HTP EFTC-140F Manuale utente

Service Manual

EFTC-140F Hot Water Combination Boiler

Advanced Heating

& Hot Water Systems

120 Braley Road, East Freetown, MA 02717 •1-800-323-9651 •www.htproducts.com

LP-528 REV. 8.01.14

EFTC-140F Hot water combination boiler

Service Manual

EFTC-140F

(Hot Water Combination Boiler)

•NaturalGas(NG)– Factory Default

•LiquidPropaneGas(LP)–Field-Convertible

(Refertothegasconversionmanual.)

Model

WARNING

–Donotstoreorusegasolineorother󰘱ammablevaporsandliquidsinthevicinityofthisoranyotherappliance.

–WHATTODOIFYOUSMELLGAS

 ·Donottrytolightanyappliance.

 ·Donottouchanyelectricalswitch;donotuseanyphoneinyourbuilding.

 ·Immediatelycallyourgassupplierfromaneighbor’sphone.Followthegassupplier’sinstructions.

 ·Ifyoucannotreachyourgassupplier,callthe󰘰redepartment.

–Installationandservicemustbeperformedbyaquali󰘰edinstaller,serviceagencyorthegassupplier.

Iftheinformationintheseinstructionsisnotfollowedexactly,a󰘰reorexplosionmayresult,

causingpropertydamage,personalinjury,ordeath.

Heat Exchanger bears the ASME “H” Stamp

LP-528 REV. 8.01.14

Chapter1ProductCharacteristics Speci󰘰cations 6

Dimensions 7

ComponentsDescription 8

Flow chart 9

Time chart 10

Operation󰘱owchart 11

Wiringdiagram 13

Connector function 15

Chapter2Componentsdescription MainControlBoard 17

Temperaturesensors 18

Burner Overheat Switch 19

Waterleveldetectionsensor 20

Detectionsensor 21

Jumpedwireconnection 22

AirPressureswitch 23

CondensateBlockageAPS 24

Flowsensor 25

Ignitiontransformer 26

FlameDetectionSensor 27

Gasvalve 28

BLDCFan 29

Burnerassembly 30

FireTubeHeatexchanger 31

Condensatetrap 32

InternalDHWstoragetank 33

InternalCH/DHWcirculationpumps 34

DHWMixingValve 35

Chapter3Howtousecontrolpanel Functionexplanation 36

Contolpanel 37

LCDSpeci󰘰cation 38

ControlPanelMode 38

DHWTemperatureControl 41

CHSupplywatertemperaturecontrol 42

LP-528 REV. 8.01.14

Outdoortemperaturedisplay 42

Water󰘱owrate(GPMorLPM) 43

CHReturnwatertemperature 43

FanSpeed(RPM) 44

ProgramLockmode 44

CHSupplywatertemperature 45

DHWOutletWaterTemperature 45

ExhaustGasTemperature 46

Internalstoragetankwatertemperature 46

Overheattemperaturesensor 47

Viewsupplypowertime 47

ViewBurnerOperatingTime(Unit:1hr) 48

ViewBurnerOperatingTime(X1000hr) 48

ViewIgnitioncycles(X10times) 49

ViewIgnitioncycles(X10,000times) 49

PumpConditionDisplay 50

FaultCodeHistory 51

ClearErrorCodeHistory 51

SystemReset 52

ChangeDHWFlowRateMeasurementUnit 52

InternalStoragetankPreheatingMode 53

Changemaximumoutdoortemperature 53

Changeminimumoutdoortemperature 54

Fan,MaxRPMAdjustment 54

Fan,MinRPMAdjustment 55

ResetBurnerOperatingTime 55

DeleteIgnitingCycles 56

BoostFunction 56

CH anti-cycling time 57

BurnerONtemperature 57

LP-528 REV. 8.01.14

Warmweathershutdown 58

MaximumCHsupplytemperature 58

MinimumCHsupplytemperature 59

MaximumDHWSetTemperature 59

CHCapacity 60

DHWHeatingCapacity 60

InternalCHprimarypumppostruntime 61

InternalCHpumpoverruntimer(ON) 61

InternalCHpumpoverruntimer(OFF) 62

InternalDHWStorageTankSetPoint 62

InternalDHWStorageTankDi󰘯erential 63

DelayTime(fromDHWtoCHMode) 63

InternalCHPumpPostPurgeTimer 64

InternalCH&DHWPumpsTestMode 64

Chapter4Troubleshooting Flame Detection 65

GasDetection 66

APS/BurnerOverheatSwitch 66

StorageDHW/ExhaustOverheat 67

Errorcode 68

ErrorCode10 71

ErrorCode11 72

ErrorCode16 73

ErrorCode20 74

ErrorCode28 75

ErrorCode29 76

ErrorCode30 77

ErrorCode32 78

ErrorCode33 79

ErrorCode35 80

LP-528 REV. 8.01.14

ErrorCode36 81

ErrorCode37 82

ErrorCode38 83

ErrorCode40 84

ErrorCode41 85

ErrorCode42 86

ErrorCode43 87

ErrorCode61 88

ErrorCode66 89

ErrorCode68 90

ErrorCode72 91

ErrorCode76 92

ErrorCode80 93

ErrorCode81 94

ErrorCode85 96

ErrorCode94 96

Chapter5 Replacementinstructions BlowAssembly 97

GasValve 98

FlowSensor 99

ElectronicMixingValve 99

APS(AirPressureSwitch) 100

InterPrimaryCHCirculationPump 100

InternalDHWStorageTank 101

FlameDetectionSensor 101

Main Controller 102

IgnitionTransformer 103

Chapter6 Componentsdiagram RepairPartsDiagram 104

Memo 108

LP-528 REV. 8.01.14

ModelName EFTC-140F

GasInputRate MAX 140,000Btu/h

MIN 28,000Btu/h

AFUE 93.2%

HotWaterCapacity

35°FRise 7.1Gal

45°FRise 5.5Gal

77°FRise 3.2Gal

Installation Indoor/Floorstandtype

FlueSystem SealedCombustionDirectVent

VentRun 2″(50ft),3″(100ft)Schedule40PVC,CPVC,PP,SS

Ori󰘰ceSize NG(Ori󰘰ce/Needle) 0.232″(5.9mm)

LP(Ori󰘰ce/Needle) 0.185″(4.7mm)

GasSupplyPressure NG 3.5″WCto14″WC

LP 3.5″WCto14″WC

ManifoldPressure LowFire 2″/3"VENT NG:-0.0039″WC/-0.002″WC

High Fire 2"/3″VENT NG:-0.374″WC/-0.216″WC

PowerSupply

MainSupply 120V60Hz/6A

Maximum

PowerConsumption 160W

IgnitionSystem DirectElectronicIgnition/AutomaticFlameSensing

BurnerSystem SingleOri󰘰cePremixedFuelModulationMetalFiberInfrared

GasValveSystem Air ratio valve

Minimum Flow Rate 0.5GPM

InternalPipeMaterial Copper

Dimensions W15.7″-H53.0″–D26.8″

ShippingWeight 250lbs.

InternalStorageTankWaterCapacity 11Gallon

BoilerHeatExchangerCapacity 4Gallons

TotalWaterCapacity 15Gallons

MainController/ControlPanel GTX-920C/P-920C_CB-HTP

CHPressure Min15~Max30PSI

DHWPressure Max150PSI

ConnectionSizes

DHWInlet/

Hot Water Outlet 3/4″NPT

CHSupply/Return 1″NPT

GasInlet 1/2″NPT(1/2x3/4BellCouplingProvidedtoUpsizeGasLine)

Materials

Cabinet ColdRolledCarbonSteel

HeatExchanger PrimaryHeatExchanger:StainlessSteel

SubHeatExchanger:StainlessSteel

SafetyDevices

FlameRod,OverheatCutO󰘯Device,GasValveOperationDetector,

ExhaustTemperatureHighLimitSensor,WaterTemperatureHighLimit

Sensor

Chapter1ProductCharacteristics

■Speci󰘰cation

LP-528 REV. 8.01.14

Description Diameter

AGasConnectionAdapter 1/2″NPT(1/2x3/4BellCouplingProvidedtoUpsizeGasLine)

B‘CHsupply’Adapter 1″

C‘CHreturn’Adapter 1″

D‘DHWoutlet’Adapter 3/4″

E‘DHWinlet’Adapter 3/4″

FCondensateAdapter 1/2″

G DrainAdapter 1/2″

ExhaustVentConnection

3″

I IntakePipeConnection 3″

■Dimensions

Chapter1ProductCharacteristics

LP-528 REV. 8.01.14

NO NameofComponent

ExhaustOutletCollar

MainPCBBracket

BLDCFAN

AutomaticAirVent

FlameDetectionSensor

MainPCB

ExhaustGasPipe

Manual Switch

PowerPort

CHCirculationPump

AirPressureSensor

Tilt Switch

SubHeatExchangerAssembly

InternalCirculationPump

WaterDischargePipe&Connector

CondensateOutletConnector

CondensateCollector

DHWInletConnector

NO NameofComponent

WaterMixingvalve

WaterFillValve

DHW Outlet Connector

CH Return Connector

CHSupplyConnector

MainHeatingExchangerAssembly

Con󰘰rmationWindowFlame

GasInletConnector

IgnitionTrans

Igniter

GasValve

AirPressureSensor

AirIntakePipe

AirIntakeCollar

■ComponentsDescription

K1-14CCB K1-19CCB

Chapter1ProductCharacteristics

LP-528 REV. 8.01.14

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