Hello and thank you for all that you do!
I have just had a complete TRANE XL20i system installed in my home.
The system is as follows :
XL20i 4 ton 2 stage
XV 80 Furnace
Trane comfort coil
Trane Pro 8000 Thermostat
New ducts designed and installed
I can provide numbers later if you need them - it is difficult to read the handwriting from my invoice.
I live in North Texas and the average temperature is 95-98 with about a 35% RH.
1200 sq ft. - I keep thermostat at 78 during the day and 79 at night.
Heat Load was done and system sized for 105 degrees as it seems our summers are getting hotter each year.
System runs all day at low stage ( 2 ton ) only except when I call for a lower temp then it kicks up to full stage ( 4 ton )
These are my possible problems....
Delta T seems a bit low
the difference between return air and nearest register is only 10 degrees on low stage , and 14 degrees at high stage cooling.
Furthermore , the humidity is reading 20% higher coming out of the supply duct as opposed to the humidity at the return
Testing Tools -
I have a temperature / humidity gauge with a remote.
both the main unit and remote read exactly the same when right next to each other in the same air space
there is cold air leaking from the coil case where the unused condensate drains are located ... is this normal?
I have contacted installing company and have not heard anything as of yet.
What do you think?