10
LIGHTING INSTRUCTIONS (as seen on front
cover of heater)
1. STOP!Readthesafetyinformation above on thisplate.
2. The Gas valve must be turned off by sliding the gas
valve button to the far left under the OFF ( ) mark.
3. Wait five (5) minutes to clear out any gas. If you smell
gas, STOP! Follow “B”in the safety information above
on this plate. If you don’t smell gas, go to next step.
4. The pilot burner is located behind the peephole in the
front center of the jacket directly below this instruction
plate.
5. Slide the gas valve button to the right, under the pilot
mark ( ).
6. Fullydepressgasvalvebuttonandlight pilot by pushing
“PILOT IGNITER”button ( ). This step may have to
be repeated.
7. Observe the pilot flame through the peephole. The gas
valve button should be held down at least 15 seconds
withpilotburning.Whenthe gasvalvebuttonisreleased,
the pilot should continue to burn.
- If the gas valve button does not pop up when released,
stopandimmediately call yourservicetechnician or gas
supplier.
- If pilot does not stay lit, repeat steps 1 through 7.
- If pilot will not stay lit after several tries, slide the gas
valvebutton to theleft, under the OFF( ) mark andcall
service technician or gas supplier.
8.Oncepilotremains lit, thenslide the gasvalve button to
the right, under the ON mark ( ). The heater will now
fire when water is drawn at a rate greater than the
thresholdflowrate.
NOTE: If main burner should fail to ignite, make sure pilot
is burning. If not, repeat lighting steps 1 through 7.
TO TURN OFF GAS TO APPLIANCE
Slide the gas valve button to the far left, under the off ( )
mark and close the gas supply to the heater.
SETTING THE WATER TEMPERATURE
TheAquaStar125BLP and 125 B NGwaterheatershave
a gas control that modulates burner input in response to
flow. Itspurposeistoensurethat thehotwatertemperature
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 controls on the front of the
heaterall the way to the right (clockwise). SeeFig 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.
Fig. 8 - Water Flow Control Knob
Thepositionyouselectonthetemperatureadjustmentknob
willdependonthetemperatureoftheincoming water (50°F
isaverageintheU.S.).Inwarmweatherregionswherethe
incomingcold water isgenerally warmer, or duringthe 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
approximately120°F. Atthis setting, if it isstillnecessary,
one could mix a small amount of cold water in a shower
andhavea comfortable shower atabout3gallons/minute.
Duringthecolder months, or incoldclimate areas, itmight
be necessary to set the control to the maximum position,
all the way clockwise to the right.
Do not supply the AquaStar 125B with preheated water.
Forthis type ofapplication, purchase a solar model125 B
LPS or 125 B NGS.
MAINTENANCE AND SERVICE
REVIEW MAINTENANCE TABLE ON
THE BACK OF THIS MANUAL
Approximatelyonceayear,theAquaStarshouldbechecked
and cleaned. To remove the front cover, first remove the
incandescent particle tray, then pull off the temperature
adjustmentknobandunscrewandremovetheplasticcollar.
Pull main cover out toward you and lift up and out. THE
FOLLOWINGOPERATIONS SHOULD BE PERFORMED
BYAQUALIFIED SERVICEPERSON:
Vent System: Should be checked annually. Clean and
repairasneeded.
Water Valve (Part # 8707002499):Thewatervalveonthis
heatershouldbeservicedperiodically.Lubricatecomponent
#24 on page 14 with a small amount of silicon, faucet or
lithiumgreaseeverytwoyearstokeepits o rings freshand
pushrod sliding smoothly. Every 3-5 years replace
components #24 and #25 on page 14. The frequency will
dependonthe mineral content ofthewater and conditions
of use or whenever signs of corrosion appear at the gas
andwatervalvejoint.Periodicallycheckthatthewaterinlet
filter (#28 on page 14) is clean as well.
Pilot Flame: Thepilotflameshouldburn with acleansharp
blueflameandshouldresemblethe diagram in Fig 9. If the
flameisyellow,orifthepilotknobhastoremaindepressed
for a long time in order to keep the pilot lighted, the pilot
burnerandorthepilotburnerorificemayneedtobecleaned,
the orifice may need to be replaced, and or the air screen
may need cleaning. The pilot flame should envelop
approximately 10 mm (3/8") of the tip of the
