At around 3:00am this morning I happened to be wide awake. While laying in bed contemplating my day ahead, I heard my oil burner turn on. It ran for about 45 sec to a minute before shutting off. Thinking to myself that the fire was out in the OWB I got dressed and before going outside to have a look at the OWB, I decided to check the water temp coming into the house from the OWB; it was at 190 degrees, that's where it should be. The water temp in the oil burner was ~180 degrees. The triple aquastat settings on the oil burner are; HI=150; LO=140. Knowing that, that begs the question; Why did the oil burner turn on for the 45 sec to 1 minute? It'll turn on around every hour, hour and half for about 45 sec to a minute. I'm confused. I'm counting on you experts for assistance. Roger
PS; The oil burner was serviced by a professional this past summer.