A.O. Smith TWI 45-190, TWI 35-130 service manual

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2	Instruction manual TWI 35-130 G/TWI 45-190 G

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Contents 35-130 45-190 Your installer Page Page Copyright 2007 A.O. Smith Water Products Company Page Installation ErrorsMaintenance Operation of the deviceTable of content Warranty certiﬁcateIntroduction What to do when you smell gas RegulationsAbout the device Introduction Target groupsInstallation Chapter Target groups DescriptionWarranty certiﬁcate This chapter contains the terms of warrantyOperation of the device Introduction This chapter will cover in the given orderHeating cycle Operation of the deviceSecurity of the device Introduction Security of the water temperature Air pressure switchGas control 4 FanVented installation Unvented installation3 T&P valve Installation PackagingInstallation Working area Dimensions of the device Dimension Description TWIDimension Description TWI Description Unit TWIVented Cold water side Hot water sideCirculation piping Condensation drainageAir supply and ﬂue gas discharge Introduction Requirements for ﬂue gas discharge materialDevice types Device types Description Concentric connectionsDevice Diameter Maximum length Maximum num Ber of 90 bends Practical example of concentric ﬂue gas discharge ExampleSpeciﬁcations Subject DescriptionParallel connections Device Diameter Maximum running lengthBend Practical example of parallel ﬂue gas discharge ExampleDevice with parallel ﬂue gas discharge material Electrical connection PreparationConnector block Check and adjust the CO2-value Connect the mains voltage Isolating transformerChecking procedure Gas controlAdjust the CO2-value Conversion to another gas category Conversion to another gas category Fill UnventedFill the device Fill unvented installations Fill vented installationsDrain Drain unvented InstallationsDrain vented Opening the gas valve 3.5 Connections diagram Start upStart up Shut down Introduction You canFor a short time Electrically isolateShut down Introduction Distinction is made between General errors ErrorsErrors visible on the control Water leakage Symptom Cause Solution Remark Gas smellExplosive ignition Symptom Cause Solution Remark Insufﬁcient or no Hot waterTroubleshooting table for errors visible on the control Light pulses Cause Solution RemarkLight pulses Cause Solution Remark SL3 See 12.2 Electrical circuit diagramTWI Maintenance Introduction Prepare maintenanceMaintenance Warranty certiﬁcate 11.1 Warranty general11.2 Warranty tank 11.3 ConditionsWarranty certiﬁcate 11.6 Claims11.7 Obligations SmithAnnex Electrical circuit diagram AnnexWiring Annex Index ConnectUser Warranty IndexPage 0308 489 R1.0