A.O. Smith TWI 35-130 Light pulses Cause Solution Remark SL3, See 12.2 Electrical circuit diagram

Page 49

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

47

Pannes s’affichant sur la commande

Light pulses

Cause

Solution

Remark

 

 

 

 

 

3 (SL3)

No gas supply

1.

Open the mains gas supply valve and/or the manual gas valve

Contact your installation engineer for restoring the gas supply.

Three ignition

 

 

for the gas control.

 

attempts without

 

2.

Check the pre-pressure on the gas control.

 

success

 

3.

If necessary, restore the gas supply.

 

 

 

 

 

 

Air in the gas pipe

Bleed the gas pipe.

Contact your installation engineer for replacing the required parts.

 

 

 

 

 

 

No gas supply to

1.

Check if the gas valve switches.

 

 

burner

2.

Replace the gas control if necessary.

 

 

 

 

 

 

 

Error in the hot

1.

Check if the hot surface igniter has been properly connected.

Contact the installation engineer in case of reoccurring errors.

 

surface igniter circuit

 

See (12.2 “Electrical circuit diagram”).

Contact the installation engineer for replacing the required parts.

 

 

2.

Check the cabling of the hot surface igniter.

 

 

 

3.

Check the voltage over the hot surface igniter. This should be

 

 

 

 

115 VAC.

 

 

 

4.

Measure the resistance over the hot surface igniter. This

 

 

 

 

should be between 45 and 400 Ohms.

 

 

 

5.

Replace the hot surface igniter if necessary.

 

 

 

 

 

 

Phase and Zero

Correctly connect the Phase and the Zero (3.9 “Electrical

 

 

incorrectly connected

connection”). The device is phase-sensitive.

 

 

 

 

 

 

Error in the ionisation

1. Check if the hot surface igniter has been properly connected.

 

 

circuit

 

See (12.2 “Electrical circuit diagram”).

 

 

 

2. Check the cabling of the hot surface igniter.

 

 

 

3. Check if the ground wire of the burner has been properly

 

 

 

 

connected.

 

 

 

4. Replace the hot surface igniter if necessary.

 

 

 

 

 

 

Supply voltage too low

Check the supply voltage. This should be 230VAC (-15% +10%).

 

 

 

 

 

 

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

47

Page 48 Page 50
Image 49
Page 48 Page 50
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 contentIntroduction What to do when you smell gas RegulationsAbout the device 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 deviceHeating cycle Operation of the deviceSecurity of the device Introduction Air pressure switch Security of the water temperatureGas control 4 FanVented installation Unvented installation3 T&P valve 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 unvented InstallationsDrain vented Start up Opening the gas valve 3.5 Connections diagramStart up Introduction You can Shut downFor 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 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.
Top Page Image Contents