Short repeated heating cycles caused by small hot
water uses can cause the temperature to exceed
the thermostat setting by up to 30°F (16.7°C). If you
experience this type of use you should consider using
lower temperature settings to reduce scald hazards.
Any water heater’s intended purpose is to heat water.
Hot water is needed for cleansing, cleaning, and
sanitizing (bodies, dishes, clothing). Untempered hot
water can present a scald hazard. Depending on the
time element, and the people involved (adults, children,
elderly, infirm, etc.) scalding may occur at different
temperatures.
HOTTER WATER CAN SCALD: Water heaters are
intended to produce hot water. Water heated to a
temperature which will satisfy space heating, clothes
washing, dish washing, and other sanitizing needs can
scald and permanently injure you upon contact. See
.
Some people are more likely to be permanently injured by
hot water than others. These include the elderly, children,
the infirm, or physically/mentally handicapped. If anyone
using hot water in your home fits into one of these groups
or if there is a local code or state law requiring a certain
temperature water at the hot water tap, then you must
take special precautions. In addition to using the lowest
possible temperature setting that satisfies your hot water
needs, a means such as a mixing valve should be used
at the hot water taps used by these people or at the water
heater. Mixing valves are available at plumbing supply
or hardware stores, see
(page 7). Follow
manufacturer’s instructions for installation of the valves.
Before changing the factory setting on the thermostat,
read this section and see
WATER TEMPERATURE ADJUSTMENT
The water temperature setting can be adjusted from 55°F
to 160°F. Turn the Gas Control/Temperature Knob to the
desired setting/temperature.
NOTE:
The temperatures indicated are approximates. The actual
temperature of the heated water may vary.
STANDARD MODE
The controller adjusts the water heater to maintain the
temperature set by the user.
VACATION SETTING
The Vacation setting (VAC) sets the controller at
approximately 55°F. This setting is recommended when
the water heater is not in use for a long period of time.
This effectively turns the controller temperature setting
down to a temperature that prevents the water in the
water heater from freezing while still conserving energy.
STATUS LIGHT CODE
Normal Flashes:
•
0 Flashes Indicates Control Off/Pilot Out.
•
1 Flash Indicates Normal Operation.
•
A solid red light indicates that the gas control
valve/thermostat is shutting down.
(page 34) for detailed diagnostic
information.
Never allow small children to use a hot water tap, or
to draw their own bath water. Never leave a child or
handicapped person unattended in a bathtub or shower.
NOTE: A water temperature range of 120°F-140°F
(49°C-60°C) is recommended by most dishwasher
manufacturers.
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 at the “HOT”
setting. Align the knob with the desired water temperature
as shown in
. There is a hot water scald
potential if the thermostat is set too high.
If overheating occurs or the gas supply fails to shut off,
turn off the manual gas control valve to the water heater.
VAC
GAS CONTROL VALVE/THERMOSTAT
SETTINGS
GAS CONTROL/TEMPERATURE KNOB
120°F
MARK
STATUS
LIGHT
IGNITER
FIGURE 20. GAS CONTROL/TEMPERATURE KNOB
TEMPERATURE REGULATION
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