25
Pellet Boiler Outdoor Air Reset Operation
When the outdoor sensor is installed, at 20° F. or below OAT (Outdoor Air Temperature), the boiler will operate at the temperature set on the Maximum Temperature knob. The boiler water temperature will decrease by 1 degree for every 1 degree in temperature rise of the Outside Air.
Example 1 | OAT | Water Temp | Degree Change | ||
Max set at 185o | 65o | 140o |
| ||
Min set at 140o | 60o | 145o |
| ||
|
| 55o | 150o |
| |
|
| 50o | 155o |
| |
|
| 45o | 160o | ||
|
| 40o | 165o | ||
|
| 35o | 170o | ||
|
| 30o | 175o | ||
|
| 25o | 180o | ||
|
| 20o | 185o | 0o | |
|
| 15o | 185o | 0o | |
|
| 10o | 185o | 0o | |
|
| 5o | 185o | 0° |
|
|
| 0o | 185o |
|
|
| Example 2 | OAT | Water Temp | Degree Change | |
| Max set at 180o | 65o | 150o | * |
|
| Min set at 150o | 60o | 150o | * |
|
|
| 55o | 150o | * |
|
|
| 50o | 150o | ||
|
| 45o | 155o | ||
|
| 40o | 160o | ||
|
| 35o | 165o | ||
|
| 30o | 170o | ||
|
| 25o | 175o | ||
|
| 20o | 180o | 0o | |
|
| 15o | 180o | 0o | |
|
| 10o | 180o | 0o | |
|
| 5o | 180o | 0o | |
|
| 0o | 180o | 0o | |
*No change in boiler temperature after reaching minimum setpoint temperature.
