 2 3
10987654321
L
N
E
240V
SUPPLY
R P
Volt Free Boiler
Control
Connections
Junction
box
3A Switched
Fuse Isolator
6 Amp
Figure 1
Heating & Hot Water Wiring: S Plan (Volt Free Output)
UsedforIndirectPlumbingSystems

! This S plan wiring schematic will provide a volt free contact across the boilers RP Connections.
No voltage has been taken to the Grey cable of the zone valves therefore creating a volt free contact
across the grey & orange switch wires of the valves when heating or hot water is in demand.
If the boiler is connected to an existing heating control system with 240 Volt switching then the boilers
control board should be setup as mentioned on page 14 (240 Volt control signals).
Figure 2
Heating Only Wiring (Volt Free Output)
UsedforDirectPlumbingSystems

! The Boilers Control PCB will be damaged if a voltage it put to the RP connections!

17
GB-063C_f.615
BOILER CONTROL PANEL
OFF
0
30
40
13
5
2 4
Front Control Panel LED introduction;
[1] - Power Indicator
[2] - Boiler Operation Indicator
[3] - Heat Call Indicator
[4] - Low Water Indicator
[5] - On/Off & Temperature Dial
User instructions,
TheControlpanelislocatedontheoutsideboilercover.Itconsistsofadualpurposedialthatallowsyouto
selecttheboilerOutputTemperatureorSwitchtheBoilerOnorOff.Toswitchtheboiler“Off”Yousimplyturn
thedialAnticlockwisetothe“Offposition.”Indicator(1)willashandtheboilerwillshutdownandstopheat-
ingthesystem.Thepumpwillrunforafurther90secondsthenturnoff.Iftheboilerisleftintheoffposition
thecontrolsystemwillrunthepumpperiodicallytopreventsystemfailure.
Toswitchtheboiler“On”simplyturnthedialClockwisetoyourdesiredtemperaturesettinggenerallyaround
65degC.Theboilerwillnowsitinstandbywaitingforacallfromtheexternalcontrolstoreandheatthe
systemwhenrequired.
LED Functions and Fault Finding
FUNCTIONS ON-OFF
STAND-BY
BOILER
HEATING
CALL FOR
HEAT
WARNING
INDICATOR
All LED’s Off
CheckthatMainPowerisON?
Check–WT3OverHeatStat?IfWT3
requiresre-setinginvestigatethecause! off off off off
Boiler is ON
WaitingforCallfromexternalcontrols. on off off off
Boiler is ON and running.
ExternalControlsareCallingforheat on on on off
Low Water Level
TopupHeatingSystemWaterLevel. off off off on
Temperature Sensor Failure.
Theboilerwillstillheatiftheinletsensorhas
failedbutnottheoutletsensor!
ReplaceBothSensors.
Overheatingcanbepossible(“MaxInlet
temperaturereached”-condition).Controller
decreaseapowerinthissituation.
off ashing off on
Max Inlet Temperature reached.
Nodemandfromsystem. on off ashing off
Boiler Off
LEDwillashfor90secondsuntilthepump
stops. ashing off off off
Figure 3

18
GB-063C_f.615
EHCPartNumber: EHCSJIM
4KW
EHCSJIM
7KW
EHCSJIM
10KW
EHCSJIM
12KW
EHCSJIM
14.4KW
Boilerrange kW 4kW 7kW 10kW 12kW 14.4kW
Pipeentryboilers-flow top
Pipeentryboilers-return bottom
Centralheatingflow&return
pipes mm 22
Maxpressure bar 3
Min.pressure bar 0,5
Outflowwatertemperature °C 30÷80
Max.watertemperature °C 100
Overalldimensions(heightx
widthxdepth) mm 912x203x172
Weight kg 11
Waterconnection mm 22
Safetyclass IP22
Electricalsupply VAC 240V1ph50Hz
Loadcurrent A 16,7 29,2 41,7 50,0 60,0
Minimumpermittedcablediameter mm 6 10 16
Heatoutput(Btu/h)
BTU/h 13648 23885 34121 40946 49135
Temperaturesetting(factoryset) °C 80
Min.temperaturesetting °C 30
Overheatprotection °C 100
Protection A 20 40 50 63 80
TECHNICAL SPECIFICATION

Pos. Service
code Picture number Name Amount (pcs) Notice
1
01629 EKCO.A1-01.00.00/01 HeatingboxEKCO.A14kW/230V
1 E1
01630 EKCO.A1-01.00.00/02 HeatingboxEKCO.A17kW/230V
01631 EKCO.A1-01.00.00/03 HeatingboxEKCO.A110kW/230V
01632 EKCO.A1-01.00.00/04 HeatingboxEKCO.A112kW/230V
01633 EKCO.A1-01.00.00/05 HeatingboxEKCO.A114,4kW/230V
2
3 01635 EKCO.A1-03.02.00 FrontcoverEKCO.A1 1
4 01636 EKCO.A1-03.01.00 BasehousingEKCO.A1 1
5 01641 EKCO.A1-02.00.00 ControlpanelEKCO.A1 1 A3
6 01640 EKCO.A1-00.01.00 InteriorbracketEKCO.A1 1
7 01196 WE-020 Returntemperaturesensor 1 Tin,T1
8 01393 01.151.0009.0 ContactorRIK25-40/230VEKCO.A 1 RIK
9 01394 WT3a-00.00.00/06 WT-3safetycut-outEKCO.A 1 F1
10 01638 PCA-MSK.71 BoardMSK-71EKCO.A1 1 A2
11 01389 EKCO.A-10.00.00 PowerboardEKCO.A 1 A1
12 00791 WE-005/02 Flowtemperaturesensor 1 Tout,T2
13 01639 WE-030 Watersensor 1 SPW
14 01637 WP-146 KnobWP-146 1
15 Wireclamping 1
16 WM-172 Earthconnector 1
17 MARCOPOL ScrewTW4.1x20PZ 2
18 MARCOPOL ScrewTW3.6x9TX 3
19 MARCOPOL ScrewTW3,6x16TX 2
20 ScrewTW3,6x13TX 2
21 MARCOPOL Self-formingscrewFWWM3x6TX 2
22 PN-86/M-82202 ScrewM4x8 2 Frontcovermount
23 01.232.0007.0 ElementLCBS-7-01 2 MSK-71mount
24 ADSYS ElementR912-7 2
25 ScrewM4x6 3 Powerboardmount
26 Terminalstrip4E25PA/GVVO 1 XP
PARTS LIST TABLE


Unit 40, Block 5
Third Road
Blantyre Industrial Estate
Blantyre
Glasgow
G72 0UP
Tel: [phone] Fax: [phone]
www.electric-heatingcompany.co.uk
www.ehc-renewables.co.uk