I have a wood boiler with a 250 gallon propane storage tank that ties into my oil system. I'm currently burning wood so the oil burner motor is disconnected, but the circulators still run to pump heat to the house. The house is a cape (2 stories) with 4 zones - 1 for the boilermate (DHW), 1 for the 1st floor, 1 for the 2nd floor, and 1 for the bathrooms. The house has 3 bathrooms - 2 on the 1st floor and 1 on the 2nd floor, with the thermostat in one of the 1st floor bathrooms. I have circulators in a bank next to my oil burner that pull directly from the storage tank in the garage (40 feet away).
For some reason I keep losing heat in the bathroom loop. I have no problems with getting heat to the main floors, nor any issues making hot water. I burned wood from Labor Day until New Years when we went away. I changed back over to oil (turn 3 ball valves and energize oil burner motor) while we were gone, but since switching back to wood I have lost heat to the bathrooms 3 times.
When switching from wood to oil and back to wood I sometimes get a little air in one zone. I've bled all zones and haven't noticed any air coming out. Both times the bathrooms got cold I bled about 6-8 gallons from the bathroom zone and got my heat back. My wife just called and it is out again.
From what I can tell the circulator is working fine. System pressure runs 12-15 psi from cold (110F) to hot (210F) as I have 40+ gallons of expansion capacity.
Does anyone have any ideas why I keep losing heat in this one zone? Your thoughts and suggestions are appreciated.
Thanks in advance!
For some reason I keep losing heat in the bathroom loop. I have no problems with getting heat to the main floors, nor any issues making hot water. I burned wood from Labor Day until New Years when we went away. I changed back over to oil (turn 3 ball valves and energize oil burner motor) while we were gone, but since switching back to wood I have lost heat to the bathrooms 3 times.
When switching from wood to oil and back to wood I sometimes get a little air in one zone. I've bled all zones and haven't noticed any air coming out. Both times the bathrooms got cold I bled about 6-8 gallons from the bathroom zone and got my heat back. My wife just called and it is out again.
From what I can tell the circulator is working fine. System pressure runs 12-15 psi from cold (110F) to hot (210F) as I have 40+ gallons of expansion capacity.
Does anyone have any ideas why I keep losing heat in this one zone? Your thoughts and suggestions are appreciated.
Thanks in advance!