Forums | Home Repair | Home Improvement | Painting | Interior Decorating | Remodeling | Landscaping


Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > HVAC

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Search this Thread Display Modes
Old 04-14-2011, 07:50 AM   #1
Member
 
Join Date: Apr 2011
Posts: 54
Share |
Default

Split System Line Set Sizing


I am installing two split systems. One is 1.5T the other is 2T. Each is using an ADP Series R air handler and a Ducane condenser. The Air handlers are located in the attic, and the condensers outside. The elevation difference between the air handlers and the condensers is 11'. The 1.5T will be approximately 60' no greater than 75'. The 2T system will be approximately 50' no greater than 60'.

So if I understand correctly I have < 75' linear feet, and 11' liquid lift.

I intend on running 3/4" Suction lines and 3/8" Liquid Lines. Do these seem appropriately sized?

yogi_bear_79 is offline   Reply With Quote
Old 04-14-2011, 09:51 AM   #2
30 year tech
 
hvac122's Avatar
 
Join Date: Dec 2007
Location: Lincoln, Nebraska
Posts: 427
Default

Split System Line Set Sizing


You need to follow the manufactures charts for that specific match.

hvac122 is offline   Reply With Quote
Old 04-14-2011, 10:29 AM   #3
Member
 
Join Date: Apr 2011
Posts: 54
Default

Split System Line Set Sizing


I have read the charts, but not being an expert I was hoping for some guidence that I was reading them correctly.

From what I can tell My Liguid Line can be 5/16" on both units (Lineset1.jpg)

(LineSet2.JPG) has the chart for the vapor line, here it looks like 5/8" is acceptable.

Unfortunately my salesmen is not helpful on this matter. I am fine upsizing to 3/8 & 3/4 if that is required. I am using HFC-410A refrigerant.
Attached Thumbnails
Split System Line Set Sizing-lineset1.jpg   Split System Line Set Sizing-lineset2.jpg  
yogi_bear_79 is offline   Reply With Quote
Old 04-14-2011, 05:31 PM   #4
An old Tradesmen
 
Join Date: Oct 2008
Location: PA
Posts: 23,529
Default

Split System Line Set Sizing


3/8 x 3/4.
beenthere is offline   Reply With Quote
The Following User Says Thank You to beenthere For This Useful Post:
yogi_bear_79 (04-18-2011)
Old 04-14-2011, 05:59 PM   #5
Hvac Pro
 
Join Date: Nov 2008
Location: Winnipeg, Canada
Posts: 8,347
Default

Split System Line Set Sizing


Not sure if you plan to use a TX Valve, thermostatic expansion valve but if the systems are for yourself I would. Gives you far better control of evaporator coil temp etc. May help if there are any issues once you get to the 50 foot length of line. Not all coils easily accept them so you need to find out ahead of time if yours does. You should also install a secondary drain pan to protect the ceiling from damage and I would recommend a water bug detector to set off an audible alarm if water gets in there or one of these. These can be wired in to shut off the condensor.
http://www.diversitech.com/prod/wet_switch.php
__________________
"Cut it twice and it is still too short".
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Last edited by yuri; 04-14-2011 at 06:05 PM.
yuri is offline   Reply With Quote
The Following User Says Thank You to yuri For This Useful Post:
yogi_bear_79 (04-18-2011)
Old 04-18-2011, 08:18 AM   #6
Member
 
Join Date: Apr 2011
Posts: 54
Default

Split System Line Set Sizing


We have installed the drain pans, with alarms. Went with the 3/8 3/4 lines, and have plans for the TX valves.

yogi_bear_79 is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Need help sizing duct trunk addition to system. chryste HVAC 6 10-03-2010 01:59 AM
installing a split system Jacques HVAC 6 07-10-2008 08:50 AM
New House, new system, poor cooling Faulknertw HVAC 15 07-08-2008 10:06 PM
Is 1/2 Pex more restrictive than 1/2 copper? twilightcall Plumbing 19 06-24-2008 07:32 AM
boiler / Over-pressurizing cparke HVAC 1 05-21-2008 05:54 AM




Top of Page | View New Posts

Copyright © 2003-2014 Escalate Media. All Rights Reserved.