Whirlpool W10100870 Checking the Draft, Water Temperature Regulation, Burner Flames, Stacking

Figure 18

Flame Characteristics

Tips may have a yellow tint

Yellow inner

cones are satisfactory

Checking the Draft

WARNING

Burn Hazard

Do not touch vent.

Doing so can result in burns.

After successfully lighting the water heater, allow the unit to operate for 15 minutes and check the drafthood relief opening for proper draft. Make

sure all other appliances in	Figure 17	Drafthood
the area are operating and
			Relief
all doors are closed when	Match		Opening
performing the draft test. Pass
a match flame around the relief
opening of the drafthood. A
steady flame drawn into the
opening indicates proper draft.
If the flame flutters or is blown

out, combustion products are escaping from the relief opening. If this occurs,

do not operate the water heater until proper

adjustments or repairs are made to the vent

pipe system and/or air supply requirements.

Burner Flames	Correct flame
	soft blue

Inspect the burner

flames through the viewport and compare them to the drawings in Figure 18. 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 person if the flame is not satisfactory.

Stacking

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 control valve and call a qualified person.

Water Temperature Regulation

WARNING

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.

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

The thermostat is adjusted to the pilot position 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 knob with the desired water temperature as shown in Figure 19A. 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

Figure 19A
Honeywell Gas Valve/Thermostat	120°
Settings
Gas Control/Temperature Knob	Mark
150°
Mark
Status
Light
120°
Mark	Index
Igniter
	Mark

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 the vacation (VAC) 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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