Laars MagnaTherm HTD Series Installation And Operation Instructions Manual

Also see for MagnaTherm HTD Series: Installation and operation instructions

Contents

Laars MagnaTherm HTD Series Installation And Operation Instructions Manual Manual pdf 91 page image

Page 87HTDC O N F I G U R AT I O N8.D.11.e Temperature ConversionTo navigate to the Temperature Conversion Configuration Screen, touch the Temperature Conversion Icon on theMiscellaneous Features screen.The Temperature Conversion Configuration Screen allows adjustment of the following parameter:• Conversion unit – This parameter can be set to Fahrenheit or Celsius.8.D.11.f Anti-FrostTo navigate to the Anti-Frost Configuration Screen, touch the Miscellaneous Features Icon on the ConfigurationScreen, then touch the Anti-Frost Icon on the Miscellaneous Features screen.The Anti-Frost Configuration 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, configure theunit to only turn on the pump or to turn on the pump and fire 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 +/- offset of the Anti-Frost Set Point used to turn on/off 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 sensorto which the boiler/heater will apply the Hysteresis value to enable theAnti-Frost mode.For example, if the Set Point is 44°F, and the Hysteresis is 4, Anti-Frostwill 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 isselected, the Pump Control parameter allows configuration of whichpump(s) will run during an anti-frost condition. At least one pumpmust be selected, but all three pumps (unit, DHW, or System) can beselected. If Anti-Frost mode is active, a snow flake icon will appearabove the unit inlet temperature on the home screen. As shown inFigure 44 Figure 44. Active Anti Frost Condition