Profound-Tingle-Reoccur
New Member
Currently, my HVAC condensate line is connected directly through a hole drilled into the top of a plumbing cleanout in my utility room. I hadn't had any issues with this setup until recently when I had a small amount of water backup. I think this connection was the source of the water and that it coincided with the city turning off the water for 1/2 a day.
What would be the proper way to connect my HVAC condensate line into this cleanout in order to avoid backups? Would it be as simple as adding in a backflow preventer (like a Moen M8086) then wye to the drain line? Or should the condensate line be trapped before the connection? I also see that I don't have the proper slope to the drain and will likely add in a condensate pump.
Thanks for the help!
The code in my area states that "a drain line from a HVAC system or equipment shall be indirectly connected to a drainage system".
I also found the manual for my furnace and although it didn't have diagrams of the proper drainage setup, there were a few general bullets:
What would be the proper way to connect my HVAC condensate line into this cleanout in order to avoid backups? Would it be as simple as adding in a backflow preventer (like a Moen M8086) then wye to the drain line? Or should the condensate line be trapped before the connection? I also see that I don't have the proper slope to the drain and will likely add in a condensate pump.
Thanks for the help!
The code in my area states that "a drain line from a HVAC system or equipment shall be indirectly connected to a drainage system".
I also found the manual for my furnace and although it didn't have diagrams of the proper drainage setup, there were a few general bullets:
- The drain trap supplied with the furnace must be used.
- The drain line between furnace and drain location must be constructed of 3/4” PVC.
- The drain line between furnace and drain location must maintain a 1/4 inch per foot downward slope toward the drain.
- Do not trap the drain line in any other location than at the drain trap supplied with the furnace.
- Do not route the drain line outside where it may freeze.
- If the drain line is routed through an area which may see temperatures near or below freezing, precautions must be taken to prevent condensate from freezing within the drain line.
- If an air conditioning coil is installed with the furnace, a common drain may be used. An open tee must be installed in the drain line, near the cooling coil, to relieve positive air pressure from the coil’s plenum. This is necessary to prohibit any interference with the function of the furnace’s drain trap.