HTP EFTC-140F User manual

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
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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
DHWTemperatureControl 41
CHSupplywatertemperaturecontrol 42
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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
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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
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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
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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
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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″
H ExhaustVentConnection 3″
I IntakePipeConnection 3″
■Dimensions
Chapter1ProductCharacteristics
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NO NameofComponent
1 ExhaustOutletCollar
2 MainPCBBracket
3 BLDCFAN
4 AutomaticAirVent
5 FlameDetectionSensor
6 MainPCB
7 ExhaustGasPipe
8 Manual Switch
9 PowerPort
10 CHCirculationPump
11 AirPressureSensor
12 Tilt Switch
13 SubHeatExchangerAssembly
14 InternalCirculationPump
15 WaterDischargePipe&Connector
16 CondensateOutletConnector
17 CondensateCollector
18 DHWInletConnector
NO NameofComponent
19 WaterMixingvalve
20 WaterFillValve
21 DHW Outlet Connector
22 CH Return Connector
23 CHSupplyConnector
24 MainHeatingExchangerAssembly
25 Con󰘰rmationWindowFlame
26 GasInletConnector
27 IgnitionTrans
28 Igniter
29 GasValve
30 AirPressureSensor
31 AirIntakePipe
32 AirIntakeCollar
■ComponentsDescription
K1-14CCB K1-19CCB
Chapter1ProductCharacteristics
LP-528 REV. 8.01.14