Installation / Operation Instruction Manual

Table Of Contents
Page 90
CONFIGURATION
8.D.11.e Temperature Conversion
To navigate to the Temperature Conversion Conguration Screen, touch the Temperature Conversion Icon on the
Miscellaneous Features screen.
The Temperature Conversion Conguration Screen allows adjustment of the following parameter:
Conversion unit – This parameter can be set to Fahrenheit or Celsius.
8.D.11.f Anti-Frost
To navigate to the Anti-Frost Conguration Screen, touch the Miscellaneous Features Icon on the Conguration
Screen, then touch the Anti-Frost Icon on the Miscellaneous Features screen.
The Anti-Frost Conguration Screen allows adjustment of the following parameters:
Anti-Frost This parameter provides the ability to either disable anti-frost or upon an anti-frost condition, congure the
unit to only turn on the pump or to turn on the pump and re the burner.
Set Point – The unit will enter anti-frost mode when the unit’s inlet sensor reads the set point minus the hysteresis value.
It will leave anti-frost mode at the set point plus the hysteresis value.
Hysteresis – This parameter is a +/- o󰀨set of the Anti-Frost Set Point used to turn on/o󰀨 the Anti-Frost mode.
Pump Control – This parameter provides the ability to select which pump(s) are used in Anti-Frost Mode.
The Set Point parameter is the temperature at the boiler inlet sensor
to which the boiler/heater will apply the Hysteresis value to enable the
Anti-Frost mode.
For example, if the Set Point is 44°F, and the Hysteresis is 4, Anti-Frost
will initiate at 40°F (set point – hysteresis) and then will end at 48°F
(set point + hysteresis). If Pump Only or Pump and Burner mode is
selected, the Pump Control parameter allows conguration of which
pump(s) will run during an anti-frost condition. At least one pump
must be selected, but all three pumps (unit, DHW, or System) can be
selected. If Anti-Frost mode is active, a snow ake icon will appear
above the unit inlet temperature on the home screen. As shown in
Figure 43
Figure 43. Active Anti Frost Condition