Revision 1.1
Page 13
Dispensing Hot Water from the
WL500
To dispense hot water, select the small HOT (Button 3) and release. HOT will appear in the
display, and press the Main Dispense Button. This will open the hot input solenoid (Solenoid 1–
not shown above) and allow hot water to dispense through the faucet. The
WL500
can be
programmed to default back to COLD or Sparkling after 3 seconds of inactivity as a safety
feature to prevent accidental dispensing of hot water.
Dispensing Extra Hot Water from the
WL500
Typically, the
WL500
hot water temperature is set to 189
o
F. In some cases, extra hot water is
desired for making soups and teas. To temporarily raise the hot water temperature, users can
depress and release the EXTRA HOT select button (button 4). The word HEATING will appear in
the display for 30-seconds, which will raise the hot water temperature about 2 degrees. If the
user presses the EXTRA HOT select button again after 30-seconds have expired, the word
HEATING will appear in the display, and the temperature in the hot tank will be raised another
2
o
F. Eventually, as the process is repeated, the hot tank temperature will reach up to 203
o
F,
and the extra heating will be disabled. At this point, 203
o
F hot water can be dispensed from
the
WL500
, which is a desired temperature for soups/teas. The
WL500
will return to the hot
temperature set point after the extra hot water is dispensed.
Dispensing Premium Sparkling Water from the
WL500
To dispense sparkling water, press and release Sparkling (Button 2). SPARKLING will appear in
the display. From this point, the user has 3-seconds to press the Main Dispensing Button for
Premium Sparkling Water. The unit will default back to COLD water after 3 seconds unless the
Default Set is changed to Sparkling. (See Programming Section)
When the Main Dispensing Button is pressed, Solenoid 5 will open, and the CO
2
gas supply from
the bottle will push sparkling water out of the sparkling water chamber to the faucet. The CO
2
supply is what forces sparkling water out of the sparkling chamber. The sparkling water
chamber is 1 liter in size and a maximum of 1 liter of sparkling water can be dispensed to the
glass at a time. Once the sparkling tank empties of sparkling water, only CO
2
gas will dispense
to the glass. At this point, the main dispensing button must be released to allow the
WL500
to
make another batch of Premium Sparkling Water.
When the Main Dispensing Button is released, Solenoid 2 and 3 will open, and the Booster
Pump will start the
Mizzling Process
. The Booster Pump will draw cold, still water from the Cold
Tank, forcing that water through Solenoid 3 and the check valve into the spray header inside of
the sparkling chamber. The spray will enter the sparkling chamber as a fine mist that will
absorb the CO
2
gas that is present in the chamber. Once the sparkling tank fills with water, the
level probe mounted in the top of the sparkling tank will detect the water and signal the PCB to
shut down the booster pump, as well as close Solenoid 2 and 3. Note that the booster pump
can supply this spray up to approximately 70 psi, and if the CO
2
gas pressure is too high, the
booster pump will not be able to overcome the gas pressure, and will “dead-head”. If the
booster pump runs for 10 minutes without a signal from the level sensor, the PCB will shut
down the sparkling water process and signal a NO WATER SUPPLY FAULT will be displayed.
