9
The position you select on the temperature adjustment knob
will depend on the temperature of the incoming water (50°F
is average in the U.S.). In warm weather regions where the
incoming cold water is generally warmer, or during the hot
weather months in some other areas a midway setting on
the temperature adjustment knob would produce a
temperature rise of about 70°F, giving an output of
approximately 120°F. At this setting, if it is still necessary,
one could mix a small amount of cold water in a shower
and have a comfortable shower at about 3 gallons/minute.
During the colder months, or in cold climate areas, it might
be necessary to set the control to the maximum position,
all the way clockwise to the right.
Do not supply the AquaStar 125X with preheated water.
For this type of application, purchase a solar model 125B
LPS or 125B NGS.
Fig. 8 - Temperature Adjustment Knob
LIGHTING AND OPERATING INSTRUCTIONS
1. STOP! Read the safety information above on this label.
2. The gas valve must be shut off by putting the ON/OFF
switch to position “0”. Wait five (5) minutes to clear out
any gas. If you smell gas, STOP! Follow “B” in the safety
information above. If you do not smell gas, go to the
next step.
3. This water heater is equipped with a safety pilot burner
and an automatic ignition control system.
4. Set the ON/OFF switch (flip down cover plate on frontal
panel strip) marked
I
/0 to the
I
position. In this position,
the water heater is ready to use.
5. If the red LED indicator light (visible through the
peephole in the front panel strip) is flashing, this is a
warning that the batteries are less than 1.2 Volts and
will need to be replaced within the next couple of weeks.
Plan to have two D type 1.5 volt long-life (Alkaline)
batteries available for replacement.
6. Turn the hot water faucet on the minimum flow rate
required to activate the heater. The automatic ignition
system first ignites the safety pilot burner which then
ignites the main burner in about 4 seconds.
7. The pilot flame will extinguish 10-30 seconds after the
burners come on. The burners will remain on until the
hot water tap is turned off.
NOTE: On a first time initial installation, existence of air in
the gas supply line and in the water line may cause some
ignition delay. In that case, repeatedly open and close the
hot water tap in order to restart the ignition process until
all the air has been purged.
TO TURN OFF GAS TO APPLIANCE
Turn off the manual lever on the gas supply line to the
heater and set the ON/OFF switch to the OFF ( 0 ) position.
See Fig 9.
SETTING THE WATER TEMPERATURE
The AquaStar 125 X LP and 125 X NG water heaters have a
gas control that modulates burner input in response to flow.
Its purpose is to ensure that the hot water temperature will
remain steady, although the water flow demand might vary
(down to 1/2 gal/minute). To adjust the temperature on your
AquaStar, turn on a hot water faucet to its maximum flow.
At the water heater, turn the large knob located beneath
the main gas control on the front of the heater all the way
to the right (clockwise). See Fig 8. This will produce a
temperature rise of approximately 90°F at flow rates between
0.5 and 2.0 gallons per minute. Given that average incoming
water temperatures are 50°F, this heater will produce
approximately 140°F water at these flow rates. Turning the
dial all the way to the left (counterclockwise) will produce a
temperature rise of approximately 45°F for flow rates
between 1.1 and 3.7 gallons per minute. It is safest to select
a comfortable temperature and not have to mix in cold water.
TEMPERATURE
ADJUSTMENT KNOB
Align batteries as
shown
To operate the heater, set the ON/OFF switch to position
I
.
The switch is located behind the flip down cover plate on
the front panel strip.
To shut down the gas to the heater, set the ON/OFF switch
to position 0
Temperature Adjustment Knob
If the LED light is flashing, prepare to
replace the batteries. Use two D cell
(1.5 volt) long life alkaline batteries.
G667_092
G667_090
G667_091
G661_004
Decrease temperature
and increase flow
Increases temperature
and decreases flow
Fig. 9 - Principles of Operation
