Recommended oil furnace temperature settings?
We have an oil furnace controlled by a Honeywell box with two temperature dials on it. One appears to the max and the other the minimum temperature for water in the coil of the boiler. Is there are recommended setting for either of these for maximum efficiency it this heater is for forced hot water heat only? As we use an indirect water heater for service hot water that regulates temperature on its own. Thanks for any input!
Adjusting boiler temperature for summer
This same question has occured to me, as we have a similar oil boiler with probably the exact Honeywell temperature control unit bolted to it. My heating guy suggested that we set it 170-190 degrees in winter and set the thrid dial to a spread of 15 degrees (not sure exactly why, since the spread seems to be 20 degrees, but this 3rd dial possibly controls something else).
On very cold days (below 15 degrees or so), I boost these numbers to 180-200, since our house doesn't have quite as much running baseboad as it should.
BUT, here's my question: since we have an indirect SuperStor hot water tank, which runs as a zone off the boiler, what's a good temperature to set the boiler during the warm months? I've lowered it to 140-160, which still provides us with ample hot water... but I'm not sure whther this is the most efficient temperature setting.
Should I consider lowering the numbers even more (130-150?), or would that be inherently wasteful of oil somehow?
Any advice/insight is appreciated!
amazer in southern NH