Hi pros,
First plumbing DIY here. My old radon/well manifold failed (pump short-cycling 5 secs, 35 to 0 PSI). I built a custom overhead CSV manifold to maintain the original wall footprints.
Key Design Choices (See Pics):
- Weight & Dampening: Used 1" brass pipe to support the heavy CSV, reducing to 3/4". Kept PEX on the vertical drop to act as a vibration dampener.
- The Tank Compromise: Kept the existing 2.1-gal tank (instead of the recommended 5-gal). I didn't want the extra weight ripping the original copper anchors out of the wall.
- Bonus Result: The dead-steady 50 PSI from the CSV, combined with a newly replaced mixing valve, completely cured my 1997 Peerless boiler's DHW temp swings.
(Note: Wiring is messy and PRV has no drop pipe yet because I'm just pressure-testing. Will fix to code once the layout is approved.)
My Questions for the Experts:
- Hydraulics: Does this brass/PEX mix and the 2.1-gal tank compromise look okay for long-term reliability? Any blind spots?
- Electrical Code: The pressure switch is mounted high. What's the proper way to route the wire down? (Liquid-tight? Greenfield?)
- PRV Discharge: Can I use standard PVC for the cold-water PRV drop pipe to the floor?
Thanks for any feedback!
First plumbing DIY here. My old radon/well manifold failed (pump short-cycling 5 secs, 35 to 0 PSI). I built a custom overhead CSV manifold to maintain the original wall footprints.
Key Design Choices (See Pics):
- Weight & Dampening: Used 1" brass pipe to support the heavy CSV, reducing to 3/4". Kept PEX on the vertical drop to act as a vibration dampener.
- The Tank Compromise: Kept the existing 2.1-gal tank (instead of the recommended 5-gal). I didn't want the extra weight ripping the original copper anchors out of the wall.
- Bonus Result: The dead-steady 50 PSI from the CSV, combined with a newly replaced mixing valve, completely cured my 1997 Peerless boiler's DHW temp swings.
(Note: Wiring is messy and PRV has no drop pipe yet because I'm just pressure-testing. Will fix to code once the layout is approved.)
My Questions for the Experts:
- Hydraulics: Does this brass/PEX mix and the 2.1-gal tank compromise look okay for long-term reliability? Any blind spots?
- Electrical Code: The pressure switch is mounted high. What's the proper way to route the wire down? (Liquid-tight? Greenfield?)
- PRV Discharge: Can I use standard PVC for the cold-water PRV drop pipe to the floor?
Thanks for any feedback!
