A.O. Smith EQB 155 G Inlet combination, Cleaning, Inspection of the internal waterside surfaces

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2.8.2Cleaning

1.Close the gas supply and demount the burner after it has cooled down,

2.Disconnect the burner, pilot pipe and thermo couple from the gas control block (see Figure 11),

3.Remove the complete burner assembly,

4.Clean the burner with a soft brush.

5.Check the pilot burner and clean it if so required,

6.Check the combustion chamber, flue tube and flue baffle and clean these if required,

7.Re-mount in reverse order. Tighten the thermo couple connection on the gas control block hand tight and tighten it further with a wrench to a maximum of 1/4 turn as it only needs to make contact.

After cleaning of the pilot- and main burner the operation of these should be checked. If necessary the burner pressure of the main burner should be reset.

2.8.3Inspection of the internal waterside surfaces

Formation of lime scale depends on the quality and quantity of the water used. In addition higher water temperatures lead to more deposit in the appliance. A temperature setting of 60°C is recommended in order to keep the calcification at a low level. Decalcification should be attempted with the proper means. For extensive information a decalcification instruction is available.

2.8.4 Spare parts

To be able to order spare parts it is important to note the type of appliance as well as the serial number of the appliance. Based on this information the data concerning the spare parts can be determined.

2.9Inlet combination

Not applicable in U.K. and Ireland.

AOS 0488

Figure 11- Mounting burner-set

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Contents EQB 200 G EQB 115 GEQB 155 G Page Contents Description ApplianceAOS Gas control valve Technical safety equipmentFlue down draught safety device AOS Dimensions Technical descriptionDimensions Technical data Device category II2H3+Water connections Installation instructionsInstallation AOS Gas connection Flue systemPutting into operation CommissioningFilling the water heater Removing and replacing the inner door Pilot adjustmentPutting out of operation Temperature regulation Setting the pilotSetting the nominal heat input Converting to another type of gasDescription Unit EQB G20 G30 G31 Maintenance Sacrificial anodeCleaning Inlet combinationInspection of the internal waterside surfaces Spare partsFault finding Gas smellCondensation Important warningPutting out of operation Commissioning3 Use Maintenance Fault finding Fault Possible causeFault Possible cause Guarantee in general Guarantee of the tankConditions 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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