whl-648 Rev. 001 Rel. 003 Date 10.8.19
47
C. Changing the DHW Set-Point
Figure 43 - DHW Set-Point Screens
Press the
button when the display panel is powered ON to
change the DHW Set-Point. The display will appear as follows.
The DHW icon and current set-point temperature will flash when the
DHW Set-Point can be changed.
Factory DHW Set-Point is 125
o
F (51
o
C). Initial DHW Set-Point range
is 95 – 120
o
F (35 – 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 the
button when the display panel is powered ON. The current DHW set-
point will display and the DHW icon will flash. Then press and hold
the
button for five seconds. The scald warning letter “H” (high
temperature) will display. High temperature DHW Set-Point range is
121 – 140
o
F (49.5 – 60
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.
DANGER
!
Hotter water increases the risk of scald injury. Scalding may
occur within five (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 persons are at
the highest risk of being scalded. See instruction manual before
setting temperature at the boiler. Feel water before bathing or
showering!
D. Changing the Temperature Indicator
To change the temperature indicator from Fahrenheit to Celsius,
press and hold the
button for more than five (5) seconds when
the display panel is powered ON. This will toggle the temperature
unit indicated on the display.
E. Changing the CH Set-Point
Press the
button when the display panel is powered ON. The
display will appear as follows. The set-point will flash when the CH
set-point can be changed.
Figure 44 - CH Set-Point Screens
Factory CH Set-Point is 180
o
F (82
o
C). Initial CH Set-Point range is 86 –
180
o
F (30 – 82
o
C).
Turn the dial
counterclockwise to lower and clockwise to raise the
CH set-point. After changing the temperature, press the
button to
save the set-point.
NOTE:
The CH Set-Point cannot be changed by pressing the
button if an outdoor sensor or 0-10V is connected to the boiler. When
using an outdoor sensor, the boiler will automatically change the
target temperature based on the outdoor reset curve. When using
0-10V, the boiler will automatically change the target temperature
based on input voltage.
NOTE:
If input voltage is less than 1.5V the 0-10V will be ignored.
F. Storage Mode
Storage Mode indicates that the boiler is heating stored water in the
internal storage tank. When Storage Mode is operating the display
appears as follows.
Figure 45 - Storage Mode Screens
To turn on Lock Function, press the
button at the d:Lc parameter
when scrolling through the Status Display screens. Turn the dial
counterclockwise to lower and clockwise to turn Lock Function On or
Off. 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 off before making
further changes.
G. Lock Function
Summary of Contents for WBRC 140 Series
Page 21: ...whl 648 Rev 001 Rel 003 Date 10 8 19 21 E Applications Figure 10 Piping Symbol Legend ...
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Page 41: ...whl 648 Rev 001 Rel 003 Date 10 8 19 41 Figure 34 Ladder Diagram ...
Page 81: ...whl 648 Rev 001 Rel 003 Date 10 8 19 81 Notes ...
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