User’s Information Manual
12
4
SMART SYSTEM control module
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.
To save any changes and return to the Home Screen, press the
RIGHT SELECT [HOME] key. To return to the Status Screen
without saving the changes, press the LEFT SELECT [EXIT]
key.
Temperature Units
The control can be configured to display temperature in
either °F or °C. This parameter can be changed by the user
or the installer by accessing the
Temperature Units parameter
.
The default is °F. To change the temperature units, access
the clock menu as described in the
User
section (page 11).
Rotate the NAVIGATION dial until the arrow (>) is pointing
to “TEMPERATURE UNIT °F”. Press the NAVIGATION
dial once. The temperature unit will begin to flash. Rotate
the NAVIGATION dial until the desired temperature unit
is shown. Save the new setting as described in the
Saving
Parameters
section (page 11).
Space heating (SH1, SH2, SH3) and tank set points
This boiler is equipped with outdoor air reset, a feature that
saves energy by reducing the boiler water temperature as the
heating load decreases. Three (3) individual outdoor resets
for low outdoor temperatures are available. The reset curve
parameters can be changed by the installer by accessing the
Outdoor Reset
menu.
There are three (3) individual user set points for better zone
control. These are listed as
SH1 Set Point
through
SH3 Set
Point
. These set points provide a maximum boiler water
temperature limit to the outdoor reset curve. If an outdoor
sensor is not installed, the boiler will operate at a fixed SH
set point. Boiler models WH 55 - 285 will display “Outdoor
Sensor Fault” until a sensor is connected. If multiple set
points are calling for heat the highest set point has priority.
The range is
SH Minimum Set point
to
SH Maximum Set point
.
The default is 125°F (52°C).
By installing a tank sensor, the SMART SYSTEM control can
perform the tank thermostat function. The SMART SYSTEM
control automatically detects the presence of this sensor, and
generates a DHW call for heat when the tank temperature
drops below the tank set point differential (
Tank Set point
Differential parameter)
, and finishes the call for heat when
the tank temperature reaches tank set point + offset. This
parameter can be changed by the installer by accessing the
DHW Tank Set point parameter
. The temperature range of
this parameter is 60°F (16°C) to tank maximum set point. The
default value is 125°F (52°C).
Press the NAVIGATION dial once. A menu will appear
showing the SH1, SH2, SH3, and DHW Set Points. Rotate
the NAVIGATION dial until the arrow (>) is pointing to
the setting you wish to change. Press the NAVIGATION dial
again. The value of the selected setting will begin to flash.
Rotate the NAVIGATION dial to adjust the value. Save the
new setting as described in the
Saving Parameters
section
(page 11).
CAUTION
Mixing valves are required for the
protection of any low temperature loops.
