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46
G. Resetting the Maintenance Schedule
When the system control flashes MAINTENANCE REQUIRED, it is
advisable that you call for service. After the service is performed,
reset the schedule for the next required service by using the
following steps.
Press ENTER on the display for 3 seconds. The Menu code will
appear as 000. This does not change. Press ENTER again. SERVICE
SCHEDULE RESET will be displayed. Using the > key scroll to the
selection of year or hours. Press ENTER to reset the selected Service
Schedule. To change a setting, press ENTER. Press the ^ and v keys
to make adjustments. Press ENTER when reset is complete.
Part 11 - Start-Up Procedures for the Installer
CENTRAL HEATING CURVE
Factory Default
212
203
201˚
194
185
FUNCTION 9
176
167
158
149
131
122
113
104
95
FUNCTION 11
86
77
68
59
50
41
32
-59
-41
-24
-9
OUTSIDE TEMPERATURE (F)
CENTRAL HEATING CURVE
Plot your Curve
212
203
194
185
176
167
158
149
131
122
113
104
95
86
77
68
59
50
41
32
-59
-41
-24
-9
OUTSIDE TEMPERATURE (F)
Table 22 - Heating Curve - NOTE: The user can adjust the heat curve
down by lowering the central heating temperature.
whl-445 Rev. 000 Rel. 014 Date 7.21.20
DEFAULT RESET CURVE
0
9
27
45
63
81
99
5˚
68˚
0
9
27
45
63
81
99
A. Boiler Control Status Menu
The boiler control also has the ability to review system status. To access
the status screens, press >. Once the first value is displayed, press ^ and
v to scroll through additional information. At any point press RESET to
exit the status screens.
Screen
o
SUPPLY SEN
180
F
o
RETURN SEN
150
F
Press v once.
o
CH SET
180
F
o
SUPPLY SEN
122
F
Press v once.
CH DEMAND
OFF
BOILER
Press v once.
0-10 SIGNL ON
*
Press v once.
o
CAS SET
190
F
o
SYSTEM
112
F
Press v once.
o
DHW SET
119
F
o
DHW
117
F
Press v once.
o
OUTDOOR
11
F
o
FLUE
95
F
Press v once.
Description
This is the first screen that appears
after pressing >, and shows the actual
temperatures measured by the supply
and return sensors. NOTE: If the boiler
is configured to use a 0 – 10 volt input,
the return sensor is disabled and the
second line of the display will be blank.
The screen displays the current central
heating temperature set point on the
top line. NOTE: This temperature set
point may vary from what was set
in the boiler settings if an outdoor
sensor is used. The actual temperature
measured by the supply sensor is
displayed on the bottom line.
This screen displays the central heat
demand set for the cascade system.
Shows if 0-10 volt is enabled.
This screen appears only when the
boiler is set as a Master Boiler.
This screen displays the cascade set
o
point (maximum 190
F) on the top
line. The system sensor reading is
on the second line. The control will
cascade the boilers up to this set point
depending on demand.
Displays the current tank temperature
set point on the top line. The actual
temperature measured by the tank or
return sensor (Westinghouse 7250P-
325) is displayed on the bottom line.
If a mechanical aquastat is used in
place of the recommended sensor, the
second line will display 'OFF' in place
of the temperature if the aquastat
measures close to its set temperature,
or 'ON' if the aquastat temperature is
too low.
The current outdoor temperature
is displayed on the top line. If there
is no outdoor sensor connected
to the boiler, this line will display
"OFF" in place of the temperature. If
the outdoor sensor is shorted, this
line will display "ON" in place of the
temperature. The second line displays
the current boiler flue temperature.
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