Welcome! Here are the website rules, as well as some tips for using this forum.
Hydronic - pipe sizes mixed?
Just had a new gas furnace installed last year. Very old house, Maine weather... needless to say cold. I believe the term for the baseboard installed is "home run" or "single Loop". All on one zone currently is the cellar, 1st floor, and second floor. The thermostat is located about the center of the first floor area building foot print is 24' x 38' bungalow style. Currently standard 22 year old 3'4" piped hydronic base board heating units throughout. I have far to many questions as I move though this DIY upgrade of the home so I'll just go one at a time for now.
My living room / dining room is an open layout measuring 12' x 24' with tin ceiling and all. I wanted to keep a look of old and new for that combined area. The Pensotti Panel radiator seems to fit the "look" we want. Problem... or is it? I noted that the feed and return on the units is 1/2" piped. I've already planned to zone cellar, 1st, and 2nd floor independent but.. if I install a 1/2" Penscotti system do all of let's call it zone 2 (1st fl) have to be reworked to 1/2" feed/return also?