Got called out to look at some refrigerant lineset failures happening at wastewater building on split 410A DX, under 5Ton. Leaks at joints. Liquid and suction lines are field fabricated from copper and have turned black. Still tying to find submittal to see what they used to braze. Not a corrosion guy, but suspect hydrogen sulfide attacked.
Spec called for closed cell insulation with pvc jacket for both lines.
Here are my questions
- for those who have used copper lines in this type of environment, any suggestion on coating or other to protect from happening again.
- Anybody used an alternate material for lineset. Maybe 304L stainless? What about material for joints?
Thanks for your help