Thermann 26NG50C Manual de usuario
GAS CONTINUOUS FLOW
WATER HEATERS
(Residential Outdoor Unit)
TO BE USED BY A LICENSED
PLUMBER ONLY
SERVICE MANUAL
Model:26NG50C/26LP50C
26NG60C/26LP60C
- 3 -
Table of Contents
1. General Outline of Appliance
1 - 1 Specications .............................................................................................................................. 3
1 - 2 Performance................................................................................................................................ 4
1 - 3 GeneralConstruction(PartsNames) .......................................................................................... 5
1 - 4 MainComponentStructures ....................................................................................................... 6
1 - 5 MainSafetyDevices ................................................................................................................... 8
2. Installation and Related Work
2 - 1 InstallationInstructions................................................................................................................ 9
2 - 2 Dimensions ................................................................................................................................. 13
2 - 3 GasPiping................................................................................................................................... 14
2 - 4 WaterPiping................................................................................................................................ 14
2 - 5 CondensateDrainPiping ............................................................................................................ 15
2 - 6 ElectricalConnection .................................................................................................................. 17
2 - 7 WiringRemoteController............................................................................................................ 18
2 - 8 TestingOperation ........................................................................................................................ 20
2 - 9 CascadeInstallation.................................................................................................................... 21
3. Service and Maintenance
3 - 1 OperationPrinciples.................................................................................................................... 22
3 - 2 SchematicDiagram..................................................................................................................... 24
3 - 3 FlowCharts ................................................................................................................................. 25
3 - 4 FaultFindingsandErrorCode .................................................................................................... 26
3 - 5 ReplacementofPCB................................................................................................................... 29
3 - 6 ReplacementofNeutralizer......................................................................................................... 30
3 - 7 WiringDiagram ........................................................................................................................... 31
3 - 8 CascadeFlowCharts.................................................................................................................. 32
3 - 9 ManifoldGasSettingProcedure ................................................................................................. 33
3 - 10CombustionSpecication,VariousCombinationSetting ............................................................ 34
3 - 11 Disassembling/AssemblingParts................................................................................................ 38
3 - 12ExplodedView ............................................................................................................................ 46
3- 13PartsList ..................................................................................................................................... 47
- 3 -
1-1 Specications
MODEL 26
Nominalhourlygasconsumptionby
proportionalelectronicgascontrol MJ/h 173
Minimumgassupplypressure(NaturalGas) kPa 1.13
Maximumgassupplypressure(NaturalGas) kPa 5.0
Minimumgassupplypressure(Propane) kPa 2.75
Maximumgassupplypressure(Propane) kPa 7.0
TestpointpressureHigh(NaturalGas) kPa 0.84
TestpointpressureLow(NaturalGas) kPa 0.16
TestpointpressureHigh(Propane) kPa 1.27
TestpointpressureLow(Propane) kPa 0.21
Waterheatingcapacityraised40°C L/min 16.25
Minimumworkingpressure kPa 115
Maximumworkingpressure kPa 1200
Gasinjectorsdiameter(NaturalGas) mm 1.00/1.50
Gasinjectorsdiameter(Propane) mm 0.7/1.0
Inputvoltagesinglephase50Hz V240
Maximumoutputcurrent A0.66
Inletgasconnectionmalethread R3/4”(20mm)
Coldwaterconnectionmalethread R3/4”(20mm)
Hotwaterconnectionmalethread R3/4”(20mm)
Reliefvalvepressuresetting kPa 1400
Weightdry kg 20.5
Dimensions(DxWxH) mm 205x366x573
IAPMOApprovalcerticateno.GMK10408.WatermarkCerticateofcomplianceWM-000506
1. General Outline of Appliance
- 4 - - 5 -
1-2 Performance
Performance-Capacitycharacteristiccurves.
Inlet water temperature
5C
15 C
25 C
Water flow rate [L/min]
37
0
5
2.2(Minimum)
22.0(Maximum)
10
15
20
25
7550 60
Outlet water temperature [
C]
- 4 - - 5 -
1-3 GeneralConstruction(PartsNames)
No. PARTS NAME
1PCB(Natural Gas)
PCB(Propane)
2ManifoldAssy(NaturalGas)
ManifoldAssy(Propane)
3GasControlValve
4Electrode
5FlameRod
6HeatExchangerAssy
aPrimaryHeatExchangerAssy
b SecondaryHeatExchangerAssy
7OverHeatThermostat
No. PARTS NAME
8 Fan Motor
9TemperatureSensor
10 Anti-Frost Heaters
11 Ignitor
12 PressureReliefValve
13 WaterFlowControlValve(withSensor)
14 Water Filter
15 AmbientTemperatureSensor
16 NeutralizerAssy
c Neutralizer
dAnti-FrostHeaterforNeutralizer
a
7
10
5
4
10
b
6
14d 10
11
1
15
2
10 12 13
c
8
9
9 3
- 6 - - 7 -
1-4 MainComponentStructures
1. GasControlValve
•Feedsthenecessaryamountofgastoheatwatertoasettemperature,basedonthe
amountofwaterowinginthroughtheinletmeasuredbytheWaterFlowSensorand
thewatertemperaturecalculation.
UP34-47R
LP/NG
4D00001
11DC0697
0
1
2
OUT2OUT1
Main Gas Valve
Gas Valve 1
Filter
Gas Control Valve
Gas Valve 1
(No.1)
Main Gas Valve
(No.0)
Gas Valve 2
(No.2)
IN
2. WaterFlowControlValvewithSensor
*Measuresthewaterowasitsrotor(bladedwheel)spinswiththepassingwater.
Therotationoftherotorisdetectedbythesensorrotor(bladeequippedwitha
magnet)ofthewheelandtheHallelementwhichcalculatesthewaterquantity.
*Whenwaterowsmorethanwaterheatercapacity,hotwatertemperaturebecomes
lowerthanthesetting.TheWaterFlowControlValveautomaticallyreducesthe
waterowtopreventsuchtemperaturedrops.
Inlet
Main Body
Water Flow Sensor
Hall Element IC
Sealant
Valve Body
Water Flow
Control Valve
Rotor
- 6 - - 7 -
Gas
Gas Valve 2
Gas Valve 1
Electrode
2burners 5burners 10burners
Flame Sensor
Gas Control
Valve
Main Gas Valve
Gas Valve 3
Fan Motor
3. CombustionControlofRichandLeanBurners
1) Ignitionstart
AftertheMainGasValve,GasValve1,GasValve2openrespectivelyasrequired,
theGasControlValve,beingheldattheslowignitionposition(withgassupplyata
constantrate),operatestoigniteBurners.
2) Duringcombustion
Dependingontherequiredheatingcapacity,eachGasValveopensorcloses.
The combinations are below,
Gas valve 1&2&3 open
1&2
2
1
Higher
Lower
- 8 - - 9 -
1-5 Main Safety Devices
1. WaterFlowSensor(Boil-dryprotection)
WhentheWaterFlowSensordetectstheowrateissetforstartingignition(ignition
waterow)orhigher,thewaterheaterstartsoperation.
Ignitionwaterow:2.7L/min.
Extinctionwaterow:2.2L/min.
2. FlameSensor(Flamefailuredetection)
Electricsignalsaretransmittedtotheamedetectioncircuittoconrmthenormal
combustionwhentheFlameSensordetectstherecticationofnormalcombustion
ame.Therefore,ifthecombustionoftheBurnersisnotnormal,thesignalsarenot
sentviatheFlameSensor.Thegascontrolassembliesareclosedwithoutthesignals
andtheerrorcode"111"or"121"isdisplayedontheremotecontrollers.
3. ThermalFuse(Over-temperatureprotectionsystem)
TheThermalFuseisplacedaroundthePrimaryHeatExchangerAssembly.Ifthe
ambienttemperatureinsidethewaterheaterbecomesextremelyhigh,thefusewill
meltdowntobreakthepowercircuit.Insuchacase,asnopowerissuppliedtothe
gascontrolassemblies,thegassupplyisstoppedandthecombustionisstopped.
(Thesystemisactivatedtoblowthefuseat169°C.)
4. OverHeatThermostat(residual)
EvenifthePrimaryHeatExchangerAssemblyisoverheatedbyno-watercombustion,
everygaspathisclosedtoavoidrisks.Atthistime,theerrorcode"141"isdisplayed
ontheremotecontrollers.
(Theswitchisprovidedwithaauto-restorationfunctionandturnsOFFat100°C.)
5. FanRevolutionDetectionDevice(HallIC)
Thedevicedetectsthefanrevolutionspeedtocontroltheairsupplynecessaryfor
normalcombustion.Ifthefanrevolutionisoutofthepresetstandardrange,thegas
controlassembliesareclosedtostopthecombustionbeforecombustionfailure
occurs.Inthiscase,theerrorcode"611"isdisplayedontheremotecontrollers.
6. FreezeProtectionSystem(Anti-FrostHeaters)
Topreventfreezinginthehotwatersupplycircuit,Anti-FrostHeatersareprovidedat
majorpointsofwaterowpathsintheunit.TheheatersareactivatedbytheAmbient
TemperatureSensorintheunit.
(ThesystemturnsONat3°CandOFFat13°C.)
- 8 - - 9 -
2. Installation and Related Work
2-1 Installation Instructions
•Thecasesshownbelowareclassiedbythedegreeofriskanddamage.
Besuretofollowtheinstructionsforyoursafety.
Eachmarkindicates:
TheWaterHeatermustbeinstalledinaccordancewiththefollowing:
1. Theseinstructions.
2.NationalConstructionCodeandLocalauthorityregulations.
3. AS/NZS3500.4PlumbingandDrainage-HeatedWaterServices.
4. TheAustralianstandardforgasinstallationsAS/NZS5601.
5. Anyotherstatutoryregulationthatmayapply.
6. AnoticeofintentiontoinstallshallbelodgedwiththerelevantlocalGasAuthorityprior
to installation.
INSTALLAION MUST BE CARRIED OUT ONLY BY AN AUTHORISED AND
APPROPRIATE LICENSED PERSON
Installationrequirements
“Danger”indicatesthatseriousinjuriesorevendeathmayresultfrom
theimproperinstallationduetonegligenceoffollowingtheinstructions.
“Warning”indicatesthepossibilitythatseriousinjuriesorevendeath
mayresultfromtheimproperinstallationduetonegligenceoffollowing
theinstructions.
“Caution”indicatesthepossibilitythatsomeinjuriesormaterialdamage
mayresultfromtheimproperinstallationduetonegligenceoffollowing
theinstructions.
Generalprohibited
Neverfailtodo.
Ground
Neverinstalltheunitindoorsasitisexclusivelyforoutdooruse.
Donotinstallitinthebathroom.Electricshockorleakagemayresult.
-10- - 11 -
•Makesuretheunittobeinstalledsuitstheintendeduseandapplication.
•Donotuseanygasotherthanspeciedonthesticker.
•Donotoperatewithanypowersource(voltage/frequency)otherthanspeciedonthe
sticker.
Vericationoftheunit.
Before installation.
Locationoftheunit.
Decidewheretoinstalltheunitbyconsideringcustomer’srequestandclearances.
Ventilation
•Installtheunitwherethereisenoughspaceforventilation.
•Donotinstalltheunitwhereammablessuchasgasoline,benzene,andadhesiveare
handled.
•Thisunitdoesnotallowtheuseofextendedexhaustpipes.
•Installtheunitasfaraspossible,awayfromanythinginfrontoraboveevenifitisnon-
combustibleinordertopreventexhaustgasrecirculation,andstainingofsurfaces.
•Takepreventivemeasuresagainstsnowdriftsforairinletandexhaustoutlettostay
unaffectedincasethereisapossibilitythattheymaybeblockedbysnowfall.
Otros manuales para 26NG50C
2
Este manual sirve para los siguientes modelos
3
Tabla de contenidos
Otros manuales de Calentador de agua de Thermann
Thermann
Thermann 16NG50-6 Manual de usuario
Thermann
Thermann TH50ECR6N Guía del usuario
Thermann
Thermann TH26ENG5N Manual de usuario
Thermann
Thermann 80THMB136 Manual de usuario
Thermann
Thermann G16NG50 Manual de usuario
Thermann
Thermann 250L Guía de solución de problemas
Thermann
Thermann 135THM4N Manual de programación
Thermann
Thermann TH26ENG5L Guía del usuario
Thermann
Thermann 16NG50 Manual de usuario
Thermann
Thermann 25THMS124P Guía del usuario
Thermann
Thermann 80THMB136 Guía del usuario
Thermann
Thermann 26NG50C Guía del usuario
Thermann
Thermann X Hybrid 220 Guía del usuario
Thermann
Thermann 80THM136 Manual de usuario
Thermann
Thermann 16NG50-6 Manual de usuario
Thermann
Thermann 26NG50C Manual de usuario
Thermann
Thermann 16NG50-6 Manual de usuario
Thermann
Thermann TH32END5N Manual de usuario
Thermann
Thermann 16NG50/16LP50 Manual de usuario
Thermann
Thermann 25W124 Guía de solución de problemas
