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  4. GPS-75
  5. Instruction Manual

A.O. Smith GPS-75 Instruction Manual

Other manuals for GPS-75: Owner's Manual
Manual is about: RESIDENTIAL GAS WATER HEATERS

Summary of GPS-75

  • Page 1

    1 thank you for buying this energy efficient water heater. We appreciate your confidence in our products. You should thoroughly read this manual before installation and/or operation of this water heater. Please pay particular attention to the important safety and operating instructions as well as th...

  • Page 2

    2 safe installation, use and service your safety and the safety of others is extremely important in the installation, use and servicing of this water heater. 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 poten...

  • Page 3: General Safety

    3 general safety.

  • Page 4: General Safety

    4 general safety.

  • Page 5: Introduction

    5 thank you for purchasing this water heater. Properly installed and maintained, it should give you years of trouble free service. Abbreviations found in this instruction manual: • ansi - american national standards institute • nfpa - national fire protection association • asme - american society of...

  • Page 6

    6 for all side wall terminated, horizontally vented power vent, direct vent, and power direct vent gas fueled water heaters installed in every dwelling, building or structure used in whole or in part for residential purposes, including those owned or operated by the commonwealth and where the side w...

  • Page 7: Typical Installation

    7 (a) vent pipe (b) anode (c) hot water outlet (d) outlet (120 vac) (e) flue baffle (f) gas supply (g) main manual gas shut off valve (h) ground joint union (j) dirt leg (k) outer door (l) union (m) inlet water shut off valve (n) cold water inlet figure 1. Replacement parts and deliming products rep...

  • Page 8: Typical Installation

    8 typical installation figure 2. Mixing valve usage this appliance has been design certified as complying with american national standard for water heaters and is considered suitable for: water (potable) heating and space heating: all models are considered suitable for water (potable) heating and sp...

  • Page 9

    9 facts to consider about the location carefully choose an indoor location for the new water heater, because 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. This water heater is not for use in manufactu...

  • Page 10

    10 minimum clearances between the water heater and combustible construction are 0 inch at the sides and rear, 5.5” (14.0 cm) from the front and 12” (30.5 cm) from the top (standard clearance). If clearances stated on the heater differ from standard clearances, install water heater according to clear...

  • Page 11

    11 manner, should be provided. Each opening should have a free area of not less than one square inch per 4000 btu/hr (5.5 cm 2 /kw) of total input of all appliances in the enclosure. If horizontal ducts are used, each opening should have a free area of not less than one square inch per 2000 btu/hr (...

  • Page 12

    12 as water is heated, it expands (thermal expansion). In a closed system, the volume of water will grow. As the volume of water grows, there will be a corresponding increase in water pressure due to thermal expansion. Thermal expansion can cause premature tank failure (leakage). This type of failur...

  • Page 13

    13 figure 9 shows typical attachment of water piping to water heater. The water heater is equipped with 3/4 inch npt water connections. Note: if using copper tubing, solder tubing to an adapter before attaching the adapter to the water heater connections. Do not solder the water lines directly to th...

  • Page 14

    14 gas piping make sure the gas supplied is the same type listed on the model rating plate. The inlet gas pressure must not exceed 14 inch water column (3.5 kpa) for natural and propane gas (l.P.). The minimum inlet gas pressure shown on the rating plate is that which will permit firing at rated inp...

  • Page 15

    15 sediment traps a sediment trap should be installed as close to the inlet of the water heater as practical at the time of water heater installation. The sediment trap should be either a tee fitting with a capped nipple in the bottom outlet or other device recognized as an effective sediment trap. ...

  • Page 16

    16 2. A venting system should terminate at least 3 feet above any forced air inlet located within 10 feet. 3. The venting system should terminate at least 4 feet below, 4 feet horizontally from or, 1 foot above any door, window or gravity air inlet into any building. 4. The manufacturer also recomme...

  • Page 17

    17 note: this unit can be vented using only the following materials: pvc (cellular core; astm-f891), pvc (dwv; astm d2665 or csa b181.2), pvc (sch 40, 80, 120; astm d1785 or csa b137.3), pvc (sdr series; astm-d2241 or csa b137.3), cpvc (cpvc 41; astm-d2846 or csa b137.6), cpvc (sch 40, 80; astm-f441...

  • Page 18

    18 4. Do not plug in power cord until vent system is completely installed. The power vent operates on 120 vac, therefore a grounded outlet must be within reach of the 6 foot flexible power cord supplied with the vent. The power cord supplied may be used on unit only where local codes permit. If loca...

  • Page 19

    19 caution label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation. Verify proper operation after servicing. Figure 17. Power vent wiring schematic..

  • Page 20

    20 installation of vent system, sidewall with the route of the venting system and selection of materials completed, as discussed in the section of this manual titled planning the vent system, the through the wall vent terminal in place and the first section of piping, up to first elbow, installed at...

  • Page 21

    21 vent pipe preparation 1. Initial preparation a. Make sure the solvent cement you are planning to use is designed for the specific application you are attempting. B. Know the physical and chemical characteristics and limitations of the pvc and cpvc piping materials that you are about to use. C. Kn...

  • Page 22

    22 b. Deburring use a knife, plastic pipe deburring tool, or file to remove burrs from the end of small diameter pipe. Be sure to remove all burrs from around the inside as well as the outside of pipe. A slight chamfer (bevel) of about 10°-15° should be added to the end to permit easier insertion of...

  • Page 23

    23 for your safety read before operating warning: if you do not follow these instructions exactly, a fire or explosion may result causing property damage, personal injury or loss of life. A. This appliance does not have a pilot. It is equipped with an ignition device which automatically lights the b...

  • Page 24: Temperature Regulation

    24 any water heater’s intended purpose is to heat water. Hot water is needed for cleansing, cleaning, and sanitizing (bodies, dishes, clothing). Untempered hot water can present a scald hazard. Depending on the time element, and the people involved (adults, children, elderly, infirm, etc.) scalding ...

  • Page 25: For Your Information

    25 for your information start up conditions smoke/odor it is not uncommon to experience a small amount of smoke and odor during the initial start-up. This is due to burning off of oil from metal parts, and will disappear in a short while. Thermal expansion as water is heated, it expands (thermal exp...

  • Page 26: Periodic Maintenance

    26 venting system inspection at least once a year a visual inspection should be made of the venting system. You should look for: 1. Obstructions which could cause improper venting. The combustion and ventilation air flow must not be obstructed. 2. Damage or deterioration which could cause improper v...

  • Page 27

    27 installed in suitable area: to insure sufficient ventilation and combustion air supply, proper clearances from the water heater must be maintained. See “locating the new water heater” section. Combustible materials such as clothing, cleaning materials, or flammable liquids, etc. Must not be place...

  • Page 28: Leakage Checkpoints

    28 leakage checkpoints never use this water heater unless it is completely filled with water. To prevent damage to the tank, the tank must be filled with water. Water must flow from the hot water faucet before turning “on” gas to the water heater. A *condensation may be seen on pipes in humid weathe...

  • Page 29: Repair Parts List

    29 key no. Part description 1 pipe nipple 2 stamped steel burner 2a cast iron burner 3 burner tube (stamped burner) 3a burner tube (cast iron burner) 4 orifice (stamped steel burner) 4a orifice (cast iron burner) 5 ignitor/flame sensor (stamped steel burner) 5a ignitor/flame sensor (cast iron burner...

  • Page 30: Troubleshooting Guidelines

    30 troubleshooting guidelines trouble shooting please check guidelines below. For your safety, water heater service should be performed only by a qualified service technician. Read the general safety information section first. Intelli-vent troubleshooting chart - residential control problem solution...

  • Page 31: Troubleshooting Guidelines

    31 troubleshooting guidelines trouble shooting please check guidelines below. For your safety, water heater service should be performed only by a qualified service technician. Read the general safety information section first. Intelli-vent troubleshooting chart - residential control problem solution...

  • Page 32: Troubleshooting Guidelines

    32 these guidelines should be utilized by a qualified service agent. Troubleshooting guidelines troubleshooting guidelines.

  • Page 33: Notes:

    33 notes:.

  • Page 34: Notes:

    34 notes:.

  • Page 35

    35 this warranty is applicable to the original owner only. If the glass lined tank in this water heater shall prove upon examination by the a. O. Smith corporation (warrantor) to have leaked during the warranty period in normal residential use, due to natural corrosion from potable water therein, th...

  • Page 36

    36 500 tennessee waltz parkway ashland city, tn 37015 www.Hotwater.Com.