House: Oil burner Baseboard hot water
---------------------------------------
Leaving for Florida and our house is located in the northeast where the temperatures are now below freezing.
We would like to leave the electric on since this house is due to be sold within the next 4 to 6 weeks and the buyers will want a walk-through with the electric on, the water on and the oil burner on.
We will drop the thermosat to 50 to 55 degrees for the next 4 to 6 weeks to conserve oil since nobody will be there.
We were thinking of draining the water from the pipes so that they do not freeze - but what would happen if the oil burner calls for water to heat the house?
Is there any way to keep the house at 50 to 55 degrees and at the same time drain the water so that do not freeze in the event of a power outage?
Thanking you in advance. Eddy