A.O. Smith EQH 200 G, EQ 155 G Setting the nominal heat input, Converting to another type of gas

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2.6Setting the nominal heat input

The gas control has been factory preset to the water heater nominal heat input.

A further check of the burner pressure should be carried out during the commissioning of the unit after installation. The following procedure should be followed.

1.Remove the protruding cover screw on the right side of the gas control block and connect a U-gauge manometer to the outlet.

2.Put the appliance into operation and ignite the burner.

3.Check the burner pressure and, if necessary, reset by means of the adjusting screw “pr adj” (pressure adjustment; see Figure 9). To make this possible the temperature control

knob should be removed by pulling it straight forward, making the “pr adj” visible. Turning clockwise reduces the pressure; turning anti clockwise increases the pressure. It is recommended to check the heat input by means of the gas meter.

4.Turn off the appliance and remove the manometer hose and replace the adjusting screw.

5.Replace the thermostat control knob.

6.Put the appliance into operation.

2.7Converting to another type of gas

For conversion of the appliance from natural gas to another type of gas, or vice versa, it is necessary to exchange the pilot injector and the main injector. The conversion may only be executed by a qualified competent person.

AOS0486

Figure 9 - Setting the nominal load

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Contents INSTALLATION- and User Instructions Page Contents Appliance DescriptionAOS Gas control valve Technical safety equipmentFlue down draught safety device AOS Technical description DimensionsDimensions Device category II2H3+ Technical dataWater connections Installation instructionsInstallation AOS Flue system Gas connectionPutting into operation CommissioningFilling the water heater Removing and replacing the inner door Pilot adjustmentPutting out of operation 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 warningPutting out of operation Commissioning3 Use 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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