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 IN THE U.S.A 0905
RESIDENTIAL GAS W
RESIDENTIAL GAS W A A A A A TER HEA
RESIDENTIAL GAS W
RESIDENTIAL GAS W
RESIDENTIAL GAS W
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.
Instruction Manual
NOT FOR USE IN MANUFACTURED (MOBILE) HOMES
C3 Technology
®
Gas Water Heaters meet the new
ANSI Z21.10.1 standard that deals with the accidental or
unintended ignition of flammable vapors, such as those
emitted by gasoline.
•
For Your Safety
AN ODORANT IS ADDED TO THE GAS USED
BY THIS WATER HEATER.
1
TER HEA
TER HEA TERS
TER HEA
TERS
TERS
TERS
TER HEA
TERS
®
•
PART NO. 184165-003
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Table of Contents
Related Manuals for A.O. Smith GCVT-40
Summary of Contents for A.O. Smith GCVT-40
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Page 1: Instruction Manual
Instruction Manual RESIDENTIAL GAS W RESIDENTIAL GAS W RESIDENTIAL GAS W A A A A A TER HEA TER HEA TER HEA TER HEA TERS TERS TERS TERS RESIDENTIAL GAS W RESIDENTIAL GAS W TER HEA TERS NOT FOR USE IN MANUFACTURED (MOBILE) HOMES GAMA certification applies to all residential gas water heaters with capacities of 20... -
Page 2: Safe Installation, Use And Service
SAFE INST SAFE INSTALLA SAFE INST ALLA ALLA ALLATION TION TION, USE AND SERVICE TION , USE AND SERVICE , USE AND SERVICE , USE AND SERVICE SAFE INST SAFE INST ALLA TION , 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 GENERAL SAFETY GENERAL SAFETY GENERAL SAFETY GENERAL SAFETY... -
Page 4: Table Of Contents
T T T T T ABLE OF CONTENTS ABLE OF CONTENTS ABLE OF CONTENTS ABLE OF CONTENTS ABLE OF CONTENTS SAFE INSTALLATION, USE AND SERVICE ....... 2 Draft Hood Operation ............. 16 GENERAL SAFETY ..............3 Condensate .............. 16-17 TABLE OF CONTENTS .............. 4 Smoke/Odor .............. -
Page 5: Typical Installation
TYPICAL INST TYPICAL INST TYPICAL INST TYPICAL INST TYPICAL INSTALLA ALLA ALLA ALLA ALLATION TION TION TION TION GET TO KNOW YOUR WATER HEATER - GAS MODELS A Vent Pipe J Drip Leg (Sediment Trap) S Flue Baffle B Drafthood K Inner Door Thermostat C Anode... -
Page 6: Mixing Valve Usage
TYPICAL INST TYPICAL INST TYPICAL INST TYPICAL INST TYPICAL INSTALLA ALLA ALLA ALLATION ALLA TION TION TION TION MIXING VALVE USAGE FIGURE 2. This appliance has been design certified as complying with American HOTTER WATER CAN SCALD: National Standard/CSA Standard for water heaters and is considered suitable for: Water heaters are intended to produce hot water. -
Page 7: Locating The New Water Heater
L L L L L OCA TING THE NEW W TING THE NEW WA A A A A TER HEA TING THE NEW W TER HEA TER HEA OCATING THE NEW W TING THE NEW W TER HEA TER HEATER being ignited, gasoline and other flammable substances should never FACTS TO CONSIDER ABOUT THE LOCATION be stored or used in the same vicinity or area containing a gas water... -
Page 8: Insulation Blankets
Should you choose to apply an insulation blanket to this heater, you should follow these instructions (For identification of components mentioned below, see Figure 1). Failure to follow these instructions can restrict the air flow required for proper combustion, potentially resulting in fire, asphyxiation, serious personal injury or death. - Page 9 3. When communicating with the outdoors through horizontal ducts, unconfined space. The total input of all gas utilization equipment installed each opening shall have a minimum free area of 1 square inch per in the combined space shall be considered in making this determination. 2,000 Btu per hour (11 cm /kW)) of total input rating of all equipment Each opening shall have a minimum free area of one square inch per...
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Page 10: Installing The Water Heater
INST INST INST INST INSTALLING THE NEW W ALLING THE NEW W ALLING THE NEW W ALLING THE NEW WA A A A A TER HEA ALLING THE NEW W TER HEA TER HEA TER HEATER TER HEA WATER PIPING As water is heated, it expands (thermal expansion) and closed systems do not allow for the expansion of heated water. -
Page 11: Temperature-Pressure Relief Valve
The valve must be marked with a maximum set pressure not to exceed Figure 9 shows the typical attachment of the water piping to the water heater. The water heater is equipped with 3/4 inch NPT water the marked hydrostatic working pressure of the water heater (150 psi = 1,035 kPa) and a discharge capacity not less than the water connections. -
Page 12: Filling The Water Heater
FIGURE 10. FILLING THE WATER HEATER To insure proper venting of this gas-fired water heater, the correct vent pipe diameter must be utilized. Any additions or deletions of other gas appliances on a common vent with this water heater may adversely affect the operation of the water heater. -
Page 13: Gas Piping
There must be a minimum of 6 inches (153 mm) clearance between If the main gas line Shut-off serving all gas appliances is used, also single wall vent pipe and any combustible material. Fill and seal any turn “off” the gas at each appliance. Leave all gas appliances shut clearance between single wall vent pipe and combustible material with “off”... -
Page 14: Sediment Traps
Use pipe joint compound or teflon tape marked as being resistant to the (3.5 kPa). It shall be isolated from the gas supply piping system by action of petroleum [Propane (L.P.)] gases. 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 The appliance and its gas connection must be leak tested before placing 1/2 pound per square inch (3.5 kPa). -
Page 15: Lighting & Operating Label
FOR YOUR SAFETY READ BEFORE LIGHTING WARNING: If you do not follow these instructions exactly, a fire or 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. -
Page 16: Temperature Regulation
TEMPERA TEMPERA TURE REGULA TURE REGULA TION TION TEMPERA TEMPERA TEMPERATURE REGULA TURE REGULA TURE REGULATION TION TION NOTE: A water temperature range of 120°F-140°F (49°C-60°C) is Due to the nature of the typical gas water heater, the water recommended by most dishwasher manufacturers. temperature in certain situations may vary up to 30F°... -
Page 17: Smoke/Odor
Because of the suddenness and amount of water, condensation water OPERATIONAL CONDITIONS may be diagnosed as a “tank leak”. After the water in the tank warms up (about 1-2 hours), the condition should disappear. SMELLY WATER Do not assume the water heater is leaking until there has been enough In each water heater there is installed at least one anode rod (see time for the water in the tank to warm up. -
Page 18: Periodic Maintenance
PERIODIC MAINTENANCE PERIODIC MAINTENANCE PERIODIC MAINTENANCE PERIODIC MAINTENANCE PERIODIC MAINTENANCE VENTING SYSTEM INSPECTION You should check for sooting. Soot is not normal and will impair proper combustion. Soot build-up indicates a problem that requires correction before further use. Turn “OFF” gas to water heater and leave off until repairs are made, because failure to correct the cause of the sooting can result in a fire causing death, serious injury, or property damage. -
Page 19: Anode Rod Inspection
If after manually operating the valve, it fails to completely reset and INSTALLED IN SUITABLE AREA: To insure sufficient ventilation and continues to release water, immediately close the cold water inlet to combustion air supply, proper clearances from the water heater must the water heater, follow the draining instructions, and replace the be maintained. -
Page 20: Service
8. Follow the lighting instructions in the “Lighting” section to restart the SERVICE water heater. 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 21: Repair Parts
AIR P AIR P ARTS LIST ARTS LIST REPAIR P AIR P AIR PARTS LIST ARTS LIST ARTS LIST Key No. Part Description Burner Assembly Burner Head Burner Orifice Burner Tube Pilot Assembly Inner Door Inner Door Gasket Flue Baffle Flue Restrictor Drafthood Air Intake Screen... -
Page 22: Troubleshooting
TROUBLESHOOTING GUIDELINES TROUBLESHOOTING GUIDELINES TROUBLESHOOTING GUIDELINES TROUBLESHOOTING GUIDELINES TROUBLESHOOTING GUIDELINES These guidelines should be utilized by a qualified service agent. When calling for service notify the service agent that this is a “Flammable Vapor Ignition Resistant” Product. Problem Cause Solution Improperly sealed, hot or cold supply connection, Tighten threaded connections. -
Page 23: Notes
NOTES: NOTES: NOTES: NOTES: NOTES:... - Page 24 ®...