WL500
Manual
Page 16 Revision 4‐10‐2019
Dispensing Hot Water from the
WL500 Water Treatment System
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
Water Treatment System
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 Water Treatment System
Typically, the
WL500
Water Treatment System
hot water temperature is set to 87.2
°
C
(
189
°
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 10‐seconds, which will raise the hot water temperature about
2
°
F. 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 95
°
C
(
203
°
F), and the
extra heating will be disabled. At this point, 95
°
C (203
°
F) hot water can be dispensed from the
WL500
,
Water Treatment System
which is a desired temperature for soups/teas. The
WL500
Water Treatment
System
will return to the hot temperature set point after the extra hot water is dispensed.
Dispensing Premium Sparkling Water from the
WL500 Water Treatment System
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
Water Treatment System
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, 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.