A.O. Smith EQ 155 G, EQ 115 G, EQH 200 G 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 INSTALLATION- and User Instructions 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 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 985 R1

EQH 200 G, EQ 115 G, EQ 155 G specifications

A.O. Smith, a reputable name in the water heating industry, has designed premium water heaters that cater to various needs, including the EQ 155 G, EQ 115 G, and EQH 200 G models. These units emphasize efficiency, reliability, and advanced technology to provide users with optimal hot water solutions.

The A.O. Smith EQ 155 G is a gas water heater that boasts a 155-gallon capacity. Designed for high-demand households, it features an impressive recovery rate, allowing it to deliver hot water quickly. One of the standout features is its Energy Factor rating, which ensures energy efficiency and reduced operating costs. The EQ 155 G is also equipped with a durable enamel-coated tank that resists corrosion, ensuring longevity.

Similarly, the EQ 115 G model offers a slightly smaller capacity of 115 gallons, making it an excellent choice for medium-sized households. This gas-powered heater incorporates cutting-edge technology to maximize heat retention and minimize water heating costs. With features such as a patented Venturi mixing system, it provides uniform hot water distribution while minimizing energy wastage. Its slim design also allows for easy installation in tight spaces.

On the other hand, the EQH 200 G is a hybrid model that combines the benefits of both gas and heat pump technology. With a capacity of 200 gallons, it is designed for large families or commercial applications. The EQH 200 G utilizes advanced heat pump technology for energy-efficient heating, making it one of the most efficient options on the market. This model is particularly suitable for users looking to reduce their carbon footprint while enjoying consistent hot water supply.

All three models come equipped with user-friendly digital displays, allowing for easy temperature adjustments and monitoring. Moreover, these units feature robust safety mechanisms, including leak detection and temperature controls, to ensure user safety.

In summary, the A.O. Smith EQ 155 G, EQ 115 G, and EQH 200 G are innovative water heating solutions tailored to meet diverse requirements. With advanced technologies, high energy efficiency, and durability, these models exemplify A.O. Smith's commitment to quality and customer satisfaction in the water heating industry.
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