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 01-11-2009, 04:09 PM   #1
Member
 
Join Date: Jan 2009
Posts: 69
Rewards Points: 75
Default

Fixed Orifice


I'm having a problem with my heat pump, high electric bills. I have a HVAC tech coming to my home and wanted to be educated before his arrival. I have a Ruud 4 ton system. On the first visit this is what was determined. Air flow is good, here were the pressures that were recorded:

Low side= 40 PSIG, "Suction line temperature"=68 degrees.
High side= 235 PSIG, "Liquid line temperature"= 85 degrees
Temperature outside was 40 degrees.
Temperature inside was 70 degrees.

I have a "fixed orifice" on the outside unit and he thinks there is a restriction there. The liquid lines were also checked and do not have any kinks in them. What should the tech do when he comes to my house tomorrow?


Last edited by carlb7; 01-11-2009 at 04:36 PM.
carlb7 is offline   Reply With Quote
Old 01-13-2009, 03:58 PM   #2
Member
 
Join Date: Jan 2009
Posts: 69
Rewards Points: 75
Default

Fixed Orifice


Well the tech came out and opened up the system and the fixed orifice was free of any obstruction. When replacing the filter dryer low and behold we found our restriction! After that the pressures were:

Low side was 32 PSIG, Line temp was 52 degrees.
High Side was 210 PSIG Line temp was 85 degrees.
It was 45 degrees outside.

Do these sound normal? Yesterday the heat pump was on for 6 to 7 minutes and then off. Today with temperatures about the same its taking 10 to 11 minutes. Why would this be happening??

carlb7 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
convert stove orifice nyrak07 Appliances 1 04-07-2008 01:22 PM
sharing vent orifice amakarevic HVAC 3 02-28-2008 02:11 PM
Leaking fixed skylight mt232 Building & Construction 5 11-23-2007 10:12 PM
TXV or fixed cjett HVAC 1 09-29-2007 03:38 PM




Top of Page | View New Posts

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