AquaStar 125X NG Manual de instruções de instalação e funcionamento - Página 10
Procurar online ou descarregar pdf Manual de instruções de instalação e funcionamento para Aquecedor de água AquaStar 125X NG. AquaStar 125X NG 16 páginas. Automatic instantaneous type water heaters for use with natural and liquefied petroleum gas
Imprimir páginaMAINTENANCE AND SERVICE
Approximately once a year, the AquaStar should be
checked, cleaned and serviced as necessary. To remove
the front cover, first remove the incandescent particle tray,
then pull off the temperature adjustment knob and unscrew
and remove the plastic collar. Pull main cover out toward
you and lift up and out. THE FOLLOWING OPERATIONS
SHOULD BE PERFORMED BY A QUALIFIED SERVICE
PERSON:
Vent System: Should be checked annually. Clean and
repair as needed.
Water Valve (Part # 8707002499): The water valve on
this heater should be serviced periodically The frequency
will depend on the mineral content of the water and
conditions of use or whenever signs of corrosion appear
at the gas and water valve joint. Check that the water inlet
filter (#28 on Figure 14, page 14) is clean.
Pilot Flame: The pilot flame should burn with a clean,
sharp, blue flame and should resemble the diagram in
Fig.10. If the flame is soft and yellow, the pilot burner orifice
may need to be cleaned or replaced. The pilot flame should
be approximately 2 inches long, extending past the flame
sensor. If the flame is too small, it will not reach the flame
sensor and the burners will not come on.
3mm
Fig. 10 - Characteristic Pilot Flame
To clean the pilot burner and/ or the pilot orifice : Turn
off the gas to the unit. Set the On/Off switch to Off (position
0). Remove the cover of the heater. To do so, pull off the
temperature adjustment knob and unscrew and remove
the plastic collar. Pull main cover out toward you and lift
up and out. The pilot orifice should be cleaned or replaced.
Do not enlarge the orifice.
10
Correct gap between pilot
burner tip and electrode tip
Piezo Electrode
Flame sensor
Piezo
Electrode
Do not use any wire or sharp object to clean orifices.
Natural gas orifices are large enough that you can usually
clean them by blowing through them. LP orifices, on the
other hand, are too small to clean and should be replaced.
To access the pilot orifice, remove 2 screws holding pilot
assembly in place. Then loosen compression fittings to
expose pilot orifice.
Fig. 11 - Pilot burner with pilot orifice
Main Burner Flames: The main burner flames should be
blue, with a more intense blue cone in the center core.
Yellow flames could be a sign of wrong size gas orifices or
dirty burners, or a blockage on the heat exchangers fins.
If some burners have yellow flames while others have good
flames, it is likely that dust, lint or spider webs have partially
clogged the burner venturis. To clean the burners, contact
a gas service person.
Mineral Scale Build-up: AquaStars, when operated at
lower temperature settings, tend not to accumulate mineral
buildup. If however, the heater is used at the higher
temperature settings and the water has a high mineral
content, periodic descaling may be necessary. The heating
coils should be flushed with a descaling solution. Consult
your dealer or Controlled Energy for instructions.
TROUBLE SHOOTING
Introduction
The AquaStar 125X burners are activated by a water flow
valve. Numerous water related problems can cause this
water valve to malfunction such as: Insufficient water flow
volume to activate the burners at its minimum flow
requirement; Dirt in the water flow valve causing it to
malfunction; Sediment build-up in faucet aerators, or
shower heads; Uneven pressures between cold and hot.
(with single lever faucets) Plumbing cross overs. These
water flow related problems can cause the heater to deliver
less than its full output, or to fail to ignite or to shut down
completely.
Problems are stated in upper case, bold face. Most
common causes for the problems follow in order of
likelihood. The suggested solutions require that the cover
be taken off. To do this, remove incandescent particle tray,
pull off the temperature adjustment knob and unscrew and
remove the plastic collar. Pull main cover out toward you
and lift up and out.
PILOT ORIFICE