larsonist
New Member
Two Questions for a full house Uponor Repipe DIY:
1) With Uponor copper manifold system with valves are there any concerns with the orientation of the manifold so the output/fixture lines go down instead of upward? I’d like to setup an access panel in my utility room for the manifold but I’m trying to prevent it from using up the entire wall as that wall backs a bedroom so I don’t want to lose that wall’s usage for TV mount and picture nail holes for fear of puncturing the line. So instead, if I aim them down I should be able to get everything in within about 3 studs and only use the bottom half of the wall. Any issues with going down instead of up? (Attached screenshot is what I’d like to do but flipping it upside down).
2) When I run my friction loss calculations and fuw (as best I understand them), I’m falling into the 3/4” branch line category but really close to 1”. Since the copper input on the manifold will be 1”, I’m wondering if there is any harm with running 1” PEX from the house entry to the manifold (don’t know the correct terminology for this - “branch line”?). I haven’t confirmed the main water supply pipe size (meter to house) but my meter size is listed by the city as 5/8th, while the back flow preventor’s model number is Febco LF850 1”.
Backstory: I just purchased a house and am planning to repipe all the original galvanized pipe. I’ve purchased the M12 ProPex Expansion tool and will be going with Uponor Pex-A piping and Uponor expansion fittings all the way through with a homerun manifold system. It’s a one story 1400 sqft house. Running lines in the crawl space, but manifold planned to be near water heater in utility room. The distance from the meter to the house is 35’ and an additional 30’ to the water heater (and where the manifold will be located). Longest fixture run from manifold will be about 30’. The pressure at the house entry is 60 psi. My fixture unit count (combined hot/cold) is 29.5 with 13 cold lines, 9 hot. I’m located in WA and my city code is UPC 2015.
I appreciate any help I can get!
1) With Uponor copper manifold system with valves are there any concerns with the orientation of the manifold so the output/fixture lines go down instead of upward? I’d like to setup an access panel in my utility room for the manifold but I’m trying to prevent it from using up the entire wall as that wall backs a bedroom so I don’t want to lose that wall’s usage for TV mount and picture nail holes for fear of puncturing the line. So instead, if I aim them down I should be able to get everything in within about 3 studs and only use the bottom half of the wall. Any issues with going down instead of up? (Attached screenshot is what I’d like to do but flipping it upside down).
2) When I run my friction loss calculations and fuw (as best I understand them), I’m falling into the 3/4” branch line category but really close to 1”. Since the copper input on the manifold will be 1”, I’m wondering if there is any harm with running 1” PEX from the house entry to the manifold (don’t know the correct terminology for this - “branch line”?). I haven’t confirmed the main water supply pipe size (meter to house) but my meter size is listed by the city as 5/8th, while the back flow preventor’s model number is Febco LF850 1”.
Backstory: I just purchased a house and am planning to repipe all the original galvanized pipe. I’ve purchased the M12 ProPex Expansion tool and will be going with Uponor Pex-A piping and Uponor expansion fittings all the way through with a homerun manifold system. It’s a one story 1400 sqft house. Running lines in the crawl space, but manifold planned to be near water heater in utility room. The distance from the meter to the house is 35’ and an additional 30’ to the water heater (and where the manifold will be located). Longest fixture run from manifold will be about 30’. The pressure at the house entry is 60 psi. My fixture unit count (combined hot/cold) is 29.5 with 13 cold lines, 9 hot. I’m located in WA and my city code is UPC 2015.
I appreciate any help I can get!
