Hollyfeld wrote:That is what my system looks like. When you say get them balanced, are you talking about getting heat from both of those loops or actually getting a better Delta T from them?
I have never done a heat loss calculation on my house. I have an existing 114k BTU oil boiler that I never had an issue with keeping the house at any temperature. When my K6 was installed the balancing valves were moved from their original position for reasons I do not recall or know. No other changes to the system were ever made. I'm under the impression that a greater delta T than what i am getting would result in more heat being transferred into my living space.
I do have strap on thermometers and the temperature readings on them seem to be accurate to at least balance a system.
Outdoor temps - vary, but when its down in the single digits, my house does not stay at temperature (68*)
Supply temp - usually between 165 and 180.
There was a cold snap a few weeks back into the single digits. My thermostat was set at 68*. Boiler temp around 175 and stoking. House temp was down to 63*.
Information I need to get:
Actually, the greater the delta t on a loop, the less the heat transfer. Heat transfers from the water to the air. High to low. The hotter the water or hotter the average temperature, the greater the heat transfer. The greater the delta t, the lower the average water temperature and the lower the overall average heat transfer. Typical design for finned tube is 20 deg delta T. If design hot water temp is 180, then 160 would be the return and finned tube sized on 170 deg. average water temperature. If you have a smaller delta t than 20, it just means that the flow is greater than what a 20 deg delta t heat loss from the radiation would dictate.
If your house is not up to temp, the problem doesn't lie in the flow. The radiation need to be check to make sure air flows through it ok.. IE, nothing blocking it such as curtains, damper closed, dust on fins, too many doggy toys stuffed under it, couches too tight to wall, etc.
Maybe the fin length is too short for the heat loss. Up your water temperature in the colder weather if you have to.