American Water Heater 6510238 Burner Flames, Stacking, Emergency Shut Down

Correct flame

soft blue

Incorrect flame lazy yellow

Figure 16: Flame Characteristics

This may have a yellow tint

Yellow inner cones are satisfactory

Burner Flames

Inspect the burner flames through the viewport and compare them to the drawings in

Figure 16. A properly operating burner

should produce a soft blue flame. Blue tips with yellow inner cones are satisfactory. The

tips of the flame may have a slight yellow tint. The flame should not be all yellow or have a sharp blue-orange color. Contaminated air may cause an orange colored flame. Contact a qualified service technician if the flame is not satisfactory.

Stacking

The thermostat is adjusted to its lowest temperature when it is shipped from the factory. Water temperature can be regulated by moving the temperature dial to the preferred setting. The preferred starting point is 120°F. Align the index bar on the thermostat with the desired water temperature as shown in Figures 17A and 17B.

There is a hot water scald potential if the thermostat is set too high.

Important: Adjusting the thermostat past the 120°F bar on the temperature dial will increase the risk of scald injury. Hot water can produce first degree burns within:

120°F (49°C) more than 5 minutes 130°F (54°C) at 20 seconds 140°F (60°C) at 3 seconds 150°F (66°C) at 1-1/2 seconds 160°F (71°C) at less than 1 second

Figure 17A: Robert Shaw Gas Valve/Thermostat Settings (Natural)

Stacking occurs when a series of short draws of hot water (3 gallons or less) are taken from the water heater tank. This causes increased cycling of the burner and can result in increased water temperatures at the hot water outlet. An anti-scald device is recommended in the hot water supply line to reduce the risk of scald injury.

Emergency Shut Down

Important: Should overheating occur or the gas supply fails to shut off, turn off the water heater’s manual gas

UNITROLALL
READ WA
BEFORE	INSTRUCTIONS
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T		LIGHTING
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RESET

BUTTON

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INDEX

BARS

130° F

BAR

130°	F	120° F
		BAR
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control valve and call a qualified service technician.

Water Temperature Regulation

Water temperature over 125°F can cause severe burns instantly or death from scalds.

Children, disabled and elderly are at highest risk of being scalded.

See instructions manual before setting temperature at water heater.

Feel water before bathing or showering. Temperature limiting valves are available.

Figure 17B: Robert Shaw Gas Valve/Thermostat Settings (L.P.)

120° F

GAS

130° F

BAR

CONTROL

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READ ALL INSTRUCTIONS

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Note: During low demand periods when hot water is not being used, a lower thermostat setting will reduce energy losses and may satisfy your normal hot water needs. If hot water use is expected to be more than normal, a higher thermostat setting may be required to meet the increased demand. When leaving your home for extended periods (vacations, etc.) turn the temperature dial to its lowest setting. This will maintain the water at low temperatures with minimum energy losses and prevent the tank from freezing during cold weather.

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