GENERAL SAFETY INFORMATION

EXTERNAL DAMAGE

Do not operate the water heater until it has been fully checked out by a qualified technician, if the water heater:

•Has been exposed to fire or damage.

•Displays evidence of sooting.

•Produces steam or unusually hot water.

If the water heater has been subject to flooding it must be replaced.

CHEMICAL VAPOR CORROSION

WARNING

CORROSION OF THE FLUEWAYS AND VENT SYSTEM MAY OCCUR IF AIR FOR COMBUSTION CONTAINS CERTAIN CHEMICAL VAPORS. SUCH CORROSION MAY RESULT IN FAILURE AND RISK OF ASPHYXIATION.

Spray can propellants, cleaning solvents, refrigerator and air conditioning refrigerants, swimming pool chemicals, calcium and sodium chloride (water softener salt), waxes, and process chemicals are typical compounds which are potentially corrosive.

Do not store products of this sort near the heater. Also, air which is brought in contact with the heater should not contain any of these chemicals. If necessary, uncontaminated air should be obtained from remote or outside sources. The limited warranty is voided when failure of water heater is due to a corrosive atmosphere. (See limited warranty for complete terms and conditions).

LP gas must be used with great caution. It is highly explosive and heavier than air. It collects first in the low areas making its odor difficult to detect at nose level. If LP gas is present or even suspected, do not attempt to find the cause yourself. Go to a neighbor's house, leaving your doors open to ventilate the house, then call your gas supplier or service agent. Keep area clear until a service call has been made.

At times you may not be able to smell an LP gas leak. One cause is odor fade, which is a loss of the chemical odorant that gives LP gas its distinctive smell. Another cause can be your physical condition, such as having a cold or a diminishing sense of smell with age. For these reasons, the use of a propane gas detector is recommended.

IF YOU EXPERIENCE AN OUT-OF-GAS SITUATION, DO NOT TRY TO RELIGHT APPLIANCES YOURSELF. Ask your LP delivery person to relight pilots for you. Only trained LP professionals should conduct the required safety checks in accordance with industry standards.

EXTENDED NON-USE PERIODS

WARNING

HYDROGEN GAS CAN BE PRODUCED IN A HOT WATER SYSTEM SERVED BY THIS HEATER THAT HAS NOT BEEN USED FORALONG PERIOD OF TIME (GENERALLY TWO WEEKS OR MORE). HYDROGEN GAS IS EXTREMELY FLAMMABLE. To reduce the risk of injury under these conditions, it is recommended that the hot water faucet be opened for several minutes at the kitchen sink before using any electrical appliance connected to the hot water system. If hydrogen is present, there will probably be an unusual sound such as air escaping through the pipe as the water begins to flow. THERE SHOULD BE NO SMOKING OR OPEN FLAME NEAR THE FAUCET AT THE TIME IT IS OPEN.

IMPROPER COMBUSTION

WARNING

ATTICAND/OR EXHAUST FANS OPERATING ON THE PREMISES WITH A WATER HEATER CAN RESULT IN CARBON MONOXIDE POISONING AND DEATH.

OPERATION OF THESE FANS CAN PRODUCE A NEGATIVE DRAFT IN THE AREA OF THE WATER HEATER PREVENTING THE PRODUCTS OF COMBUSTION FROM EXHAUSTING THROUGH THE VENT PIPE.

The venting of the water heater should be inspected by a qualified service technician at the time of installation and periodically thereafter to ensure a down-draft condition does not exist.

DO NOT OBSTRUCT THE FLOW OF COMBUSTION AND VENTILATING AIR. ADEQUATE AIR FOR COMBUSTION AND VENTILATION MUST BE PROVIDED FOR SAFE OPERATION.

LIQUID PETROLEUM MODELS

WARNING

Water heaters for propane or liquefied petroleum gas (LPG) are different from natural gas models. A natural gas heater will not function safely on LP gas and no attempt should be made to convert a heater from natural gas to LP gas.

INSULATION BLANKETS

Insulation blankets available to the general public for external use on gas water heaters are not necessary with this product. The purpose of an insulation blanket is to reduce the standby heat loss encountered with storage tank heaters. Your water heater meets and exceeds the Energy Policy Act with respect to insulation and standby loss requirements, making an insulation blanket unnecessary.

WARNING

Should you choose to apply an insulation blanket to this heater, you should follow these instructions (See Figure 1 for identification of components mentioned below). Failure to follow these instructions can restrict the air flow required for proper combustion, potentially resulting in fire, asphyxiation, serious personal injury or death.

•Do not cover the gas valve or temperature & pressure relief valve.

•Do not allow insulation to come within 2" of the dilution air inlet on the blower, to prevent blockage of the dilution air.

•Do not allow insulation to come within 2" of the floor to prevent blockage of combustion air flow to the burner.

3

Page 2 Page 4
Page 3
Image 3
A.O. Smith GPS-75 owner manual External Damage, Chemical Vapor Corrosion, Extended NON-USE Periods, Improper Combustion
Page 2 Page 4

GPS-75 specifications

The A.O. Smith GPS-75 is a state-of-the-art gas water heater designed to deliver efficient and reliable hot water solutions to residential and light commercial users. With its sleek design and advanced technology, this unit stands out in the competitive water heating market.

One of the primary features of the GPS-75 is its impressive 75-gallon capacity, making it ideal for larger households or businesses that require a substantial volume of hot water. This water heater delivers a first-hour rating of up to 91 gallons, ensuring that you will always have enough hot water on demand, even during peak usage times.

The GPS-75 utilizes a high-efficiency gas burner that operates at an energy factor of 0.67, which helps to minimize energy costs while providing robust heating performance. This means that users can enjoy powerful hot water output without having to worry about skyrocketing energy bills. Additionally, the unit is equipped with a state-of-the-art electronic ignition system that ensures reliable startup and operation. This feature eliminates the need for a pilot light, enhancing safety and energy efficiency.

In terms of durability, the GPS-75 features a glass-lined interior which protects the tank from rust and corrosion. This adds to the unit's longevity and reduces the need for maintenance and replacement. The water heater also comes with insulating foam in the tank and a special temperature and pressure relief valve to enhance safety.

Another notable technology included in the GPS-75 is its advanced diagnostics feature. This system is designed to monitor and diagnose problems, allowing for quick troubleshooting and minimizing downtime. This is especially useful for service professionals and homeowners alike, as it facilitates efficient maintenance and reduces unexpected repair costs.

The GPS-75 also has an environmentally friendly design, meeting stringent energy efficiency guidelines. This aligns with the growing demand for sustainable solutions in modern homes and businesses.

In summary, the A.O. Smith GPS-75 gas water heater combines an impressive 75-gallon capacity, high efficiency, and advanced safety features to offer users a reliable and economical hot water solution. With its innovative technologies and durable construction, it stands as a strong contender in the water heating industry. Whether for residential or commercial use, the GPS-75 ensures that hot water is always available when needed.
Top Page Image Contents