User Guide

1 Service
14
Viewable and changeable control parameters
CAUTION
Before changing parameters, note the
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 clock is automatically updated whenever a PC is
connected and the WinPro-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. 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).
Domestic Hot Water (DHW) Night Setback On
Times
This is the time at 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. Note that the DHW recirculation
pump will stop when night setback starts and start when
night setback stops. 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.
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. The stop triggers are programmed the same way
as the start triggers.
The internal clock does not adjust for
Daylight Savings Time and therefore, will
require a manual adjustment.
Please note that the brackets ([]) denote
screen status.
NOTICE
NOTICE
Service Manual