I have a Conquest 90 Max gas furnace with central air.
I also have a bunch of questions:
1 - The internal coils have not been clean since it was installed 5 years ago, so I decided to take a look and see if they needed cleaning. Problem is, I'm not sure how to access them.I removed the screws from the panel where the condensate and refrigerant pipes are, but as you can see from this picture, I can't remove the panel because of the vent pipe.
There is no other panel that I can remove. The other 3 sides that surround the coils are a single piece which has the duct work on top of it. The duct work would have to go up in order for the 3-sided surround to come off.
How do I get to the coils?
2 - Through the limited opening, I can see into the coil area with a flashlight. I see 2 tee-pee sets of coils and as far as I can tell they are perfectly clean, at least on the surfaces that I can see with the panel open as shown. Should I just close it up and forget about it or are there areas I should check - assuming I can gain better access?3 - When I removed the panel I saw 2 stickers, both of which raised questions in my mind:
3.1 - One sticker has a picture of a "condensate drain trap" made from a piece of flexible tubing attached to the drain output pipe. As you can see from the picture, I don't have a trap. At the bottom of the PVC pipe seen behind the gas line is the condensate pump.The pump sends the condensate up a flexible tube and across the ceiling to the utility sink.
I don't need a trap with that set up, do I?
3.2 - The other sticker says: "Coil is shipped with a low pressure (5-10 psi) charge of dry nitrogen. Evacuate system before charging with refrigerant."
Would the unit work (i.e. cool) if the system was not evacuated/ charged when it was installed?
I'm not saying that it wasn't evacuated/charged because I don't remember if the installer did it or not, so I'm just curious.
Thanks!