This was from today’s inspect gas fired furnace 80 % efficient located in the attic with primary, secondary condensate drains installed with safety pan.
Who can explain why the drains are wrong and no you do not have to be a CMI to answer.
The pan drain is going upward…who done that???
On second glance, what appears the be the coil’s secondary drain in going into the drain pan. Where does it go from there???
Ya just gota wonder sometimes what people are thinking, well when there not.
This was a licensed contractor that installed this. Licensed but not qualified???
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The secondary drain and the safety pan were Tee’d together and then travel to the exterior of the foundation near the A/C condenser. The secondary drain was draining water at the time of inspection.
Hard to tell from just pictures.
- Drain line drains into the pan,…
- The exterior drain pipe is higher then the pan.
Potential overflow - water takes the path of least resistance.
Come on guys this one is just glaring at you don’t let them CMI’s out do you:) 
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The overflow pan piping goes higher than the top of the pan. Neato.
No vent on the drain. The top vent appears to be capped.
In my area, they want these pipes insulated in an open attic.
You guys are wearing the wrong hat today I placed the answer to this question in my first post???
I can under stand insulating these lines up north but what if the furnace is not high efficiency and makes no water. Is it still required to be insulated if water is present only in the cooling season?
Is it insulated inside the metal???
I know it is right in front of me Charley and it is killing me…
Don’t die big guy we need you:p
What metal???
The secondary drain pan line does not go anywhere. The line out of the unit and the line out of the pan tie together, but don’t tie into a line out. Overflow waiting to happen.
Primary line appears to go uphill as someone said in the first pic.
[quote=kweiss]
The secondary drain pan line does not go anywhere. The line out of the unit and the line out of the pan tie together, but don’t tie into a line out. Overflow waiting to happen.quote]
The secondary drain and the safety pan were tied together but that was just a minor problem. Not the main problem that I am looking for. The secondary drain did exit the exterior wall at the bottom of the brick veneer by the A/C unit and was draining at the time of inspection.
Here is the write up straight from my report.
A. The condensate drain for the furnace A-coil located in the attic the way that it is presently installed indicates that the primary drain has a restriction as water is discharging out of the secondary drain near the condensing unit. Recommend this primary line be checked for blockage. B. The primary A-coil condensate drain line is improperly connected to an air gapped P-trap within the attic. The furnace is not a high efficiency furnace and does not make condensate in the heat mode thus the p-trap becomes dry in the winter months allowing sewer gas to escape into the attic with the possibility of sewer gas entering the air stream of the furnace thru the drain line. Recommend the P-trap be capped off and the primary drain be connected to the secondary drain line below the platform of the furnace. I would also recommend a 24 volt safety switch be installed on the condensate outlet of the safety pan which in turn shuts the A/C unit off in the event of water in the safety pan. This type of safety switch is intended to prevent water damage to a finished ceiling.
Ahhhhhh 80% = low efficency furnace, nice one Charlie.