Installation

•Do not cover the instruction manual. Keep it on the side of the water heater or nearby for future reference.

•Do obtain new warning and instruction labels for placement on the blanket directly over the existing labels.

•Do inspect the insulation blanket frequently to make certain it does not sag, thereby obstructing combustion air flow.

REQUIRED ABILITY

INSTALLATION OR SERVICE OFTHIS WATER HEATER REQUIRES ABILITY EQUIVALENT TO THAT OF A LICENSED TRADESMAN IN THE FIELD INVOLVED. PLUMBING, ELECTRICAL, AIR SUPPLY, VENTINGAND GAS SUPPLYARE REQUIRED.

GENERAL

MAKE SURE that the gas supply where this water heater will be installed is the same as that stated on its model and rating plate.

The installation must conform to these instructions and the local code authority having jurisdiction. In the absence of local codes, the installation must conform to the latest edition of National Fuel Gas Code ANSI Z223.1/NFPA 54 and the National Electric Code, NFPA 70. The former is available from the Canadian Standards Association, 8501 East Pleasant Valley Road, Cleveland, OH 44131, and both documents are available from the National Fire Protection Association, 1 Batterymarch Park, Quincy, MA 02269.

GROUNDING

The water heater, when installed, must be grounded in accordance with local codes, or in the absence of local codes:

In the United States

The National Electric Code, ANSI/NFPA 70.

HIGH ALTITUDE INSTALLATION

CAUTION

INSTALLATIONS ABOVE 2000 FT. REQUIRE REPLACEMENT OF THE BURNER ORIFICE IN ACCORDANCE WITH THE NATIONAL FUELGAS CODE (ANSI Z223.1/NFPA54). FAILURE TO REPLACE THE ORIFICE COULD RESULT IN IMPROPER AND INEFFICIENT OPERATION OF THE APPLIANCE, PRODUCING CARBON MONOXIDE GAS IN EXCESS OF SAFE LIMITS, WHICH COULD RESULT IN SERIOUS PERSONAL INJURY OR DEATH. CONTACT YOUR GAS SUPPLIER FOR ANY SPECIFIC CHANGES WHICH MAY BE REQUIRED IN YOUR AREA.

SOME MODELS ARE BUILT SPECIFICALLY FOR HIGH ALTITUDE SERVICE.

PLEASE CHECKTHE RATING PLATE BEFORE MAKING CHANGES.

LOCATION OF HEATER

When installing the heater, consideration must be given to proper location. Location selected should be as close to the outside wall to be used for terminations as practicable with adequate air supply and as centralized with the water piping system as possible.

The heater is design certified by the Underwriter's Laboratory for installation on combustible flooring in a closet having minimum

clearances from combustible material of: 0" clearance from sides and rear, 5" from the front and 12" from the top. (Standard clearance.) If clearances stated on the heater differ from standard clearances, install water heater according to clearances stated on heater.

A minimum clearance of 4" must be allowed for access to replaceable parts such as the thermostats, drain valve and relief valve. A top clearance of 24" should be allowed for blower assembly service.

Adequate clearance for servicing this appliance should be considered before installation, such as changing the anodes, etc. Minimum clearances for proper operation are given above.

WARNING

In cold climates provide protection against freeze-up.

THE HEATER SHOULD BE LOCATED IN AN AREA WHERE LEAKAGE OF THE TANK OR CONNECTIONS WILL NOT RESULT IN DAMAGE TO THE AREAADJACENT TO THE HEATER OR TO LOWER FLOORS OF THE STRUCTURE. When such locations cannot be avoided, a suitable drain pan should be installed under the heater, see fig. 1. The pan must not restrict combustion air flow. Such pans should have a minimum length and width of at least 2 inches greater than the diameter of the heater and should be piped to an adequate drain. Drain pans suitable for these heaters are available from your dealer.

Installation of the water heater must be accomplished in such a manner that if the tank or any of the connections should leak, the flow will not cause damage to the structure. For this reason, it is not advisable to install the water heater in an attic or upper floor. When such locations can not be avoided, a suitable drain pan should be installed under the water heater.

Drain pans are available at your local hardware store. Such a drain pan must have a minimum length and width of at least 2 inches (51

mm)greater than adequate drain. The pan must not restrict combustion air flow.

Water heater life depends upon water quality, water pressure and the environment in which the water heater is installed. Water heaters are sometimes installed in locations where leakage may result in property damage, even with the use of a drain pan piped to a drain. However, unanticipated damage can be reduced or prevented by a leak detector or water shut-off device used in conjunction with a piped drain pan.

These devices are available from some plumbing supply wholesalers and retailers, and detect and react to leakage in various ways:

•Sensors mounted in the drain pan that trigger an alarm or turn off the incoming water to the water heater when leakage is detected.

•Sensors mounted in the drain pan that turn off the water supply to the entire home when water is detected in the drain pan.

•Water supply shut-off devices that activate based on the water pressure differential between the cold water and hot water pipes connected to the water heater.

•Devices that will turn off the gas supply to a gas water heater while at the same time shutting off its water supply.

WARNING

DO NOT INSTALL THIS WATER HEATER DIRECTLY ON A CARPETED FLOOR. A FIRE HAZARD MAY RESULT. Instead the water heater must be placed on a metal or wood panel extending beyond the full width and depth by at least 3 inches (76.2mm) in any direction. If the heater is installed in a carpeted alcove or closet, the entire floor shall be covered by the panel.

AIR REQUIREMENTS

In calculating the free area of a vent opening, the blocking effect of screens, louvers and grills should be considered. Screens shall not be of a mesh smaller than 1/4 inch square. If the free area is

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.