gpm

Paul S_3

hey everyone....i have a question i just did a heat loss in a home today calculation came to 49,995btuh.....i did a calc for pipe size and circulator....gpm=btuh divided by (td mutiply 500)....came up with 5gpm.....so i would have to use 1'' pipe and baseboard.....home is small is there something not right here???can i use 3/4'' here would it be that much of a problem??

Paul48

FloPro University

In the variable speed pumping section.....there's a section on pipe sizing.If you've never checked the site out before....you'll be up late tonight.

Dave H_2

The pipe size

Is also going to be dependent upon the head loss, then size your circ on that. 3/4" will give you a much higher head loss than 1", but if that fits in the realm of the circ, rock on.

Otherwise, 1" may be the answer



Dave H

Zman

Split it.

You can run 2-3/4" lines. It is often practical to run a 1" line to the center of the house then split to  2-3/4" lines.

The other problem with piping 50K btu all in series, is that the radiators at the end will be starved and under perform.

Carl

Paul S_3

zman

I'm fine with the element I'm running two 3/4" zones....will not go over 67ft of element for 3/4"

Paul48

Circ

Are you going to use a delta-t circ?

Harvey Ramer

Put every room's

Baseboard on either a Trv or a Zone Valve. Run 3/4" supply and return piped in reverse return. It will be a little more linear feet of pipe, but still less costly and more comfortable than running 1" with inline baseboard.



Only 2% of a heating season will all zones be calling for heat at the same time. Engineer for comfort rather than max demand.



Harvey