Roth tank with overhead line.

rolandoLI

Soooo ... should I leave the temperature for the High limit
And low
Limit alone??
Yesterday was really cold here in Long Island and I notice that my boiler was turning on and off very frequently, the temp would go downt to 170 and turning on until it reach high limit 185. It kept the house comfortable at 68 but it seems to be overworking.

STEVEusaPA

Thought that was already answered.
If you're bouncing off the high limit on the colder (coldest) days, your boiler is simply way too big.

HVACNUT

You've got the Hydrostat 3250 Plus?
Set it for cold start, limit 170° (because it wasn't that cold on Long Island yesterday), 20° diff. Circulator Hold off, Economy settings, etc.

Is it wired for the indirect to override the Economy settings?

Circulators on the return too. Tsk tsk.

Check the Hydrostat manual for options.

BTW, you're ON Long Island, not IN. Everybody knows that. 😁

pecmsg

Yesterday wasn't that cold.

Wait for single digits and the winds blowing. If the boiler cycles its oversized!

ON the East End

EdTheHeaterMan

In the unlikely event of a fire, the plastic in the tiger loop would melt, literally adding FUEL to the fire. So put it outside where the firefighters can more easily extinguish the blaze. To get USA approval, and UL listing, a firomatic valve did the job.

Does the Lead handle on that valve melt before plastic?
I'm sure someone has done that test! I'd like to know the answer

EBEBRATT-Ed

@EdTheHeaterMan I think firomatics are 165 deg.