A.O. Smith TWI 35-130, TWI 45-190 service manual Copyright 2007 A.O. Smith Water Products Company

Page 5

Carefully read this manual

Trade marks

Liability

Additional information

Warning

Carefully read this manual before starting up the device.

Not reading this manual and not following the instructions in this manual may lead to personal injuries and damage to the device.

Copyright © 2007 A.O. Smith Water Products Company

All rights reserved.

Nothing from this edition may be copied, reproduced and/or made public by means of press, photocopying or in any other way without prior permission in writing from A.O. Smith Water Products Company.

A.O. Smith Water Products Company reserves the right to change the specifications as mentioned in this manual.

All brand names mentioned in this manual are registered trademarks of the respective suppliers.

A.O. Smith Water Products Company does not accept any liability for claims of third parties as a result of incompetent use other than mentioned in this manual and in conformity with the General Terms and Conditions as filed with the Chamber of Commerce.

For further information see the General Terms and Conditions. These are obtainable from us free of charge.

Although utmost care has been taken in ensuring a correct and, where necessary, complete description of the relevant parts, the manual may contain faults and obscurities.

Should you still discover faults or obscurities, please inform us about this. It helps us to further improve the documentation.

If you have any remarks or questions concerning specific subjects related to the device, please do not hesitate to contact. A.O. Smith Water Products Company P.O. Box 70

5500 AB Veldhoven The Netherlands

Telephone (free):

0800 - AOSMITH

 

0800 - 267 64 84

General:

+31 40 294 25 00

Fax:

+31 40 294 25 39

E-mail:

info@aosmith.nl

Website:

www.aosmithinternational.com

For problems with respect to connections to gas, electricity and water supplies, please contact the supplier/installation engineer of your installation.

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

3

Image 5
Contents 35-130 45-190 Your installer Page Page Copyright 2007 A.O. Smith Water Products Company Page Errors InstallationMaintenance Operation of the deviceWarranty certificate Table of contentAbout the device What to do when you smell gas RegulationsIntroduction Target groups IntroductionChapter Target groups Description InstallationThis chapter contains the terms of warranty Warranty certificateIntroduction This chapter will cover in the given order Operation of the deviceSecurity of the device Introduction Operation of the deviceHeating cycle Air pressure switch Security of the water temperatureGas control 4 Fan3 T&P valve Unvented installationVented installation Packaging InstallationInstallation Working area Dimension Description TWI Dimensions of the deviceDescription Unit TWI Dimension Description TWIVented Hot water side Cold water sideCirculation piping Condensation drainageRequirements for flue gas discharge material Air supply and flue gas discharge IntroductionDevice types Concentric connections Device types DescriptionDevice Diameter Maximum length Maximum num Ber of 90 bends Practical example of concentric flue gas discharge ExampleSubject Description SpecificationsDevice Diameter Maximum running length Parallel connectionsBend Practical example of parallel flue gas discharge ExampleDevice with parallel flue gas discharge material Preparation Electrical connectionConnector block Isolating transformer Check and adjust the CO2-value Connect the mains voltageGas control Checking procedureAdjust the CO2-value Conversion to another gas category Conversion to another gas category Unvented FillFill vented installations Fill the device Fill unvented installationsDrain Drain vented InstallationsDrain unvented Start up Opening the gas valve 3.5 Connections diagramStart up Introduction You can Shut downFor a short time Electrically isolateShut down Errors visible on the control ErrorsIntroduction Distinction is made between General errors Explosive ignition Symptom Cause Solution Remark Gas smellWater leakage Hot water Symptom Cause Solution Remark Insufficient or noLight pulses Cause Solution Remark Troubleshooting table for errors visible on the controlSee 12.2 Electrical circuit diagram Light pulses Cause Solution Remark SL3TWI Introduction Prepare maintenance MaintenanceMaintenance 11.1 Warranty general Warranty certificate11.2 Warranty tank 11.3 Conditions11.6 Claims Warranty certificate11.7 Obligations SmithAnnex Annex Electrical circuit diagramWiring Annex Connect IndexIndex User WarrantyPage 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.