On 5/28/2011 8:17 PM, DerbyDad03 wrote:

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?

I believe the trap prevents blowing the slightly higher pressure
discharge air out the condensate drain pipe.


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?

The nitrogen definitely should have been removed so there is only
refrigerant in the system. The whole system is pumped down - evaporator
coil, lines, outside unit.