Can I use 1" black pipe for a 10' runout (couterflow) supplying 1 small radiator?
Need to run several short branches to individual rads on the 1FL. Runouts will have good pitch and span < 10' before a swing joint and short riser. Want to confirm I can use 1" diameter black pipe for these short runs. Rads are all < 25 EDR. Book says I'm good for up to 28 EDR.
Comments
-
Probably want to insulate it but it should be good. Might need more vent on the radiator. the smaller pipe will heat faster and have less air to vent.
1 -
Good pitch will be critical. Don't skimp.
Br. Jamie, osb
Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England
2 -
Your right on the border line. Should go to 1 1/4" to be sure but if you can get plenty of pitch your probably ok.
Keep the 90s to a minimum. 45s are better. Make sure the tees coming off the mains are on a 45 to the branch.
0 -
All of the horizontal runouts in my house are 1 1/4", even a tiny 16sqft radiator.
Single pipe 392sqft system with an EG-40 rated for 325sqft and it's silent and balanced at all times.
0 -
Yep, runouts will insulated. The plan is to vent each branch through a tee at the top of the riser.
0 -
Same here, but then you see all the crap work they did and you wonder if that was actually based on thought or convention. I'll use 1-1/4" if I need to, but if 1" will do the job, i see no reason to pay for and lift heavier pipe than is necessary. I'm still weighing this out.
0 -
Not sure.
Also a chance all they had in my case was 2x2x1.25" tees.
Single pipe 392sqft system with an EG-40 rated for 325sqft and it's silent and balanced at all times.
1 -
why take the chance and have to redo it.
1 1/4” minimum
0
Categories
- All Categories
- 87.9K THE MAIN WALL
- 3.3K A-C, Heat Pumps & Refrigeration
- 60 Biomass
- 430 Carbon Monoxide Awareness
- 134 Chimneys & Flues
- 2.2K Domestic Hot Water
- 6K Gas Heating
- 124 Geothermal
- 170 Indoor-Air Quality
- 3.9K Oil Heating
- 80 Pipe Deterioration
- 1.1K Plumbing
- 6.7K Radiant Heating
- 397 Solar
- 16.1K Strictly Steam
- 3.5K Thermostats and Controls
- 56 Water Quality
- 51 Industry Classes
- 52 Job Opportunities
- 18 Recall Announcements