Hi All,
I'm not sure our HVAC subcontractor (chosen by our contractor) is installing the proper diameter line set and I was hoping someone would know what the correct diameter is. We are adding an all new system (2nd zone) in the attic and I lost confidence in the contractor when I heard the price (and his justification for it) for replacing the older condenser and coil in the basement system.
Anyway, the condenser is a TCA230AK - Tempstar 2200 2.5 ton 12 SEER (13 SEER with matching coil) and the run up to the attic is about 70 feet with a 20 foot rise and 5 90 degree bends. (Have I learned enough searching through old posts in this group in the last 24 hours to at least ask the question properly?) I believe the two lines he's using are 3/4" and 3/8" but, I could certainly be off by 1/8". I've seen references to 1 1/8" lines for longer runs on some equipment and this definitely isn't that large.
Is he using the right size? Are there any other important installation issues I should be aware of?
Thanks in advance for any help.
-Incabloc