Indirect Hot Water Heating Performance

Don Shanklin

I have a ranch that is approximately 2700 sq feet. I have a indirect hot water heating system. Last yeat I had a new boiler put in during an addition to our home. Half of my home (main living area) has a basement and the bedroom end of the house is over a crawl space. The issue I am having is that the bedroom end of the house (over crawl space) is approximately 3 to 4 degrees colder than the rest of the house. Additionally, the addition I had installed in slab on grade and we put in a seperate heating zone off new boiler to heat slab floor, which is awesome!

I know for sure a that a couple items exist:

OVer the years, 3 radiators have been removed in the system and the tees for the radiators were just capped. A cooper loop was not installed between them on two instances because it was not physically possible and the contractor that did my HVAC did not bring this issue up nor did he remove the tees from the main line. I have come to find out (through accessing this website, that this might be effecting the overall flow through my main line. Could this be causing the temperature differentail problem?

About 4 years ago, I insulated in the crawl space under the floor. At that time, I notice that the main hot water heating supply line has three finned or radiator sections in the crawl space (I suspect to heat crawl space to prevent water pipes going to bathroom from freezing). Due to the fact that the crawl space is pretty warm, should I remove the insulation from below the floor allow this heat to reach flow surface above crawl space?

Any information that would allow me to try and get bedroom end of house heat up would be greatly appreciated!

Big Ed

Balance

The capped tees should be corrected.The problem will arise during the cold periods of winter..

The cold bedrooms seem to be a balance problem maybe due to a larger heat loss.The fins on the main were there to help . I would perfer to zone that section........ .I assume the thermostat is in the living area. You can cut down on the radiation near the thermostat to heat the bedrooms more.If you have tube and fin convectors ,cover part of element with tin foil to adjust convection.