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Instruction Manual
resIdentIal Gas water heaters
power vent/power dIrect vent Gas Models
wIth hot surface IGnItIon
Model vG6250t100 serIes 124/125
complies with scaqMd low nox rule 1146.2
American Water Heater
Johnson City, TN 37605
• for Your safety •
AN ODORANT IS ADDED TO THE GAS USED
Thank you for buying this energy efficient water heater.
BY THIS WATER HEATER.
We appreciate your confidence in our products.
all technIcal and warrantY questIons: SHOULD BE DIRECTED TO THE LOCAL DEALER FROM
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table of contents SAFE INSTALLATION, USE AND SERvICE .................................3 Commonwealth of Massachusetts ...........................................22 APPROvALS .................................................................................3 Installation of Carbon Monoxide Detectors ..............................22 GENERAL SAFETY INFORMATION .............................................4 Approved Carbon Monoxide Detectors....................................22 Precautions .........
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safe InstallatIon, use and servIce The proper installation, use and servicing of this water heater is extremely important to your safety and the safety of others. Many safety-related messages and instructions have been provided in this manual and on your own water heater to warn you and others of a potential injury hazard. Read and obey all safety messages and instructions throughout this manual. It is very important that the meaning of each safety message is understood by you and others who
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General safetY InforMatIon precautIons hYdroGen Gas flaMMable DO NOT USE THIS APPLIANCE IF ANY PART HAS BEEN UNDER WATER. Immediately call a qualified service agency to inspect the appliance and to make a determination on what steps should be taken next. Explosion Hazard If the unit is exposed to the following, do not operate heater until all corrective steps have been made by a qualified service agency. Flammable hydrogen gases may be present. 1. External fire. Keep all ignition sources awa
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General safetY InforMatIon 5
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General safetY InforMatIon Fire or Explosion Hazard Fire Hazard Do not store or use gasoline or other flammable vapors and For continued protection against liquids in the vicinity of this or any other appliance. risk of fire: Avoid all ignition sources if you smell gas. Do not install water heater on Do not expose water heater controls to excessive gas carpeted floor. pressure. Do not operate water heater if Use only the gas shown on the water heater rating plate. flood damaged. Maintain require
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IntroductIon Thank You for purchasing this water heater. Properly installed and The principal components of the water heater are identified maintained, it should give you years of trouble free service. in Features And Components on page 8 in this manual. Use this reference to locate and identify various components on the abbrevIatIons used water heater. Abbreviations found in this Instruction Manual include : See the Installation Checklist and Troubleshooting on page 50. By using this checkl
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features and coMponents Get t o Know Your w ater heater - Gas Models a control assembly M display enclosure Z t emperature and pressure relief v alve b blocked Inlet switch ** n exhaust elbow assembly aa rating plate c blocked outlet switch ** o condensate t ubing bb labels d blower prover switch p off/on switch cc drain v alve e blower assembly q display label ** dd v ent t erminal f burner assembly r hot w ater outlet ee drain pan G flame sensor t Gas supply f
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InstallatIon consIderatIon rouGh In dIMensIons fIGure 1a. t able 1 – rough-In-dimensions Units A B C D E F G H I Inches 66.75 49.25 22.00 15.75 3.00 8.00 8.00 62.00 65.00 cm 169.5 125.09 55.88 40.00 7.62 20.32 20.32 157.48 165.1 t op/side Inlet and outlet: 3/4” npt Gas Inlet: 1/2” npt t able 2 – capacity, Gas and electrical characteristics Approximate Capacity Manifold Pressure Electrical Characteristics U.S. Gals. Liters Gas Type “WC kPA Volts/Hz Amperes 50 189 Nat./LP 0” 0” 120/60 <5 all model
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locatInG the w ater heater Carefully choose a location for the new water heater. The placement is a very important consideration for the safety of the occupants in the building and for the most economical use of the appliance. CAUTION Property Damage Hazard • All water heaters eventually leak. Do not install without adequate drainage. • Whether replacing an existing water heater or installing the water heater in a new location observe the following critical points: 1. The water heater must b
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in an alcove or closet, the entire floor must be covered by the panel. • Do not apply insulation to the top of the water heater, as this will Failure to heed this warning may result in a fire hazard. interfere with safe operation of the blower assembly. • Do not cover the outer door, thermostat or temperature & pressure relief valve. • 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
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ventilation systems, clothes dryers and fireplaces shall also be outdoor aIr throuGh two openInGs considered in determining the adequacy of a space to provide combustion, ventilation and dilution air. unusuall Y tIGht constructIon In unconfined spaces in buildings, infiltration may be adequate to provide air for combustion, ventilation and dilution of flue gases. However, in buildings of unusually tight construction (for example, weather stripping, heavily insulated, caulked, vapor barrier,
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2 1. 1 square inch per 3000 Btu/hr (700 mm per kW) of the total aIr froM other Indoor spaces input rating of all appliances located in the enclosure, and 2. Not less than the sum of the areas of all vent connectors in the space. outdoor aIr throuGh two horIZontal ducts fIGure 7. fIGure 6. The confined space shall be provided with two permanent The confined space shall be provided with two permanent horizontal openings, one commencing within 12 inches (300 mm) of the top ducts, one commencing
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InstallInG the new water heater cheMIcal v apor corrosIon 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 This water heater shall not be connected to any heating systems or conditioning refrigerants, swimming pool chemicals, calcium component(s) used with a non-potable water heating appliance. and sodium ch
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pressure reducing or flow regulating control valve should be used in MIXInG v alves the line to the dishwashing machine and should be adjusted to deliver water pressure between these limits. Water temperature over 125°F (52°C) can cause severe burns instantly resulting in severe injury or death. HOT WATER OUTLET Children, the elderly and the 12” TO 15” (30-38 cm) physically or mentally disabled are at TEMPERED WATER highest risk for scald injury. OUTLET Feel water before bathing or CHECK COLD
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fIGure 9. closed w ater sYsteMs fIGure 10. Water supply systems may, because of code requirements or such conditions as high line pressure, among others, have installed note: to protect against untimely corrosion of hot and cold devices such as pressure reducing valves, check valves, and back water fittings, it is strongly recommended that di-electric unions flow preventers. Devices such as these cause the water system to or couplings be installed on this water heater when connected be a
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Fit pipe insulation over the incoming cold water line and the hot No valve or other obstruction is to be placed between the Temperature-Pressure Relief Valve and the tank. Do not connect water line. Make sure that the insulation is against the top cover of discharge piping directly to the drain unless a 6” (15.2 cm) air gap is the heater.Fit T & P valve insulation over valve. Make sure that the provided. To prevent bodily injury, hazard to life, or property damage, insulation does not inte
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before placing the water heater in operation. Gas pIpInG The water heater and its individual Shut-off valve shall be disconnected from the gas supply piping system during any pressure testing of that system at test pressures in excess of 1/2 pound per square inch (3.5 kPa). It shall be isolated from the gas supply piping system by closing its individual manual Shut-off valve during any pressure testing of the gas supply piping system at test pressures equal to or less than 1/2 pound per sq
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the bottom of the unit (see figure 12). Condensate from this water • Slope the condensate drain toward the inside floor drain or heater is mildly acidic. Please note that some local codes require condensate pump. that condensate is treated by using a pH neutralizing filter prior to • The condensate drain line and connection to the drain piping disposal. must comply with all local codes. Caution must be used to ensure that the drain is free and clear of hIGh altItude InstallatIons debris and
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plannInG the vent sYsteM ventInG Plan the route of the vent system from the exhaust elbow to the planned location of the vent terminal. 1. Layout total vent system to use a minimum of vent pipe and elbows. 2. This water heater is capable of venting flue gases equivalent to 45’ (13.7 m) of 2” pipe, 128’ (39 m) of 3” pipe as listed in Table 5. t able 5 number of 2” Maximum 3” Maximum 90° elbows pipe - ft. (m) pipe - ft. (m) 1 40 (12.19) 120 (36.57) 2 35 (10.66) 115 (35.05) 3 30 (9.14) 110 (33.
