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Ashland City, TN 37015
www.hotwater.com
ALL TECHNICAL AND WARRANTY QUESTIONS: SHOULD BE DIRECTED TO THE LOCAL DEALER FROM WHOM THE WATER HEATER WAS
PURCHASED. IF YOU ARE UNSUCCESSFUL, PLEASE WRITE TO THE COMPANY LISTED ON THE RATING PLATE ON THE WATER HEATER.
PRINTED 1207
COMMERCIAL GAS WATER HEATERS
KEEP THIS MANUAL IN THE POCKET ON HEATER FOR FUTURE REFERENCE
WHENEVER MAINTENANCE ADJUSTMENT OR SERVICE IS REQUIRED.
POWER VENTED GAS MODELS W/HOT SURFACE IGNITION
•
For Your Safety
AN ODORANT IS ADDED TO THE GAS USED
BY THIS WATER HEATER.
1
Instruction Manual
•
197086-002
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Table of Contents
Related Manuals for A.O. Smith W/HOT
Summary of Contents for A.O. Smith W/HOT
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Page 1: Instruction Manual
KEEP THIS MANUAL IN THE POCKET ON HEATER FOR FUTURE REFERENCE WHENEVER MAINTENANCE ADJUSTMENT OR SERVICE IS REQUIRED. PRINTED 1207 Instruction Manual POWER VENTED GAS MODELS W/HOT SURFACE IGNITION • For Your Safety AN ODORANT IS ADDED TO THE GAS USED BY THIS WATER HEATER. -
Page 2: Safe Installation, Use And Service
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 potential injury hazard. -
Page 3: General Safety
GENERAL SAFETY... -
Page 4: General Safety
GENERAL SAFETY... -
Page 5: Table Of Contents
SAFE INSTALLATION, USE AND SERVICE ... 2 GENERAL SAFETY ... 3-4 TABLE OF CONTENTS ... 5 INTRODUCTION ... 5 Preparing for the Installation ... 5 TYPICAL INSTALLATION ... 6-9 ROUGH IN DIMENSIONS ... 8 LOCATING THE NEW WATER HEATER ... 10-12 Facts to Consider About Location ... -
Page 6: Typical Installation
GET TO KNOW YOUR WATER HEATER - GAS MODELS A Vent Pipe B Anode C Hot Water Outlet D Outlet (120 VAC) 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... - Page 7 TYPICAL INSTALLATION CONDENSATE HOSE AND DRAIN PAN * Note: Condensate Trap Loops must be oriented in a vertical plane as shown. The traps also must be primed by filling half of the loop with water prior to operating the water heater. Carefully plan the location of the loops and straight sections of hose prior to cutting hoses.
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Page 8: Rough In Dimensions
ROUGH-IN-DIMENSIONS Rough-In-Dimensions Top/Side Inlet and Outlet: 3/4" NPT Gas Inlet: 1/2" NPT Capacity and Gas and Electrical Characteristics All models - Maximum Supply Pressure: 14 inches W.C. (3.48kPa) Minimum Supply Pressure Natural Gas: 5.0 inches W.C. (1.24kPa) Minimum Pressure must be maintained under both load and no load (static and dynamic) conditions. Recovery Capacities - U.S. -
Page 9: Typical Installation
This appliance has been design certified as complying with American National Standard/CSA 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 space heating. TYPICAL INSTALLATION MIXING VALVE USAGE FIGURE 2. -
Page 10: Locating The New Water Heater
LOCATING THE NEW WATER HEATER 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. -
Page 11: Insulation Blankets
in an alcove or closet, the entire floor must be covered by the panel. Failure to heed this warning may result in a fire hazard. 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"... - Page 12 a free area of one square inch per 1000 Btu/hr (22 cm input of all appliances in the enclosure, but not less than 100 square inches (645 cm If the confined space is within a building of tight construction, air for combustion and ventilation must be obtained from outdoors.
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Page 13: Installing The Water Heater
INSTALLING THE NEW WATER HEATER CHEMICAL VAPOR 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 conditioning refrigerants, swimming pool chemicals, calcium and sodium chloride (water softener salt), waxes, and process chemicals are typical compounds which are potentially corrosive. -
Page 14: Temperature-Pressure Relief Valve
Figure 10 shows the typical attachment of the water piping to the 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 the water heater connections. -
Page 15: Gas Piping
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 input. -
Page 16: Sediment Traps
SEDIMENT TRAPS A sediment trap shall be installed as close to the inlet of the water heater as practical at the time of water heater installation. The sediment trap shall be either a tee fitting with a capped nipple in the bottom outlet or other device recognized as an effective sediment trap. -
Page 17: Vent Pipe Termination
WARNING VENT HOOD(S) MAY BE EXTREMELY HOT DURING OPERATION. VENT PIPE TERMINATION The first step is to determine where the vent pipe will terminate. See Figures 15, 20 and 21. The vent may terminate through a sidewall as shown in Figure 20 or through the roof as shown in Figure 21. The vent system must terminate so that proper clearances are maintained as cited in local codes or the current edition of the National Fuel Gas Code, (ANSI Z223.1, 12.9.1 through 12.9.4) or the Natural... -
Page 18: Planning The Vent System
PLANNING THE VENT SYSTEM Plan the route of the vent system from the discharge of the blower 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 25' (7.6 m) of 2"... -
Page 19: Blower Assembly Installation
The condensate trap may be primed by filling the CONDENSATE U- ASSEMBLY with tap water using the supplied hose while the water heater is not operating. The system is fully primed when the hose is lowered below the hose clamp on the side of the water heater and water begins to flow out of the hose. - Page 20 2. If the Vent Terminal is being installed on the outside of a finished wall, it may be easier to mark both the inside and outside wall. Align the holes by drilling a hole through the center of the template from the inside through to the outside.
- Page 21 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 the blower it is time to complete the installation of the venting system for the sidewall installation.
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Page 22: Vent Attenuation Assembly Installation Instructions
VENT ATTENUATION ASSEMBLY INSTALLATION INSTRUCTIONS The Vent Attenuation Assembly (VAA) is designed to provide a reduction in fan noise created in the blower wheel. This installation of this VAA is optional. Review directions thoroughly prior to installing the new VAA. Please contact the manufacturer of the water heater as shown in the instruction manual with any questions or for additional product support. - Page 23 8. Take the end of the tube at the bottom of the floor and route it to a suitable drain. This will provide an area where the condensate can drain without affecting the area around the appliance. 9. Once installed along with the rest of the vent configuration, make sure to operate the unit through at least one heat up cycle to ensure there is no leakage around the hose barb or any joints of the VAA or vent pipe system.
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Page 24: Vent Pipe Preparation
VENT PIPE PREPARATION 1. INITIAL PREPARATION Make sure the solvent cement you are planning to use is designed for the specific application you are attempting. Know the physical and chemical characteristics and limitations of the PVC and CPVC piping materials that you are about to use. Know the reputation of your manufacturer and their products. - Page 25 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 the pipe. A slight chamfer (bevel) of about 10°-15°...
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Page 26: Lighting & Operating Label
FOR YOUR SAFETY READ BEFORE OPERATING WARNING: explosion may result causing property damage, personal injury or loss of life. BEFORE OPERATING: ENTIRE SYSTEM MUST BE FILLED WITH WATER AND AIR PURGED FROM ALL LINES. A. This appliance does not have a pilot. It is equipped with an ignition device which automatically lights the burner. -
Page 27: Temperature Regulation
TEMPERATURE REGULATION It is recommended that lower water temperatures be used to avoid the risk of scalding. It is further recommended, in all cases, that the water temperature be set for the lowest temperature which satisfies your hot water needs. This will also provide the most energy efficient operation of the water heater. -
Page 28: For Your Information
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 Water supply systems may, because of such events as high line pressure, frequent cut-offs, the effects of water hammer among... -
Page 29: Periodic Maintenance
PERIODIC MAINTENANCE 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. -
Page 30: Anode Rod Inspection
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 placed against or adjacent to the water heater which can cause a fire. -
Page 31: Service
SERVICE If a condition persists or you are uncertain about the operation of the water heater contact a service agency. Use this guide to check a “Leaking” water heater. Many suspected “Leakers” are not leaking tanks. Often the source of the water can be found and corrected. -
Page 32: Troubleshooting
TROUBLESHOOTING GUIDELINES TROUBLESHOOTING GUIDELINES 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 LED STATUS B C D E F Inadequate or no earth ground sensed by the Intelli-Vent™... - Page 33 TROUBLESHOOTING GUIDELINES 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 LED STATUS B C D E F Ignition/flame failure.
- Page 34 TROUBLESHOOTING GUIDELINES TROUBLESHOOTING GUIDELINES These guidelines should be utilized by a qualified service agent.
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Page 35: Warranty
A. O. Smith Corporation, the warrantor, extends the following LIMITED WARRANTY to the owner of this water heater. THE TANK If the glass-lined tank in this water heater shall prove upon examination by the warrantor to have leaked due to natural corrosion from potable water therein, during the first THREE years after initial installation, the warrantor will supply a complete new A.