A.O. Smith EQ 115 G, EQ 155 G, EQH 200 G manual Gas connection, Flue system

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2.1.3 Gas connection

The gas supply to this appliance must be installed in accordance with BS 6891 (1988).

Fit the 1/2" gas supply cock supplied with this unit immediately before the gas control block. No heat or soldered joints should be applied in the vicinity of the gas control block, as they could cause damage to the control.

All connections and joints should be tested for gas soundness with a suitable leak detector (do not use a naked flame).

2.1.4 Flue system

The water heater should be fitted with a flue system connected to the draught diverter. The flue pipe should rise for at least 50 cm. vertically before the inclusion of any bends. If a horizontal run of flue is required this should be kept to the minimum length possible and incorporate a rise of 6 cm. per metre of run. A split clip or flange should be provided in the flue close to the draught diverter for ease of servicing.

All flue materials should be corrosion resistant i.e. stainless steel or galvanised and must include a tested and approved terminal to BS 5440 part I. If the flue passes through any combustible material measures must be taken to protect against the possibility of fire.

All flues must terminate in free air space approx. 1.5 metres from any vertical surface of structure i.e. chimney stacks, roof parapets, etc. If an existing chimney or flue is to be used this should be swept clean and be free of debris before an approved liner is installed and connected to the water heater.

2.1.5Flue down draught safety device

The draught diverter has already been provided with a temperature probe ex factory for signalling returning flue gases. The probe of the down draught

supervision must remain installed on the draught hood.

Connect the slide connectors of the down draught supervision to the thermocouple (see Figure 5) and install the head of the down draught supervision in the bracket; see Figure

5.The draught hood must be positioned in its normal place with the temperature probe at the front of the boiler. Pass the wiring of the temperature probe through the cable duct.

Note

The screws with which the down draught supervision has been mounted in the bracket are already in the bracket.

IMD 0422

IMD 0422

Figure 5 - Down draught supervision installation

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Contents INSTALLATION- and User Instructions Page Contents Appliance DescriptionAOS Flue down draught safety device Technical safety equipmentGas control valve AOS Technical description DimensionsDimensions Device category II2H3+ Technical dataInstallation Installation instructionsWater connections AOS Flue system Gas connectionFilling the water heater CommissioningPutting into operation Putting out of operation Pilot adjustmentRemoving 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 warning3 Use CommissioningPutting 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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