A.O. Smith TWI 45-190 Symptom Cause Solution Remark Gas smell, Water leakage, Explosive ignition

Page 46

9.2

Troubleshooting table for general errors

 

 

 

 

 

 

 

 

 

 

 

 

 

Warning

 

 

 

 

 

 

 

 

Maintenance shall only be carried out by a service and maintenance engineer.

 

 

 

 

 

 

 

 

 

 

 

General errors

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Symptom

Cause

 

Solution

 

Remark

 

 

 

 

 

 

 

 

Gas smell

Gas leakage

 

Warning

 

Warning

 

 

 

 

Immediately close the mains gas supply valve.

 

Immediately contact the installation engineer or the local gas

 

 

 

 

 

 

 

company.

 

 

 

 

Warning

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Do not operate any switches.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Warning

 

 

 

 

 

 

 

No open fire!

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Warning

 

 

 

 

 

 

 

Ventilate the area the device has been installed in.

 

 

 

 

 

 

 

 

 

 

 

Water leakage

Leaking water con-

 

Tighten the threaded connection.

 

Contact the installation engineer if the leakage has not been

 

 

nection (thread)

 

 

 

 

remedied.

 

 

 

 

 

 

 

 

 

 

 

Leakage of conden-

 

Check if condensate is discharged. Restore this if necessary.

 

 

 

 

 

sate

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Leakage from

 

Find the leakage.

 

 

 

 

 

another water device

 

 

 

 

 

 

 

 

or pipe nearby

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Leakage of the tank

 

Consult the supplier and/or the manufacturer.

 

 

 

 

 

of the device

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Explosive ignition

Incorrectly set

 

Set the correct CO2-value(3.11 “Check and adjust the CO2-value”)

 

Contact the installation engineer if the ignition has not improved.

 

 

CO2-value

 

 

 

 

 

 

 

 

Contaminated burner

 

Clean the burner (10.4.2 “Clean the burner”).

 

 

 

 

 

 

 

 

 

 

 

 

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

44

Image 46
Contents 35-130 45-190 Your installer Page Page Copyright 2007 A.O. Smith Water Products Company Page Maintenance InstallationErrors 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 Gas control Security of the water temperatureAir pressure switch 4 FanVented installation Unvented installation3 T&P valve Installation PackagingInstallation Working area Dimensions of the device Dimension Description TWIDimension Description TWI Description Unit TWIVented Circulation piping Cold water sideHot water side Condensation drainageAir supply and flue gas discharge Introduction Requirements for flue gas discharge materialDevice types Device Diameter Maximum length Maximum num Ber of 90 bends Device types DescriptionConcentric connections Practical example of concentric flue gas discharge ExampleSpecifications Subject DescriptionBend Parallel connectionsDevice Diameter Maximum running length 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 For a short time Shut downIntroduction You can 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 11.2 Warranty tank Warranty certificate11.1 Warranty general 11.3 Conditions11.7 Obligations Warranty certificate11.6 Claims SmithAnnex Electrical circuit diagram AnnexWiring Annex Index ConnectUser Warranty IndexPage 0308 489 R1.0

TWI 35-130, TWI 45-190 specifications

A.O. Smith TWI 35-130 and TWI 45-190 are high-efficiency water heaters designed to meet the diverse needs of residential and commercial applications. These units are part of A.O. Smith’s extensive product line, known for reliability, durability, and energy efficiency.

The TWI 35-130 model is a 35-gallon tank water heater, offering a first-hour delivery of 130 gallons. This capacity makes it suitable for households with moderate hot water demands. It features a compact design, allowing for easy installation in tighter spaces, which is ideal for urban settings. The unit operates on natural gas, promoting energy efficiency while reducing operational costs.

One of its main attributes is the advanced insulation technology that minimizes heat loss, thus enhancing overall energy efficiency. The TWI 35-130 is equipped with a state-of-the-art burner system that optimizes combustion for higher efficiency, translating to lower energy bills. Furthermore, it utilizes a dip tube that helps in delivering hot water promptly, ensuring that the demand for hot water is met swiftly.

On the other hand, the TWI 45-190 model caters to larger households or commercial settings with a 45-gallon capacity and a first-hour delivery of 190 gallons. This model also uses natural gas, but with a higher BTU rating, allowing for faster recovery rates, which is crucial during peak usage times.

Both models are designed with user-friendliness in mind, featuring intuitive controls that facilitate easy temperature adjustments and monitoring. Additionally, they incorporate safety features such as a temperature and pressure relief valve to prevent overheating and excessive pressure build-up, ensuring peace of mind for users.

Their innovative design also emphasizes longevity, with high-grade materials and protective coatings that resist corrosion and extend the lifespan of the tank. The TWI series stands out in the market not only for its performance and efficiency but also for its commitment to sustainability.

In summary, A.O. Smith's TWI 35-130 and TWI 45-190 water heaters bring together cutting-edge technology, efficiency, and reliability, making them excellent choices for both residential and commercial applications. With features designed to promote energy savings and user convenience, these models are poised to meet the hot water demands of modern life while adhering to high standards of safety and durability.