Rheem Power Direct Vent Series, Use & Care Manual

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30
Water Temperature Setting
…
Maximum water temperatures occur just after the burn-
er has shut off. To determine the water temperature,
turn on a hot water faucet and place a thermometer in
the water stream.
To avoid any unintentional changes in water
temperature settings, the combination gas control
(thermostat) has a tamper resistant feature for changing
the temperature setting. To change the temperature
setting follow these instructions.
1. "Wake Up" the temperature indicators by holding
down both "COOLER" and "HOTTER" temperature
adjustment buttons at the same time for one second,
see Figure below. One or two of the temperature
indicators will light up. These indicators will only
remain on for 30 seconds if no further buttons are
pressed. After 30 seconds the control will go back to
"sleep" mode.
2. Release both of the temperature buttons.
a. To decrease the temperature press and release
the "COOLER" button until the desired setting is
reached.
b. To increase the temperature press and release
the "HOTTER" button until the desired setting is
reached.
NOTE: Holding down the button will not continue to
lower or raise the temperature setting. The button must
be pressed and released for each temperature change
desired.
A condition known as “stacking” or “layering” can
occur when a series of short and frequent hot water
draws are taken.
The hottest temperature water will be at the top of the
tank, closest to the outlet pipe delivering hot water to
the home.
Stacking can cause this top layer of water to be hotter
than the water toward the bottom of the tank near
the combination gas control (thermostat). Therefore,
always remember to test the water temperature with
your hand before use and remember that hotter water
increases the risk of scald injury.
Also, always supervise young children or others who
are incapacitated.
The combination gas control (thermostat) is constructed
with a built in safety shut-off device designed to shut
off the gas supply to the burner if the main burner is
extinguished for any reason.
The gas control (thermostat) is also equipped with a
single use gas shut off device that will shut off the gas
supply to the burner if the water heater exceeds normal
operating temperatures. Refer to the Before You Call
For Service section of this manual, or contact your
dealer.
!
WARNING: Should overheating occur or the gas
supply fail to shut off, turn off the manual gas control
valve to the appliance.
If the water heater has been subjected to fire, flood or
physical damage, turn off the manual gas control (shut-
off) valve, and do not operate the water heater again
until is has been checked by a qualified service techni-
cian.
Time/Temperature Relationship in Scalds
Water Temperature Time To Produce a Serious Burn
120°F (49°C) More than 5 minutes
125°F (52°C) 1
1
/
2
to 2 minutes
130°F (54°C) About 30 seconds
135°F (57°C) About 10 seconds
140°F (60°C) Less than 5 seconds
145°F (63°C) Less than 3 seconds
150°F (66°C) About 1
1
/
2
seconds
155°F (68°C) About 1 second
Table courtesy of Shriners Burn Institute
VACATION
WARNING
VERY
HOT
WARM
A B C
COOLER
HOTTER
Temperature Setting Display
▼ A B C
Burns on Adult Skin
WARM = approx. 70°F (21°C)
● ○ ○ ○ ○ ○
--------------------
▼ = approx. 120°F (49°C)
○ ○ ● ○ ○ ○
More than 5 minutes
A = approx. 130°F (54°C)
○ ○ ○ ● ○ ○
About 30 seconds
B = approx. 140°F (60°C)
○ ○ ○ ○ ● ○
Less than 5 seconds
C = approx. 150°F (66°C)
○ ○ ○ ○ ○ ●
About 1-1/2 seconds
C-Flashing = approx. 160°F (71°C)
○ ○ ○ ○ ○ ●
About 1/2 seconds
Operating the Water Heater