Table of Contents
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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.
KEEP THIS MANUAL IN THE POCKET ON HEATER FOR FUTURE REFERENCE
PRINTED 1208
RESIDENTIAL GAS WATER HEATERS
GAMA certification applies
to all residential gas water
heaters with capacities of 20
to 100 gallons with input rating
of 75,000 BTU/Hr. or less.
WHENEVER MAINTENANCE ADJUSTMENT OR SERVICE IS REQUIRED.
POWER VENTED GAS MODELS WITH HOT SURFACE IGNITION
NOT FOR USE IN MANUFACTURED (MOBILE) HOMES
•
AN ODORANT IS ADDED TO THE GAS USED
1
Instruction Manual
For Your Safety
BY THIS WATER HEATER.
•
315465-000
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Table of Contents
Related Manuals for A.O. Smith ProMax Power-Vent 185237-004
Summary of Contents for A.O. Smith ProMax Power-Vent 185237-004
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Page 1: Instruction Manual
GAMA certification applies to all residential gas water heaters with capacities of 20 to 100 gallons with input rating of 75,000 BTU/Hr. or less. ALL TECHNICAL AND WARRANTY QUESTIONS: SHOULD BE DIRECTED TO THE LOCAL DEALER FROM WHOM THE WATER HEATER WAS PURCHASED. -
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: Table Of Contents
SAFE INSTALLATION, USE AND SERVICE...2 GENERAL SAFETY...3 TABLE OF CONTENTS ...4 INTRODUCTION ...4 Preparing for the New Installation ...4 INSTALLATION REQUIREMENTS FOR THE COMMONWEALTH OF MASSACHUSETTS ...5 TYPICAL INSTALLATION ... 6-7 LOCATING THE NEW WATER HEATER ... 8-9 Facts to Consider About Location ... 8-9 Insulation Blankets ...9 Combustion Air and Ventilation for Appliances Located in Unconfi... -
Page 5: Installation Requirements For The Commonwealth Of Massachusetts
INSTALLATION REQUIREMENTS FOR THE COMMONWEALTH OF MASSACHUSETTS 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 wall exhaust vent termination is less than seven (7) feet above fi... -
Page 6: Typical Installation
GET TO KNOW YOUR WATER HEATER - GAS MODELS A Vent Pipe–Exhaust B Vent Terminal C Vent Adapter-Rubber Boot D Blower Assembly E Cold Water Inlet F Inlet Water Shut-off Valve G Union H Inlet Dip Tube J Anode** K Hot Water Outlet L Outlet Receptacle (115 VAC) M Temperature-Pressure Relief Valve * ALL PIPING MATERIALS TO BE SUPPLIED BY CUSTOMERS. - Page 7 This appliance has been design certifi ed 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.
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Page 8: 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 9: Insulation Blankets
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 clearances stated on the heater. Adequate clearance for servicing this appliance should be considered before installation, such as changing the anodes, etc. A minimum clearance of 5"... - Page 10 Chemical vapor corrosion of the fl ue, blower assembly and vent system may occur if air for combustion contains certain chemical vapors. Spray can propellants, cleaning solvents, refrigerator and air conditioner refrigerants, swimming pool chemicals, calcium and sodium chloride, waxes, bleach and process chemicals are typical compounds which are potentially corrosive.
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Page 11: Installing The Water Heater
INSTALLING THE NEW WATER HEATER WATER PIPING HOTTER WATER CAN SCALD: Water heaters are intended to produce hot water. Water heated to a temperature which will satisfy space heating, clothes washing, dish washing, cleaning and other sanitizing needs can scald and permanently injure you upon contact. -
Page 12: 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 cold water inlet connection. Do not solder the cold water supply line directly to the cold water inlet. -
Page 13: 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 fi... -
Page 14: 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 fi tting with a capped nipple in the bottom outlet or other device recognized as an effective sediment trap. -
Page 15: Vent Pipe Connection To Blower Assembly
VENT CONNECTIONS TO BLOWER ASSEMBLY Figure 15 shows the optimal placement of the 2" to 3" or 3" to 4" reducer; however, the vent can be reduced at any point in the vent system as long as the maximum and minimum vent length requirements are met. - Page 16 The unit may be vented horizontally through a wall or vertically through the roof. Pipe runs must be adequately supported along both vertical and horizontal runs as follows: • For Schedule 40, 2" PVC, ABS, Coex Cellular Core vent pipe: Every 3 feet (0.9 m).
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Page 17: Vent Terminal Installation
For 4" Venting, the maximum equivalent feet of pipe allowed is 160 feet (48.8 m). This does not include the Vent Termination (supplied locally) for the water heater. For the 4" venting, one 90° elbow is approximately equal to 8 feet (2.4 m). One 45° elbow is approximately equal to 4 feet (1.2 m). -
Page 18: Vertical Vent Termination Restrictions
This unit can vent through 2", 3" or 4" nonmetallic pipe and fi ttings. The vent pipe installation can be started from either the blower discharge or the termination wall. Keep in mind the total vent system (pipe and elbows) when installing the vent system, see VENTING AND INSTALLATION, pages 15 - 17. -
Page 19: Vent Pipe Preparation
VENT PIPE PREPARATION 1. INITIAL PREPARATION Make sure the solvent cement you are planning to use is designed for the specifi c 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. - Page 20 B. Deburring Use a knife, plastic pipe deburring tool, or fi le 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 22: Temperature Regulation
TEMPERATURE REGULATION Due to the nature of the typical gas water heater, the water temperature in certain situations may vary up to 30°F (16.7°C) higher or lower at the point of use such as, bathtubs, showers, sink, etc. It is recommended that lower water temperatures be used to avoid the risk of scalding. -
Page 23: For Your Information
START UP CONDITIONS CONDENSATE Whenever the water heater is fi lled with cold water, some condensate will form while the burner is on. A water heater may appear to be leaking when in fact the water is condensate. This usually happens when: a. -
Page 24: 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 fl ow must not be obstructed. 2. -
Page 25: Anode Rod Inspection
INSTALLED IN SUITABLE AREA: To insure suffi cient 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 fl ammable liquids, etc. must not be placed against or adjacent to the water heater which can cause a fi... -
Page 26: Service
8. Follow the lighting instructions in the “Lighting” section to restart the water heater. FIGURE 23. 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”... -
Page 27: Repair Parts
Key No. Part Description Burner Assembly Burner Head Burner Orifi ce Burner Tube HSI Ignition Assembly Inner Door Inner Door Gasket Flue Baffl e Flue Restrictor Blower Assembly Air Intake Screen - Base Pan Inlet Tube Gas Control Valve Drain Valve Drain Valve Washer Outer Door (may appear different than shown) Anode Rod... -
Page 28: Troubleshooting
TROUBLESHOOTING GUIDELINES TROUBLESHOOTING GUIDELINES TROUBLE SHOOTING Please check guidelines below. For your safety, water heater service should be performed only by a qualifi ed service technician. Read the GENERAL SAFETY INFORMATION section fi rst. - Page 30 TROUBLESHOOTING GUIDELINES TROUBLESHOOTING GUIDELINES These guidelines should be utilized by a qualifi ed service agent. When calling for service notify the service agent that this is a “Flammable Vapor Ignition Resistant” Product. Figure 1 and 15. Page 9.
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Page 31: Warranty
LIMITED RESIDENTIAL GAS WARRANTY THIS WARRANTY IS APPLICABLE TO THE ORIGINAL OWNER ONLY. If the glass lined tank in this water heater shall prove upon examination by (the warrantor) to have leaked during the warranty period in normal residential use, due to natural corrosion from potable water therein, the warrantor will furnish the ORIGINAL OWNER a replacement water heater of equivalent size and current model, or a replacement part for any component part which fails in normal use, in accordance with the warranty terms and...