Bath sink with AC drain line clogged - pictures

[Reach4]

Would you recommend to invest in something like RIDGID 35473 or Milwaukee M18 FUEL 18-Volt Lithium-Ion Cordless when on sale?

RIDGID 57043 for $41 not up to your needs? Feeds and retracts when you use it with your reversible drill.

While not the best way, I used a RIDGID PowerSpin Plus Model# 57043 through a lavatory drain and through a 1-1/4 trap. I was expecting to disassemble the trap, but I tried through the trap just in case it worked. It may not work that way for you. I felt lucky. It saved catching the trap water, and made it easy to run water while operating. My drain was a bit unusual in that the strainer basket just lifted out.

 

[Boris]

RIDGID 57043 for $41 not up to your needs? Feeds and retracts when you use it with your reversible drill.

While not the best way, I used a RIDGID PowerSpin Plus Model# 57043 through a lavatory drain and through a 1-1/4 trap. I was expecting to disassemble the trap, but I tried through the trap just in case it worked. It may not work that way for you. I felt lucky. It saved catching the trap water, and made it easy to run water while operating. My drain was a bit unusual in that the strainer basket just lifted out.

Good point. I will check this model. Thank you!

 

[Sponsor]

 

[Boris]

On another topic What is recommended?
Should I close all PVC pipe openings with caps or leave at least one in open? Or it does not matter? Pics attached.

 

[Bannerman]

The lines leading to the sink drains should be uncapped, but caps should be installed on the openings leading directly from the evaporator coils within the air handlers

I anticipate conditioned air will be blowing from the uncapped openings into the attic space while the air handler blower is operating, which may also be carrying some of the condensed water up the vent tube into the attic space.

Removing the caps from the lines leading to the sink drains will provide a vent so the water flowing to the sink drains can not create a vacuum in the line. A vacuum in the drain line could prevent water from flowing freely to drain, and would also cause air to enter through the sink drain so as to relieve the vacuum created.

 

[wwhitney]

Are the following number correct?

A typical furnace blower can create around 0.8" w.c. pressure differential across the fan. The return ducting is often shorter/larger than the supply ducting, but it has a filter on it, so the pressure on the supply side may be about 0.5" w.c. above ambient, and the pressure on the return side about 0.3" w.c. below ambient. So with the caps rearranged, when the blower is running, the water in the shallow PVC condensate drain trap will be about 0.5" lower on the blower side than the drain side, but it looks like the trap is deep enough to accommodate that without losing trap seal.

Or maybe I'm off by 0.1" or 0.2" w.c. here and there?

Cheers, Wayne

 

[Bannerman]

but it looks like the trap is deep enough to accommodate that without losing trap seal

The manufacturer of the AC equipment will typically specify the appropriate minimum trap depth to anticipate the pressure differential between the pressurized supply where the evaporator drain pan will be located, to the ambient conditions where the condensate is to be drained. The open vent after the trap is to ensure the pressure after the trap remains at atmospheric pressure as well as to prevent an airlock condition within the drain line.