Use And Care Manual

whl-590 Rev. 003 Rel. 003 Date 3.22.18
48
C. Changing the DHW Set-Point
NOTE: The setpoint cannot be changed if water is owing through
the unit. Ensure there is no demand on the water heater when
changing the setpoint.
The display shows the icon when the DHW set-point can be
changed.
Figure 50 - DHW Set-Point Screen
Press the button when the display panel is powered ON to
change the DHW Set-Point. The DHW icon and current set-point
will display and ash. This indicates that the DHW Set-Point can be
changed. Factory DHW Set-Point is 125
o
F (51
o
C). Initial DHW Set-
Point range is 100 – 120
o
F (38 – 49
o
C).
Turn the dial counterclockwise to lower and clockwise to raise
the DHW set-point. After changing the temperature, press the
button to save the set-point.
To change the DHW Set-Point above 121
o
F (49.5
o
C) press, then press
and hold the button when the display panel is powered ON.
The DHW icon and current set-point will display and ash. Then
press and hold the button for ve seconds. The scald warning
symbol “ ” (high temperature) will display. High temperature
DHW Set-Point range is 121 – 140
o
F (49.5 – 60
o
C).
To change the DHW Set-Point above 140
o
F (60
o
C), go into the
Installer Mode. Advance to parameter 21:rE and change the setting
from rE to Co. Then leave Installer Mode. Press the
ng
button. The
current DHW set-point will display. The temperature range is now
95 – 160
o
F (35 – 71.1
o
C).
Turn the dial counterclockwise to lower and clockwise to raise
the DHW set-point. After changing the temperature, press the
button to save the set-point.
Hotter water increases the risk of scald injury. Scalding may occur
within 5 seconds at a setting of 140
o
F (60
o
C). Water temperature
over 125
o
F can instantly cause severe burns, or death, from scalds.
Children, disabled, and elderly are at the highest risk of being
scalded. See instruction manual before setting temperature at
appliance. Feel water before bathing or showering!
D. Changing the Time
Press and hold the button for ve seconds when the display
panel is powered ON to change the time. The settings can be
adjusted as follows: Year / Month / Date / Hour / Minute / Day of
Week.
Figure 51 - Changing the Time Screen
Turn the dial counterclockwise to lower and clockwise to raise
the current time setting. After changing the setting, press the
button to save it. The next adjustable setting will appear. After the
time and date have been set, press the button to save and
return to the main screen.
NOTE: After a DHW demand has been met, the pump will run for
a set period of time to normalize heat exchanger temperature and
prevent scale build-up.
To turn on Lock Function, press the button at the P:Lc parameter
when scrolling through the Status Display screens. Turn the dial
counterclockwise to lower and clockwise to turn Lock Function
On or O. Press the button to return to normal operation.
NOTE: The control system will not allow changes if Lock Function
is activated. Lock Function will have to be turned o before making
further changes.
E. Lock Function