![](/images/new-backgrounds/1287404/28740461x1.webp)
Relay Output #4 Programming ( Used for Boiler #3 )
The third boiler stage is enabled to operate if the water temperature is below 160°F and will remain on until it rises to 175°F. The third stage can only operate if the second boiler stage relay #3 has been active for at least 5 minutes. Once activated, this stage must remain on for 5 minutes and once
25