A.O. Smith EQB 115 G, EQB 200 G manual Fault finding, Gas smell, Condensation, Important warning

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2.10 Fault finding

In case of failure the following should be checked.

2.10.1 Safety thermostat

All appliances have been fitted with a safety thermostat that shuts off the gas supply when the water temperature is too high. The safety thermostat remains activated until the water temperature drops below the safety temperature. The water heater must be reignited manually. The regulation thermostat should be set to a lower water temperature. If the pilot is extinguished repeatedly at higher temperatures than normal, this indicates that the safety thermostat is operating.

2.10.2 Flue down draught safety device

If the flue tube safety device has switched off the appliance, the appliance can be put back into operation through the normal procedure. If the flue tube safety device repeatedly puts the appliance out of operation then this points to problems with the flue. The only remedy is to determine the cause of the problem (for instance a blocked chimney) and to solve the problem.

2.10.3Hot water temperature too low

1.Check the setting of the temperature control knob.

2.Check whether the pilot is alight. If necessary ignite (see “Putting into operation”).

3.Check whether there are any leaks or open taps.

4.Is the gas supply adequate? Check and correct if necessary.

5.Perhaps the hot water consumption is higher than was originally calculated.

6.Check whether the cold water inlet has been correctly connected.

7.Check the thermostat sensor for scale build up.

2.10.4Hot water temperature too high

Check whether the control thermostat is set too high.

2.10.5Possible water leakage

1.Check whether the drain tap is fully closed.

2.Check whether all water connections are water tight.

3.Check whether the possible water leakage could be caused by condensation.

2.11 Gas smell

Warning

Immediately shut the main gas tap. Do not light any fire or switch on any lights, do not use any electrical switches or alarm bells. Open windows. Thoroughly inspect all gas connections and, if the gas smell persists, alert the local gas company and/or your installer.

2.12 Condensation

If the appliance is filled with cold water or if the hot water consumption is very high, condensation of flue gasses will occur on the cold surfaces of the combustion chamber and the flue tube. The water drops will fall on the burner and cause a sizzling noise. This is a normal phenomenon that will disappear as soon as the appliance reaches its normal operating temperature.

Important warning

The applicance should NEVER be taken into operation with a closed cold water supply!

Provision should always be made for expansion.

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Contents EQB 115 G EQB 155 GEQB 200 G Page Contents Appliance DescriptionAOS Technical safety equipment Flue down draught safety deviceGas control valve AOS Technical description DimensionsDimensions Device category II2H3+ Technical dataInstallation instructions InstallationWater connections AOS Flue system Gas connectionCommissioning Filling the water heaterPutting into operation Pilot adjustment Putting out of operationRemoving and replacing the inner door Setting the pilot Temperature regulationConverting to another type of gas Setting the nominal heat inputDescription Unit EQB G20 G30 G31 Sacrificial anode MaintenanceInlet combination CleaningInspection of the internal waterside surfaces Spare partsGas smell Fault findingCondensation Important warningCommissioning 3 UsePutting out of operation Maintenance Fault Possible cause Fault findingFault Possible cause Guarantee of the tank Guarantee in generalConditions for installation and use Range of guaranteeAny other dealer or stockist of the warrantors products Page Page Page Page 0307 630 R1

EQB 115 G, EQB 155 G, EQB 200 G specifications

A.O. Smith has established a strong reputation in the water heating industry, and their EQB series of gas water heaters exemplifies this commitment to innovation and efficiency. The EQB 200 G, EQB 155 G, and EQB 115 G models are crafted to meet various residential needs while showcasing advanced technologies and user-friendly features.

The EQB 200 G is the powerhouse of the series, designed to accommodate households with higher hot water demands. It boasts a 199,000 BTU per hour input, enabling quick heating and sustaining higher output even during peak usage times. The unit features a robust tank capacity, ensuring an ample supply of hot water when needed. A.O. Smith's unique combustion system enhances the efficiency of this model, optimizing fuel consumption and reducing operational costs.

Next, the EQB 155 G offers a perfect balance for medium-sized households. With a maximum input of 155,000 BTU per hour, this water heater is capable of delivering consistent hot water without compromising on energy efficiency. The smart design includes a built-in temperature control that allows for precise adjustments, making it convenient to set the desired water temperature. Its compact design enables easier installation in smaller spaces, while still providing quality performance.

For smaller households or those with lower hot water requirements, the EQB 115 G is an ideal choice. This model operates at a maximum of 115,000 BTU per hour, making it perfect for apartments or modest-sized homes. The EQB 115 G features innovative insulation technology, significantly reducing heat loss and enhancing overall efficiency. This not only conserves energy but also contributes to lower utility bills over time.

All models in the EQB series are equipped with A.O. Smith's exclusive Cyclone 2 venting system, designed to facilitate efficient airflow and reduce the risk of backdrafts. Additionally, the advanced ignition system promotes reliable performance while minimizing maintenance needs.

A key standout feature across this series is the integrated smart technology, which provides real-time monitoring of water temperature and energy consumption. This connectivity allows homeowners to track their water usage and make adjustments to optimize performance further.

In summary, the A.O. Smith EQB series - including the EQB 200 G, EQB 155 G, and EQB 115 G - showcases superior technology, user-centric design, and energy-efficient operation. These gas water heaters are engineered to cater to a variety of household needs without sacrificing performance or convenience.
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