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Heating Curve - Dial Set Point:
Before adjusting the dial settings, read through the
sequence of operation to ensure that you understand
how this control operates.
The Heating Curve setting deter-
mines the number of degrees the
supply water temperature is raised
for each one degree drop in outdoor
temperature. The Heating Curve dial
position can be calculated from the
following formula.
Heating Curve - Dial Set Point Example:
System Design Temperature = 120°F
Outdoor Design Temperature = 10°F
Warm Weather Shutdown (WWSD) = 70°F
Dial Set Point = 120 – 70°F = 0.8
70 – 10°F (Table 2)
Figure 10
- Heating
Curve Dial
