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Outdoor Reset Parameters Screen:
When the outdoor air sensor is installed, the control will
calculate the water temperature set point based on the
outdoor air temperature. As the outdoor air temperature
drops the water temperature set point increases. This feature
allows the boiler to be more efficient in periods of mild
weather.
The Outdoor Reset Screen allows access to eight (8)
parameters. Those parameters are as follows:
• Reset Temperature at Low Outdoor Temperature - When
the outdoor air temperature drops to its minimum
setting, the water temperature will be at this point, if the
user set point parameter is set higher. This parameter can
only be changed by the installer. The temperature range
of this parameter is 0° to 190°F. The default value is
180°F.
• Reset Temperature at High Outdoor Temperature -
When the outdoor air temperature rises to or above its
maximum setting, the water temperature will be at this
point. This parameter can only be changed by the
installer. The temperature range of this parameter is 32°
to 180°F. The default value is 100°F.
• Outdoor Temperature at High Reset Temperature -
When the outdoor air temperature drops to this point,
the water temperature will be at its maximum setting.
However, if the user set point is set lower, the water
temperature will be limited by the user set point. This
parameter can only be changed by the installer. The
temperature rane of this parameter is -22° to 70°F. The
default value is 25°F.
• Outdoor Temperature at Low Reset Temperature - When
the outdoor air temperature rises to or above this point, the
water temperature will be at its minimum setting. This
parameter can only be changed by the installer. The
temperature range of this parameter is 25° to 86°F. The
default value is 70°F.
• Outdoor Shutdown Set Point - When the outdoor air
temperature rises above this point, the control will block
all system heat calls. The Hot Water Generation call will
be unaffected. This parameter can be changed by the
user or the installer. The temperature range of this
parameter is 32° to 122°F. The default value is 70°F.
• Outdoor Shutdown Differential - The number of degrees
below the outdoor shutdown set point that the outdoor air
temperature must go before the boiler will respond to a
system heat call. This parameter can be changed by the user
or the installer. The temperature range of this parameter is
0° to 90°F. The default value is 10°F.
• Boost Time - If the boost increment parameter is set to
active, the boost time parameter will set the amount of time
that must elapse with a system heat call before the water
temperature set point will be increased. This parameter can
be changed by the user or the installer. The time range for
this parameter is 0 minutes to 250 minutes. The default
value is 20 minutes.
Service Manual