To Next PageTo Next PageHow to increase hot water on A.O. Smith Water Heater?
If you're experiencing insufficient hot water or slow hot water recovery with your A.O. Smith Water Heater, try increasing the temperature set point. Refer to the 'Adjusting the Temperature' section on page 16 of your manual.
Why is A.O. Smith Vortex FPTU-50 Water Heater temperature too high?
If the water temperature from your A.O. Smith Water Heater is too high, it may be due to a non-functioning thermostat, a grounded/shorted heating element, or a faulty thermostatic mixing valve. For a non functioning thermostat, replace the ECO (page 30). For a grounded/shorted heating element, replace the heating element (page 29). For a faulty thermostatic mixing valve, check hot water at other faucets.
Why does my A.O. Smith Water Heater smell bad?
If the water from your A.O. Smith Water Heater smells bad, it might be due to a concentration of sulfate in the supply water, little or no dissolved oxygen in the water, sulfate reducing bacteria, or an excess of active hydrogen in the tank. Contact a qualified person for replacement of anode.
General| Category | Water Heater |
|---|---|
| Manufacturer | A.O. Smith |
| Model | Vortex FPTU-50 |
| Capacity | 50 gallons |
| Fuel Type | Natural Gas |
| Vent Type | Power Vent |
| Type | Tank |
| Water Connections | 3/4" NPT |
| Gas Connection | 1/2" NPT |
| Input BTU/hr | 50, 000 BTU/hr |
| Maximum BTU/h Input | 50, 000 BTU/hr |
| Ignition Type | Electronic |
| Warranty | 6 years |
Important details to retain for reference.
Hazards during installation and maintenance, including electrical shock and lifting.
Dangers during operation like scalding, fire, explosion, and water contamination.
Warnings for explosion, fire, and hydrogen gas buildup.
List of optional but recommended items for installation.
Verify home readiness, water pressure, location, and clearances.
Safely remove old unit and position new water heater.
Connect condensate, T&P, water supply, and drain lines.
Fill tank, electrical connections, modes, and temperature adjustment.
Diagnosing and resolving issues when no hot water is produced.
Addressing drips from the T&P relief valve discharge pipe.
Troubleshooting problems related to water odor.
Explaining normal operational noises from the unit.
Addressing issues of temperature too high or low water pressure.
Resolving lack of hot water or slow water heating.
General maintenance schedule and tasks for longevity.
Procedure to remove sediment and scale from the tank.
Instructions for replacing heating elements, ECO, and T&P valves.
Cleaning the air filter and condensate system components.
Information on how to order replacement parts for the unit.
