The Reset Heating mode provides a greater degree of heating efficiency and comfort compared with
Set Point heating, which relies on the temperature of the return water to fire or shut down.
Figure 6 Potential heat loss from house
Ensure that the outdoor sensor is appropriately located, typically on the north face of the building away
from any heat source. If there is no signal from the outdoor sensor, the controller assigns a default 32
°F/0 °C value for the outdoor design temperature, and adopts the appropriate temperature target from
the relevant reset curve.
IBC's controller offers two reset heating methods for controlling the supply/outlet water temperature:
1. "Standard" reset heating (default) that uses a two-point reset heating ratio.
2. Advanced reset heating that uses a characteristic reset curve ratio.
2.2.1 Standard reset heating (default)
Standard reset uses two points in the reset heating ratio to determine the outlet water temperature.
The illustration below shows the relationship of the two points: The supply/outlet water temperature
will rise linearly with a decrease in the outdoor temperature until the coldest expected temperature is
reached, called the "Design Outdoor" temperature setting. The supply/outlet water temperature
changes based on the straight line between the two points.
2.2.1 Standard reset heating (default)
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