Manuals / A.O. Smith / Household Appliance / Water Heater

A.O. Smith TWI 35-130 Operation of the device, Introduction, General operation of the device

Models: TWI 35-130 TWI 45-190

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2Operation of the device

2.1	Introduction	This chapter will cover in the given order:
		• General operation of the device;
		• Heating cycle of the device;
		• Security of the device;
		• Safety of the installation.
2.2	General operation	The ﬁgure shows a cross section of the device.
	of the device

Cross section of the device

Legends IMD-0527

1. Temperature sensor / ECO

2.Insulating layer

3.Air pressure switch

4.Burner

5. Venturi

6. Air supply pipe

7. Gas control

8. Cover plate

9. Hot surface igniter

10. Fan

11. Thermostat

12. Hot water outlet

13. Heat exchanger

14. Tank

15. Combustion chamber

16. Cold water inlet

17. Concentric measuring tube

18. Air supply hose

19. Flue gas discharge

20. Siphon

21. Transformer 230 VAC-120 VAC

22. Drain valve

23. Connector

24. Transformer 120 VAC-24 VAC

25. Electronic control

26. Thermostat board

27. Inspection window

IMD-0527 RO

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

Page 13

Image 13

A.O. Smith TWI 35-130 Operation of the device, Introduction, This chapter will cover in the given order, General operation

Contents

35-130 45-190 Installation User and Service ManualWATER PRODUCTS COMPANY A DIVISION OF A. O. SMITH CORPORATIONyour installer Instruction manual TWI 35-130 G/TWI 45-190 G Instruction manual TWI 35-130 G/TWI 45-190 G Additional information Carefully read this manual Trade marks LiabilityCopyright 2007 A.O. Smith Water Products Company Instruction manual TWI 35-130 G/TWI 45-190 GInstruction manual TWI 35-130 G/TWI 45-190 G Errors InstallationMaintenance Operation of the deviceWarranty certiﬁcate Table of contentAnnex Index1 Introduction 1.2 What to do when you smell gas 1.3 Regulations1.1 About the device 0063Symbols per target group 1.5 MaintenanceSymbol IntroductionInstallation The table provides an overview of the content of this documentErrors 10. MaintenanceThis chapter contains the terms of warranty 11. Warranty certiﬁcate1 Introduction 12. Annexes2 Operation of the device Safety of the installationIntroduction This chapter will cover in the given orderthe Air pressure switch the Ionisation detection the Security of the water temperature the Gas controlOperation of the device Heating cycle of2.4.5 Air pressure switch 2.4.2 Security of the water temperature2.4.3 Gas control 2.4.4 Fan2.5.2 Vented installation 2.5.1 Unvented installation2.5.3 T&P valve Operation of the deviceConnections diagram 3 InstallationCheck and adjust the CO2-value Packaging3.3.1 Air humidity and ambient temperature 3 InstallationAir humidity and ambient temperature Weight of the device ﬁlled with waterRemark Instruction manual TWI 35-130 G/TWI 45-190 GWorking area IMD-0528 R03 Installation 3.4.1 Dimensions of the deviceInstruction manual TWI 35-130 G/TWI 45-190 G See the tableInstruction manual TWI 35-130 G/TWI 45-190 G DimensionDescription 3.4.2The ﬁgure shows the connections diagram. This diagram is used in the Connections diagramsections describing the actual connecting activities 3 Installationunvented Water connections3.6.1 Cold water side 3.6.2 Hot water side3.7.4 Condensation drainage 3.7.3 Circulation piping3.9 Air supply and ﬂue gas discharge 3.9.1 Introduction 3.9.2 Requirements for ﬂue gas discharge materialDevice types Instruction manual TWI 35-130 G/TWI 45-190 GIMD-0531 R0 Device types Explanation of device types3.9.3 Concentric connectionsSpeciﬁcations Device with concentric ﬂue gas discharge materialSubject Instruction manual TWI 35-130 G/TWI 45-190 G3.9.4 Parallel connections Speciﬁcation of concentric roof ﬂue terminal C33Maximum running length 90 bend4.6 x 8 + 25 = 36.8 + 25 = 61.8 m Instruction manual TWI 35-130 G/TWI 45-190 G1.3 “Regulations” 3.10 Electrical connection3.10.1 Introduction 3.10.2 PreparationInstruction manual TWI 35-130 G/TWI 45-190 G A. screws B. cover plate C. connector block D. strain reliefRemark 3.10.3 Connect the mains voltage 3.11 Check and adjust the CO2-value3.10.4 Isolating transformer 3 InstallationInstruction manual TWI 35-130 G/TWI 45-190 G 3.11.1 Checking procedure3 Installation 3.11.2 Adjust the CO2-value1. Remove the cap 3 from the CO2 setting screw Instruction manual TWI 35-130 G/TWI 45-190 GConversion to another gas category is not possible 4 Conversion to another gas categoryInstruction manual TWI 35-130 G/TWI 45-190 G Conversion to another gas category Instruction manual TWI 35-130 G/TWI 45-190 GInstruction manual TWI 35-130 G/TWI 45-190 G 5 Fill5.1.2 Fill vented installations 5.1 Fill the device 5.1.1 Fill unvented installations5 Fill Instruction manual TWI 35-130 G/TWI 45-190 GInstruction manual TWI 35-130 G/TWI 45-190 G 6 Drain6 Drain installationsDrain unvented Drain vented7 Start up Opening the gas valve 3.5 “Connections diagram”Heating cycle of the device Heating cycle of theInstruction manual TWI 35-130 G/TWI 45-190 G Start upYou can 8 Shut downShut down the device for a short time Electrically isolate the device Shut down the device for a long periodInstruction manual TWI 35-130 G/TWI 45-190 G Shut downGeneral errors 9 ErrorsErrors visible on the control A distinction is made betweenSymptom Troubleshooting table for general errorsSolution Clean the burner 10.4.2 “Clean the burner”Insufﬁcient or no Instruction manual - TWI 35-130 G/TWI 45-190 Ghot water SymptomLight pulses 9.3 Troubleshooting table for errors visible on the control1 SC 2 SC3 SL3 See 12.2 “Electrical circuit diagram”Solution See 12.2 “Electrical circuit diagram”Instruction manual - TWI 35-130 G/TWI 45-190 G SolutionLight pulses Cause10.1 Introduction 10.2 Prepare maintenance 10 MaintenanceInstruction manual TWI 35-130 G/TWI 45-190 G Remark10.3 Water-side maintenance 10.3.1 Descale 10 Maintenance10.3.2 Clean the condensation drainage maintenanceWarranty general 11 Warranty certiﬁcateWarranty tank of installationThe warranty referred to in Articles 1 and 2 does not apply Warranty certiﬁcate11.4 Exclusions 3.3.3 Water composition”12.1 Introduction 12 AnnexInstruction manual TWI 35-130 G/TWI 45-190 G 12 Annex 12.2 Electrical circuit diagramInstruction manual TWI 35-130 G/TWI 45-190 G IMD 0380 429 R012.3 Legends WIRINGCLAMPING STRIP CONNECTIONS COMPONENTSInstruction manual TWI 35-130 G/TWI 45-190 G 12 Annexconnect IndexInstruction manual TWI 35-130 G/TWI 45-190 G Index U user W warrantyInstruction manual TWI 35-130 G/TWI 45-190 G Instruction manual TWI 35-130 G/TWI 45-190 G Instruction manual TWI 35-130 G/TWI 45-190 G 0308 489 R1.0

2Operation of the device

Introduction

This chapter will cover in the given order:

• General operation of the device;

• Heating cycle of the device;

• Security of the device;

• Safety of the installation.

General operation

The ﬁgure shows a cross section of the device.

of the device