Viewable And Changeable Control Parameters - Lochinvar 151 - 801 Service Manual

1
Service

Viewable and changeable control parameters

Before changing parameters, note the
CAUTION
settings so that the unit can be returned to
its original operating parameters.
General
Time and Date
The control uses an internal clock for the night setback
feature and for logging of events. For these features to work
correctly, the clock must be set when the water heater is first
installed or anytime the water heater has been powered off for
more than four (4) hours. This parameter must be accessed
to set the clock.
The internal clock does not adjust for
NOTICE
Daylight Savings Time and therefore, will
require a manual adjustment.
The clock is automatically updated whenever a PC is
connected and the Win_Pro-Installer program is started.
Software Version
The software version allows the user to view the software
version in use by the control. This software controls the
operation of the water heater. When a new software version
becomes available, the existing control can be replaced with a
new control to update the software.
Software version is read only.
Temperature units (°C / °F)
The control can be configured to display temperature in
either °C or °F. This parameter can be changed by the user
or the installer by accessing the Temperature Units parameter.
The default is °F.
Domestic Hot Water (DHW) Night Setback Offset
Once the unit's internal clock has been set correctly, the Night
Setback feature can be used to program a lower set point
during unoccupied times. The DHW can be programmed
for night setback. When in night setback, the control reduces
the set point by a fixed amount. For DHW, it subtracts the
DHW night setback offset from the tank set point (Tank Set
point parameter).
NOTE: The DHW night setback will not work without a tank
sensor installed.
The installer may adjust the DHW night setback offset by
accessing the DHW Night Setback Offset parameter. The
minimum setting is 0°F (0°C) and the maximum setting is
90°F (50°C).
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Outdoor Armor Water Heater Service Manual
Domestic Hot Water (DHW) Night Setback On
Times
This is the time in which the Night Setback Offset becomes
active. There are 7 start times and 7 stop times each for the
DHW night setback feature. The DHW Night Setback On
Times may be set to any time within a 7-day week. These
settings are referred to as triggers. Multiple start or stop
triggers may be set within a single day, if desired. When a
start trigger and a stop trigger are set to the same time, the
stop trigger has priority. The installer may adjust the DHW
start triggers in the DHW Night Setback On Times parameter.
This screen shows the start trigger number, the day of the
week, and the time of day.
Please note that the brackets ([]) denote
NOTICE
screen status.
1. When the screen is first accessed, start trigger number 1
is shown. If a different trigger number is desired, the
installer can rotate the NAVIGATION dial until the
desired trigger number is displayed. Once the desired
trigger number is selected, the installer can press the
NAVIGATION dial and the day of the week will start to
flash.
2. The installer can adjust the day of the week to the one he
wishes to set. Once the day is set, the installer can press
the NAVIGATION dial and the hour will begin to flash.
3. After setting the hour, the installer can press the
NAVIGATION dial and the minutes will flash. Once all
settings have been made, the installer can press the
RIGHT SELECT [SAVE] key. The installer can now
select a different trigger and adjust the settings for that
trigger.
4. Once all adjustments are made, the installer can press
the RIGHT SELECT [SAVE] key to save all of the new
settings and return to the General menu, or press the
LEFT SELECT [EXIT] key to return to the General
menu without saving the changes.
Domestic Hot Water (DHW) Night Setback Off
Times
The stop triggers for the DHW night setback feature can
be adjusted by accessing DHW Night Setback Off Times
parameter.
Night Setback Override
Any Night Setback On trigger currently active or scheduled
within the next seven (7) days can be skipped. To skip a
trigger, rotate the NAVIGATION dial until the arrow (>) is
next to the trigger you wish to skip. Press the NAVIGATION
dial once. "SK" will appear next to that trigger to indicate
that it will be skipped. You can restore an upcoming trigger
by selecting that trigger, and pressing the NAVIGATION
dial again. The "SK" next to that trigger will disappear.