Whirlpool 6510374 用户手册

17

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 
the area are operating and 
all doors are closed when 
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.

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 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.

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.

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

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. 

Figure 19A
Honeywell Gas Valve/Thermostat
Settings

Gas Control/Temperature Knob

Status
Light

Igniter

120°

Mark

120°

Mark

150°

Mark

Index
Mark