Reliance Water Heaters T-H3J-DV User Manual (English)

Questions and Answers:

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Derek ShawAug 1, 2025
What to do if hot water is not available from Reliance Water Heaters?
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  Lori JonesAug 1, 2025
  If hot water isn't available when you open a fixture with your Reliance Water Heater, several factors could be at play. First, ensure the unit has a stable 120 VAC, 60 Hz power supply. If you're using a remote or temperature controller, verify it's powered on. Check that both the gas and water supply valves are fully open. Also, inspect the cold water inlet filter to ensure it's clean. Confirm that the hot water fixture is open enough to draw at least 0.5 GPM (1.9 L/min) through the heater. Finally, check that the unit isn't frozen and, for propane models, that there's enough gas in the tank or cylinder.
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Karen JonesAug 5, 2025
Why does the hot water from my Reliance Water Heater turn cold and stay cold?
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  Zachary AlexanderAug 5, 2025
  If your Reliance Water Heater's hot water turns cold and stays cold, several factors could be responsible. First, ensure the flow rate is sufficient to keep the water heater running. If a recirculation system is installed, check that the recirculation line has enough check valves. Also, make sure the gas supply valve is fully open and the filter on the cold water inlet is clean. Finally, ensure that the fixtures are free of debris and obstructions and that the flow rate is not too low.
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Angela BrownAug 11, 2025
How to get hot water faster from Reliance Water Heaters?
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  jramirezAug 11, 2025
  The time it takes to get hot water from your Reliance Water Heater to your fixtures depends on the length of the piping between them; the longer the distance or the bigger the pipes, the longer it takes. If you want hot water faster, consider a hot water recirculation system.
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Angelica SchneiderAug 15, 2025
Why is the hot water temperature fluctuating with my Reliance Water Heater?
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  Mandy LeeAug 15, 2025
  If you're experiencing fluctuations in the hot water temperature with your Reliance Water Heater, start by checking if the filter on the cold water inlet is clean. Ensure the gas line is properly sized and that the supply gas pressure is sufficient. Also, inspect for any cross-connections between the cold and hot water lines.

Reliance Water Heaters T-H3J-DV Specifications

General

Model	T-H3J-DV
Category	Water Heater
Type	Tankless
Voltage	120V
Venting	Direct Vent
Brand	Reliance
Fuel Type	Natural Gas
Energy Factor	0.93 UEF (NG), 0.95 UEF (LP)
Vent Size	3"
Flow Rate	5.5 GPM
Ignition Type	Electronic