it Depends -- probably not until the weather moderates
- so yes - eventually but not due to system performance= due to load decrease
Cryptic and oddly unsatisfying as an answer (because I keep clicking on those underlined passages, only to find out they aren't hyperlinks).
In my situation, it takes a while for the system to 'balance', IE come up to temp where the water is actually circulating without the low limit being breached. In warmer weather, this never happens. In this extreme cold, the boiler might run 1/2 the night.
Eventually, I'm circulating water above the 160ll. Then the demand is satsified, and the boiler shuts off. And I'm pushing ~75g of water around both zones.
IF my heat loss exceeded my boiler's ability to match it, my boiler would never shut off, however the water temp in the system should eventually hit the ll and stay there (unless the heat loss was massively higher than the btuh of the boiler).
Balancing the system, if I understand it correctly, makes the boiler run full out from the get go, or close enough to make the difference negligible. It does this by restricting flow, reducing the return temp of the water, keeping hotter water in the living areas and forcing the boiler to run more or less continuously.
I'm just not seeing how this helps anymore than the other method if the hl exceeds the btuh output.