Ruud liquid line size - http://www.hvacmechanic.com/ Forums

Original message

steve772705

70.179.108.187

"Ruud liquid line size" , posted Tue 8 Jan 08:22

Ruud 2 ton, 14seer, heat pump: specs say to use a 1/4 inch copper tube liquid line. Why is there a 3/8inch outlet on the condenser, a 3/8 inch inlet on the evaperator, and 3/8 inch connectors on the dryer. I'm inclined to use a 3/8 inch line and avoid all these unnecessary adaptors. However, our sales guy says that Ruud specifies a 1/4 inch line and that it is probably necessary for the 14 seer rating. I dont see how that can be true. What do you guys think? Can I just use a 3/8 inch line?

Replies:

steve772705

66.173.72.210

"Re(1):Ruud liquid line size" , posted Wed 9 Jan 20:09

Thanx for the info. I will use 3/8. The line set is 32' and runs from the outside condenser up to the attic over a 2 story home.

Hvacraider

68.0.133.166

"Re(1):Ruud liquid line size" , posted Wed 9 Jan 11:48

The only time tubing size is a relevant factor is on linesets greater than fifteen feet in length. The 3/8 is fine if you are under that.... You can go up to 40 ft with no problems in either mode though...

smythers1968

66.232.220.95

"Re(1):Ruud liquid line size" , posted Tue 8 Jan 20:10

Use 3/8

Life lesson #12 Know when not to do it yourself.
WOW That Can Hurt!!

bama 101

68.113.125.75

"Re(2):Ruud liquid line size" , posted Tue 8 Jan 21:14

my opinion is to use the 1/4inch like the manufacturer suggest when you are talking about a heat pump.

the only time you will have any problems is in the heat mode.....

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